· 42C,D,S,V Series Fan Coil Air Conditioners Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS ...................... 1 INTRODUCTION

42C,D,S,V SeriesFan Coil Air Conditioners

Installation, Start-Up and ServiceInstructions

CONTENTS

PageSAFETY CONSIDERATIONS ...................... 1

INTRODUCTION .................................. l

PHYSICAL DATA ............................... 2-4

PRE-INSTALLATION ........................... 4-43Unpack and Inspect Units ........................ 4Protect Units From Damage ...................... 4Prepare Jobsite for Unit Installation .............. 4Identify and Prepare Units ........................ 4

INSTALLATION ............................... 43-77Step 1 -- Place Units in Position ................ 43• 42C UNITS• 42V UNITS• 42D UNITS• 42S UNITSStep 2 -- Make Piping Connections ............. 52• VALVE PACKAGES• 42C,D,V DRA1N CONNECTIONS• 42C,D,V WATER SUPPLY/RETURN

CONNECTIONS• 42C,D,V STEAM CONNECTIONS• 42C,D,V DIRECT EXPANSION (DX) REFRIGERANT

PIPING• TEST AND INSULATEStep 3 -- Make Electrical Connections .......... 65• STANDARD WIRING PACKAGESStep 4 -- Make Duct Connections ............... 75Step 5 -- Frame and Finish Unit ................. 75Step 6 -- Cut out Openings for Grilles and

Thermostats .................................. 75Step 7 -- Make Final Preparations ............... 75

START-UP ..................................... 77,78

SERVICE ...................................... 78,79Excessive Condensation on Unit ................ 78To Clean Coil .................................... 78Coil Air Vent (Manual or Automatic) ............. 78Check Drain ..................................... 78Fan Motor Bearings ............................. 78Clean Fan Wheel ................................ 78Clean Electric Heater ............................ 78Clean or Replace Air Filters ..................... 78Electrical Wiring and Controls .................. 79Valves and Piping ............................... 79Warranty ........................................ 79

START-UP CHECKLIST FOR 42C,D,S,V SERIESFAN COIL AIR CONDITIONERS ........ CL-1, CL-2

SAFETY CONSIDERATIONS

Installation of this unit can be hazardous due to electrical com-

ponents and equipment location (such as a ceiling or elevated

structure). Only trained, qualified installers and servicemechanics should install and service this equipment.

When installing this unit, observe precautions in the literature,labels attached to the equipment, and any other safety precau-tions that apply.• Follow all safety codes.• Wear safety glasses and work gloves. Never wear bulky

or loose fitting clothing when working on any mechani-cal equipment. Gloves should be worn for proper protec-tion against heat and other possible injuries. Safetyglasses or goggles should always be worn when drilling,cutting, or working with chemicals such as refrigerantsor lubricants.

• Use care in handling and installing this unit.• Never pressurize any equipment beyond specified test

pressures. Always pressure test with an inert fluid or gassuch as clear water or dry nitrogen to avoid possibledamage or iniury in the event of a leak or componentfailure during testing. Always protect adjacent flalmna-ble material when welding or soldering. Use a suitableheat-shield material to contain sparks or drops of solder.Have a fire extinguisher readily available.

ELECTRIC SHOCK HAZARD. To avoid the possibilityof electrical shock, open and tag all service switches beforeinstalling this equipment.

INTRODUCTION

Carrier fan coil units represent a prudent investment offer-ing trouble-free operation and long service with proper installa-tion, operation, and regular maintenance. Your equipment isinitially protected under the manufacturer's standard warranty;however, this warranty is provided under the condition that thesteps outlined in this manual for initial inspection, proper in-stallation, regular periodic maintenance, and everyday opera-tion of the equipment be followed in detail. This manual shouldbe fully reviewed in advance before initial installation, start-up,and any maintenance. Should any questions arise, please con-tact your local sales representative or the factory BEFOREproceeding.

This document contains general installation instructions forthe 42C,D,S,V unit fan coils. Refer to the unit wiring diagraminstalled on the blower housing or specific manufacturer litera-ture for any other type of factory-mounted controls.

See drawings for unit configurations, dhnensions, clearances,and pipe connections. Refer to unit wiring label for all electricalconnections; follow NEC (National Electrical Code) and localcodes.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53420007-01 Printed in U.S.A. Form 42-4SI Pg 1 2-12 Replaces: 42-3SI

PHYSICAL DATA

Component weight data, shipping weights, and filter data ofthe 42C,D,S,V units are provided in Tables 1-4.

Table 1 -- Physical Data -- 42C Series Units

UNIT SIZE 42C

NOMINAL AIRFLOW (cfm)

SHIPPING WEIGHT (Ib)*42CA42CE42CF42CG42CH42CK

COIL WATER WEIGHT(Approx Ib per row of coil)

42CA, CE, CG, CK42CF, CH

COILSFPI

Coil Face Area (sq ft)l-

MOTOR (qty)42C Series

BLOWER (qty)42CA, CE, CG, CK42CF

FILTERSNominal Size (in.) (1-in. thick)

42CA**

42CEM-42CFM-***42CHM-I-42CG

Bottom ReturnRear Return

42CKBottom ReturnRear ReturnRear Return with Duct Collar

Qty

SUPPLY DUCT COLLAR

02 03 04 06 08 10 12

200 300 400 600 800 1000 1200

36

55

98

115

39

60

118

120

497084

12662135

598297

16873

150

6495

11017682155

95 107135 154163215 245128227 241

0.7 i 0.8I 1.011.411.712.312.7-- -- 1.02 1.42 1.71 2.32 --

10 fins/inch

0.8 I 1.1 I 1.4 I 1.9 I 2.3 I 3.2 I 3.7

1 I t I t I t I 1 I 2 I 2

1 I t I 2 2 2 4 4- I I I I -10 x 2410 x 18

10 x 231_

8 x 231_

10 x 2810 x 22

10 x 288 x 28

10x287x21

6 x 183/41

10x 28

7x21

6 x 183/41

10 x 32

10x28

123/4 x 2810 x 32

10 x 321/2

8 x 321/2

10 x 337x27

6 x 243/41

10 x 42

10 x 33

123/4 x 3310 x 42

10x 378x37

10x457x38

6 x 353/41

1-in.

10 x 42

10 x 40

123/4 x 4010 x 42

10x418x41

10 x 45

7 x 38

6 x 35341

5/80D7/80D

5/80D

1-1-Filter size if located in return-air plenum.

PIPING CONNECTIONS (Sweat) (in.)Coil Outlet and InletDrain ConnectionTell-Tale Drain

*Calculate operating weight of unit: shipping weight + coil water weight xnumber of coil rows.

1-42CF and 42CH applies to sizes 04 to 10.**Filter size for return-air grille location.

10x54 10x6410x54 10x62

123/4 x 5410x 54

10 x 541/2 10x638 x 541/2 8 x 63

10x62 10x627x52 7x52

6 x 493/4 6 x 493/41 1

***With electric heater and bottom return, the 42CF unit filter width increasesfrom 123/4 to 163/4 .

ttt Recommended filter size for remote air grille location.

UNIT SIZE 42V


SHIPPING WEIGHT (Ib)*42VA42VB42VC42VE42VF42VG


42VA, VB, VC'I-, VF42VE42VG

COILSFPI

Coil Face Area (sq ft)

MOTOR (qty)42VA, VB, VF42VC, VE42VG

BLOWER (qty)42VA, VB, VF42VC, VE42VG

FILTERS

Nominal Size (in.) (1-in. thick)42VA, VB, VF42VC, VE42VG

Qty

SUPPLY DUCT COLLAR

PIPING CONNECTIONS (Sweat) (in.)Coil Outlet and InletDrain Connection

Table 2 -- Physical Data -- 42V Series Units

01 02 I 03 04 06 I 08

150 200 I 300 400 600 I 800

m

m

m

m

m

40

6589507292

8O9560

1009874

9011672

108122

112134110154141

115137

144

I 101000

140169

178

UNIT SIZE 42D


SHIPPING WEIGHT (Ib)*42DA42DC42DD42DE42DF


COILSFPI

Coil Face Area (sq ft)

MOTOR (qty)

BLOWER (qty)

FILTERSNominal Size (in.) (1-in. thick)

42DA42DC42DD

(Front Return)(Bottom Return)

42DE42DF

Qty

SUPPLY DUCT COLLAR

PIPING CONNECTIONS(Sweat - 4-Row)

Inlet (in. OD)Outlet (in. OD)

12

1200

170192

205

0.710.810 1.411.712.327-- 0.9 1.2 1.6 2.3 -- -- --0.4 -- 1.0 .....

12 fins/inch

0.8 I 0.8 I 1.1 I 1.4 I 1.9 I 2.3 I 3.2 I 3.7

111 1-- 1 1 1 2 -- -- --1 -- 2 .....

111 i i 4 4-- 2 2 2 4 -- -- --1 -- 2 .....

---- 73/4 X 213/4 173/4 X263/47X 213/4 7 X 263/473/4 X313/47X 343/473/4X413/4173/4X433/4173/4X573/47X 483/4 -- -- 73/4 X653/4--10 X 141/2 -- 10 X 28 .....

1 1 1 1 1 1 1 1

1-in.

5/80D3/4 MPT

*Calculate operating weight of unit: shipping weight + coil water weight x 1-Available in sizes 02-06.number of coil rows.

Table 3 -- Physical Data -- 42D Series Units

06 08 10 12 I 14 I 16 18 20

600 800 1000 1200 I 1400 I 1600 1800 2000

64 79 93 110 119 129 137 15594 107 150 169 174 178 195 220

150 163 176 195 220 235 240 247135 155 165 184 199 215 232 243157 167 177 199 215 229 249 258

1.3 1.6 1.9 2.3 2.7 3.0 3.4 3.7

10 fins/inch

1.6 2.1 2.5 3.0 I 3.5 I 4.1 4.6 5.0

1 1 1 2 I 2 I 2 2 21 1 1 2 2 2 2 2

14x21 I 14x 26 I 14x30 I 14x 35

123& x 35123& x 3414 x 283&

14 x 28

NA14 x40

123/4 x 40123/4 x 3914 x 333/4

14 x 34

14X45 I 14XS0 I 14X54

123/4 x 45123/4 x 4414 x 383/4

14 x 38

123/4 x 26123/4 x 2514 x 193/4

14 x20

123& x 21

123& x 21

14 x143&14 x 14

123/4 X 30123/4 X 2914 X 233/4

14 X24

123& X 50123& X 4914 X 433&

14 X 44

1-in.

5/8 I 7/8 I 11/85/8 7/8 11/8

*Calculate Operating Weight of unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.

123/4 x 54123/4 x 5314 x 473/4

14 x48

Table 4 -- Physical Data- 42S Series Units

o...s.zE42so3 o4I o6I o8 ,o ,2I ,4 ,6 2oNOMINAL AIRFLOW (cfm) 300 400 600 800 1000 1200 1400 1600 2000SHIPPING WEIGHT (Ib)*42SGA,SGM,SU 180 225 240 260 280 305 -- -- --42SH 202 247 262 286 311 336 -- -- --42SJ 360 450 480 520 560 610 -- -- --42SGS 162 203 216 234 252 275 -- -- --42SM ...... 390 390 390

COIL WATERWEIGHT(Approx Ib per row of coil) 1.79 2.63 3.45 4.09 4.09 4.39COILSFPI 14 fins/inch

BLOWER (qty)42SGA,SH,SU,SGM,SGS,SM 1 1 1 1 1 1 1 1 1

FILTERS

,om,na,Size,,n.,,-in.t,,c,, I I I IQty 11-

PIPING CONNECTIONSInlet (in. OD) 1/2, unless larger size valve package is selected

*Calculate Operating Weight of Unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.t42SJ units require two filters.

PRE-INSTALLATION

Unpack and Inspect Units--All units are carefullyinspected at the factory throughout the manufacturing processunder a strict detailed quality assurance progrmn, and, wherepossible, ALL maior components and sub-assemblies are care-fully tested for proper operation and verified for full compli-ance with factory standards. Operational testing of some cus-tomer furnished components such as electronic control valvesand digital controllers may be a possible exception.

Each unit is carefully packaged for shipment to avoid dmn-age during normal transit and handling. Equipment should al-ways be stored in a dry place, and in the proper orientation asmarked on the carton. All shipments are made F.O.B. factoryand are the responsibility of the receiving party to inspect theequipment upon arrival. Any obvious damage to the cartonand/or its contents should be recorded on the bill of lading anda claim should be filed with the transportation company, andCarrier should be advised. After determining the condition ofthe carton exterior, carefully remove each unit from the cartonand inspect for hidden dmnage. At this trine, check to makesure that "furnished only" items such as thermostats, grilles etc.are accounted for whether packaged separately or shipped at alater date. Any hidden damage should be recorded and imme-diately reported to the transportation company, a claim shouldbe filed with the transportation company, and Carrier should benotified. In the event a claim for shipping damage is filed, theunit, shipping carton, and all packing must be retained forphysical inspection by the transportation company. All equip-ment should be stored in the factory shipping carton with inter-nal packing in place until installation.

At the time of receipt, the equipment type and arrangementshould be verified against the order documents. Should anydiscrepancy be found, the local sales representative should benotified finrnediately so that proper action may be taken.Should any questions arise concerning warranty repairs, thefactory must be notified BEFORE any corrective action is tak-en. Where local repairs or alterations can be accomplished, thefactory must be fully informed of the extent and expected costof those repairs before work is begun. Where factory opera-tions are required, the factory must be contacted for authoriza-tion to return equipment and a Return Authorization Numberwill be issued. Unauthorized return shipments of equipmentand shipments not marked with an authorization number willbe refused. In addition, any claims for unauthorized expenseswill not be accepted by the manufacturer.

Protect Units from Damage -- The equipment mustalways be properly supported. Temporary supports used duringinstallation or service must be adequate to hold the equipmentsecurely. Equipment should always be stored in the proper ori-entation as marked on the carton. To maintain warranty, protectunits against hostile enviromnent (such as rain, snow, or ex-treme temperatures), theft, vandalism, and debris on jobsite.Equipment covered in this manual is not suitable for outdoorinstallations. Do not allow foreign material to fall into drainpan. Prevent dust and debris from being deposited on motorand fan wheels. Failure to do so may have serious adverse ef-fects on unit operation, and in the case of the motor and blowerassembly, may result in innnediate or premature failure. Manu-facturer's warranty is void if foreign material is allowed to bedeposited on the motor or blower wheels of any unit. Someunits and/or job conditions may require some form of tempo-rary covering during construction.

Prepare Jobsite for Unit Installation -- To savetime and to reduce the possibility of costly errors, set up a com-plete sample installation in a typical room at jobsite. Check allcritical dimensions such as pipe, wire, and duct connectionrequirements. Refer to job drawings and product dimensiondrawings as required (see Fig. 1-39). Instruct all trades in theirpart of the installation.

Identify and Prepare Units -- Be sure power require-ments match available power source. Refer to unit nameplateand wiring diagram.

1. Check all tags on unit to determine if shipping screws areto be removed. Remove screws as directed.

2. Rotate the fan wheel by hand to ensure that the fan isunrestricted and can rotate freely. Check for shippingdamage and fan obstructions.

2

]1 ........... "_t E-_-_-;

r--

_4/2_8"

%1/8(2Q1

2-t/4

r .... ]L .... d

-+i..............................................I

JA

TOPVlEW

FRONTVIEW

# ,.

i I -

4._

_5

17-1/2

C213) 4

RIGHTSIDEVIEW

"9

LEGEND

"1 -- Junction Box (remote mount)2 -- Flexible Metal Conduit3 -- Drain Conn, 7/8-in. OD4 -- Tell-Tale Drain Conn, 5/8-in. OD (optional)5 -- Drip Lip (optional)6 -- Hanger Slots (4), Rubber Grommet

has 3/8-in. Diameter Hole7 -- Supply Duct Collar, 1-in.8 -- Air Vent, 1/8-in. MPT9 -- Return Conn, 5/8-in. OD10-- Supply Conn, 5/8-in. OD

NOTES:1. Right hand unit shown; left hand unit opposite. Coil connection

locations are _+5/8-inch.2. Unit sizes 02 and 03 have one motor, one blower; sizes 04

through 08 have one motor, 2 blowers; sizes 10 and 12 have2 motors, 4 blowers.

3. Standard 3-row coil shown.4. Overall unit dimension increases by 4 in. with optional electric

heat.5. Not shown: 3-speed fan switch; wall plate, closed cell foam on

main drain pan.6. Units have galvanized finish.7. For optional coil connections, view 42CA-203-1 using the Fan Coil

Builder.8. Dimensions shown in inches (mm).

UNITSIZE

02

03O406

081012

NOM DIMENSIONS (in.)AIRFLOW

(Cfm) A A' B D' E F G H

200 211/4 311/4 16 13 181/4 61/4 83/4 193/4300 251/4 361/4 20 14 221/4 61/4 83/4 233/4400 311/4 431/4 26 15 281/4 61/4 83/4 293/4600 361/4 431/4 31 10 331/4 71/2 10 343/4800 431/4 571/4 38 17 401/4 71/2 10 413/4

1000 571/4 651/4 52 11 541/4 71/2 10 553/4

1200 651/4 751/4 60 13 621/4 71/2 10 633/4

QTY/UNIT

Blower Motor

1122244

1111122

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

Fig. 1 -- 420A Furred-In Horizontal Unit Dimensions

FACE UNITAREA WEIGHT*(sq ft) (Ib)

0.83 361.08 391.35 491.88 592.31 643.16 953.65 107

,1 5.,-r---i r ....

'---_ L....J 3

4

)

TOP VMEW

5

1

8

STD 7 "-'_'\,_, \L2_

3

suNt

1

2%1/2

_2-3J_

_ (3t4) _9

r

/ I

1 Ii i

....... 1 _

-lO

RIGHTsl DE VIEW

LEGEND

1 -- Junction Box (remote mount)2 -- Flexible Metal Conduit3 -- Strip Heater High Limit4 -- Electric Strip Heater Element5 -- Tell-Tale Drain Conn, 5/8-in. OD (optional)6 -- Drain Conn, 7/8-in. OD7 -- Drip Lip (optional)8 -- Supply Duct Collar, 1-in.9 -- Air Vent, 1/8-in. MPT10-- Return Conn, 5/8-in. OD11 -- Supply Conn, 5/8-in. OD12-- Hanger Slots (4), Rubber Grommet

has 3/8-in. Diameter Hole




3. Standard 3-row coil shown.4. Overall unit dimension increases by 4 in. with optional electric

heat.5. Not shown: 3-speed fan switch; wall plate, closed cell foam on

main drain pan.6. Units have galvanized finish.7. For optional coil connections, view 42CA-203-1 using the Fan Coil


UNITSIZE

02030406081012


(Cfm) A A' B D' E F G H

200 211_ 311_ 16 13 181_ 61_ 83_ 193_

300 251_ 361_ 20 14 221_ 61_ 83_ 233_

400 311_ 431_ 26 15 281_ 61_ 83_ 293_

600 3614 4314 31 10 3314 71_ 10 3434

800 4314 5714 38 17 4014 71_ 10 4134

1000 5714 6514 52 11 5414 71_ 10 5534

1200 6514 7514 60 13 6214 71_ 10 6334

QTY/UNIT

Blower Motor

1122244

1111122



0.83 381.08 411.35 511.88 612.31 663.16 973.65 109

Fig. 2 -- 420A Furred-In Horizontal Unit with Electric Heat Dimensions

2 _ |NSU_TEB

I \ 71-c3o

I Iq ,_i P, ',t V_)ImNL_ 12"t I._ _1 I | /

lit .....,i iHJI r__-, ............ _ ............. q,_ &I li :------ ........-----z: 4

-rI' Z,,oNI

2-1Y4__ I . 36_ " I- b -(76)

TOPVIEW

PLENUM

5

6 , /-7j,

i '__' J _ _ _ _ 8

- oJ ((

I:_TER _AL

OPTIONALRFARRETURN

II_ Fi_I 5

FRONTVIEW

3/4

14/" 13

"N. 10

"-"'--7

"_) T

_- 12

/ ,' ; 1!

..... ____ r__t •

' IP_-": .......

_F_N1"(2_1FILT_ AiR _L_R

_MOV#,L

RIGHT SIDE _EW

LEGEND

"1-- Junction Box, 4 in. x 4 in.2- Flexible Metal Conduit3-- Mounting Bracket4-- Drain Conn, 7/8-in. OD5 -- Tell-Tale Drain Conn, S/g-in. OD (optional)6 -- Drip Lip (optional, shipped loose)7- Filter8- Return Duct Collar, 1-in.9 -- Filter Access Panel

"10-- Access Panel"1"1-- Supply Duct Collar, 1-in."12-- Air Vent, 1/8-in. MPT"13-- Return Conn, 5/8-in. OD"14-- Supply Conn, s/8-in. OD"15-- Hanger Slots (4), Rubber Grommet has

3/8-in. Diameter Hole

NOTES:1, Right hand unit with standard 3-row coil shown; left hand unit opposite, Coil

connection locations are _+5/8-inch,2, Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have

one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers,3, Standard 3-row coil shown,4, Unit available with bottom or rear return air,5, Overall dimension increases by 4 in, with optional electric heat,6, Not shown: 3-speed fan switch; wall plate, 1/2-in, fiberglass insulation on

inside of plenum, closed cell foam on main drain pan,7, Units have galvanized finish,8, For optional coil connections, view 42CA-203-1 using the Fan Coil Builder,9, Dimensions shown in inches (mm),

UNITSIZE

02030406081012

NOM DIMENSIONS (in.) QTY/UNIT FACE

AIRFLOW (sq ft)(Cfm) A A' B C D' E F G H Blower Motor AREA

200 211/4 311/4 16 181/4 13 193/4 61/4 83/4 153/8 1 1 0,83300 251/4 361/4 20 221/4 14 233/4 61/4 83/4 193/8 1 1 1,08400 311/4 431/4 26 281/4 15 293/4 61/4 83/4 253/8 2 1 1,35600 361/4 431/4 31 331/4 10 343/4 71/2 10 303/8 2 1 1,88800 431/4 571/4 38 401/4 17 413/4 71/2 10 373/8 2 1 2,31

1000 571/4 651/4 52 541/4 11 553/4 71/2 10 513/8 4 2 3,161200 651/4 751/4 60 621/4 13 633/4 71/2 10 593/8 4 2 3,65


Fig. 3 -- 420E Furred-In Horizontal Unit with Plenum Dimensions

UNIT RETURN AIRWEIGHT* DUCT

(Ib) (inches)

55 101/2 x 181/4

60 101/2 X 221/4

70 101/2 X 281/4

82 101/2 X 331/4

95 101/2 X 401/4

135 101/2 X 541/4

154 101/2 X 621/4

19-tf4(4B91

TOPVlBH

FRO_ VIEW

!, ill

: - 8

/-9

li_ Am

_{'-') t _ III /-10

12"-/ ;_'_- 11

OPTIONALR_R RETURN

16

RIGHT SIDE VIEW

LEGEND

"1-- Junction Box, 4 in. x 4 in.2- Flexible Metal Conduit3-- Mounting Bracket4 -- Electric Strip Heater Element5 -- Drain Conn, 7/8-in. OD6 -- Strip Heater High Limit7- Tell-Tale Drain Conn, s/8-in. OD (optional)8-- Drip Lip (optional, shipped loose)9- Filter

10-- Return Duct Collar, 1-in.11 -- Filter Access Panel12-- Access Panel13 -- Supply Duct Collar, 1-in.14 -- Air Vent, 1/8-in. MPT15 -- Return Conn, s/8-in. OD16 -- Supply Conn, s/8-in. OD"17-- Hanger Slots (4), Rubber Grommet has


NOTES:1. Right hand unit with standard 3-row coil shown; left hand unit opposite. Coil

connection locations are _+8/8-inch.2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08 have

one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.3. Standard 3-row coil shown.4. Unit available with bottom or rear return air.5. Overall dimension increases by 4 in. with optional electric heat.6. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass insulation on

inside of plenum, closed cell foam on main drain pan.7. Units have galvanized finish.8. For optional coil connections, view 42CA-203-1 using the Fan Coil Builder.9. Dimensions shown in inches (mm).

UNITSIZE

02030406081012

NOM DIMENSIONS (in.) QTY/UNIT FACE UNIT RETURN AIRAIRFLOW AREA WEIGHT*

(Cfm) A A' B C D' E F G H Blower Motor (sq ft) (Ib) DUCT

200 211/4 311/4 16 181/4 13 193/4 61/4 83/4 153/8 1 1 0,83 57 101/2 x 181/4

300 251/4 361/4 20 221/4 14 233/4 61/4 83/4 193/8 1 1 1,08 62 101/2 x 221/4

400 311/4 431/4 26 281/4 15 293/4 61/4 83/4 253/8 2 1 1,35 72 101/2 x 281/4

600 361/4 431/4 31 331/4 10 343/4 71/2 10 303/8 2 1 1,88 84 101/2 x 331/4

800 431/4 571/4 38 401/4 17 413/4 71/2 10 373/8 2 1 2,31 97 101/2 x 401/4

1000 571/4 651/4 52 541/4 11 553/4 71/2 10 513/8 4 2 3,16 137 101/2 x 541/4

1200 651/4 751/4 60 621/4 13 633/4 71/2 10 593/8 4 2 3,65 156 101/2 x 621/4


Fig. 4 -- 420E Furred-In Horizontal Unit with Plenum and Electric Heat Dimensions

LEGEND

"1-- Junction Box, Installed with Plenum2- Flexible Metal Conduit3-- Insulated Plenum4-- Mounting Bracket5 -- Drain Conn, 7/8-in. OD6- Tell-Tale Drain Conn, 5/8-in. OD (optional)7 -- Drip Lip (optional, shipped loose)8-- Filter9 -- Return Duct Collar, 1-in.

"10-- Access Panel11 -- Supply Duct Collar, 1-in.12 -- Supply Conn, 5/8-in. OD13 Air Vent, 1/8-in. MPT14 -- Return Conn, 5/8-in. OD15 -- Hanger Slots (4), Rubber Grommet has


6

-7ii

_D _

_A'_

£8

Ill Am

/ ,,"==|

10 _ _F_ £RFILT[R CUP_OVAL

OPTIO_L R_R RETURN

7ia 11

1i "X,_ 12/ X

14 / 8 _

214/2 _I--- -I

I

i '_N[_N FILT_RR_OVAL

RIGHTSIDEVIEW


locations are _+5/8-inch.2. Unit sizes 04 thru 08 have one motor, 2 blowers; size 10 has

2 motors, 4 blowers.3. Refer to above figure for configuration of filter and track if

installed in optional plenum.4. Overall dimension increases by 4 in. with optional electric heat.5. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass

insulation on inside of plenum (when installed), closed cellinsulation on main drain pan.

6. Units have galvanized finish.7. For optional coil connections, view 42CA-203-1 using the Fan

Coil Builder.8. Dimensions shown in inches (mm).

UNITSIZE

04060810

NOMAIRFLOW

(Cfm) A A' B

400 311& 431_ 26600 361_ 431_ 34800 431_ 571_ 38

1000 571_ 651_ 52

DIMENSIONS (in.)

C D' E

QTY/UNIT

Blower Motor

281/4 15 293/4 61/4 83/4 301/4331/4 10 343/4 71/2 10 351/4401/4 17 413/4 71/2 10 421/4541/4 11 553/4 71/2 10 561/4

2224

1112


Fig. 5 -- 420F Furred-In High-Static Horizontal Unit with Plenum Dimensions

FACEAREA(sq ft)

1.351.882.313.16

UNITWEIGHT*

(Ib)

84

97

110

163

1 3 2

3 1

IJi

I

TOP_EW

8 9

"- -L I°.

O_ONAL REAR R_RN!

--11-,,,1

_[CTR_J_,L _,qqOC_SIN _P & BOOM 0_:

CONT_O_ 90X

LEGEND

"1-- Junction Box, Installed with Plenum2- Plenum3- Flexible Metal Conduit4-- Mounting Bracket

-- Electric Strip Heater ElementDrain Conn, 7/8-in. OD

-- Drip Lip (optional, shipped loose)Tell-Tale Drain Conn, 5/8-in. OD (optional)9- Filter

10-- Return Duct Collar, 1-in.11 -- Air Vent, 1/8-in. MPT12-- Access Panel13 -- Return Conn, 5/8-in. OD14 -- Supply Conn, 5/8-in. OD15 -- Supply Duct Collar, 1-in.16 -- Hanger Slots (4), Rubber Grommet has


NOTES:1.

2.

3.

4.5.

6.

7.

8.

Right hand unit shown; left hand unit opposite. Coil connectionlocations are _+5/8-inch.Unit sizes 04 thru 08 have one motor, 2 blowers; size 10 has2 motors, 4 blowers.Refer to above figure for configuration of filter and track ifinstalled in optional plenum.Overall dimension increases by 4 in. with optional electric heat.Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglassinsulation on inside of plenum (when installed), closed cellinsulation on main drain pan.Units have galvanized finish.For optional coil connections, view 42CA-203-1 using the FanCoil Builder.Dimensions shown in inches (mm).

UNITSIZE

04060810

NOMAIRFLOW

(Cfm)

4OO6OO8OO

1000

A _

DIMENSIONS (in.)

C D' E G H

311/4 431/4 26 281/4 15 293/4 61/4 83/4 301/4

361/4 431/4 34 331/4 10 343/4 71/2 10 351/4

431/4 571/4 38 401/4 17 413/4 71/2 10 421/4

571/4 651/4 52 541/4 11 553/4 71/2 10 561/4

QTY/UNIT

Blower Motor

2224

1112

FACEAREA(sq ft)

1.351.882.313.16


Fig. 6 -- 42CF Furred-In Horizontal Unit with Plenum and Electric Heat Dimensions

UNITWEIGHT*

(Ib)

8497

110163

10

(8#)

14571

TOP VIFW

C

L Jl

I._III._II

I._II

/15J

ii,, II

" IIII

II II

IL JL I

C

FROI'7 VIEW

2

6

8

PARTIALREARVEW_fP_ BO_N_051

RIGHT SIDE VIEW

LEGEND

1 -- Junction Box, 4 in, x 4 in,2 -- Optional Return Air Location3 -- Optional Drip Lip, shipped loose4 -- Mounting Holes (4), Rubber Grommets

have 3/8-in, Diameter Hole5- Electrical KO, 7/8-in, Diameter6- Return KO, 1-in, Diameter7 -- Supply KO, 11/2-in, Diameter8-- Drain KO, 11/2-in, Diameter9-- Supply, Return Connections, 5/8-in, OD

10-- Drain Connection, 7/8-in, OD11 -- Optional Valve Package (inside cabinet)12-- Filter13 -- Standard Stamped-Return Air Grille14 -- Removable Hinged Access Panel15 -- Supply Grille, Stamped, Standard

NOTES:1, Right hand unit shown; left hand unit opposite, Coil connection locations

are _+5/8-inch,2, Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08

have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers,3, Cabinet has an Arctic White baked finish,4, Refer to supply and return connections above for coil stub-out locations,5, Not shown: optional drip lip, 3-speed fan switch; wall plate, 1/2-in, fiber-

glass insulation on inside of casing, closed cell foam on main drain pan,6, For optional coil connections, view 42CA-203-1 using the Fan Coil

Builder,7, Valve package is factory-installed inside the cabinet when ordered with

the unit (based on component size),8, Dimensions shown in inches (mm),

UNITSIZE

02030406081012


(Cfm) A B C E F G

200 38 171/8 107/16 34 53/4 11

300 42 211/2 101/4 38 53/4 11400 48 257/8 111/16 44 53/4 11600 53 348/8 93/16 49 63/4 12

800 60 39 101/2 56 63/4 121000 74 521/8 1015/16 70 63/4 121200 82 607/8 109/16 78 63/4 12

QTY/UNIT

Blower Motor

1 1

1 12 12 1

2 14 24 2

FACEAREA(sq ft)

0.83

1.081.351.88

2.313.163.65

UNITWEIGHT*

(Ib)

98

118126168

176215245


Fig. 7 -- 420G Horizontal Cabinet Unit Dimensions

1!

2

L_

r.... ;

TOP VIEW

_,r ,.

I,--11, II

//

16-/

FRONTVIEW

LEGEND

1 -- Junction Box, 4 in. x 4 in.2 -- Optional Stamped Rear Return Grille3 -- Optional Drip Lip, shipped loose4 -- Electric Strip Heater Element5 -- Mounting Holes (4), Rubber Grommets

have 3/8-in. Diameter Hole6 -- Electrical KO, 7/8-in. Diameter7- Return KO, 1-in. Diameter8 -- Supply KO, 11/2-in. Diameter9- Drain KO, 11/2-in. Diameter

10-- Drain Connection, 7/8-in. OD11 -- Optional Valve Package (inside cabinet)12-- Filter13 -- Standard Stamped-Return Air Grille14 -- Removable Hinged Access Panel15 -- Supply, Return Connections, 5/8-in. OD16 -- Supply Grille, Stamped, Standard

NOTES:1.

4

I I 2

C

7

PAR_ALR_R VIM_¥gir,,_AtBOT'_$_r_)

11

_12

RIGHTSIDE'_,a_

Right hand unit shown; left hand unit opposite. Coil connectionlocations are _+8/8-inch.

2. Unit sizes 02 and 03 have one motor, one blower; sizes 04through 08 have one motor, 2 blowers; sizes 10 and 12 have2 motors, 4 blowers.

3. Cabinet has an Arctic White baked finish.4. Refer to supply and return connections above for coil stub-out

locations.5. Not shown: optional drip lip, 3-speed fan switch; wall plate,

1/2-in. fiberglass insulation on inside of casing, closed cell foamon main drain pan.

6. For optional coil connections, view 42CA-203-1 using the FanCoil Builder.

7. Valve package is factory-installed inside the cabinet whenordered with the unit (based on component size).

8. Dimensions shown in inches (mm).

UNITSIZE

02030406081012

NOM DIMENSIONS (in.) QTY/UNITAIRFLOW

(Cfm) A B C E F G Blower Motor

200 38 171/8 107/16 34 53/4 11 1 1

300 42 211/2 101/4 38 53/4 11 1 1400 48 257/8 111/16 44 53/4 11 2 1600 53 345/8 93/16 49 63/4 12 2 1

800 60 39 101/2 56 63/4 12 2 11000 74 521/8 1018/16 70 63/4 12 4 21200 82 607/8 109/16 78 63/4 12 4 2


Fig. 8 -- 420G Horizontal Cabinet with Electric Heat Dimensions


0.83 981.08 1181.35 1261.88 1682.31 1763.16 2153.65 245

12

F FLEXIBLE METAL

CONDUIT

_ .................................. , r_ z

JUNCTION BO_XX _"J

(REMOTE )UNT)

1-1/2 Y(38)-- ,I E

1-1/8 MTG.HOLES(29)_

2-1/4 4 B

(57) _ ,J ^

r .... .-iI !i. .... J

ml I1

'............... " _,,,]-]I,'_I

D=

1(25)

7/8"(22) O.D.CONDENSATE

DRAIN

3_(76)

TOP VIEW

OPTIONAL

5/8"(16) O.D.TELL-TALE

DRAINCONNECTION,

AVAILABLE

ONSTANDARD-"_ flAND EXTENDED

DRAINPANS/]'_

i-4i-

OPTIONAL EXTENDED

k"m_ u _ I DRAIN PAN (SEE NOTE 2)

/

3/4

RESILIENTMOUNTING GROMMETW/3/8"(10) DIA. HOLES (TYP.OF 4)

H

EL3/4

_(19) CHILLED/HOTWATER

RETURNCONNECTIONS

A

FRONT VIEW

"_ k"L OPTIONALI I \ DRIPLIP

"/ I --SHIPPED1_-16--_ LOOSE

(406) (NOTE 5)

1(25)'_'-

1"(25)

7/8 SUPPLY

_'-(22) DUCT _COLLAR

19-3/4

(502)8-3/8-'_ (213) '_'-

I f:_'22"" SEE NOTE

} ) / 1

RIGHT SIDE VIEW

UNITSIZE

04O6O810

NOMAIRFLOW

(Cfm) A A'

400 311/4 431/4600 361/4 431/4800 431/4 571/4

1000 571/4 651/4

DIMENSIONS (in.)

B D' E F G

QTY/UNIT

H Blower Motor

26 15 2814 614 834 2934

31 10 3314 716 10 343_

38 17 4014 716 10 4134

52 11 5414 716 10 5534

222

4

111

2

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.NOTES:

1. Right hand unit shown, left hand unit opposite.2. Optional drip lip not required with optional extended drain pan.3. All dimensions are _+ 1/4 inch.4. Product specifications are subject to change without notice.5. Drip lip recommended.6. Threaded fittings must be field tightened and leak tested.

Fig. 9 -- 420H Furred-In High-Static Horizontal Unit Dimensions


1.35 621.88 732.31 82

3.16 128

13

_- CONTACTOR BOX

x_l _(REMOTE MOUNT

-- FLEXIBLE METAL/" CONDUIT

t___J L..... , OPTIONAL

5/8"(16) O.D.

f STRIP HEATER TELL-TALEDRAIN

CONNECTION,1 AVAILABLE

(2S) ON STANDARD_

AND EXTENDED "_,_.DRAIN PANS _n

/j,_ i_H

I,_- I CONDENSATE i'._:::_ DRAIN

_!]-,,_ -_': I _OPT,ONALEXTENDEDI_ D''''''"_ I DRAIN PAN (SEE NOTE 2)

I

_/'------- A'------_

16

(152)

1-1_

'1-1/8

(29)_

2-1/4(57)

-r

EMTG. HOLES

A

TOP VIEW

3

RESILIENT MOUNTING GROMMETW/3/8"(10) DIA. HOLES (TYP. OF 4)

1G

1

3/4(19)

H

E

1 "(25)SUPPLY

= DUCTCOLLAR_

-:-1 _._3/4 7/B/I (19) F(22)

WATERSUPPLY &RETURNCONNECTIONS

_-OPTIONALDRIP LIP(NOTE 5)

A. SHIPPEDLOOSE

FRONTVIEW

G

23-3/4(603)

VENT

f11-1/4

(286)

RIGHTSIDE VIEW

UNITSIZE

04

O6O810

NOMAIRFLOW

(Cfm)

4OO6OO8OO

1000

DIMENSIONS (in.)

A' B D' E F

QTY/UNIT

Blower Motor

3114 4314 26 15 2814 614 834 2934

3614 4314 31 10 3314 71_ 10 3434

4314 5714 38 17 4014 71_ 10 4134

5714 6514 52 11 5414 71_ 10 5534

2224

1112

FACEAREA(sq ft)

1.351.882.313.16

UNITWEIGHT*

(Ib)

627382

128

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.NOTES:

1. Right hand unit shown, left hand unit opposite.2. Optional drip lip not required with optional extended drain pan.3. All dimensions are _+ 1/4 inch.4. Product specifications are subject to change without notice.5. Drip lip recommended.6. Threaded fittings must be field tightened and leak tested.

Fig. 10- 42CH Furred-In High-Static Horizontal Unit with Electric Heat Dimensions

14

1(25) E

TOP VIEW

5j/r,___ ,t., 6

PARTIAL REAR VIEW(TYPICAL BOTH _DES)

6-1s'8

- A+ +:, -,._,._..,.,";,_ /

LMIN+ _28_ I ![11111:,, ';_Iill

? U.......::.......I D +1

FRONT Vl EW

LEGEND

1 -- Junction Box2 -- Optimal L-shape Drip Lip, shipped loose3 -- Chilled/Hot Water Supply and Return Connection4 -- Resilient Mounting Grommets with 3/8-in. Diameter Hole

(typically 4)5 -- Electrical KO, 7/8-in. Diameter6 -- Drain KO, 11/2-in. Diameter7 -- Stamped Return Air Grille and 1-in. Filter8 -- Condensate Drain Connection, 7/8-in. OD9 -- Hinged Bottom Return Air Panel

10 -- Supply Duct Collar, 1-in. OD

NOTES:1.2.

3.

4.

1-1/'2

1-1/4- -- 24(32) - (610)

20_3/4 L 1-1/2

___ I (527) _ I-- (_8)

IF.....F<,:+.........[ _PP__v:i i \i +_. ",I AIR I' "' _ / "_ i # , I

+JL .......2:::.............L9 RE 7

8 _/R I_RIGHT SIDE VIEW

Right hand unit shown; left hand unit opposite.Internal factory valve package and drains may not align with cabinetknockouts.Dimensions shown in inches (mm). All dimensions are _+1/4inches.Bottom panel is Arctic White polyester powder coat paint.

UNITSIZE

0203O406081012


(Cfm) A B C D

200 35 16 123/4 37300 35 20 83/4 37400 41 26 83/4 43600 53 31 153/4 55800 53 38 83/4 55

1000 75 52 163/4 771200 75 60 83/4 77

32

32

38

50

50

72

72

666

777

7

QTY/UNIT BOTTOMRETURN

Blower Motor FILTER SIZE(in.)

1 1 10 x 231/21 1 10 x 28

2 1 10 x 321/22 1 10x372 1 10x41

4 2 10 x 541/24 2 10x63

UNIT WEIGHT*(Ib)

11512O135

15O155227

241


Fig. 11 -- 420K Horizontal Cabinet Unit with Telescopic Access Panel,Front Supply, and Bottom Return Dimensions

15

1 2

E

TOP VIEW

-4

,,- 5

,--6

1

"_72s)

@@j/I _ ® S

PARTIAL REAR VIEW{TYPICAL BOTH S_DES)

D

FRONT VIEW

1-1/2{38)

1-114 (sS_(s2}

I - (S27)

' [ "-,,:' '! ; i

" 4b=_,"_ '"'_J/ /

j/

_/// RETURN "- 9AIR

10RIGHT SIDE VIEW

1-1!2(SS)

1 --

2--3--4--5--6--

7 --

8--9--

10--11 --12--

LEGEND

Contactor BoxStrip Heater High LimitElectric Strip Heater ElementOptimal L-shape Drip Lip, shipped looseChilled/Hot Water Supply and Return ConnectionResilient Mounting Grommets with 3/8-in. Diameter Hole(typically 4)Electrical KO, 7/8-in. DiameterDrain KO, 11/2-in. DiameterStamped Return Air Grille and 1-in. FilterCondensate Drain Connection, 7/8-in. ODHinged Bottom Return Air PanelSupply Duct Collar, 1-in. OD

NOTES:1. Right hand unit shown; left hand unit opposite.2. Internal factory valve package and drains may not align with

cabinet knockouts.3. Dimensions shown in inches (mm). All dimensions are

+1/4 inches.4. Bottom panel is Arctic White polyester powder coat paint.

UNITSIZE

0203O406081012

NOM DIMENSIONS (in.) QTY/UNIT BOTTOMAIRFLOW RETURN

A B C D E F Blower Motor FILTER.SIZE(Cfm)

200 35 16 123/4 37 32 6 1 1 10 x 231/2300 35 20 83/4 37 32 6 1 1 10 x 28400 41 26 83/4 43 38 6 2 1 10 x 321/2600 53 31 153/4 55 50 7 2 1 10 x 37800 53 38 83/4 55 50 7 2 1 10 x 41

1000 75 52 163/4 77 72 7 4 2 10 x 541/21200 75 60 83/4 77 72 7 4 2 10 x 63

UNIT WEIGHT*(Ib)

117122137152157229243


Fig. 12 -- 420K Horizontal Cabinet Unit with Telescopic Access Panel,Front Supply, Bottom Return, and Heater Dimensions

16

E

TOP VIEVV

,-3

,-4

/-5

1(25)

V6 7

PARTIAL REAR VIEW('T_fPICAL BOTH SIDES)

oI _ I [_ n,",,".*.',"._ I-';...........

MIN. , I _lllllll,, "_'' I

7 U !,FRONT VIEW

1q/2

1-1/4 24

(s2) = I (e_o) Ii_l i 20-3/4/ I (527) _ I-- (3,8)

F-j4 ...... . 8

I 6tIKIf!AIR I' h _' ff "_ I I

_lil I _, '-..' , , HI _ RETURN

::::.......

I m

2--3--4--5--

6 m

7--8--9--

10--11 --

LEGEND

Junction Box1-in. Ducted Rear Return and 1-in. FilterOptimal L-shape Drip Lip, shipped looseChilled/Hot Water Supply and Return ConnectionResilient Mounting Grommets with 3/8-in. Diameter Hole(typically 4)Electrical KO, 7/8-in. DiameterDrain KO, 11/2-in. Diameter1-in. Ducted Rear Return and 1-in. FilterCondensate Drain Connection, 7/8-in. ODHinged Bottom Return Air PanelSupply Duct Collar, 1-in. OD

NOTES:1. Right hand unit shown; left hand unit opposite.2. Internal factory valve package and drains may not align with

cabinet knockouts.3. Dimensions shown in inches (mm). All dimensions are


UNITSIZE

02030406081012


(Cfm) A B C D E F

200 35 16 123/4 37 32 6

300 35 20 83/4 37 32 6400 41 26 83_ 43 38 6600 53 31 153/4 55 50 7

800 53 38 83/4 55 50 71000 75 52 163/4 77 72 71200 75 60 83/4 77 72 7

OTY/UNIT

Blower Motor

1 1

1 12 12 1

2 14 24 2

REAR RETURNFILTER SIZE (in.)

7x21

7x217x277x38

7x387x527x52

UNIT WEIGHT*(Ib)

115

120

135150

155

227241


Fig. 13 -- 420K Horizontal Cabinet Unit with Telescopic Access Panel,Front Supply, and Rear Return Dimensions

17

2

£

TOP VIEW

,a@@

/4_© @

%J

PARTIAL REAR VIEW(T'(P_CAL @OTN S_DE5}

FRONT VIEW

t-1/2lSS}

-tL2

_321 "_ {61 N

20-_/4 1 - I/2{s27) _l I - (s8}

...... Am13-_'= ..........................................[[ .................................................................................,

11RIGHT SIDE ViEW

I --

2--3--4--5--6--7--

8 --

9--10--11 --12--13--

LEGEND

Contactor BoxStrip Heater High LimitElectric Strip Heater Element1-in. Ducted Rear Return and 1-in. FilterOptimal L-shape Drip Lip, shipped looseChilled/Hot Water Supply and Return ConnectionResilient Mounting Grommets with 3/8-in. Diameter Hole(typically 4)Electrical KO, 7/8-in. DiameterDrain KO,11/2-in. Diameter1-in. Ducted Rear Return and 1-in. FilterCondensate Drain Connection, 7/8-in. ODHinged Bottom Return Air PanelSupply Duct Collar, 1-in. OD

NOTES:1. Right hand unit shown; left hand unit opposite.2. Internal factory valve package and drains may not align

with cabinet knockouts.3. Dimensions shown in inches (mm). All dimensions are


UNITSIZE

02030406081012

NOMAIRFLOW

(Cfm) A

200 35300 35400 41

600 53800 53

1000 75

1200 75

DIMENSIONS (in.) QTY/UNIT

B C D Blower Motor

1 11 12 1

2 12 1

E F

16 123_ 37 32 6

20 83/4 37 32 6

26 83/4 43 38 6

31 153_ 55 50 7

38 83/4 55 50 7

REAR RETURN

52 163/4 77 72 760 83/4 77 72 7

4 2

4 2

FILTER SIZE (in.)

7x217x217x27

7x387x387x52

7x52

UNIT WEIGHT*(Ib)

117122137

152157229

243


Fig. 14 -- 420K Horizontal Cabinet Unit with Telescopic Access Panel,Front Supply, Rear Return, and Heater Dimensions

18

rzJ r---]

i

1i-r -FI III

i IIi .iL

llr F-i

I ,11 iii

!_ILL ..................................... ._.;

E 3E _E 3E 3E _E 3zzzz zzzz zzzz zzzz zzzz zzzzL .... _L .... _L .... _L .... _L .... _L .... JL .... _L .... _L .... _L .... _L .... _L .... J

L JL L L L LL .... _L .... _L .... _L .... _L .... _L ....

E

TOP VI[W

4

AI°°¸°L

PA_L R_R VIEW7 _'€_L g'OT_5_S_

-14/2138)

'C ')_ IMINo I I

/ /

P ° -IFRONTVIEW

LEGEND

1 -- Junction Box, 4 in. x 4 in.2- Optional Drip Lip, shipped loose3 -- Mounting Holes (4), Rubber Grommets

have 3/8-in. Diameter Hole4- Piping KO, 11/2-in. Diameter5 -- Electrical KO, 7/8-in. Diameter6- Drain KO, 11/2-in. Diameter7-- Supply Duct Collar8-- Return Connection, 5/8-in. OD.9 -- Optional Rear Return. Consult factory for

collar dimensions.10-- Drain, 7/8-in. OD.11 -- Stamped Bottom Return Air Grille12-- Filter13 -- Stamped Air Supply Grille14 -- Hinged Bottom Access Panel15 -- Supply Connection, 5/8-in. OD.

RIGHTSIDEVIEW

UNITSIZE

0203O406081012

NOTES:1, Right hand unit shown; left hand unit opposite, Coil connection

locations are _+5/8-inch,2, Unit sizes 02 and 03 have one motor, one blower; sizes 04

through 08 have one motor, 2 blowers; sizes 10 and 12 have2 motors, 4 blowers,

3, Bottom access panel has an Arctic White baked finish,4, Refer to supply and return connections above for coil stub-out

locations,5, Not shown: optional drip lip, 3-speed fan switch; wall plate,

1/2-in, fiberglass insulation on inside of casing, closed cell foamon main drain pan,

6, For optional coil connections, view 42CA-203-1 using the FanCoil Builder,

7, Valve package is factory-installed inside the cabinet whenordered with the unit (based on component size),

8, Bottom return or bottom supply is an ETO (engineering to order)request,

9, Dimensions shown in inches (mm),

NOMAIRFLOW

(Cfm)

2OO

3OO4OO6OO

8OO10001200

A

35

354153

537575

DIMENSIONS (in.)

D

37

374355

557777

E

32

32

38

50

50

72

72

OTY/UNIT

Blower Motor

1 1

1 12 12 1

2 14 24 2

FACE AREA(sq ft)

0.83

1.081.351.88

2.313.163.65

UNITWEIGHT*(Ib)

115

120135150

155227241


Fig. 15 -- 420K Horizontal Cabinet Unit with Telescopic Access Panel Dimensions

19

t t25) 2 3

....

TOP VIEW

,,i A J"

_4"1_56) /

! ,

I_, D _1

F_NTVI_V

5

-i_5)

f_--4-I/2138)

t-If2._(38)

17_

16..--_

15.."°

_' (isz_--

6

PARTIALREARViEW

9

3o._'4 -I _-Hs2°81-- (78t) -

G>o f 1°

14 13 /_R

RIGHTSIDEVIEW

LEGEND

1 -- Junction Box, 4 in. x 4 in.2 -- Strip Heater High Limit3 -- Electric Strip Heater Element4 -- Optional Drip Lip, shipped loose5 -- Mounting Holes (4), Rubber Grommets

have 3/8-in. Diameter Hole6- Piping KO, 11/2-in. Diameter7 -- Electrical KO, 7/8-in. Diameter8- Drain KO, 11/2-in. Diameter9 -- Supply Duct Collar

10 -- Optional Rear Return. Consult factory forcollar dimensions.

11 -- Drain, 7/8-in. OD.12 -- Stamped Bottom Return Air Grille13-- Filter14 -- Stamped Air Supply Grille15- Hinged Bottom Access Panel16 -- Supply Connection, 5/8-in. OD.17- Return Connection, 5/8-in. OD.




3. Bottom access panel has an Arctic White baked finish.4. Refer to supply and return connections above for coil stub-out

locations.5. Not shown: optional drip lip, 3-speed fan switch; wall plate,

1/2-in. fiberglass insulation on inside of casing, closed cell foamon main drain pan.

6. For optional coil connections, view 42CA-203-1 using the FanCoil Builder.

7. Valve package is factory-installed inside the cabinet whenordered with the unit (based on component size).

8. Bottom return or bottom supply is an ETO (engineering to order)request.

9. Dimensions shown in inches (mm).

UNIT SIZE

0203O406081012

NOM AIRFLOW(Cfm)

2OO

3OO4OO6OO

8OO10001200

DIMENSIONS (in.)

A D

35 37

35 3741 4353 55

53 5575 7775 77

E

32

32

38

50

50

72

72

QTY/UNIT

Blower Motor

1 1

1 12 12 1

2 14 24 2

FACE AREA(sq ft)

0.83

1.081.351.88

2.313.163.65

UNITWEIGHT*

(Ib)

117

122

137

152

157

229

243


Fig. 16 -- 420K Horizontal Cabinet with Telescopic Access Panel and Electric Heat Dimensions

2O

DISCHARGE AIR OPENING

TOP VI

10"

I_o21

5-3J'4

L .....

L- .....

,,_-----i

"7

I -l/2

t/ _ _4 (38)(i #)

- F_LTE£fl}Er_Nr_,:CUP5

L ..............................................

4-t12

': (_141

1i

"1r .......

JI .........

i

FRONT V]EW

L

_9

24/4( sT_

8 j

7_

_ET_ N{ 3(761

-:._8(41)

5

fr"""""_.

7-;.%_8

_-t/41235)

RIGHTSiDE VIEW

2

_5

_6

LEGEND

1 -- Optional Unit Mounted Control Box2 -- Wall Mounting Holes (4), 3/4-in. Diameter3- Drain, 3/4-in. MPT4 -- Drain Pan, Auxiliary, Shipped Loose5 -- Supply Conn, 5/8-in. OD6 -- Return Conn, 5/8-in. OD7- Filter8 -- Air Vent, 1/8-in. MPT9-- Discharge Opening

10-- Flexible Conduit11 -- Front Access Panel

NOTES:1. Right hand unit shown; left hand unit opposite. Coil connection locations

are _+5/8-inch.2. Unit sizes 02 and 03 have one motor, one blower; sizes 04 through 08

have one motor, 2 blowers; sizes 10 and 12 have 2 motors, 4 blowers.3. Standard 3-row coil shown.4. Optional unit-mounted switch box and controls, when specified, are

installed on opposite side from cooling connections.5. Not shown: 3-speed fan switch; wall plate, 1/2-in. fiberglass insulation on

inside of casing, closed cell foam on main drain pan.6. Units have galvanized finish.7. For optional coil connections, view 42VA-203-1 using the Fan Coil


UNITSIZE

02030406081012

NOMAIRFLOW

(Cfm)

2OO3OO4OO6OO8OO

10001200

A

25293545476169

DIMENSIONS (in.)

B C

22 231/2

26 271/232 331/242 431/2

44 451/258 591/266 671/2

D

16

20

26

36

38

52

60

QTY/UNIT

Blower Motor

1 11 12 12 12 14 24 2

FACEAREA(sq ft)

0.831.081.351.882.313.163.65

UNITWEIGHT*

(Ib)

658O9O

11211514O17O


Fig. 17 -- 42VA Furred-In Vertical Unit Dimensions

21

TOPVIEW

l _ "3J4

_)

11 J

i | nb .... _ r .......... 'I ,i,---r_P.mumi Imm *r..... "m n ! mnnlmm m| m m | _,|mm'" ,I. ..... ' me...... I ' ' \_'"

/'_, III j ........ m,- m Lm : _II_+. | m I n I- ,,-N I _ n.... : f , ........

m n! n n !

r, n i inn nn nnm_| ......... --_! m r _ .... %:::::::::::::T,:==_ _ ................ mmm 5_m_. ....................... _ m_l

,,_i I _ ..... II 1127)REiN NR OPENIiNG

4

,,,',' I:: I

" L I1o j 8-3/4 c 8-3/4

(,22:2) _NT)NG HOLES 122:2)__l_ o l g4/2(240 \ _4_)

FRONTV(EW cups

_-9

7 -_

_ETI__tN )

t-I/213_)

5-'_12 2

Fi_40)"("-'] I_i)

"-4

m

L,-,,2J

RIGHTSlOE'VIEW

LEGEND

1 -- Standard Stamped Supply Grille2- Access Door, Fan Switch3 -- Supply Conn, 5/8-in. OD4 -- Return Conn, 5/8-in. OD5- Drain, 3/4-in. MPT6- Filter7 -- Air Vent, 1/8-in. MPT8-- Front Panel Fastener9- Drain Pan, Auxiliary, Shipged Loose

10- Wall Mounting Holes (4), _/4-in. Diameter11 -- Flexible Conduit12- Fan Switch, 3-speed13 -- Front Access Panel

NOTES:1, Right hand unit shown; left hand unit opposite, Coil connection

locations are _+5/8-inch,2, Unit sizes 02 and 03 have one motor, one blower; sizes 04 through

08 have one motor, 2 blowers; sizes 10 and 12 have 2 motors,4 blowers,

3, Standard 3-row coil shown,4, Cabinet has an Arctic White baked finish,5, Stamped supply grille standard, Optional single or double deflec-

tion grilles available,6, Not shown: 1/2-in, fiberglass insulation on inside of casing, closed

cell foam on main drain pan,7, For optional coil connections, view 42VA-203-1 using the Fan Coil

Builder,8, Dimensions shown in inches (mm),

UNITSIZE

0203

040608

1012

NOMAIRFLOW

(Cfm)

2OO3OO4OO6OO8OO

10001200

A

41455161637785

22263242445866

DIMENSIONS (in.)

C D

35/831/241/4

23/433/441/4

33/4

QTY/UNIT

Blower Motor

1111122

231/2271/2331/2

431/2451/2591/2671/2

171/4211/2

2639395261

1122244

FACEAREA(sq ft)

0.831.081.351.882.313.163.65


Fig. 18 -- 42VB Vertical Cabinet Unit Dimensions

UNITWEIGHT*

(Ib)

89

95

116

134

137

169

192

22

1gJ

9-1/4

flr ........ "4 _ I- ........ 1

TOPVIEW

_2

3-1/4

_)

_4

12 _ "'"

€

[17_AL,f/

__.... dJJi r---, !!I'_L ! II

'--Er---L1_I I',cl

Ii "

13 f14

;I iI I

I] _ ,i o

II _ .... LF_

i l--- -4_-

, ,-- 4 I

I

J

r _----_ _ r _ [-11',IIF" ..... L r"ll tl_i c: _#i i r_ f _Li i i i i r L

. I L • i LEE • I I I" "_ _ ....A I l " I J I ' _..................... _ hi

-5"......... :: ..... :::::::::::::::::::::::::: ........ -,"','', [12.7)" RET_JRNAmOKNING "\ i [

C \'\ 8-3/4

M,OU_I_ HOU:_

FRONT _[W _Ps

,-8

j9

"'-10

1-¢]4(32:1

7 j

6"_

I_T_NAIR 17 )

1-1 _:

%g

f_',q

LEGEND

1 -- Standard Stamped Supply Grille2- Access Door, Fan Switch3 -- Supply Conn, 5/8-in. OD4-- Return Conn, 5/8-in. OD5-- Drain, 3/4-in. MPT6-- Filter7- Air Vent, 1/8-in. MPT8-- Front Panel Fastener9 -- Optional Valve Package (inside cabinet)

10-- Drain Pan, Auxiliary, Shipped Loose11 -- Wall Mounting Holes 3/4-in. Diameter12-- Flexible Conduit13-- Fan Switch, 3 speed14-- Access Doors

j3

_4

_5

9- I_

RIGHT SIDE VIEW




3. Standard 3-row coil shown.4. Cabinet has an Arctic White baked finish.5. Not shown: 1/2-in. fiberglass insulation on inside of casing,

closed cell foam on main drain pan.6. For optional coil connections, view 42VA-203-1 using the Fan

Coil Builder.7. Valve package is factory-installed inside the cabinet when

ordered with the unit (based on component size).8. Dimensions shown in inches (mm).

UNITSIZE

0203O406081012

NOMAIRFLOW

(Cfm)

2OO3OO4OO6OO8OO

10001200

A

41455161637785

B

DIMENSIONS (in.)

C D

35/831/241/423/433/441/433/4

QTY/UNIT

Blower Motor

1111122

22263242445866

231/2271/2331/2431/2451/2591/2671/2

171/4211/2

263939

521/861

1122244

FACEAREA(sq ft)

0.831.081.351.882.313.163.65


Fig. 19 -- 42VF Vertical Cabinet Unit with Slant Top Dimensions

UNITWEIGHT*

(Ib)

9298

1221411441782O5

23

i0 s2/

I

//--J

(DISCHARGE AIR OPENING

.B

A

TOP VIEW

(1s2)

FRON_ VIEW

1-1Z829)

5 I

_TU_N

3_76)

1-1/8(29)

10

I _-If8

RIGHTSi[DE _E_

LEGEND

1 -- Optional Unit Mounted Control Box2 -- Drain Pan, Auxiliary, Shipped Loose3 -- Supply Conn, 5/8-in. OD4 -- Drain, 3/4-in. MPT5 -- Return Conn, 5/8-in. OD6 -- Air Vent, 1/8-in. MPT7 -- Discharge Opening8- Filter


locations are _+5/8-inch.2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06

has 2 motors, 4 blowers.3. Standard 2-row coil shown.4. Optional unit-mounted switch box and controls, when specified,

are installed on opposite side from cooling connections.5. Height increases by 2 in. with electric heat.6. Not shown: 3-speed fan switch, 1/2-in. fiberglass insulation on

inside of casing, closed cell foam on main drain pan.7. Units have galvanized finish.8. For optional coil connections, view 42VC-203-1 using the Fan

Coil Builder.9. Dimensions shown in inches (ram).

_3

_4

UNIT SIZE

02030406

NOMAIRFLOW

(Cfm)

2OO3OO4OO

6OO

A

23

28

36

50

DIMENSIONS (in.)

B

222735

49

C

17223o

44

QTY/UNIT

Blower Motor

2 12 12 1

4 2

FACE AREA(sq ft)

1.181.532.08

3.06


UNITWEIGHT* (Ib)

506072

110

Fig. 20 -- 42VC Furred-In Lowboy Unit Dimensions

24

DISCHARGE AIR OPENING

TOP VIEW

FRO_ VIEW

LEGEND

1 -- Unit-Mounted Control Box (Optional)2- Drain Pan, Auxiliary, Shipped Loose3- Air Vent, 1/8-in. MPT4 -- Supply Conn, 5/8-in. OD5-- Drain, 3/4-in. MPT6-- Return Conn, 5/8-in. OD7- Filter8-- Electrical Sheath Heater Element9-- Discharge Opening

RMGHTSIDEVIEW


locations are _+5/8-inch.2. Unit sizes 02 through 04 have one motor, 2 blowers; size 06 has

2 motors, 4 blowers.3. Standard 2-row coil shown.4. Optional unit-mounted switch box and controls, when specified,

are installed on opposite side from cooling connections.5. Height increases by 2 in. with electric heat.6. Not shown: 3-speed fan switch, 1/2-in. fiberglass insulation on

inside of casing, closed cell foam on main drain pan.7. Units have galvanized finish.8. For optional coil connections, view 42VC-203-1 using the Fan Coil


3

4

UNIT SIZE

02030406

NOMAIRFLOW

(Cfm)

2OO3OO4OO6OO

A

23

28

36

50

DIMENSIONS (in.)

B

22273549

C

17223044

QTY/UNIT

Blower Motor

2 12 12 14 2

FACE AREA(sq ft)

1.181.532.083.06


UNITWEIGHT* (Ib)

5O6O72

110

Fig. 21 -- 42V0 Furred-In Lowboy Unit with Electric Heat Dimensions

25

i ...... 7

I

IL J Jp L-.......J

iL J

I(127)

1211/4

_-1/4

FRONT VIEW RIGHTSIDEVIEW

LEGEND

1 -- Fan Switch, 3-Speed, behind Access Door2-- Front Panel Fastener3-- Stamped Supp_lyGrille4 -- Supply Conn,b/8-in. OD5-- Return Conn, 5/8-in. OD6- Stamped Return Grille7- Filter8-- Air Vent, 1/8-in. MPT9- Optional Valve Package (inside cabinet)

10-- Drain Pan, Auxiliary, with 3/4-in. MPTDrain Connection

11 -- Return Air Grille



2 motors, 4 blowers.3. Cabinet has an Arctic White baked finish.4. Height increases by 2 in. with electric heat.5. Standard 2-row coil shown.6. Not shown: 1/2-in. fiberglass insulation on inside of casing,

closed cell foam on main drain pan.7. For optional coil connections, view 42VC-203-1 using the Fan



_4

_5

UNIT SIZE

02030406

NOMAIRFLOW

(Cfm)

200300

400600

A

4146

5468

DIMENSIONS (in.)

B C

22 33427 435 3 5&

49 41/16

17

211/23ol/4433/8

OTY/UNIT

Blower Motor

2 12 1

2 14 2


Fig. 22 -- 42VE Cabinet Lowboy Unit Dimensions

FACE AREA(sq ft)

1.181.53

2.083.06

UNITWEIGHT*

(Ib)

72100

108154

26

TOP k4EW

/r _i{i -L-_'-'-'' ii

r----i r---F_ "i k '_t", [ )_. .....E i

1_ ..... 1 "--_qi

i i' 1i i1 ,

ii iL ..... IN

: ; ____a i "r'r ..... %%

k

_411 i i (241) --

1

9

jlO

t6-d:

(2e)

iR_URNAIR -!,.

!_____

1701

t2-1 f4

',i, _ L.I_=_ /= /

L I0-I14

/4

--5

FRONTVi_

LEGEND

1 -- Fan Switch, 3-Speed, behind Access Door2 -- Electrical Sheath Heater Element

-- Stamped SuppslYGrille3 Supply Conn, /8-in. OD5 Return Conn, 5/8-in. OD6-- Stamped Return Grille7-- Filter8-- Air Vent, 1/8-in. MPT9-- Front Panel Fastener

10-- Optional Valve Package (inside cabinet)11 Drain Pan, Auxiliary, with 3/4-in. MPT

Drain Connection12 -- Return Air Grille

RIGHTSIDEVEW



2 motors, 4 blowers.3. Cabinet has an Arctic White baked finish.4. Height increases by 2 in. with electric heat.5. Standard 2-row coil shown.6. Not shown: 1/2-in. fiberglass insulation on inside of casing,

closed cell foam on main drain pan.7. For optional coil connections, view 42VC-203-1 using the Fan



UNIT SIZE

02030406

NOMAIRFLOW

(Cfm)

2OO

3OO4OO6OO

A

41

465468

DIMENSIONS (in.)

B C

22 33/427 435 35/849 41/16

17

211/2301/4433/8

QTY/UNIT

Blower Motor

2 1

2 12 14 2

FACE AREA(sq ft)

1.18

1.532.083.06

UNITWEIGHT*

(Ib)

72

100

108154


Fig. 23 -- 42VE Cabinet Lowboy Unit with Electric Heat Dimensions

27

I

I

A

II

ITOPVIBN

S_

7_ 7J8 C 781221 _i

I ITOP VIEW

(STANDARDMOD_L_STY

I

(25)q1-

(t 27_

K1251

__z== 5....... 1' ;-- IIi i =1

I I , , I I I, ,, ,, , ,,II I I I Ii L .............. -LL----= i

L--_ ...........r-T _ i

, ,;_,,-_, _'. ............

: " " :: ._ I i I

,i .... i I I

FRONTNEW FRO_ ViEW RIGHTSIDE_EW

LEGEND

-- Supply Conn, 5/6-in. ODAir Vent, 1/8-in. MPT3- Filter4 -- Return Air Grille, Stamped

-- Stamped Supply GrilleReturn Conn, 5/8-in. OD7-- Removable Front Panel8-- Drain Conn, 7/8-in. OD9- Auxiliary Drain Pan

10-- Valve Compartment11 -- Junction Box


locations are _+5/8-inch.2. Front panel has an Arctic White baked finish.3. Standard 2-row coil shown.4. Unit size 01 has one motor, one blower; size 03 has 2 motors,

2 blowers.5. Unit has 1/2-in. flanges for mounting to wall surface.6. Front panel hooks at top of unit, swing down and snap in at bottom

against a spring clip.7. Not shown: 3-speed fan switch, wall plate, 1/2-in. fiberglass insula-

tion on inside of casing, closed cell foam on main drain pan.8. Dimensions shown in inches (mm).

UNIT SIZE

0103

NOMAIRFLOW

(Cfm)

1503OO

DIMENSIONS (in.)

A B C D E

253_ 153_ 14 11_ 123/4393_ 293_ 28 115/16 257_

QTY/UNIT

Blower Motor

1 12 2


Fig. 24 -- 42VG Furred-In Wall Unit Dimensions

UNITWEIGHT*

(Ib)

4074

28

.........1

6

9(228)

I-3:/4J

4-I/2_I14)-

2

3

TOP VIEW

11

MOUNTING HOLES

16-3_(416)

1

FRONTVIEW

4

/f__ ID RAIN OUTLET

I

(3815-3t4

t lpj '-- 046)[1S) --'7

1-3/4(299) _1

÷T1

C25I

lO_:3N

F g 9)

[lSUPPLY

16-3/8 13-1/2 A;_RC4161 1B43}

--27-1/2 {6gg) --

1H/2

-i , __-_-.+./.._ '7

RIGHT SIDE VIEW

T2

($11!

UNIT NOM DIMENSIONS (in. ± 1_) QTY/UNIT UNITSIZE AIRFLOW WEIGHT*

(cfm) A A' B D' E H Blower Motor (Ib)

06 600 23 32 14 131_ 17 181_ 1 1 64

08 800 28 37 19 131_ 22 231_ 1 1 79

10 1000 32 42 23 141_ 26 271_ 1 1 90

12 1200 37 47 28 141_ 31 321_ 2 2 108

14 1400 42 52 33 141_ 36 371_ 2 2 119

16 1600 47 56 38 131_ 41 421_ 2 2 124

18 1800 52 62 43 141_ 46 471_ 2 2 141

20 2000 56 66 47 141_ 50 511_ 2 2 151

LEGEND

1 -- Motor Junction Box

2-- Motor-Blower Assembly3 -- Electric Strip Heater Element (optional)4 -- Auxiliary Drip Lip (Optional, Shipped Loose)

_-- Tell-Tale Drain (optional)Drain Connection, 7/8-in. OD7 -- Air Vent, 1/8-in. MPT8-- Supply Connection9-- Supply Duct Collar, 1 inch

10-- Return Connection

11 -- Mounting Holes (four, 3/4-in. diameter) haveRubber Grommets with 3/8-in. holes.

*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and othercomponents.NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are + 5/8 inch.2. Sizes 06, 08 and 10 have one motor, one blower; sizes 12 through 20 have 2 motors, 2 blowers.3. Standard 4-row coil shown. Other coil option dimensional data available on request.4. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.5. Fan switch, wall plate not shown.6. Galvanized finish provided as standard.7. Dimensions are in inches (mm).

Fig. 25 -- 42DA Furred-In Ceiling Unit with Electric Heat Dimensions

29

-A

TOP VIEW

1

28q/2(724)

5

7

1-112_38) I

t i12J

DRAIN OUTLET1_-3/4

I" (2_)- 1

3!4

F

FRONT Vl EW

16

3:/4

12

14

OPTIONALR_RR_URN

10-

9 /

2-1/2_64)

2-112

d_e

__11

_4N(32)

RIGHTSIDE VIEW

UNIT NOM DIMENSIONS (in. ± 118) QTY/UNIT UNITSIZE AIRFLOW WEIGHT* 1 --

(cfm) A A' B D' E F G H Blower Motor (Ib) 2 --3--

06 600 23 32 14 131/2 17 21 251/4 181/2 1 1 94 4 --

08 800 28 37 19 131/2 22 26 301/4 231/2 1 1 107 5 --

10 1000 32 42 23 141/2 26 30 341/4 271/2 1 1 150 6 --

12 1200 37 47 28 141/2 31 35 391/4 321/2 2 2 169 7 --8--

14 1400 42 52 33 141/2 36 40 441/4 371/2 2 2 174 9 --

16 1600 47 56 38 131/2 41 45 491/4 421/2 2 2 178 10 --

18 1800 52 62 43 141/2 46 50 541/4 471/2 2 2 195 12 --20 2000 56 66 47 141/2 50 54 581/4 511/2 2 2 220 13 --

14--*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other 15-components. 16 --NOTES:

1. Right hand unit shown; left hand unit opposite. Coil connection locations are _+5/8 inch.2. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.3. Filter and filter rack are standard.4. Standard 4-row coil shown. Other coil option dimensional data available on request.5. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.6. Fan switch, wall plate not shown.7. Galvanized finish provided as standard.8. Dimensions are in inches (ram).

LEGEND

Motor Junction Box Opposite PipingInsulated Return Air PlenumMounting Clips (Shipped Loose)Electrical Strip Heater Element (optional)Auxiliary Drip Lip (Shipped Loose) with 3/8-in.HoleTell-Tale Drain (optional)Drain Connection, 7/8-in. ODFilter Retainer AngleAccess PanelReturn Duct Collar, 21/2 inchesAir Vent, 1/8-in. MPTReturn ConnectionFilter, 1-in.Supply Duct Collar, 1 inchSupply ConnectionMounting Holes (four, 3/4-in. diameter) withRubber Grommet

Fig. 26 -- 42DC Furred-In Ceiling Unit with Plenum and Electric Heat Dimensions

3O

/t 27) F

SUPPLY'AIROPENING

A

TOP VIEW

11

4-(_o2)

8

i'

J_/4 JIt _):

7 _j

_I"URNAIR

' ', /// ',':-.._LJ L

4

FRONT ViEW RIGHT SIDE VIEW

UNITSIZE

06

08

10

12

14

16

18

20

NOM DIMENSIONS (in. ± 1_) QTY/UNIT UNITAIRFLOW WEIGHT*

(cfm) A B C Blower Motor (Ib)

600 23 21 15 1 1 135

800 28 26 20 1 1 145

1000 32 30 24 1 1 155

1200 37 35 29 2 2 180

1400 42 40 34 2 2 190

1600 47 45 39 2 2 200

1800 52 50 44 2 2 215

2000 56 54 48 2 2 230

LEGEND

1 -- Motor Junction Box2 -- Air Vent, 1/8-in. MPT3-- Return Connection4 -- Optional 6-in. Legs5 -- Bottom Return (optional)6-- Return Air Opening7-- Supply Connection8-- Drain Connection, 7/8-in. OD9-- Front Access Panel

10-- Filter, Throwaway11 -- Electric Strip Heater Element (optional)12 -- Supply Duct Connection, 1-in.


1. Right hand unit shown; left hand unit opposite. Coil connection locations are _+5/8 inch.2. Standard 4-row coil shown. Other coil option dimensional data available on request.3. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.4. Supply and return connections terminate within unit when valves are factory installed.5. For optional coil connections, view 42DD-203-1 using the Fan Coil Builder.6. Fan switch and wall plate are not shown.7. Galvanized finish provided as standard.8. Units with internal factory valve packages have external connections located in triangular section

above coil.

9. Consult Carrier for ducted front return air and external filter rack with 1-in. duct collar and throwawayfilters.

10. Units with electric heat require additional access on the side of unit for servicing contactor box.11. With bottom return, access to filter is through the front access panel.12. Dimensions are in inches (mm).

Fig. 27 -- 42DD Vertical Unit with Full Casing and Electric Heat Dimensions

31

1

c 8

;11 L-h,il L-2_II J4;i i ' i ' iiii , ,,_, , ,,_, /11!iii ' Zi ....i....... .....i: iI I ii I I i _a" ii

ill ', _. ---" .... ----_---_ ii IIiiI I I r_ iiill ,',;. -- ......; llil, i ,, l--tic J i1

qt "* ", r" _1"

TOP VIEW

2

Z 3

4

li- 1/2" {38) D|A,_O, _._ .... j- 718" (22)

is-3!4 (9 el2 i I .,_ I ,_I (4®) I I (229) _:_r_ 345115 J I .,T, L{; I ! 4 ! '+' (_ool_._3s_I "r /

t I j(7_)L,,"

PARTIAL REARVlEW(TYP,BOTH SIDES)

24/2 , Di ¸ 6

_ RETIJRN:L_3. _ _ _ _ AiR

H_ II i i U r',v.,z-,;, / M'l[:il---+-

13 _I ,_, _=_--'r===5--_,-=a ....... IF '77o'+ _"'-'_ It" ........ -"- -'_, I _

FRONTVIEW

UNITSIZE

06

08

10

12

14

16

18

20

NOM DIMENSIONS (in. ± 1_) QTY/UNITAIRFLOW

(cfm) A B C D Blower Motor

600 31 15 15 26 1 1

800 36 20 20 31 1 1

1000 40 24 24 35 1 1

1200 45 29 29 40 2 2

1400 50 34 34 45 2 2

1600 55 39 39 50 2 2

1800 60 44 44 55 2 2

2000 64 48 48 59 2 2

RIGHTSIDEVIEW

LEGENDUNIT

WEIGHT* 1 -- Motor Junction Box(Ib) 2 -- Unit Mounting Channel (2), 14-gage; 4 Mounting

Slots, 1/2-in. x 2-in.150 3 -- Auxiliary Drip Lip (optional, shipped loose)160 4 -- Side Access Panels

170 5 -- Electrical Strip Heater Element (optional)6 -- Supply Air Duct Connection, 1 in.

195 7 -- Manual Air Vent

205 8 -- Filter, Throwaway, 1-in.9 -- Return Air Duct Connection, 21/2 in.

215 10-- Drain, 7/8-in. OD230 11 -- Bottom Access Panel

12-- Drain Pan235 13 -- Coil Inlet, Copper Sweat Connection

14 -- Coil Outlet, Copper Sweat Connection*Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves,and other components.NOTES:

1. Right hand unit shown; left hand unit opposite.2. Coil stub-out location data available on request.3. Unit fabricated of galvanized steel.4. Internal parts fabricated of galvanized steel.5. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors,

2 blowers.6. Units must have drain line pitched and trapped externally.7. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.8. Fan switch, wall plate not shown.9. Galvanized finished provided as standard.

10. Dimensions are in inches (mm).

Fig. 28 -- 42DE Ceiling Unit with Full Casing and Electric Heat Dimensions

32

1 2

',I[ ', _ ', _" _ IIilII i LF_', ! L2 _ H!II,,11 , , ,,,, , , ,, Iii!1

II ...........i*',',ll!il,,11 ',,_........................-_,...._,' IIiil

o _J '"_1TOP VIEW _ 5

PARTIAL REARVIEW {TYP, BOTH SIDES)

43H_GER :SLO_

FRONT VIEW

m1318 I AIR

(457)

-7

/-8I \ ,_,,.," 7...........

11 J _,-10

RIGHTSIDEVIEW

_9

2"3

I76]

--f

UNIT NOM DIMENSIONS (in. ± 1/8) QTWUNIT UNITAIRFLOW WEIGHT*

SIZE (cfm) A B C D E Blower Motor (Ib)

06 600 31 131/2 14 26 81/2 1 1 150

08 800 36 181/2 20 31 8 1 1 160

10 1000 40 221/2 24 35 8 1 1 170

12 1200 45 271/2 28 40 81/2 2 2 195

14 1400 50 321/2 34 45 8 2 2 205

16 1600 55 371/2 38 50 81/2 2 2 215

18 1800 60 421/2 44 55 8 2 2 230

20 2000 64 461/2 48 59 8 2 2 235


1. Right hand unit shown; left hand unit opposite.2. Coil stub-out connection data available on request.3. Units fabricated of galvanized steel with an Arctic White baked finish.4. Internal parts fabricated of galvanized steel.5. Sizes 06, 08 and 10 have one motor, one blower. Sizes 12 through 20 have 2 motors, 2 blowers.6. Units must have drain line pitched and trapped externally.7. Stamped supply and return grilles are not available.8. Bottom return air is not available.

9. For optional coil connections, view 42DA-203-1 using the Fan Coil Builder.10. Fan switch and wall plate are not shown.11. Dimensions are in inches (mm).

LEGEND

1 --Junction Box2 -- Return Air Grille, Hinged, Bar Type, with Filter

Frame (Anodized Aluminum Only)3 -- Unit Mounting Channel (2), 14-gage; 4 Mounting

Slots, 1/2 in. x 2-in.4 --Auxiliary Drip Lip5 -- Electric Strip Heater Element (optional)6 --Coil Inlet, Copper Sweat Connection7 --Coil Outlet, Copper Sweat Connection8 -- Manual Air Vent9 -- Filter, Throwaway10-- Bottom Access Panel11--Drain, 7/8-in. OD12--Drain Pan Insulated with Styrofoam13--Side Access Panel (2)14-- Supply Air Grille (Double Deflection)

Fig. 29 -- 42DF Exposed Ceiling Unit with Supply and Return Grille and Electric Heat Dimensions

33

CR--CS--D --HR--HS--R --S --

_HFI H_: D CR (gl h,II iII' SGA 'I',! *PIPE !',Ii iI',, OPTION ,',q

3-5/8(9_

LEGEND

Cold Water ReturnCold Water SupplyDrainHot Water ReturnHot Water SupplyReturnSupply

, 2423 -,,_. 17 I-117

22 J

20 -,_ ....

19 .....

1 8 ',_

17 _

16 m

#E

FRONTVIEW

_,_14

"-"--15

TOP VIEW

H

L

1C

1F'H_

1113

lO

963 54

11600) (1372)8

, s(Ta

_.___...-.-4

j.--5J

88(2558){ NOTE 7)

SIDE VIEW

000I All _isersaM

tangent toback plate

ITEM

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

DESCRIPTION

Electrical Knockouts

3-in. Expanded Section

Strip Heater (Optional)

Limit Switch**1-1- (Optional)

1/2-in. Isolation Ball Valves**

Flexible Drain Tube/P-Trap

Coil 1/2-in. OD Copper Tube

Filter, Throwaway, 1-in."

Return Air Opening

Air Vent Manual

Molex Connector for Field-Installed Stat

Control Box

Knockout (For Optional Remote Mounting)

Riser Supply and Return (Copper)

Riser, Drain (Copper)

Drain Pan

Acoustical Bypass Panel

Blower

Motor, 3-Speed PSC, with Quick Connect

Access Panel (Control Box)

Control Opening (Surface Mount Stat)

Duct Collar, 1/2-in. Extension (Typical)

Supply Air Opening(s)

Top Supply Collar 1-in Extension(Optional)

QTY

1

3/5

1

1

2/4

1

1

1

1

1

1

1

2

2/4

1

1

1

1

1

1

1

1/2/3

1/2/3

1

*Drawingprovidedforreferenceonly. Dimensions mayvarywithoptionsordered.NOTES:

1.2.3.4.5.6.

lO9:

11.12,

Units are fabricated of galvanized steel with a 16-gage galvanized fan deck.All risers are insulated with (1/2-in. or 3/4-in. thick) closed cell insulation.Thermostats shipped loose for field connection.Risers are piped to coil with valves as specified.Blower, motor valves coil, and filter are accessible through the return air opening.Unit and control box are insulated.Riser length = floor to floor +2 in., maximum riser length = 119 inches.Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.Expansion loops in hot water heating circuits as required.A 9-in. x 21/4-in. slot is provided in the inside back panel for coil connection penetration to permit expansionand contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.Drawing is pictorial (see unit arrangements for actual supply and return air orientation).All dimensions are in inches.

NOMUNIT AIRFLOW Single Supp_SIZE

(cfm) A B

03 300 14 8

04 400 14 12

06 600 18 10

08 800 18 12

10 1000 -- --

12 1200 -- --

DIMENSIONS (in.) UNITDouble Supp_ Top Supp_ WEIGHTt

E G H I (Ib)A B C D

14 6 14 10 17 11_ 11_ 14 180

14 6 14 10 17 11_ 11_ 14 225

18 6 16 12 20 1 2 18 240

18 6 16 12 20 1 2 18 260

22 8 18 16 24 1 3 22 280

22 8 18 16 24 1 3 22 305

1-Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

**Factory-Installed.1-1-Field-Installed.

Fig. 30 -- 42SG Furred-In Stack Dimensions

34

3(76__ _I L_3-5!8D2)

HIHR H_; D C_ C_; In lqI SHA iI I

I I II

OPTIONI IL r ....... 3 J

19"

18 ...........

1F

JLEGEND

CR i Cold Water ReturnCS -- Cold Water Supply

_R -- DrainHot Water ReturnHS -- Hot Water SupplyR -- ReturnS -- Supply

[3[3[3

-Hflqflflflflfl4"H44flqq444-H-H:-H-H-HH+FFFFFH

_ +H-I-H+_ 3__,,13

,, _ _i_14

i i

i

FRONT VIEW

TOP Vl EW

tS(127)

lO

(NOTE 7)

SIDE VIEW

ITEM DESCRIPTION

1 Full Riser Chase

2 Electrical Knockouts

3 3-in• Expansion Section

4 Strip Heater (Optional)

5 Limit Switch "1-1-(Optional)

6 1/2-in• Isolation Ball Valves *_

7 Flexible Drain Tube/P-Trap

8 Drain Pan

9 Coil 1/2-in• OD Tube

10 Filter Throwaway, 1-in. *_

11 Air Vent, Manual

12 Control Box

13 Cabinet Camlod ®Fasteners

14 3-Speed Switch (Optional)

15 Electrical Access Panel

16 Riser, Supply and Return (Copper)

17 Riser, Drain (Copper)

18 Return Air Panel

19 Motor 3-Speed, PSC

20 Blower

21 Thermostat (Optional)

22 Hinged Control Access Door

23 Double Deflection Steel Core Grille Assembly


OTY

1

1

3/5

1

1

2/4

1

1

1

1

1

1

2

1

1

2/4

1

1

1

1

1

1

1

*Drawing provided for reference only. Dimensions may vary with options ordered.NOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck, painted with Arctic White.2. Risers are piped to coil with valves as specified•3• Blower, motor valves coil, and filter are accessible through the return air opening.4• Unit and control box are insulated•

• Riser length = floor to floor +2 in., maximum riser length = 119 inches•• Maximum riser size is 21/2-in• diameter• If larger sizes are required, please consult the factory.

• Expansion loops in hot water heating circuits as required.• A 9-in• x 21/4-in• slot is provided in the inside back panel for coil connection penetration to permit expansion andcontraction of risers• Care must be taken to position the risers so that coil connection is at center of slot•

9• Drawing is pictorial (see unit arrangements for actual supply and return air orientation).10. 42SHA available in front return only.11. All dimensions are in inches.

NOM DIMENSIONS (in.)UNIT AIRFLOW Single Supply Double SupplySIZE C D E F G

(cfm) A B A B

03 300 14 8 14 6 17 22318 21/2 221/8 143/4

04 400 14 12 14 8 17 223/8 21/2 221/8 143/4

06 600 14 12 14 8 20 253/8 21/2 265/8 173/4

08 800 14 16 14 10 20 253/8 21/2 265/8 173/4

10 1000 18 16 14 12 24 293/8 21/2 311/8 173/4

12 1200 18 16 14 12 24 293/8 21/2 311/8 173/4

1-Unit weights are based on dry coils and minimum rows. Weights exclude packaging valves and other components

UNITWEIGHT1"

(Ib)

202

247

262

286

311

336

Fig. 31 -- 42SH Cabinet Dimensions

35

- ........ -_-- :-= F- 3-s.¢8(92)*

uT. il / ! t v_Jr _..........

OPTIONL"I_ ',[/ '_

-5/_(92}

D

S

SJB

o 1

LEGEND

CR-- Cold Water ReturnCSi Cold Water SupplyD-- DrainHR-- Hot Water ReturnHSi Hot Water SupplyR i ReturnS i Supply

i76)

26\25......\ [-1N N

24 /

22_

20_ @

19 "*""

18---

E--

F_ONT VIEW

-"_ 16

11

(1610

,3

_- 3 (76)

r-_- :

ii

4 / ;7',I,¢,I _ , y

T

SLIDEVIEW

ITEM

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

25

26

DESCRIPTION


Gypsum Board 5/8-in. Type "X"

3-in. Expanded Section

Strip Heater**(Optional)

Limit Switch**1-1 - (Optional)

V2-in. Isolation Ball Valves**

Thermafiber Insulation


Coil V2-in. OD Copper Tube

Filter, Throwaway, 1-in/*

Return Air Opening

Air Vent Manual


Molex Connector for Field Installed Stat

Control Box



Drain Pan

Return Air Blocko# Panel (Optional)

Blower

Motor 3-Speed, PSC with Quick Connect


Control Opening (Surface Mount Stat)

Duct Collar, V2-in. Extension (Typical)


Top Supply Duct Collar 1-in. Extension(Optional)

OTY

6

1

3/5

2

2

4/8

2

2

2

2

2

2

2

2

2

1

2/4

2

1

2

2

2

2

1/2/3

1/2/3

1


1• Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck•2• All risers are insulated with closed cell insulation.3• Thermostats shipped loose for field connection.4• Risers are piped to coil with valves as specified•5• Blower, motor valves coil, and filter are accessible through the return air opening•6• Unit and control box are insulated.

• Riser length = floor to floor +2 in. , maximum riser length = 119 inches•• Maximum riser size is 2V2-in• diameter• If larger sizes are required, please consult the factory.9• Expansion loops in hot water heating circuits as required.

10. A 9-in. x 2V4-in• slot is provided in the inside back panel for coil connection penetration to permit expansionand contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.

11• Drawing is pictorial (see unit arrangements for actual supply and return air orientation).12• All dimensions are in inches.

NOM DIMENSIONS (in.)UNIT AIRFLOW Single Supply Double Supply Top SupplySIZE E G H I J

(cfm) A B A B C D

03 300 14 8 14 6 14 10 17 11_ 11_ 14 395_

04 400 14 12 14 6 14 10 17 1_ 1_ 14 395_

06 600 18 10 18 6 16 12 20 1 2 18 455_

08 800 18 12 18 6 16 12 20 1 2 18 455_

10 1000 -- -- 22 8 18 16 24 1 3 22 535_

12 1200 -- -- 22 8 18 16 24 1 3 22 535_

?Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components

**Factory-Installed•1-1-Field-Installed.

Fig. 32 -- 42SJ Back-to-Back Furred-In Stack Dimensions

UNITWEIGHTI"

(Ib)

36O

45O

48O

52O

56O

610

36

LEGEND

CR i Cold Water ReturnCS i Cold Water SupplyD -- DrainHRi Hot Water ReturnHSi Hot Water SupplyR -- ReturnS -- Supply

_:_ 3-518199

3-S/8(92) ....

i i i

'I eO-M I'Ii _J _...A ii

i! 4-PIPE !i

_ OPTION ;

24/

23.... Allfl _/

22 j

21-...

17 _'_ _ #,_=_%

_: H Hi

16--

U

II kl I1./"

FRONT VIEW

TOP VIEW

HL

1C

1FH

,__ s(761

1-_/4P2i

G_

i

I63 54

1

I _i_ ,,¸

.... / ......

k k ._ iik "_ II

....................................._jj;-

E

2

IJ

8812:5 581

339199_)

S{127)

SIDE VIEW

_y_ 3

j4

_j_ 5

(NOTE 7)

©©ot Allri_rsate f

tange_t to,ba_k plate

ITEM

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

DESCRIPTION


3-in Expanded Section

Strip Heater** (Optional)

Limit Switch**1-1- (Optional)

1/2-in• Isolation Ball Valves**


Coil 1/2-in. OD Copper Tube

Filter, Throwaway, 1-in.**

Return Air Opening

Air Vent Manual


Molex Connector for Field-Installed Thermo-stat

Control Box



Drain Pan

Acoustical Bypass Panel

Blower

Motor 3-Speed, PSC with Quick Connect


Control Opening (Surface Mount Thermostat)

Duct Collar, 1/2-in. Extension (Typical)


Top Supply Duct Collar, 1-in. Extension(Optional)

OTY

1

3/5

1

1

2/4

1

1

1

1

1

2

1

1

2/4

1

1

1

1

1

1

1

1/2/3

1/2/3

1


1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck•2. All risers are insulated with closed cell insulation.3• Thermostats shipped loose for field connection.4• Risers are piped to coil with valves as specified•5• Blower, motor valves coil, and filter are accessible through the return air opening•6• Unit and control box are insulated.

• Riser length = floor to floor +2 in•, maximum riser length = 119 inches•• Maximum riser size is 21/2-in• diameter• If larger sizes are required, please consult the factory.

9• Expansion loops in hot water heating circuits as required.10. A 9-in. x 21/4-in. slot is provided in the inside back panel for coil connection penetration to permit expansion

and contraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.11• Drawing is pictorial (see unit arrangements for actual supply and return air orientation).12. All dimensions are in inches•

NOV DIMENSIONS (in.)UNITSIZE AIRFLOW Single Supply Double Supply Top Supply

E G H(cfm) A B A B C D

03 300 14 8 14 6 14 10 17 11/2 11/2 14

04 400 14 12 14 6 14 10 17 11/2 11/2 14

06 600 18 10 18 6 16 12 20 1 2 18

08 800 18 12 18 6 16 12 20 1 2 18

10 1000 -- -- 22 8 18 16 24 1 3 22

12 1200 -- -- 22 8 18 16 24 1 3 22

UNITWEIGHTt

I (Ib)

180

225

240

260

280

3O5

1-Unit weights are based on dry coils and minimum rows Weights exclude packaging, valves, and other components.

**Factory-Installed•1-1-Field-Installed.

Fig. 33 -- 42SGM Furred-In Master Stack Dimensions

37

_.U.__LL_ _ _ .U._.I.L_C5 C_ D HS HR

SGS_PIPE

OPTIONt

TOP VIEW

H

L,

If°C

loLJ

N D -_1-1/4 (32)

(76)

20 _._._

18 .....

17 ..... "

16 _

LEGEND

CR-- Cold Water ReturnCS -- Cold Water SupplyD -- DrainHR-- Hot Water ReturnI-IS -- Hot Water SupplyR -- ReturnS -- Supply

15--

ITEM DESCRIPTION

1 Electrical Knockouts

2 Strip Heater** (Optional)

3 Limit Switch**1-1- (Optional)

4 1/2-in. Isolation Ball Valves**

5 Coil Stub Outs

6 Shipping Brace

7 Flexible Drain Tube/P-Trap

8 Coil 1/2-in. OD Copper Tube

9 Filter, Throwaway, 1-in.**

10 Return Air Opening

11 Air Vent, Manual

12 Knockout (For Optional Remote Mounting)

13 Molex Connector for Field-Installed Stat

14 Control Box

15 Drain Pan

16 Return Air Blockoff Panel (Optional)

17 Blower

18 Motor, 3-Speed, PSC, with Quick Connect

19 Access Panel (Control Box)

Control Opening (Surface Mount Thermo-20 stat)

21 Duct Collar, 1/2-in. Extension (Typical)

22 Supply Air Opening(s)

Top Supply Duct Collar 1-in. Extension23 (Optional)


23

/

E

FRONT VIEW

QTY

1 1.

1 2,3.

1 4.

2/4 5.6.

2/4 7.

2/4 9:1 10.

1 11.1 12.

1

1

2

1

1

1

1

1

1

1

1

1/2/3

1/2/3

1

11

_D_

SIDEVIEW


Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.All risers are insulated with closed cell insulation.Thermostats shipped loose for field connection.Risers are piped to coil with valves as specified.Blower, motor, valves, coil, and filter are accessible through the return air opening.Unit and control box are insulated.Riser length = floor to floor +2 in., maximum riser length = 119 inches.Maximum riser size is 21/2-in. diameter. If larger sizes are required, please consult the factory.Expansion loops in hot water heating circuits as required.A 9-in. x 21/4-in. slot is provided in the inside back panel for coil connection penetration to permit expansion andcontraction of risers. Care must be taken to position the risers so that coil connection is at center of slot.Drawing is pictorial (see unit arrangements for actual supply and return air orientation).All dimensions are in inches.

UNIT NOMSIZE AIRFLOW Single Supply

(cfm) A B

03 300 14 8

04 400 14 12

06 600 18 10

08 800 18 12

10 1000 -- --

12 1200 -- --

DIMENSIONS (in.) UNIT

Double Supply Top Supply WEIGHT1"E G R I (Ib)

A B C D

14 6 14 10 17 11/2 11/2 14 162

14 6 14 10 17 11/2 11/2 14 203

18 6 16 12 20 1 2 18 216

18 6 16 12 20 1 2 18 234

22 8 18 16 24 1 3 22 252

22 8 18 16 24 1 3 22 275

1-Unit weights are based on dry coils and minimum rows. Weights exclude packaging, valves, and other components.

Fig. 34 -- 42SGS Furred-In Slave Stack Dimensions

38

item

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

Description

Float Switch (Optional)

Drain Pan


Drain Knockout (3 Sides)

Blower

Riser Knockouts (3 Sides)

1/2 in. Flare Adaptor (SWT x 37.5)

Coil, 1/2 in. OD Copper Tube

in. Throwaway Filter(Factory Installed)

Manual Air Vent

Return Air Opening

Knockout (For Optional ThermostalRemote Mounting)

Molex Connector for Field-InstalledThermostat

Control Box

Duct Collar Extension(1/2 in. Side, 1 in. Top)

Outside Air Knockout(On Each Side Panel)

Electrical KnockoutsNear Each Side)

Service Switch (Optional)

Motor, 3-Speed, PSC, with QuickConnect

Access Panel for Motor and BlowerAssembly


Control Opening KnockoutSurface Mount Thermostat)

Supply Air Openings(4 Sides and Top, Stitch Cut)

LEGEND

CR -- Cold Water ReturnCS -- Cold Water SupplyD -- DrainHR -- Hot Water ReturnHS -- Hot Water SupplyPSC -- Permanent Split CapacitorSWT-- Sweat

Oty

1

1

1

1 eachside

1

2/4

2/4

1

1

1

1

3

1

1

1/2/3

1

1

1

1

1

1

1

1/2/3

3-sJ 1-1J4(92)__,,,,Z,h,_"_ _ ] (32)

i iT

HdC----C----II--H

22 --_

2 0 -_

TOP VI EW_A_

L__"m

_-_ r_ ,-_r _

FRONTVIEWNOTES:

1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.2. Thermostats shipped loose for field connection.3. Blower, motor, valves, coil, and filter are accessible through the return air opening.4. Unit and control box are insulated with 1/2-in. (13 mm) coated fiberglass insulation.

DF

m

I 18

19

631600)

5. All risers will ship separately from units. Riser dimensions are measured from centerline of knockout.6. Drain knockouts on three sides of cabinet.7. Flex hoses ship with unit.8. Thread fittings on both ends of flex hoses must be field tightened and leak tested.9. Return air panel not shown.

10. All dimensions are in inches (mm).

15 _

13 ...........

12

11

(203)

-f

Z I4

DETAIL SIDE VIEW

iiiiIiii

£-!_-J........._,,.......,-T--q

,"'I,"'I_,_I III ',III-

,,-,,,,,,_,=._'-,',,',,

22>

88

(22359_ 5

39

(991)

#(127) I

[_E= _ '

SIDEVIEW

UNITUNIT WEIGHT*SIZE (Ib)

03 180

04 225

06 240

08 260

10 280

12 305

DIMENSIONS (in.)

Side Supply Top Supply

B Size C D Size E

14 12 14 x 12 14 10 14 x 10 17 3 11/2 14

18 12 18 x 12 16 12 16 x 12 20 1 2 18

22 16 22 x 16 18 16 18 x 16 24 1 3 22

FILTER SIZE(in.)

121/2 x 241/4 x 1

161/4 x 263/4 x 1

201/2 x 291/4 x 1


Fig. 35 -- 42SU Universal Furred-In Stack Dimensions

39

3-5/8 I I I 3-5/8I +'-.-I l"-" (92) 1-1/4

(92)-'--)..<-_K.J.._iHR'tHStlD,_C_U_CS'l" "1"_" "l" _" [-- (32)

[I ITOP VIEW

25\

]B

L24

22

_A_ _F

20

- 21

63(1600)

_E_

FRONTVIEWLEGEND

CR -- Gold Water Return

CS -- Gold Water SupplyD -- DrainHR -- Hot Water Return

HS -- Hot Water SupplyPSC -- Permanent Split CapacitorSWT- Sweat

17

51(1295)

11

10

1 _"__L_'----_/ 23

i-i/4 l I,'-1"_ ',%_jl I

4

88

(2235_) 7

/I j8

(991)I

DETAIL SIDE VIEW

SIDEVIEW

NOTES:1. Units are fabricated of 18-gage galvanized steel with a 16-gage galvanized fan deck.2. Thermostats shipped loose for field connection.3. Blower, motor, valves, coil, and filter are accessible through the return air opening.4. Unit and control box are insulated with 1/2-in. (13 mm) coated fiberglass insulation.5. All risers will ship separately from units. Riser dimensions are measured from centerline of

knockout.6. Drain knockouts on three sides of cabinet.7. Flex hoses ship with unit.8. Thread fittings on both ends of flex hoses must be field tightened and leak tested.9. Return air panel not shown.

10. All dimensions are in inches (mm).

Item

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

Description

Float Switch (Optional)

Drain Pan


Drain Knockout (3 Sides)

Limit Switch (Factory Installed)

Strip Heater

Blower

Riser Knockouts (3 Sides)

1/2 in. Flare Adaptor (SWT x 37.5)

Coil, 1/2 in. OD Copper Tube

in. Throwaway Filter(Factory Installed)

Manual Air Vent

Return Air Opening

Knockout (For OptionalThermostat Remote Mounting)

Molex Connector forField-Installed Thermostat

Control Box

Duct Collar Extension(1/2 in. Side, 1 in. Top)

Outside Air KnockoutOn Each Side Panel)

Electrical KnockoutsNear Each Side)

Service Switch (Optional)

Motor, 3-Speed, PSC,with Quick Connect

Access Panel for Motor and BlowelAssembly


Control Opening KnockoutSurface Mount Thermostat)

Supply Air Openings(4 Sides and Top, Stitch Cut)

UNIT UNITWEIGHT*

SIZE (Ib)

03 182

04 227

06 242

08 262

10 282

12 307

DIMENSIONS (in.)

Side Supply Top Supply

B Size C D Size E

14 12 14 x 12 14 10 14 x 10 17 3 11/2 14

18 12 18 x 12 16 12 16 x 12 20 1 2 18

22 16 22 x 16 18 16 18 x 16 24 1 3 22


Fig. 36 -- 42SU Universal Furred-In Stack with Heater Dimensions

Oty

1

1

1

1 eachside

1

1

1

2/4

2/4

1

1

1

1

3

1

1

1/2/3

1

1

1

1

1

1

1

1/2/3

FILTER SIZE(in.)

121_ x 24 l& x l

161&x 263&x 1

201_x 291&x 1

40

3 3 3 3(76)_._lJr--(76) (76)--r_Jr _ (76)

3 5/8 3-518,Q�,-_.._,r._!. [--(2) 1-1/4 .[ .[.[ 1-1/4_J _ .F_,_._ _ - _{o_ '

!_ 1"1" 7_1_ I (32) _,"D,"ic9 ___[ (32)

111 IF................ /F--[111II I(280) If il I(280)L ' 'f ELECTRICAL ................. J._____t

I_e , J KNOCKOUTS ...._,, _IIL e_ L___

-736- IL 24 3 II 24 /( )_ (610)_ (76)_11_ (610)------I

4-PIPE 2-PIPE

RISER--KNOCKOUTS

28(711)

LEGEND

CR -- Cold Water ReturnCS -- Cold Water SupplyD -- DrainHR -- Hot Water ReturnHS -- Hot Water SupplyPSC -- Permanent Split CapacitorSWT- Sweat

__3O(762)

SERVICEACCESS PANEL

39(991)

-- MOTOR/BLOWER,3 SPEED, PSC,HIGH STATIC CONTROL BOX

66

(1676)

_ SLVVZRX 3715

ADAPTER

DRAIN PAN

(610)_ (127)

NOTES:1. Unit measurements on drawings are shown in inches (millimeters).2. Units are fabricated of galvanized steel with a 16 gage galvanized fan deck.3. Blower, motor, valves, coil, and filter are accessible through the return air opening.4. Unit and control box are insulated with 1/2-in. (13 mm) coated fiberglass insulation.5. Maximum riser size is 2 1/2-in. (64 mm) diameter. If larger sizes are required, please consult the factory.6. This drawing is pictorial. (See unit arrangements for actual supply and return air orientation.)7. Riser length = [floor to floor + 2-in. (51 mm)]. Maximum riser length is 119-in. (3023 mm).8. Unit shipping weight is approximately 390 Ib (176 kg).

Fig. 37 -- 42SM Mega Furred-In Stack Dimensions

41

PANELDIMENSIONS(in.)PANEL NO. UNIT UNIT SIZE

03, 0442SG,SJ, 06, 08

SU10, 12

42SM 14,16,20

03, 04

42SG,SJ 06, 08

10, 12

03, 04

42SG,SJ 06, 08

10, 12

A

15.5

19.5

23.5

29.5

15.5

19.5

23.5

15.2

19.2

23.2

NOTE: Dimensions in inches.

55.5

PANEL NO. 1

61.1

_,_A_

® ®

: i

PANELN©.2

,_A _

55.3

PANEL NO. 3

I* A *1® ®

61.1

m i

m

m

m im

i !m

i !

PANEL NO. 2 WITHOUT DOOR

52.5

® ®

PANEL NO. 1 FOR 42SU

60.5

_------- A ------------_

PANEL NO. 1 FOR 42SM

Fig. 38 -- Return-Air Wall Panels for Furred-In Units -- Panels with No Frame

42

PANELANDFRAMEDIMENSIONS(in.)PANEL NO. UNIT UNIT SIZE

03, 044 42SG,SJ,SU 06, 08

10, 12

03, 045 42SG,SJ 06, 08

10, 12

A

15.1

19.123.1

15.119.1

23.1

NOTE: Dimensions in inches.

54.7

,_1------- A ----------_

® ®

PANELNO. 4

®

A

®

60.4

,____ i

PANEL NO. 5 WITH CONTROL DOOR

60.4

® ®

PANEL NO. 5 WITHOUT DOOR

51.7

-- A ------_

® ®

d

3

d

3

3

PANEL NO. 4 FOR 42SU

Fig. 39 -- Return-Air Wall Panels for Furred-In Units -- Panels with Frame

INSTALLATION

Step 1 -- Place Units in Position42C UNITS

1. Select the unit location. Allow adequate space for flee aircirculation, service clearances, piping and electricalconnections, and any necessary ductwork. For specificunit dimensions, refer to Fig. 1-16. Allow clearances ac-cording to local and national electric codes.

2. Make sure ceiling is able to support the weight of the unit.See Table 1 for nominal unit weight.

3. Ensure bottom panel has been removed from 42CG, CKunits with mounting holes. When unit is lifted, access tothe 0.375-in. mounting holes is through the bottom of the

4.

5.

unit. Hanger rods and fasteners and other required hard-ware must be field-supplied.

Move unit into position. Ensure unit is level or pitchedtowards dram to ensure proper drainage and operation.Pitch of suspended unit can change after coil is filled;recheck after filling coil.

Mounting umt:

a. Use rods and fasteners to suspend the unit at thefactory-provided mounting holes with rubbergrommets on the top of the unit on 42CG, CKunits. Reach into unit and attach unit to the ceilingusing the 0.375-in. mounting holes (4) in toppanel; do not use any other locations.

b. Use rods and fasteners to suspend the unit at thefactory-provided 0.375-in. hanger slots (4) with

43

rubbergrolmnetsonthetopof theunit on the42CA,CE,andCFunits.NOTE:ThefourmountingholesandhangerslotswithrubbergrolrnnetsareNOTforbalancingunit.

6. 42CAand42CFunitswithoutplenumsand42CEandCFwithbottominletmaybeinstalledin noncombustibleareasonly.

NOTE:Theinstallationof horizontalconcealedunitsmustmeettherequirementsoftheNationalFireProtectionAssocia-tion(NFPA)Standard90Aor90Bconcerningtheuseofcon-cealedceilingspaceasreturn-airplenums.42VUNITS

1. Selecttheunitlocation.Allowadequatespaceforfleeaircirculation,serviceclearances,pipingandelectricalconnections,andanynecessaryductwork.Forspecificunitdhnensions,refertoFig.17-24.Allowclearancesac-cordingtolocalandnationalelectriccodes.

2. Makesurethefloorisabletosupporttheweightoftheunit.SeeTable2fornominalunitweight.

3. Ensurewall behindunit is smoothandplumb;ifnecessary,installfumngstripsonwallswithirregularsurfacesormullions.Fumngstripsmustbepositionedbehindmountingholesinunit(42VA,VB,VFunits).Fasteners,fumngstrips,andotherseals(ifrequired)mustbefield-supplied.

4. Removeallwallandfloormoldingsfrombehindtheunit.5. Ensure42VAtoppanel(underwindowapplication)and

42VB,VF frontpanelhasbeenremovedfromunittoobtainaccesstothefour0.75-in.mountingholes.Hangerrodsandfastenersandotherrequiredhardwaremustbefield-supplied.

6. Moveunitintoposition.Ensureunitis levelorpitchedtowardsdrainto ensureproperdrainageandoperation.Pitchof suspendedunitcanchangeaftercoilis filled;recheckafterfillingcoil.

7. Adjust42VA,VB,VC,VE,VFunitslevelinglegssounitis level.Unitmustbelevelforproperoperationandcondensatedrainage.

8. Mountingunit:a. Userodsandfastenersto suspendtheunitatthe

factory-providedmountingholeswith rubbergrommetsonthetopoftheuniton42VA,VB,VFunits.Reachintounitandattachunitto thewallusingthe0.375-in.mountingholes(4) in toppanel;donotuseanyotherlocations.Thefourmountingholesandhangerslotswith rubbergrommetsareNOTforbalancingunit.

b. On42VGunitensureunitisplacedsnugwithinthewall.

c. On42VC,VEunitensureunitis flushedagainstthewall.

NOTE:Foranyunitwithoutareturn-airductconnection,applicableinstallationcodesmaylimitunitto installationmsinglestoryresidenceonly.42DUNITS

1. Selecttheunitlocation.Allowadequatespaceforfleeaircirculation,serviceclearances,pipingandelectricalcon-nections,andanynecessaryductwork.Forspecificunitdimensions,refertothesubmittaldrawings.Allowclear-ancesaccordingtothelocalandnationalelectricalcodes.

2. Besureeithertheceiling(42DA,DC,DE,andDFunits)orfloor(42DDunit)isabletosupporttheweightoftheunit.SeeTable3fornominalunitweight.

3. Moveunitintoposition.Ensureunitis levelorpitchedtowardsdrainto ensureproperdrainageandoperation.

SeeFig.25-29.Pitchofsuspendedunitcanchangeaftercoilisfilled;recheckafterfillingcoil.

4. Mountingunitstotheceiling:a. Whenunitislifted,accesstothe0.375-in.mount-

ingholesis onthetoppanelof theunit.Hangerrodsandfastenersandotherrequiredhardwaremustbefield-supplied.

b. Userodsandfastenerstosuspendtheunitatthefactory-providedmountingholeswith rubbergrommetsonthetopoftheunit.Attachunittotheceilingusingthe0.375-inmountingholes(4) intoppanel;donotuseanyotherlocations.

c. Usetherodsandfastenerstosuspendtheunitatthefactory-provided0.375-in.hangerslots(4)withtherubbergrommetsonthetopoftheunitonthe42DA,DC,DE,andDFunits.NOTE:ThefourmountingholesandhangerslotswithrubbergrolmnetsareNOTforbalancingunit.

d. Models42DAand42DCwithbottominletmaybeinstalledinnoncombustiblereturnspacesonly.

5. Mountingunitsonthefloor:a. Ensurewallbehindtheunitissmoothandplumb;

if necessary,installfurringstripsonwallswithirregularsurfacesormullions.Fumngstripsmustbepositionedbehindmountingholeson42DDunits.Fasteners,furringstrips,andotherseals(ifrequired)mustbefield-supplied.

b. If theunithaslevelinglegs,adjustthemcorrectlytoleveltheunit.

6. Protect units froln damage caused by jobsite debris. Donot allow foreign material to fall in unit drain pan.Prevent dust and debris from being deposited on motor orfan wheels.

42S UNITS -- A factory tag is on top of each unit. Tag statesriser tier number, toot room number if furnished and supply-air arrangement. Check unit for any other labels that apply toinstallation. Units should not be installed at locations other

than that marked on the unit identification tag. If no specificdetail is shown on tag for unit location then determine configu-ration for the Universal unit based on information within this

manual. Should any questions arise regarding unit configura-tion, contact the sales representative or the factory BEFOREproceeding. Remove unit from pallet and take directly toassigned space for installation. While all equipment isdesigned and fabricated with sturdy materials and may presenta rugged appearance, great care must be taken to assure that noforce or pressure be applied to the coil, risers or piping duringhandling. Never use the riser to lift the unit. To maintain thestraight and square cabinet aligmnent, avoid lifting or support-ing the cabinet only at the top and bottom.

While the manufacturer does not become involved m the

design and selection of support methods and components, itshould be noted that unacceptable system operating character-istics and/or performance may result from improper or inade-quate unit structural support. Due to variations m building con-struction, floor plans, and unit configurations, each installationis different. The actual step-by-step method of installation mayvary from unit to unit. However, the risers should be moved aslittle as possible to avoid damage to the unit and internalcomponents.

42SG, SH and SJ Units

1. Begin on lowest floor and progress upward, floor byfloor, to top.

2. Examine drain line (Fig. 35 and 36). Be sure both endsare in place and that it forms a trap. Avoid pinching dramline.

44

3. Tip unit over riser hole in building floor. As unit isrighted, align riser with unit below.

NOTE: The unit must be lowered into the space takingcare to properly align the risers to engage the riser swagedsection on the unit below. The riser should never be bent

or pushed together to be passed through the floor slot andshould never be lifted up or pulled down to meet the riseron the floor below or above.

4. Install isolator pads beneath the four corners of unit ifapplicable.

5. Before anchoring the equipment in place, the unit must beleveled and the cabinet must be squared and brought intoline with any adjacent or included walls. The unit may beanchored in place by bolting directly through the unitfloor or attaching to the cabinet in some location that willnot interfere with drywall or other items such as the sup-ply grille, thermostat, or return access panel. When at-taching to the unit cabinet, care must be taken to not pen-etrate the cabinet in locations that may damage internalcomponents or wiring. The mounting technique is a mat-ter of choice; however, the unit should always be an-chored securely to prevent movement during constructionand riser expansion and contraction. On certain units,shipping screws or braces must be removed after the unitis installed. Be sure to check all tags on the unit to deter-mine which, if any, of these devices need to be removed.

6. If installing a 42SJ unit, follow Steps a-h. For 42SG and42SH units, continue to Step 7.NOTE: The 42SJ back-to-back fan coils have been de-

signed to serve two separate rooms. These products areclassified by Underwriters Laboratories Inc. for use inpenetration firestop systems, control number 27WL whenordered with 1-hr rated chase. See UL Fire Resistance

Directory for more information. Figure 40 shows the42SJ unit with standard risers and with Siamese risers.

a. Lay out the control lines for the drywall track andstuds in the floor and ceiling (see Fig. 41).

42SJA

42SJB

42SJA f

42SJB

Fig. 40 -- 42SJUnit with Standard and Siamese Risers

E 1

CHASESIDEPANEL

\\

DRYWALLTRACK ANDSTUDCONTROLLINES

D D ,NSTALLWALLSTUDINTOPOCKETFORMEDBYCHASE SIDE

L!i"i _ PANEL

INSTALL STUDS FROM TOP OFUNIT TO CEILING (4 CORNERS)

Fig. 41 -- 42SJ Wall Board Installation

b.

NOTE: Tracking may be installed now or after theunit is set.

Position the 42SJ fan coil assembly between tworooms with the unit drywall separation spottedover the wall control lines.

c. If not already installed, install the floor and ceilingtracks up to and over the 42SJ fan coil unit.

d. Position the vertical studs and fasten into each of

the stud pockets formed into the chase side panels(see Fig. 41).

NOTE: The studs may be mechanically fastenedto the 42SJ fan coil. Care should be taken, how-ever, not to penetrate the supply or return waterrisers or internal piping. Given the levelness of thefloor and/or the fan coil assembly, some shimmingmay be necessary.

e. Assemble the specified wall construction up toand over the top of the fan coil unit (see Fig. 42).

L IINSTALL WALLGYPSUM

WALL STUDS BOARD

(TO WALL ANDOVER TOP OFUNIT)

ldHHHHHHHHH _ ,'_ _ ............... ;_ _,_Z _HHHH_

D [qJ ,NSTALL

GYPSUMINSTALL BOARD TOGYPSUM UNIT SIDES

BOARD TO [3 NFACE OF =

UNIT WITHCUT OUTS

FOR SUPPLY, ]RETURN AND

THERMOSTAT --

Fig. 42 -- 42SJ Unit Installation

f. With the fire-wall separation being complete, thedrywall skin on the surface of the individual fancoils can be applied. Drywall can be applieddirectly to the surface, oc if necessary, studdingmay be installed on the corners for vertical control(see Fig. 42).

g. For ease of installation of the access panel, applydrywall on the return air side directly to the sur-face of the unit (see Fig. 42). When applying thewall board directly to the unit cabinet, it may benecessary to shim the wall board in some areas toachieve the desired finished wall surface.

h. After all drywalling and painting is complete,install thermostats, supply air grilles and return airpanels.

7. Attach unit risers:

Toxic residues and loose particles resulting froln lnanufac-raring and field piping techniques such as joint compounds,soldering flux, and metal shavings may be present in theunit and the piping system. Special consideration must begiven to system cleanliness when connecting to solar,domestic or potable water systems. Failure to heed thiswarning could result in equipment damage.

45

NOTE: Submittals and product literature detailing unitoperation, controls, and connections should be thorough-ly reviewed BEFORE beginning the connection and test-ing of risers and piping. The supply and return connec-tions are marked on the coil stub-outs and the valve pack-age with an"S" meaning supply or inlet and "R" meaningreturn or outlet indicating flow direction to and from thecoil. Blue letters mark the chilled water connections andred letters mark the hot water connections.

a. Each riser has a 3-in. swaged portion at top andsufficient extension at bottom for an inserted

length of approximately 2-in. This unit-to-unitjoint is NOT intended for full bottoming in thejoint, but allows for variations in floor-to-floordimensions and for correct riser positioning.

If job requires that unit risers be supplementedwith between-the-floor extensions pieces may befield-supplied or factory-supplied. If factory-supplied, insulation is also provided.

b. Level unit to ensure proper coil operation andcondensate drainage. Proper riser installation andvertical positioning in the unit provides for a unitpiping run-out to the service valves which are cen-tered in the access slots and level or sloping downslightly away from the riser. This prevents con-densation from running back to the riser and pos-sible damage from dripping at the bottom of ariser column. Each job has specific requirements,and satisfying those requirements is the responsi-bility of the installer. After units are positionedand riser centered in pipe chase, make unit plumbin two directions, using unit frame as a reference.

c. Anchor unit to building. Use bolts or lag screwsthrough holes provided in unit frame.

d. After all units in a stack are anchored, make unit-to-unit riser joints. First, center each coil-to-riserline within the expansion slot in the unit backpanel. Each riser joint must be in verticalaligmnent with at least 1-in. penetration into theswaged joint. This condition is met if floor-to-floor dimension is as specified and coil-to-riserlines are properly centered. Wide variations infloor-to-floor dimensions may necessitate cuttingoff or extending individual risers. Such modifica-tions are the full responsibility of the installingcontractor.

e. Before making the riser joints, the riser insulationmust be pulled back away from the joint and pro-tected from heat during the brazing process. Theriser joint filler material must be selected to with-stand the total operating pressure (both static andpumping head) to which the system will be sub-jected. Low temperature lead alloy solders such as"50/50" and "60/40" are normally not suitable.

IMPORTANT: Chilled water and hot water risers shouldnever be piped to dram down into the condensate riser.Extensive water damage can occur due to dram over-flow. Drain chilled and hot water risers to a remote loca-tion away from the unit such as sink, room and floordrams.

8. Anchor risers as required:

a. Do not fasten risers rigidly within each unit.Risers must be free to move within pipe chasein response to normal vertical expansion and

b.

contraction. The unit internal piping is designed toaccommodate a total riser vertical movement of

4- 3/4 in., due to thermal expansion and/or contrac-

tion, when positioned properly at the jobsite.

Built-in risers must be anchored at some pointto building structure. Unit design accolmnodatesup to l l/2-in, expansion and contraction in riser

assemblies when positioned properly at the job-site. Risers must be anchored to the building struc-ture to limit expansion and contraction movementto a maximum of 11/2 inches. Riser anchoring and

expansion compensation is not included in the fac-tory-supplied unit and must be field provided.While some special riser features are availablefrom the factory, riser end caps, air vents, and/orflushing loops are normally provided on the job bythe installer.

9. Test the system for leaks after the connections are coin-pleted. When testing with air or some other gas, it mightbe necessary !o tighten stein packing nuts on some valvesto mmntmn air pressure in the riser. Pressure testing riserswith water should be done with the unit service valves

closed to prevent flushing debris into the unit valve pack-ages. This will also allow risers to be drained down aftertesting in the winter to avoid freeze-up problems. In theevent that leaking or defective components are discov-ered, the sales representative must be notified before anyrepairs are attempted. All leaks should be repaired beforeproceeding with the installation.

10. After system integrity has been established, pull the riserinsulation back into place over the joint and glue or sealto prevent sweating and heat loss or gain. Internal chilledwater piping and valves are located over the dram panand need not be insulated.

11. If required, fireproof were necessary. Any fireproofing re-quirements where risers or piping penetrate floors orwalls are the responsibility of the installer. This workshould be done only after all pressure testing is complet-ed. The fireproofing method used must accolr_nodatepipe expansion and contraction and the piping must beprotected from abrasion and chemical attack. The pipe in-sulation also must be maintained to prevent sweating andmust be protected from wear or erosion at the joint be-tween the insulation and the fireproofing material.

42 SU Units -- The unique design of the universal stack fancoil unit allows for field configuration for each unit. Air dis-charge, riser, drain, and outside air knockouts have been strate-gically located on each unit. Risers, shown with unit, are forreference only. All risers are factory fabricated and shippedloose for field installation.

It is important that you identify all of the unit feature loca-tions and which knockouts you intend to use before proceedingwith the installation. See Fig. 45-47. Also, it must be deter-mined whether your application requires a Mating Unit (prima-ry/secondary) and its configuration. Consult your local salesrepresentative or the factory for further details on prhnary/sec-ondary arrangements.

Potential Unit Configurations

Risers: Three Locations -- The pre-installed supply, return,and drain risers (2-pipe or 4-pipe applications) can be orientedon any of three sides of the unit (see Fig. 43).NOTE: Risers can not be installed on the return air side of thecabinet.

46

@@©@@©@©©®

42SU

CABINET

I'RETURN AIR

r®®©©©

HR HS CR 8o o oR = RETURN HR HOT WATER RETURN

D = DRAIN HS HOTWATERSUPPLY

S = SUPPLY D DRAIN

2- or &PIPE CR COLD WATER RETURNCS COLD WATER SUPPLY

Fig. 43 -- 42SU Unit Configuration

Unit orientation is determined based on the location of the

risers m the building. The riser side of the universal stack unitalways determines the rear of the unit. See Fig. 44.

REAR

(RISER SIDE)

LEFT42SU

CABINETRIGHT

FRONT

Fig. 44 -- 42SU Unit Orientation

Return Air: Single Location -- The return air/access panelmay then be oriented on the left, right, or front of the unit.

Supply Air: Five Locations (4 sides and top) includes stitcheddesign for 1/2-in. duct flanges.

Outside Air: Two Locations -- Either side adjacent to thereturn air opening.

NOTE: Outside air opening may be used on a side if risers areconfigured on that same side.

Supply, Return and Drain Riser Installation

1. Three sides of each universal stack unit have four supplyand return riser knockouts along the center and one drainknockout near the lower part of the unit (see Fig. 45).Identify whether your application uses a 2-pipe or 4-pipeconfiguration.

a. Two-pipe configurations typically use the twoinner riser knockouts.

b. Four-pipe configurations will use all four riserknockouts.

2. Locate and mark the riser and dram knockouts that applyto your particular unit application, ensuring proper orien-tation of the return air opening in room.

3. Insert a flat head screw driver into knockout slot shown in

Fig. 46.

4. Pry screw driver back and forth until knockout tabs breakaway from the unit.

5. Discard knockout. Be careful of sharp edges.

6. Use a sharp retractable knife (see Fig. 47) and verticallycut the insulation down the center of the riser and drainknockouts the full length of the knockout.

7. Use adhesive or glue to re-attach insulation that haspulled away from the unit during knockout removalprocess.

SIDEVIEW

RETURN -_AIR

OUTSIDE AIRKNOCKOUT

(2 SIDES ONLY,ADJACENT TO

RETURN AIR

OPENING)

SIDE SUPPLY AIR/ KNOCKOUT

_'_ (1 PERSIDE)

_ PTIONALELECTRICALKNOCKOUTS

OO@@- (4 PER SIDE,EXCEPTONRETURN AIR SIDE)

@ _-iDRA,NKNOCKOUT(1 PER SIDE,_, _ EXCEPTON

/ RETURN AIR SIDE)

TOP VIEW

O O ] _- :,5_--

ELECTRICAL _ II_

Fig. 45 -- Locate 42SU Unit Knockouts

TOP SUPPLYAIR KNOCKOUT

47

DRAIN(NOCKO!

g

Fig. 46 -- Remove 42SU Unit Knockouts

specific requirements and satisfying those requirements is theresponsibility of the installer.

OUTER UNIT INSULATION

RISER STUBOUTINSULATION

BALLVALVE

RISER KNOCKOU THREADEDSLOT FLARE FITTING

FLARE CAP _

SUPPLY AND RETURNINSULATION CUT LINE

Fig. 47 -- 42SU Unit Knockout Insulation Removal

Toxic residues and loose particles resulting from manufac-turing and field piping techniques such as joint compounds,soldering flux, and metal shavings may be present in theunit and the piping system. Special consideration must begiven to system cleanliness when connecting to solar,domestic or potable water systems.

Submittals and product literature detailing unit operation,controls, and connections should be thoroughly reviewed BE-FORE beginning the connection and testing of risers andpiping.

To assure optimal unit performance, the supply connec-tion(s) are marked on the unit's coil with an '%" meaning sup-ply or inlet and "R" meaning return or outlet indicating flow di-rection to and from the coil. Blue letters mark the chilled waterconnections and red letters mark the hot water connections.

The unit's internal piping is designed to accommodate a to-tal riser vertical movement of-q½ in., due to thermal expan-sion and/or contraction, when positioned properly at the job-site. Risers must be anchored to the building structure to limitexpansion and contraction movement to a maxilnum of 3 inch-es. Riser anchoring and expansion compensation is not includ-ed in the unit and must be provided. Riser end caps, air vents,and/or flushing loops must be provided at the jobsite by theinstaller.

Proper field riser installation and vertical positioning in theunit should have a pipe run-out to the service valves which arecentered in the knockout access slots and that slope downslightly away from the riser (see Fig. 48). This prevents con-densation from running back to the riser and possible damagefrom dripping at the bottom of a riser column. Each job has

Fig. 48- 42SU Unit Riser to Unit InstallationSetup

Riser to Unit Installation -- Before making the riser joints,the riser insulation must be pulled back away from the joint andprotected from heat during the brazing process. Each riser jointmust be in vertical alignment. Variations in floor-to-floor di-mensions may require field work such as cutting offor extend-ing the risers. This operation is the responsibility of the install-er. The riser joint filler material must be selected to withstandthe total operating pressure (both static and pumping head) towhich the system will be subjected. Low temperature lead al-loy solders such as "50/50" and "60/40" are normally not suit-able.

Riser to Drain Installation

1.

2.

After the applicable supply, return, and drain knockoutshave been removed, carefully position the unit so that theriser ball valves penetrate into the unit through the riserknockouts making sure the insulation penetrates into theunit as shown in Fig. 48-51.

Before anchoring the equipment in place, the unit must beleveled and the cabinet must be plumb and squared. Theunit may be anchored in place by bolting directly throughthe unit floor or attaching to the cabinet in some locationthat will not interfere with drywall or other items such asthe supply grille, thermostat, or return access panel.When attaching to the unit cabinet, care must be taken tonot penetrate the cabinet in locations that may damage in-ternal components or wiring. The mounting technique is amatter of choice; however, the unit should always be an-chored securely to prevent movement during constructionand riser expansion and contraction. After anchoring theunit, it is then ready for the various service connectionssuch as riser connections and electrical.

RISERSTUBOUT

FLEXIBLE

HOSE KIT -_

RISER

BALLVALVE

COMPONENTS.

Fig. 49- 42SU Unit Riser to Unit Installation

48

BALL

VALVE WRENCH

L

SWIVELBACK-UP CONNECTIONWRENCH

Fig. 50 -- 42SU Unit Riser to Unit Installation(Tighten Swivel Connections)

UNIT INSULATION_

RISER KNOCKOUT\

UNITWALL

RISER

P-TRAP

Fig. 51 -- 42SU Unit Riser to Drain Installation

3.

4.

5.

The plastic flare caps on the end of the riser ball valvesshould be removed and discarded.

All universal stack units use remforced braided stainless

steel flexible hose kits for piping between field-installedrisers and unit water coils as shown m Fig. 49. The hosekit design has threaded connections on each end. Thehose kits allow for riser fluctuations due to thermalexpansion.

Use a wrench to tighten the swivel connections. Use abackup wrench to hold the riser ball valve stationary toprevent it from bending or twisting durmg installation asshown m Fig. 50. Be careful to not over tighten swivelconnections.

Hose connection torque requirements are 350 in. lb +10/-0 in. lb to prevent leaks.

6. Locate the unit's coil fittmg.

7. The plastic flare caps on the end of the coil fitting shouldbe removed and discarded.

8. Use a wrench to tighten the swivel connections. The baf-fle acts as a secondary wrench. Be careful to not overtighten swivel connections.


9. Locate the p-trap drain and rubber hose factory installedto the dram pan connection in the bottom of the unit asshown m Fig. 51.

10. Push the rubber drain hose over the riser drain smbout. Becareful not to bend the drain smbout.

11.

12.

Adjust the hose clamp over the riser smbout and rubberhose to hold in place as shown in Fig. 51.

Test for leaks. Any and all leaks should be repaired beforeproceeding with installation. When testing with air orsome other gas, it might be necessary to tighten stempacking nuts on some valves to maintain air pressure inthe riser. Pressure testing risers with water should be donewith the unit service valves closed to prevent flushing de-bris into the unit valve packages. This will also allow ris-ers to be drained down after testing in the winter to avoidfreeze-up problems. In the event that leaking or defectivecomponents are discovered, the sales representative mustbe notified BEFORE any repairs are attempted. All leaksshould be repaired before proceeding with the unitinstallation.

13. After system integrity has been established, the riser insu-lation must be pulled back into place over the joint andglued or sealed to prevent sweating and heat loss or gam.All of the risers including the riser stubouts should beproperly covered with insulation. Internally mountedchilled water piping and valves are located over the drainpan and need not be insulated.

Any fireproofing requirements where risers or piping pene-trate floors or walls are the responsibility of the installer. Thiswork should be done only after all pressure testing is complet-ed. The fireproofing method used must accolmnodate pipe ex-pansion and contraction and the piping must be protected fromabrasion and chemical attack. The pipe msulation also must bemaintained to prevent sweatmg and must be protected fromwear or erosion at the joint between the insulation and the fire-proofing material.

When no risers are ordered for the universal stack unit, it isthe responsibility of the mstaller to make sure that an isolationball valve is mstalled between each supply and return pipingconnection to the unit. Flare fittings are factory provided to al-low connection between the ball valves and the hoses.

Supply Air Installation -- Each side of the unit has one sup-ply air knockout as well as a supply air knockout on the top ofthe unit (see Fig. 45).

1. Determine which supply air opening/openings are re-quired for your application.

NOTE: The supply air opening on the riser side of theunit should not be used.

2. Use a sharp retractable knife to trim insulation using cen-ter knockout slot/trim lme as pattern (see Fig. 52).

3. Use a sharp standard needle nose pliers and grab knock-out tab (see Fig. 52).

KNOCKOUT TAB_/(IOPLACES)

DUCT BREAK(4 PLACES)

KNOCKOUT TABTRIM LINE

Fig. 52 -- 42SU Unit Supply Air Installation

4. Twist or pry pliers back and forth until knockout tabbreaks away from unit.

5. Repeat for all supply air tabs until all have been broken.

6. Discard center knockout piece. Be careful of sharp edges.

49

7. Useasharpretractableknifetotrilnanyexcessinsulationusingknockoutholeaspattern.

8. Useductpliers(handseamers)tofoldductflangeoutoftheunit90degreesforeachsideofthesupplyairopeningalongductbreak(seeFig.52).The90-degreeflangescannowbeusedasdrywallstopstopreventcoverageofdis-chargeopening(seeFig.53).

9. Useadhesiveor glueto re-attachinsulationthathaspulledawayfromtheunitduringknockoutremovalprocess.

10.Forductedapplicationstapeshouldbeappliedalongandaroundallofthesupplyairopeningknockoutstopreventairleakage.

Duc ze

tUNIT

INSULATION

Fig. 53 -- 42SU Supply Air Installation

All installations should be made in compliance with all gov-erning codes and ordinances. Compliance with all codes is theresponsibility of the installing contractor.

42 SM Units -- The unique design of the mega stack fan coilunit allows for field configuration of each unit. Risers, shownwith unit, are for reference only. All risers are factory fabricat-ed and shipped loose for field installation.

It is important that you identify all of the unit feature loca-tions before proceeding with the installation. Also, it must bedetermined whether your application requires a mating unit(primary/secondary) and its configurations. Consult your localsales representative or the factory for further details on prima-ry/secondary arrangelnents.

Unit orientation is determined based on the location of the

risers in the building. Risers can only be installed on the rearside of the unit and it always determines the rear of the megastack unit. The return air is always on the front (see Fig. 54).

LEFT

@G@@@

REAR I

42SMCABINET RIGHT

FRONT

RETURN AIR

Supply. Return. and Drain Risers

Toxic residues and loose particles resulting froln lnanufac-raring and field piping techniques such as joint compounds,soldering flux, and metal shavings may be present in theunit and the piping system. Special consideration must begiven to system cleanliness when connecting to solar,domestic or potable water systems.

Submittals and product literature detailing unit operation,controls, and connections should be thoroughly reviewed BE-FORE beginning the connection and testing of risers andpiping.

The supply and return connections are marked on the coilstub.outs and the valve package depending on your configura-tion. "CS" means cold water supply, "CR" means cold waterreturn, "HS" means hot water supply, and "HR" means hot wa-ter return to indicate flow direction to and from the coil. Blueletters mark the chilled water connections and red letters markthe hot water connections.

The unit internal piping is designed to accommodate a totalriser vertical movement of+l 1/2 m., due to thermal expansionand/or contraction, when positioned properly at the jobsite.Risers must be anchored to the building structure to limit riserexpansion and contraction movement to a lnaxilnum of 3 inch-es. Riser anchoring and expansion compensation is not includ-ed in the factory-supplied unit and must be field provided.While some special riser features are available from the factory,riser end caps, air vents, and/or flushing loops are normallyprovided on the job by the installer.

Riser to Unit Installation -- Proper riser installation and verti-cal positioning in the unit provides for a unit piping ran-out tothe service valves which are centered in the access slots and

level or sloping down slightly away from the riser. This pre-vents condensation from running back to the riser and possibledamage from dripping at the bottom of a riser column. Eachjob has specific requirements and satisfying those requirementsis the responsibility of the installer.

Riser to Drain Installation

1. Carefully position the unit so that the riser ball valvespenetrate into the unit through the riser slot making surethe insulation penetrates into the unit as shown in Fig. 55and 56.

OUTER UNIT INSULATION

RISER STUBOUTINSULATION

BALLVALVE

THREADEDFITTING

HR HS CR CS }o o o oR = RETURN HA = HOT WATER RETURN

D = DRAIN HS = HOTWATERSUPPLY

S = SUPPLY D = DRAIN

2-or4-PIPE CR = COLD WATER RETURNCS = COLD WATER SUPPLY

Fig. 54 -- 42SM Unit Installation

FLARECAI

Fig. 55 -- 42SM Riser to Unit Installation

5O

RISER

RISER STUBOUTBALL

VALVE

COMPONENTS.

FLEXIBLE

HOSE KIT

COIL

2.

3.

4.

5.

Fig. 56 -- 42SM Riser to Unit Installation

Before anchoring the equipment in place, the unit must beleveled and the cabinet must be plumb and squared. Theunit may be anchored in place by bolting directly throughthe unit's floor or attaching to the buildings walls throughthe cabinet walls in some location that will not interferewith drywall or other items such as the supply grille, ther-mostat, or return access panel. When attaching sheetrockto the unit cabinet, care must be taken to not penetrate thecabinet in locations that may damage internal compo-nents or wiring. The mounting technique is a matter ofchoice; however, the unit should always be anchored se-curely to the building to prevent movement during con-struction and riser expansion and contraction. After an-choring the unit, it is then ready for the various serviceconnections such as riser connections and electrical.

The plastic flare caps on the end of the riser ball valvesshould be removed and discarded.

All mega stack units use reinforced braided stainless steelflexible hose kits for piping between field installed risersand unit water coils as shown in Fig. 56. Each hose hasthreaded connections on each end. The hose kits allow for

riser fluctuations due to thermal expansion.

Use a wrench to tighten the swivel connections. Use abackup wrench to hold the riser ball valve stationary toprevent it from bending or twisting during installation asshown m Fig. 57. Be careful to not over tighten swivelconnections.

BALL

VALVE WRENCH

SWIVEL

BACK-UP CONNECTIONWRENCH

Fig. 57 -- 42SM Riser to Unit Installation(Tighten Swivel Connections)


6. Locate the unit's coil fitting.

7.

8.

The plastic flare caps on the end of the coil fitting shouldbe removed and discarded.

Use a wrench to tighten the swivel connections. The baf-fle acts as a secondary wrench. Be careful to not overtighten swivel connections.

Hose connection torque requirements are 350 in. lb +10/-0 m. lb to prevent leaks.

9. Locate the p-trap dram and rubber hose factory installedto the drain pan connection in the bottom of the unit asshown in Fig. 58.

10. Push the rubber drain hose over the riser drain smbout. Be

careful that you do not bend the dram smbout.

11. Adjust the hose clamp over the riser smbout and rubberhose to hold in place as shown in Fig. 58.

DRAIN PAN\

UNIT WALL

f

P-TRAP

12.

13.

Fig. 58 -- 42SM Riser to Drain Installation

Test for leaks. Any and all leaks should be repaired beforeproceeding with installation. When testing with air orsome other gas, it might be necessary to tighten steinpacking nuts on some valves to maintain air pressure inthe riser. Pressure testing risers with water should be donewith the unit service valves closed to prevent flushing de-bris into the unit valve packages. These valves will alsoallow risers to be drained down after testing m the winterto avoid freeze-up problems. In the event that leaking ordefective components are discovered, the sales represen-tative must be notified BEFORE any repairs are attempt-ed. All leaks should be repaired before proceeding withthe unit installation.

After system integrity has been established, the riser insu-lation must be pulled back into place over the joint andglued or sealed to prevent sweating and heat loss or gain.All of the risers including the riser stubouts should beproperly covered with insulation. Internally mountedchilled water piping and valves are located over the drainpan and need not be insulated.

Any fireproofing requirements where risers or pipingpenetrate floors or walls are the responsibility of the in-staller. This work should be done only after all pressuretesting is completed. The fireproofing method used mustaccolmnodate pipe expansion and contraction and thepiping must be protected from abrasion and chemical at-tack. The pipe insulation also must be maintained to pre-vent sweating and must be protected from wear or ero-sion at the joint between the insulation and the fireproof-ing material.

When no risers are ordered for the mega stack unit, it isthe responsibility of the installer to make sure that a field-supplied isolation ball valve is installed between eachsupply and return piping connection to the unit. Flare fit-

51

tingsarefactoryprovidedto allowconnectionbetweenthe ball valves and the hoses.

Variations in floo>to-floor dhnensions may require fieldwork such as cutting off or extending the risers. This op-eration is the responsibility of the installer. The riser jointfiller material must be selected to withstand the total op-erating pressure (both static and pumping head) to whichthe system will be subjected. Low temperature lead alloysolders such as "50/50" and "60/40" are normally notsuitable.

Chilled water and hot water risers should never be pipedto dram down into the condensate riser. Extensive water

damage can occur due to drain overflow. Drain chilledand hot water risers to a remote location away from theunit such as sink, room and floor drams.

All installations should be made in compliance with allgoverning codes and ordinances. Compliance with allcodes is the responsibility of the installing contractor.

Supply Air Installation

1. If the unit has been ordered with a supply air plenum,then each side of the unit has one supply air knockout aswell as a supply air knockout on the top of the unit (seeFig. 59 and 60).

2. Determine which supply air opening/openings are re-quired for your application.

NOTE: The supply air opening on the riser side of theunit should not be used.

3. Use a sharp retractable knife to trim insulation using cen-ter knockout slot!trim line as pattern (see Fig. 61).

4. Use a sharp standard needle nose pliers and grab knock-out tab (see Fig. 61).

5. Twist or pry pliers back and forth until knockout tabbreaks away from unit.

6. Repeat for all supply air tabs until all have been broken.

7. Discard center knockout piece. Be careful of sharp edges.

8. Use a sharp retractable knife to trim any excess insulationusing knockout hole as pattern.

9. Use duct pliers (hand seamers) to fold duct flange out ofthe unit 90 degrees for each side of the supply air openingalong duct break (see Fig. 61). The 90-degree flanges cannow be used as drywall stops to prevent coverage of dis-charge opening (see Fig. 62).

SIDEVIEW

SIDE SUPPLY AIRKNOCKOUT --(1 PER SIDE)

OPTIONALSUPPLYPLENUM

MEGA MODCABINET

_J

Fig. 59 -- 42SM Unit Knockout LocationsSide View (Typical)

TOP VIEW

ELECTRICAL_

KNOCKOUTS "_

__ TOP SUPPLYAIR KNOCKOUT

Fig. 60 -- 42SM Unit Knockout LocationsTop View (Typical)

mR mR mR

I KNOCKOUT TAB

/ (lO PLACES)

t / DUCT BREAK(4 PLACES)

KNOCKOUT TABTRIM LINE

./-

Fig. 61 -- 42SM Unit Supply Air Installation

:""_ DUCT FLANGE

UNIT

INSULATION

Fig. 62 -- 42SM Unit Supply Air Installation

10. Use adhesive or glue to re-attach insulation that haspulled away from the unit during knockout removalprocess.

11. For ducted applications tape should be applied along andaround all of the supply air opening knockouts to preventair leakage.

Step 2 -- Make Piping Connections -- Access topiping is available through the access panels at the side of theunits or front of the unit. Qualified personnel in accordancewith local and national codes must perform all piping connec-tions. Refer to Tables 1-4 for piping connections.

NOTE: It is important to have a colmnon understanding ofwhich side of the unit is the right hand side and which is theleft hand side.

When facing the supply air outlet from the front of the unit(air blowing in your face), your right hand will be on the rightside of the unit and your left hand will be on the left side of theunit. See Fig. 63. Refer to Fig. 64 and 65 for typical pipingconnections.

52

The supply and return piping connections of the factory-provided valve package are either swaged for field brazing(standard) or union fitted (optional) for field connection to thecoil.

I UNIT ILEFT RIGHT

HAND _ HAND

Fig. 63 -- Unit End Reference

VALVE PACKAGES- There are lhnitations on physicalsize of pneumatic valves, quantity and type of matchingcomponents, and required control interface. See Fig. 63.

Consult factory before ordering any special valve packagecomponents that are not covered in this book.

Valve packages are shipped with the units or m unit cartons.Valve packages include belled ends for field soldering to coilconnections.

All factory-furnished cooling valve packages are arrangedto position as much of the package as possible over an auxiliarydram pan or drip lip. This helps minimize field piping insula-tion requirements. Refer to Fig. 67-70 for pipe connectionconfigurations. See Table 5 for descriptions of connnon pipingcomponents.

R.H. Piping

LH. Piping

NOTE: Chilled water piping determines the hand of the unit,

SAME END CONNECTION

R.H. (CW) Piping "'1

Piping

-- L.H. (CW) Piping

Piping

NOTE: Chilled water piping determines the hand of the unit,

OPPOSITE END CONNECTION

Valve Packages For 2-Pipe Systems -- Valve packages for standard 2-pipe units are piped for same endconnection (L.H. or R.H.).

Valve Packages for 4-Pipe Systems -- Select 2 valve packages per unit.

NOTE: Hot water valve package requirements may not be the same as chilled water valve package!

LEGEND

CW -- Chilled WaterHW -- Hot WaterLH -- Left HandRH -- Right Hand

OPPOSITE END CONNECTION

15

SAME END CONNECTION

Fig. 64 -- Pipe Connection Configurations

53

Hydronic Coil Arrangement

COOLING

Field Piping Connections*

UNIT =

FRONT

i i

i _ NOTE: Consult factory if

_1_ heating circuit must beu. _ in preheat position.n- _ (Entering air side of coil)

HEATING CIRCUIT INREHEAT POSITION

(LEAVING AIR SIDE OF COIL)

VERTICAL FLOOR UNITS -- 42VB, VE, VFPipe into cabinet end compartment (opening in bottom andback).

I UNITFRONT

_7/7/////7//////////////////////////_

VERTICAL FLOOR UNITS -- 42VA, VCPipe to external connections (no cabinet).

CEILING UNITS (EXPOSED)- 42CG, CK, DE, DFPipe through knock-outs in rear of cabinet to coil and valvepackage connections.

I UNITTOP CEILING UNITS (CONCEALED)- 42CA, CE, CF, DA, DCPipe to connections extending from end of unit.

VERTICAL UNITS -- 42DDPipe to stub connections extending from side of unit.

UNIT IFRONT42VG

]I||

.!

WALL UNITS, FURRED-INPipe to stub connections at the side of unit.

or into optional piping compartment. Optional piping compart-ment is required if valves are factory installed. Factory-installedvalve package is limited to one 2-way or 3-way motorized valveand 2 hand valves.

*Location of field piping connections will vary depending on number of coil rows on factory-supplied coil orarrangement of factory-supplied valves.

Fig. 65 -- Piping Connection Positions

54

AIR VENT

I COILSS

Union PressureTest Port

CircuitSetter

Ball Valvew/ Mem. Stop

Ball Valve

=_,!_._ Swage

Swage

Union

l

I i

InsertionTest Port

ControlValve

Balance

- _ R

Test Port

Test Port

--4Z3, I I,

Fixed Flow Strainer

Ball Valve

I COIL I I SERVICE I IWATER FLOWII ISOLATIONCONNECTION FITTINGS , BALANCING STRAINER VALVES

Coil Connections (Positions A & B) -- When isolation valve only is added to supply or return line, the isolation valve will be factorybrazed to the coil stub-out, Addition of any other component or connection to the supply or return line will change the respective coilconnection(s),

Service Fittings (Positions C & D) -- Optional fittings for attaching pressure/temperature sensing devices to obtain pressure drop or tem-perature differential across coil, Used with ball valve or balance valve where extremely accurate water flow balancing is required,

Water Flow Balancing (Positions E, F, & H) -- Only one device per total valve package to be used for balancing water flow through thecoil, When isolation valve (ball valve or ball valve with memory stop at position H) is used for water flow balancing, do not specify additionalbalancing device at position E or E When balancing device is specified at position E or E isolation valve does not require balancing featureat position H (with a 3-way motorized valve, a bypass balancing valve may be specified in the bypass line to permit equal flow balancing),

Strainer (Position G) -- Does not include blow down fitting and should not be used in lieu of main piping strainers,

Isolation Valves (Positions H & J) -- Normally requires one each on supply and return line (see exception under water flow balancingabove), When position H is used for balancing (ball valve or ball valve with memory stop), check specifications for service valve require-ments,

Fig. 66 -- Symbols and Placement of Valves

55

The 2-way motorized valve motor drives valve open and aspring returns valve to normally closed position (no waterflow with unit OFF).

Supply connection at coil will be swage fit for field braze(standard) or union (option). Return connection at coil willbe factory brazed if isolation valve only. Addition of anyother component will require swage fit for field braze oroptional union connection.Check job specifications for system pressure, pressure droplimitations and flow rate prior to selecting valve packagecomponents or valve package size (1/2 in.,_/4 in., etc.).

2-PIPE SYSTEM (One Valve Package) or 4-PIPE SYSTEM(Two Valve Packages) Application:

• 2 Pipe i Hydronic Heating Only• 2 Pipe i Hydronic Cooling Only• 2 Pipe i Hydronic Cooling with Total Electric Heat• 4 Pipe i Hydronic Cooling and Heating

NOTE: A 1/4-in. bypass line is included in the piping pack-age when a 2-way valve is specified with a control packagecontaining an automatic changeover device.

LEGEND

Ball Valve

Motorized 2-Way Valve

AiR VENT

BALL VALVE

MOTORIZED2-WAY VALVE

aSWAGE BALL VALVE

| R

BALL VALVE

2) BALL i(1) 2-WAY MOTORIZED R_ _ J

MOTORIZED _v

ALVE

BALL VALVE (WITH_A= MEMORY STOP)

(2) HALL (ONE With [MEMORY STOP) R I _._(1) 2-WAY MOTORIZED I MOTORIZED

LVE

Fig. 67 -- Two-Way Motorized Control Valve Package

The 2-way motorized valve motor drives valve open and aspring returns valve to normally closed position (no waterflow through coil with unit OFF).

The aquastat bleed bypass bleeds a small amount of waterfrom supply to return when control valve is closed (requiredfor system water temperature sensing by aquastat).Aquastat (A) clips on supply line upstream from aquastatbleed bypass (as shown at right). It senses system watertemperature to prevent cooling operation with hot water insystem piping or heating operation with chilled water insystem piping. Additional aquastat is required to lock outthe optional auxiliary electric heat when hot water is in thesystem.

Supply and return connections at coil will be swage fit forfield braze (standard) or unions (option).

Check job specifications for system pressure, pressure droplimitations and flow rate prior to selecting valve packagecomponents or valve package size (1/2 in.,3/4 in., etc.).

2-PIPE SYSTEM (One Valve Package) Application:• 2 Pipe i Hydronic Cooling and Heating• 2 Pipe i Hydronic Cooling and Heating with Auxiliary

Electric Heat

NOTES: Additional aquastat required as noted above.

LEGEND

rJ=::LI Balancing Valve

Ball Valve

Circuit Setter

[><_ Gate Shut Off Valve

[_ Motorized 2-Way Valve

AIR VENT

BALL VALVESWAGE

B ----.--O RL AQUAS_rAT BLEED

MOTORIZED |_lr---- BY-PASS LINE

2-WAY VALVE |/ 4.''_ BALL VALVE

'+A+ ,_=m_ sSWAGE AQUASTAT

BALL VALVE

\ (,)GATE t/ (1) BALL R_ • _ ]

(1) 2-WAY MOTORIZED I MOTORIZED J IVl} .... i 2-WAY VALVE ! GATE/ UUIL I _ [ .... SHUTOFF

S _A,+

BALL VALVEi,_, _+. i BALANCING ,====:j_

I;; ;_LANO[NG R!

(1) 2-WAY MOTORIZED I _ r_Jl

COIL I _ _ BALLVALVE

---

_ _ CIRCU_TTER\ (1) BALL I _

/ (1) CIRCUIT SETTER R_ • I_l

(1) 2-WAY MOTORIZED I MOTORIZED _ _" _'_

] COIL I 2-WA_ALVE [ BALL VALVE

Fig. 68 -- Two-Way Motorized Control Valve Package with Aquastat Bleed Bypass Line

56

On the 3-way motorized valve flow is normally closed to coiland open to system return. Motor closes bypass flow to sys-tem return while opening flow through coil. Water bypassescoil and flows directly to system return when unit is OFR

The aquastat (A) clips on supply line upstream from 3-wayvalve (as shown above). It senses system water tempera-ture to prevent cooling operation with hot water in systempiping or heating operation with chilled water in system pip-ing. Aquastat(s) required for 2-pipe cooling and heating withautomatic changeover control and/or auxiliary electric heat.

A bypass balancing valve may be specified in the bypassline to permit equal flow balancing.

Supply and return connections at coil will be swage fit forfield braze (standard) or unions (option).

Check job specifications for system pressure, pressure droplimitations and flow rate prior to selecting valve packagecomponents or valve package size (1/2 in.,_/4 in., etc.).

2-PIPE SYSTEM (One Valve Package) or 4-PIPE SYSTEM(Two Valve Packages) Application:• 2 Pipe i Hydronic Heating Only• 2 Pipe i Hydronic Cooling Only• 2 Pipe i Hydronic Cooling with Total Electric Heat• 2 Pipe i Hydronic Cooling and Heating• 2 Pipe i Hydronic Cooling and Heating with Auxiliary

Electric Heat• 4 Pipe i Hydronic Cooling and Heating

COiL

AiR VENT

= BALLVALVE

_o_o_o ,-[TI O_ONAL| I BALANCE VALVE

s -- SWAGE_"'£: a_VALVESWAGE _

R

_S

BALANCINGVALVE

\ ,,_BALL i3.%o_,Z_v_BA'_LVE(1) 3-WAY MOTORIZED R:14J * SSo LLWLW

BALL VALVE(WITH MEMORY STOP)

\ ,2)BALL,ONEW,TR I_°1°_V_E/ MEMORY STOP) R _ M J

_ (1) 3-WAY MOTORIZED I _,.._]..,_ I BYPASS P_/|

CO'L S_LVE

LEGEND

r=h

L3

I_ Motorized Valve3-Way

*When aquastat is used for automatic changeover, bypass isrequired as indicated by dashed line.NOTES:

1. Packages factory furnished and installed.2. Valvesare 5/8-in.ODS unless otherwise specified.3. If an automatic flow control valve is added, it will be

located on supply line between shutoff valve and coil (ormotorized control valve, if supplied).

Balancing Valve

Ball Valve

Ball Valve with Memory Stop

Circuit Setter

Gate Shut Off Valve

BALL VALVE=- ; MOTORIZED\ (1) GATE I 3-WAY VALVE If_.|/ (1)BALL D_, r 1

,,_3-WAYMOTORIZEO°1 ._. IBYPASSM

_ _ATTo_vSHU ALVE

BALL VALVE

z2_ BALL i BALANCING

2 11_BALANCING RI VALVE% • H

_,,,_-WAYMOTOR,ZEDI ,.e_ \ IBYPASSM

COIL sl_-_ BALLVALVE/ _ MOTORIZED H

3-WAY VALVE

CIRCUIT SETTER_- i MOTORIZED

_ (1) BALL 3_ VALVE _/ (1) CIRCUIT SETTER R, - = _ _ I

,,) -WAYMOTORIZEOI IBYPAss (/ CO,LS LVE

Fig. 69 -- Three-Way Motorized Control Valve Package

57

When isolation valves only are specified, they will be brazedto the coil stub-outs.

Check job specifications for system pressure, pressure droplimitations and flow rate prior to selecting specific compo-nents or valve package size (1/2 in., 3/4 in., etc.).

2-PIPE SYSTEM ONLY (One Valve Package) Application:• 2 Pipe - Hydronic Heating Only• 2 Pipe - Hydronic Cooling OnlyNOTES:

1. Continuous water flow, chilled water or hot water•2. Not recommended for high humidity applications•3. Not recommended with unit-mounted thermostat on

vertical units•4. The addition of any other component(s) will

require swage fitting for field braze or optional unionconnection•

LEGEND

Balancing Valve

Ball Valve

Circuit Setter

Gate Shut Off Valve

*When aquastat is used for automatic changeover, bypass isrequired as indicated by dashed line•

NOTES:

• Packages factory furnished and installed•• Valves are 5/8-in• ODS unless otherwise specified•3• If an automatic flow control valve is added, it will be

located on supply line between shutoff valve and coil (ormotorized control valve, if supplied)•

AIR VENT

.,->RI !

1%.,,4

I_ BALLVALVE __.lm_ R

COIL I SEE NOTE 4I

si,sEE _I_T E

WiTH HAND VALVES ONLY

) (2) BALL Ri

BALL VALVE

V1BALL VALVE

1) BALL [

(1) GATE R j

COiL (

BALL VALVE

GATE SHUTOFF VALVE

BALL VALVE

\ BALL )(/ (1) BALANCING RJ F-_\ ,_.,_.,, J BALANCING

ALVE

= CiRCUiT SETTER'_ (1) BALL J _T %

(1) CIRCUIT SETTER R_ L

BALL VALVEH

Fig. 70 -- Valve Package without Motorized Control

58

42C,D,V DRAIN CONNECTIONS -- Install drain line inaccordance with all applicable codes. A continuous pitch of1 in. per 10 ft of condensate drain line run is necessary foradequate condensate drainage. Insulate the drain line toprevent sweating. Extend the drain line straight from the drainpan before making any turns. The installer must provide propersupport for the drain line to prevent undue stress on theauxiliary drain pan.

Install trapped dram line in accordance with all applicablecodes (see Fig. 71). A drain trap may be required by localcodes and is recolmnended for odor control. The differential

height inlet to outlet must be at least 1-in. wg greater than thetotal static pressure of the unit. The differential height of theoutlet to the bottom of the trap must not be less than the totalstatic pressure of the unit.

Provide a trap of at least 2-in. near the end of the drain lineto prevent odors from entering the rooms.

CONDENSATEPAN STUB-OUT

Fig. 71 -- Typical Drain Line Details(42D Unit Shown)

42C,D,V WATER SUPPLY/RETURN CONNECTIONS --Install piping m accordance with all applicable codes. Positionvalves over the drain pan. Be sure valves are in proper operat-ing position and are easily accessible for Mjustment. SeeFig. 67-70. Refer to Fig. 72 for copper water robe and jointmaterial pressure ratings.

If coil and valve package connections will be made with asolder joint, care should be taken to ensure that the componentsin the valve package are not subjected to high temperatures,which may damage seals or other materials. Many 2-positionelectric control valves are provided with a manual operatinglever. This lever should be m the OPEN position during allsoldering operations.

If coil connection is made with a union, the coil side of theunion must be prevented from turning (it must be backed up)during tightening. See Fig. 67-70 for colrunon valve packages.

DO NOT OVERTIGHTENT Overtightening will distort(egg shape) the union seal surface and destroy the union.

NOTE: The prqiect specifications for system pressure, pres-sure drop limitations, and flow rate should be checked prior toselection of specific components or the valve package size.

42C,D,V STEAM CONNECTIONS -- On units with steamheating coils, the maxhnum steam pressure applied to the unitshould never exceed 10 psig. However, when steam is used ona 4-pipe application system with 1-row and 2-row coils themaximum steam pressure should never exceed 5 psig (suitablefor only low pressure steam).

Do not drain the steam mains or take-off through the coils.Drain the mains ahead of the coils through a steam trap to thereturn line. Overhead returns require 1 psig of pressure at thesteam trap discharge for each 2 ft elevation to ensure continu-ous condensate removal.

Proper steam trap selection and installation is necessary. Asa guideline in creating a steam trap locate the steam trap dis-charge at least 12 in. below the condensate return connection.This provides sufficient hydrostatic head pressure to overcometrap losses and ensure complete condensate removal.

42C,D,V DIRECT EXPANSION (DX) REFRIGERANTPIPING--Use the condensing unit manufacturer's recom-mended line sizes and requirements. Suction line must beinsulated for correct operation. Use refrigerant-grade copperlines only. The unit is not applied as a heat pump.

Thermostatic expansion valve (TXV) and sensing bulb arefactory-installed on units when DX coil option is chosen withdistributor and TXV.

NOTE: Ifa hot water coil is used in the reheat position, a field-supplied freezestat must be installed to protect the coil.

TEST AND INSULATE -- When all joints are complete,perform hydrostatic test for leaks. Vent all coils at this time.Check interior unit piping for signs of leakage from shippingdamage or mishandling. If leaks are found, notify your Carrierrepresentative before initiating any repairs. Release trapped airfrom system (refer to Step 7 -- Make Final Preparationssection).

Never pressurize any equipment beyond specific test pres-sure. Always pressure test with an inert fluid or gas, such asclear water or dry nitrogen to avoid possible damage or injuryin the event of a leak or component failure during testing.

All water coils must be protected from freezing after initialfilling with water. Even if system is drained, unit coils maystill have enough water to cause damage when exposed totemperatures below freezing.

Following the hydrostatic test, insulate all piping to preventsweating.

To ensure compliance with building codes, restore the struc-ture's original fire resistance rating by sealing all holes withmaterial carrying the same fire rating as the structure.

59

SYMBOUSKETCH

"'i,I

L..<:

,T.

=,,.d

3

J

Table 5 -- Piping Components

DESCRIPTIONCv FACTOR

112in. 314in.

MANUAL AIR VENT: Threaded brass needlevalve with screwdriver slot for adjustment.

Application -- Body brazed into high point ofheating and cooling coils for bleeding air fromcoil. Standard item on all hydronic coils (notused on steam or DX coils). Should not beused in lieu of main system air vents.

AUTOMATIC AIR VENT: Nickel plated brassvalve, fiber-disc type, with positive shut-off ball-check and quick vent feature via knurled ventscrew.

Application -- Optional replacement for man-ual air vent. Automatically passes minutequantities of air through the fiber discs whichexpand upon contact with water, completelysealing the valve. As air accumulates, the fiberdiscs dry and shrink, repeating the cycle. Notrecommended for removing large quantities ofair encountered during initial start-up or subse-quent draining and refilling. Should not beused in lieu of main system air vents.

SWAGE: Copper tube end expanded to accepta copper tube of the same size for factory orfield brazing.

Application -- Used where possible for all tub-ing joints for best joint integrity.

UNION: Combination wrought copper/castbrass union assembly, solder by solder.

Application -- Used for quick connect (and dis-connect) of valve package components to min-imize field labor and facilitate servicing of unit.

INSERTION TEST PORT: Brass body valvefor acceptance of test probe (up to 1/8 in.diameter).

Application -- Installed on one (or both) sidesof the coil to allow for temperature or pressuresensing. Used for close tolerance water bal-ancing and service analysis.

PSIRATING*

FSTEAM

USE

N/A N/A 400 100 NO

N/A N/A 125 240 NO

PRESSURE TEST PORT: Brass body 1/4 in.service access fitting with removable depres-sor type core.Application -- Installed on both sides of thecoil to allow for pressure sensing. Attach pres-sure gages to facilitate close tolerance waterbalancing.

CIRCUIT SETTER: Variable water flow balanc-ing valve with manual adjustment knob,pointer, percent-open scale, memory stop andintegral pressure read-out ports.

Application -- Used for close tolerance waterflow balancing. Positive shut-off ball valve fea-ture allows usage as combination balancingand shut-off valve.

N/A N/A 300 200 YES

N/A N/A 300 200 YES

N/A N/A 250 250 NO

N/A N/A 400 210 NO

LEGEND

Cv -- Coefficient of VelocityDX -- Direct Expansion

*Check all system component pressure ratings (coils, values,pumps, etc.) with manufacturer and any applicable local or nationalpiping codes prior to specifying system pressure rating.

2.12 3.9 300 250 NO

6O

SYMBOUSKETCH

FLOW DIRECTION

Table 5 -- Piping Components (cont)

DESCRIPTION

BALANCE VALVE: Variable water flow man-ual balancing valve with screwdriver slotadjustment screw.

Application i Often used in conjunction withtest port fittings for water flow balancing. Bal-ance by temperature differential or coil pres-sure drop (check specifications for servicefittings required if balancing by pressuredrop). May be used in 3-way valve bypassline to permit equal flow balancing.

FIXED FLOW VALVE: Flexible orifice type(non-adjustable).

Application i Used for water flow balancing.Valve automatically adjusts the flow to within10% of set point.

STRAINER: Y-type body with 20 mesh stain-less steel screen.

Application -- Used for removal of small par-ticles from system water during normal sys-tem operation. Should not be used in lieu ofmain system strainers. Strainer screen mayhave to be removed during initial high pres-sure system flushing during start-up. Screenshould be removed and cleaned per normalmaintenance schedule (provisions for strainerblow-down not provided).

BALL VALVE: Manual balance and shut-offvalve.

Application -- Used for unit isolation andwater flow balancing. Without memory stopfeature water balance point must be markedby installer (if necessary). Check specifica-tions for service fittings required when usedfor water balancing.

BALL VALVE WITH MEMORY STOP:Manual balance and shut-off valve.

Application -- Used for unit isolation andwater flow balancing. The adjustable memorystop feature allows return to the balance pointafter shut-off. Check specifications forservice fittings required when used for waterbalancing.

Cv FACTOR

1/2 in.

RATING*

314in. PSI F

4.0 14 300 250 NO

Valve orifice sizedetermines Cv fac-tor. The orifice ofthese fixed flowvalves changes asflow is regulated.As the water pres-sure increases,the orifice sizedecreases,thereby automati-cally limiting theflow rate to thespecified gpm(+10%).

STEAMUSE

600 220 NO

9.0 19.0Clean Clean 400 150 N/A

14.2 28.6 600 350 YES

LEGEND



14.2 28.6 600 350 N/A

6!


SYMBOUSKETCH DESCRIPTION

2-WAY MOTORIZED VALVE (25 PSI close-off dif-ferential pressure): Electric 2-position flow controlvalve (open/closed). Normally closed body with man-ual override lever. Installed in supply line to unit.

Application -- All standard control and valve pack-ages are based upon normally closed valves (valveelectrically powered open and closed by springreturn when electric power removed). Manualoverride lever allows valve to be placed in the openposition for secondary (unit) flushing, constant waterflow prior to start-up, etc. Manual override is auto-matically disengaged when valve is electrically acti-vated. Consult factory for normally open valveapplications.

2-WAY MOTORIZED VALVE (150 PSI close-off dif-ferential pressure): Electric 2-position flow controlvalve (open/closed). Normally closed body with man-ual override lever. Installed in supply line to unit.

Application -- All standard control and valve pack-ages are based upon normally closed valves (valveelectrically powered open and closed by springreturn when electric power removed). Manualoverride lever allows valve to be placed in the openposition for secondary (unit) flushing, constant waterflow prior to start-up, etc. Manual override is auto-matically disengaged when valve is electrically acti-vated. Consult factory for normally open valveapplications.

3-WAY MOTORIZED VALVE (25 PSI close-off dif-ferential pressure): Electric 2-position flow controlvalve (closed to coil/open to bypass or open to coil/closed to bypass). Normally closed with manualoverride lever. Installed in supply line to unit.

Application -- Same comments as 2-way motorizedvalve except with manual override lever engaged thevalve is open to both ports and water flow will takethe path of least resistance through the valve pack-age (not necessarily 100% through the coil).

3-WAY MOTORIZED VALVE (150 PSI close-off dif-ferential pressure): Electric 2-position flow controlvalve (closed to coil/open to bypass or open to coil/closed to bypass). Normally closed with manualoverride lever. Installed in supply line to unit.

Application -- Same comments as 2-way motorizedvalve except with manual override lever engaged thevalve is open to both ports and water flow will takethe path of least resistance through the valve pack-age (not necessarily 100% through the coil).

Cv FACTOR RATING*

1/2in. 3/4in. PSI F

3.5 3.5 300

4.9 10.3 300

4.0 4.0 300

4.9 4.9 300

STEAMUSE

YES15

200 PSIMAX.

240 NO

200 N/A

240 N/A

LEGEND



62


SYMBOUSKETCH

J

DESCRIPTION

MODULATING VALVE (Optional)(Non-Spring Return, Floating Point Actuator):Modulating valves are designed to control the flow inthe circuit by making incremental adjustments to theflow path within the valve.

Application -- To control fluid flow in fan coil units.

On the 42DD, SG,SJ,SH commercial fan coil units,the factory-provided modulating valve has applica-tion restrictions. In these models, the valve packagesare located in the air stream, downstream of the coil.Due to the ambient temperature limitations of themodulating valves, the valves can be used in theunits listed above only with a 2-pipe cooling system.

MODULATING VALVE (Optional)(Non-Spring Return, Proportional Type Actuator):Modulating valves are designed to control the flow inthe circuit by making incremental adjustments to theflow path within the valve.

Application -- To control fluid flow in fan coil units.

On the 42DD, SG,SJ,SH commercial fan coil units,the factory-provided modulating valve has applica-tion restrictions. In these models, the valve packagesare located in the air stream, downstream of the coil.Due to the ambient temperature limitations of themodulating valves, the valves can be used in theunits listed above only with a 2-pipe cooling system.

MODULATING VALVE (Requires ETO [Engineer-ing to Order])(Spring Return): Modulating valves are designed tocontrol the flow in the circuit by making incrementaladjustments to the flow path within the valve.Application i Same comments as non-spring returnexcept when powered, the actuator moves to thedesired position, at the same time tensing the springreturn system. When power is removed for morethan two minutes the spring returns the actuator tothe normal position.

AQUASTAT: Water temperature sensing electricalswitch.

Application -- Clips directly on nominal size 1/2 in. or3/4 in. copper tubing for water temperature sensing.Must be correctly located for proper controloperation.

Cv FACTOR

1/2 in. I 3/4 in.

4.0

4.0

4.0

RATING*

PSI F

300

300

300

STEAMUSE

200 N/A

200 N/A

200 N/A

LEGEND


*Check all system component pressure ratings (coils, values,pumps, etc,) with manufacturer and any applicable local or nationalpiping codes prior to specifying system pressure rating,

63

COPPER TUBESAFE WORKING PRESSURE (PSI)

NOM. WALL I TYPESIZE 100 200 300 400 500 600

.065

3/,=1.045

.032

.065

1 I .055.035

.065

K

L

M

K

L

M

K

11/4 1.0551 L.042

.072

11/2 I .060.049

.083

2 I .o7o.058

.095

21/2 I .080.065

.109

3 I .o9o.072

.134

4 I .11o095

M

K

L

M

K

L

M

K

L

M

K

L

M

K

L

M

LEGEND:I

System pressure limitationdue to joint material andwater temperature

iiiii!i!iii!ii i ! :+:: - ..... 490

530

570

440

500

410

420

400

340

270

390

320

360

290

i®

330Maximum safe workingpressure (psi) for copperwater tube alone at 200 F.Nominal size tube shown, add1/8" to obtain actual tube OD

IMPORTANT: THE ABOVE CHART IS FOR

REFERENCE ONLY. Check all system componentpressure ratings (coils, valves, pumps, etc.) and anyapplicable local or national piping codes prior tospecifying system pressure rating.

A

B

C

NOTES:

50-50 Lead-Tin at 200 F



JOINT MATERIALS

D

Note 1 E

F

95-5 Tin-Antimony at 200 F



1. Not recommended for high system water pressures,2. Standard factory joint material,

Fig. 72 -- Copper Water Tube and Joint Material Pressure Ratings

Note 2

64

Step 3 m Make Electrical Connections m Referto unit nameplate for required supply voltage, fan and heateramperage and required circuit ampacity. Refer to unit wirediagram for unit and field wiring. Since each project is dif-ferent and each unit on a project may be different, the in-staller must be familiar with the wiring diagram and name-plate on the unit before beginning any wiring. Make sure allelectrical connections are in accordance with unit wiring di-agram and all applicable codes. The type and sizing of allwiring and other electrical components such as circuitbreakers, disconnect switches, etc. should be detennined bythe individual .job requirements, and should not be based onthe size and/or type of connection provided on the equip-ment. All installations should be made in compliance withall governing codes and ordinances. Compliance with allcodes is the responsibility of the installing contractor.

The fan motor(s) should never be controlled by any wiringor device other than the factory-supplied switch or thermostat!switch combination unless prior factory authorization isobtained. Fan motor(s) may be temporarily wired for useduring construction only with prior factory approval and onlyin strict accordance with the instructions issued at that time.

On 42S vertical stack units, the unit electrical supply is de-signed to enter through knockouts provided in the top of theunit and pass down through matching knockouts in the controlsection top. Where space allows, power may be pulled directlythrough the side of the cabinet into the control section.

All components furnished for field installation by either thefactory or the controls contractor should be located andchecked for proper function and compatibility. All internalcomponents should be checked for shipping damage, and anyloose connections should be tightened to lnimmize problemsduring start-up.

Any devices such as fan switches or thennostats that havebeen furnished from the factory for field installation must bewired in strict accordance with the wiring diagram that appearson the unit. Failure to do so could result in personal injury ordamage to components, and will void all manufacturer'swarranties.

Units with factory-supplied and factory-installed aquastatsmay be shipped with the aquastats mounted on a coil stub-out.If this is the case, remove the aquastat before installing valvepackage. When reinstalling aquastats, consult the factory-piping diagram in the submittal for proper location. If the valvepackage is field-supplied, the aquastat must be installed in alocation where it will sense the water temperature regardless ofthe control valve position. A bleed bypass may be required toguarantee proper aquastat operation. The aquastat bypass lineallows a small amount of water to flow from the supply to thereturn piping when the control valve is closed.

NOTE: The aquastat must be able to sense whether theflowing water is being chilled or heated and switches a contactclosed to provide automatic summer or winter changeover forthe system. When a two-pipe cooling/heating system withoptional auxiliary electric heat is desired, an additionalaquastat is required.

All field wiring must be in accordance with governingcodes and ordinances. Any modification of unit wiring withoutfactory authorization will invalidate all factory warranties andnullify any agency listings. The manufacturer assumes no re-sponsibility for any damages and/or injuries resulting from hn-proper field installation and/or wiring.

IMPORTANT: Wiring diagrams shown depict typicalcontrol functions. Refer to unit wiring label for specificfunctions.

Units may be equipped with line voltage controls or24 VAC control systems. The following descriptions are fortypical control sequences only. For detailed control operatingsequence, refer to thermostat operating instructions.STANDARD WIRING PACKAGES

Manual Fan Control -- On vertical cabinet units, a fan-speedswitch may be furnished unit-mounted and wired. See Fig. 73.On vertical furred-in units and horizontal units, the switch maybe shipped separately on a decorative wall plate for fieldmounting and wiring. See Fig. 74.

The standard switch has LOW, MEDIUM, HIGH and OFFpositions plus an auxiliary contact to energize thermostats,valves, dampers, etc.

NOTE: Wiring diagrams are for typical applications. If othervoltages for heaters or controls are specified, wiring may differfrom that shown. Refer to wiring diagram on unit blower hous-ing for unit specific wiring.

Thermostatic Electric Valve Control 2-Pipe -- A thermo-statically controlled 2-position valve provides superior controlto fan cycling. With this control, the fan runs continuously un-less it is manually switched to the OFF or AUTO position. Thefan must be on before the valve can be opened to supply waterto the coil.

This system can be used for normal 2-pipe changeover systemsand can also be furnished for cooling-only or heating-only ap-plications by omitting the changeover and specifying whichapplication is intended. See Fig. 75 and 76 for line voltage con-trol. See Fig. 77 and 78 for 24-v control. Wiring diagrams showtypical applications. Refer to wiring diagram on unit blowerhousing for unit specific wiring.

65

L RED

" _ H BLU/BLOWERF-

',,MOTO</H S,KCOP1

L RED

M BLUH BLK

WHTCOH

LZI I

L2 or N I_

EOUIPMENT(iROUND

EQUI PMENTGROUND

SERVICESWITCH _

(OPTIONAL) }_ _

208/240V

IF_4_ RE]} RE]}-- T,"_/ I.__ I, X BLU ]_LU

__ i!_ I, ]}LI< BLI<

I731 RED

_ RE]}

BLU

BLK

RE]}

FUSES

(OPTIONAL)

=@l@ BLK I_ BLK

1GROUND

_(REQUIRED OPTION W/O SER, SWITCH)

SWITCH

Fig. 73 -- No Controls -- UnitiMounted 3-Speed Switch Only

UNIT MOUNTEDJUNCTION BOX(ES)

SWITCH PLATE( 2 X 4 ) PACKAGE No, 70390001-07

4.

REMOTE DEVICE BOX14,5 IN3 MIN,

EQUIPMENT

GROUND

LI

L2 or N ......

NOTES:1. Motors are thermally protected.2. Use copper conductors only.3. See unit nameplate for power supply. Provided

disconnect means and overload protection asrequired.Unit-mounted thermostats are not recommended forfan control because of poor temperature sensing. Fancontrol not available on 42VC,VE lowboy units.

Fig. 74 -- No Controls -- WalliMounted 3-Speed Switch Only

66

A120-V WHT ALL OTHERS BLK

NEC CLASS 1 WIRING

_____L__R E_D........

............. -_>3>4_\MDTDR jH BLK I I.............

CDM t)L_

L RED

M_oL TO_/_M BLU

H BLKWHT

CDM

SERVICE

SWITCH 9.,....(OPTIONAL)

LI-- -i--O== =_---_ = =I

L2 or" N- _ff--o_--_--

| 208/240v

EQUIPMENT _ [ ONLYGROUND -- - .... ___.

EQUIPMENT

GROUND

RED

BLU

BLK

WHT÷

RED

BLU

BLK

WHT_

FUSES

(OPTIONAL)

-of'_

I._I_ I_ I_ I_b I_=I==

T÷156 _ N z E _ _ / iTISTAT I_

Li _ , __ ') 8 7 3

c x !

...... lI \

,,f ......

WHT_ ! WHT* [ (i(:-,_

GROUND(REQUIRED OPTION W/O SERVICE SWITCH)

RA SENSDRBLK

BLKRED I _ mT_'_-_

BLK r---1- --Z&--_LK--_ V A L V Eli

I IL___J

VALVE (DPTIDNAL)=

-FACTORY DR FIELD PROVIDED,

NOT TD EXCEED T'STAT RATING,

Fig. 75 -- 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling withAutomatic Changeover- Unit-Mounted Thermostat (Line Voltage)

RELAY COIL LETTER REFERS TO

RELAY P/N 706654-XX

VOLTS A B

24 Oi 06

120 02 07

208 03 08

240 04 09

277 05 10

L RED

CDM

A120-V Writ ALL OTHERS BLK

NEC CLASS 1 WIRING

L RED

CDM

SERVICE

SWITCH ?_(DPTIONAL)

L1 -- _ro===_--_====

L2 or N -- __==.M

EQUIPMENT 2os/24ovGROUND -- LnNLY_

EQUIPMENT

GROUND

WHT÷

RED

DLU

BLK

WHT_

FUSES

(OPTIpNAL _BLK

BLK

WHT_

GROUND

(REQUIRED OPTION W/O SERVICE SWITCH)

Fig. 76 -- 420,S,V and 42D (600-1000) 2-Pipe Heating and Cooling with Automatic Changeover-Remote/Wall-Mounted Thermostat (Line Voltage)

67

EQUIPMENT

GRDUND

PUR

YEL

CHANGE OVER SENSOR

_xc

I]

#it F------7F4]_B LK/ I

_$]__L_VALVEIL___J

Fig. 77 -- 42SG,SH,SJ,VA,VB,VF 2-Pipe Heating and Cooling with Automatic Changeover --Unit-Mounted Debonair ¢ Thermostat (24-v), Duct Sensor

REMOTE :DEVICE ]tDX x<I

NEC CLASS 2 WIRING

--_- I___E_L.

// \k M BLU

BLDWERT ....

_\MOTOR /_H_2L£_\ _ ____/_ _ _ aT

co_,

L RED

/'BLDWERT--

_ WHT

SERVICE coM

SWITCH (",_(OPTIONAL)) _

.._2___L__LI -- 4-0,-_11_--.

I

L£ or" N -- J--O, _----EQUIPMENT I _08/240V

_0UN_-.____-"_L_'_=___

-- ] RED

k#3_ ...... ]I I _LR I

I I WNT_ I I_>i>+...._,,K_J III

IIIIII

-,iL.L-II

_LIJ iI u

ILK !1

_WHT_FUSES

IGROUND

_ (OPTIONAL)

EQUIPMENT

GROUND

T' STAT

RS+5 RS R G Y1 G3 W! G2 C H20 CKI

o/c

_OR5 .

CHANGE OVER SENSOR

PUR

YEL

Fig. 78 -- 42C,S,V (except VG), and 42D (600-1000 cfm 2-Pipe Heating and Cooling withAutomatic Changeover -- Remote/Wall-Mounted Debonair e Thermostat (24-v)

Gic F------qF_]__ LkJ I

L] _-_-_Kq V#LVE IL___J

68

Thermostatic 2-Pipe Auxiliary. Electric Heat with ValveControl -- This system, also called twilight or intermediateseason electric heat, goes a long way towards solving thespring and fall control problems of 2-pipe systems.

Chilled water can be run late into the fall, turned on early inthe spring and heat will still be available to all units wheneverrequired.

In winter the system is switched over to hot water. Twochangeover devices are required for this. One device switchesthe action of the thermostat and the other locks out the electricheat when hot water is in the coil.

With this system, the fan runs continuously unless manuallyswitched to OFF or AUTO position. Fan must be on beforethermostat can send signal to open chilled water valve or turnon electric heater.

Two control methods are available:

1. Use the standard automatic changeover thermostat with adead band between heating and cooling.

2. Use a manual changeover thermostat. With this methodonly one changeover is required.

Be sure to include a 2-way or 3-way electric valve with thissystem.

NOTE: Wiring diagrams are for typical applications. If othervoltages for heaters or controls are specified, wiring may differfrom that shown. See Fig. 79 for line voltage control. SeeFig. 80 and 81 for 24-v control. Refer to wiring diagram onunit blower housing for unit specific wiring.

oREMOTE DEVICE BOX

UNITMOUNTED - - --I -- --I -----ffJ BOX _ I i i i

"\ I I I I

QUICK CONNECT , ; i [ I

OPTIONAL I

L RED _ RED

MOTORHBLK _) BLK

COM _) _W,T

EQUIPMENT @

GROUND

L2 or N

L1

LIM IT SWITCH

THERMOSTAT PART # 702893-36

If--- 1--i t

II

t II II II II II II Ii !

I i /I I

II

]

CONTACTOR *WHT

BLK _ BLK

*WHT

"1 rI II I

o

PUR / /\\

z

{(RED / /

\\BRN / /

b22J

I

I !

AQUASTATS

BLK _- ;E_BLU

BLK _-- ;E_RED (°_.BLU

VALV E

BLK F

IA WHT I I

i L----J i

/\L_

G) It- r-

z Io I ^i:_ ,, ONLY 120v WHT/ALL OTHERS BLK

, i zL---L--'-J

Fig. 79 -- 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling withAuxiliary Heat -- Remote/Wall-Mounted Thermostat (Line Voltage) and Dual Power Source

69

DUC_SENSOR33CSSENDS

c----q

VALVE

EQUIPMENT --

GROUND

L1 ----

L2orN

N

EQUIPMENT

GROUND

nEDWHrBLK

ORG

EBLK

-- -- BLK

WHT

RED _BLU m, ,[

_LK k_4J

BLK _

QUICK CONNECT

RED L

__BLUM BLOWER3LK H MOTOR

Fig. 80 -- 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Heating and Cooling with Auxiliary Heat --Unit-Mounted Debonair _ Thermostat (24-v), Duct Sensor and Dual Power Source

T' STAT

IRS+5 RS R G Y[ G3 _1 GE C HEO Cl<l

NEC CLASS 2 WIRING

L RED

__ J _HT

SERVICE CI]M

SWITCH 0,,_< I]PTII]NI_L) /_ _\

i

EQUIPHENT I _i]8/_40V

GRDUND-- --_&___:=EQUIPHENT

GIRFIUND

RED

I_LU

9LK

WHT_

( OPT] BNAL)

_ GRBUN]](REI]UIRED I]PTII]N W/I] SER, SWITCH)

_HT*

HT_

a/c r---_

YEL /I ITL_ VALVEIq

LIMIT gW_

BLK

__x____--q---_ /-_q

Fig. 81 -- 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Heating and Cooling withAuxiliary Heat -- Remote/Wall-Mounted Debonair ® Thermostat (24-v)

70

Thermostat 2-Pipe Total Electric Heat with Valve Con-trol -- With this system, the complete heating requirement forthe space is provided by the electric heater; the water system isnever changed over for heating. It is therefore possible, just aswith 4-pipe systems, to have heating or cooling at any thne ofthe year.

The fan runs continuously unless it is manually switched toOFF or AUTO position. Fan must be on before thermostat cansend signal to open chilled water valve or turn on electricheater.

Normally, an automatic changeover thermostat with a deadband between heating and cooling is used, but a manualchangeover thermostat is also suitable. A 2-way or 3-way valvemust also be used so that the chilled water is off whenever theheater is on. No changeover device to sense water temperatureis necessary.


REMOTE DEVICE BBX--_

QUICK

CONNECT-_

,,EF.,q_c_"

V L_I,I BLK_',; ,co:z_>im>I BRNE2Jm

SERVIOE%.SWITCHf ,_

LI - -- -_ -- =,_--",---!

LZ or N - -- 4= -J--,_-:I I_o8,24ov

EQUIPMENT _ L u_YGROUND -- -- .......

ORG PUR

T0THERMOSTAT PART # 702893-36

1 2 8 9

_WHT

RED ]BLU

BLK

CAPACITOR *VHT

/ *VHT r- .... 1

. _o_o"v_.LoNLY ._]

_Tm_> BLK F

. _ _ VALVEI=_ I LI _ BLK F - - -I

II I

CBNTACTBR l _R

Fig. 82 -- 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Cooling with Total Electric Heat --Remote/Wall-Mounted Thermostat (Line Voltage)

71

DUCTs_-Nsr,n _4_s>','_E'_

...........................................................BLK I/_ IBLK

--_ _ L _RE_D__

/I _'\ M BLU/ BLOWERT ....

I\MDTDR /LH_ BL_K_

"-_ _J_ _ _NT_ _CDM

L REn

\MOTO z 2:

(OPTIDNAL)c\SERVICESWITCH > \

L!-- __ _ _I_

L2 or N- _ ___I_

EOU IPMENT 20e/24ov

GROUND- _ I I]NLY ___ __

EQUIPMENT

GROUND

I---9 RED

t>_---,<)sTD_BL__I I BLI<_>p)---I I WHT÷

L_ .... "II

\

FUSES(OPTIONAL)

I

RS+5 RS R 0 Y2 G3 Wl G2 C H20 CKI

(OPTIONAL>

-- -- _ GROUNI}(REQUIRED W/O OPTIONAL SER, SWITCH>

<<__p

YELYEL

Yj_L

_CBN_ i WHT÷

Iz - __I-L .........

WHT_

Q/c F - - --9

E_ WLVElL___J

NOTE: Units may have 2 or 4elements. Elements wired inparallel.

WHT_ LIMIT SW

F ............. ]_LK

iI r BLK1 tt IL. 1

I 1 r---:--I,.-4--- ,_ "_ I_LK I J

l t WriT÷ I / \ ./ I1 ,="..... L--J J

I I i ........I I I il I I I LIMIT SW_

I I I _ ]_LK II_ _l_ _ _j _ ..... _,._ _ _ _._4_ H_7

L_I-_....... W_.2:J___JII I I L-b_" ^ A ^ ^ _-JI I L_:i vvvvv

1 \ / I

Fig. 83 -- 42SG,SH,SJ,VA,VB,VC,VE,VF 2-Pipe Cooling with Total Electric Heat --Unit-Mounted Debonair e Thermostat (24-v) and Duct Sensor

REMOTEDEVICEBOX_\\\\

VALVE

E%;_ggT--

L1 --

L2orN -- _ =

LI -- --

N

EQUIPMENT --

GROUND

YEL

lTHERMOSTAT #33CSSN2-FC

IRS+5 RS R G Y1 G3 Wl G2 C H20 CK1

I I I I I--I NECCLASS2WIRING

33ZCRLYBRD 0

0 _ FAN

(VALVE)

....LOW

©

/FRpn r'_

I:_< i

*WHI i, i

©

I

Q

BLK

"WHT

QUICK CONNECT/

RED L

BLU M BLOWER

BLK H MOTOR

LIMIT SWITCH

BL I .... I

Fig. 84 -- 42C,S,V (except VG), and 42D (600-1000 cfm) 2-Pipe Cooling with Total Electric Heat --Remote/Wall-Mounted Debonair e Thermostat (24-v) and Dual Power Source

?2

Thermostatic Valve Control. 4-Pipe -- The 4-pipe systemprovides the ultimate in economy and room temperature con-trol. Both hot water and chilled water are available at any time.

Normally an automatic changeover thermostat is used, but amanual changeover thermostat is also suitable. Two 2-wayvalves, two 3-way valves, or one 2-way plus one 3-way valvemust be selected. An automatic changeover device to sensewater temperature is not required.

With this system, the fan runs continuously unless it ismanually switched to OFF/AUTO position. Fan must be on be-fore thermostat can send signal to open the chilled water or hotwater valve.


REMOTE DEVICE BOX_

\

UNIT MOUNTEDJ Box __i i l l! ! ! !

-i I- l

i

THERHOSTAT PART # 702893-36

t I- T

QUICK CONNECTOPTIONAL

L REB

L2 or N----

L1

EQUIPNENT ....

GRDUNB

4 REB

3 BLU

2 BLK

I _/HT

cIImIJ

=..._

_WHT

Z

=ii

Q/C

A ONLY 120V WHT/ALLOTHERS BLK

VALVE

BLK r "3i

_wH__CDOL i

/\

L3

Fig. 85 -- 42C,S,V (except VG), and 42D (600-1000 cfm) 4-Pipe Heating and Cooling --Remote/Wall-Mounted Thermostat (Line Voltage)

73

F-7<OPTIONAL) I 4 1

L£JCT SENSOR

( I---,....... i

RED I _,)_ RED/ _ - _ .5/! .......

/ WHT I I_---4_+ .........", BL K I I I ......

III

L:L_ .... L__REj__

/ \ M BLU

I BLI3WERT ....

LMDTDR /LH- 2L£_

"..j J_ _ 2_H_T_ _CBM

L RED

,/ _HT

SERVICE CaM

SWITCH O,

<OPTIONAL) _ _\_t L__

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T'STAT

RS+5 RS R G YI GS WI G2 C H20 CK!

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GROUND (REQUIRED OPTION W/O SER, SWITCH)

G

YEL

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Fig. 86 -- 42SG,SH,SJ,VA,VB,VC,VE,VF 4-Pipe Heating and Cooling --Unit-Mounted Debonair ® Thermostat (24-v) and Duct Sensor

BRN

YEL

YEL

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:E__4J-S--LKq VALVE

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REMOTE DEVICE BOX --

VALVE

VALVE

EQUIPMENT--GROUND

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Fig. 87 -- 42C,S,V (except VG), and 42D (600-1000 cfm) 4-Pipe Heating and Cooling --Remote/Wall-Mounted Debonair e Thermostat (24-v)

?4

Step 4 E Make Duct Connections E Install allductwork to and from unit in accordance with proiect plans,specifications, and all applicable codes. Duct construction mustallow unit to operate within duct external static pressure lhnitsas shown on job submittals. Units designed to operate withductwork may be damaged if operated without intended duct-work attached.

Units provided with outside air should have some methodof low-temperature protection to prevent freeze-up. This pro-tection may be any of several methods, such as a low tempera-rare thermostat to close the outside air damper or a preheat coilto temper the outside air before it reaches the unit. It should benoted that none of these methods will adequately protect thecoil in the event of power failure. The safest method of freezeprotection is to use glycol in the proper percent solution for thecoldest expected air temperature.

Insulate ductwork as required. Use flexible connections tominimize duct-to-unit aligmnent problems and noise transmis-sion where specified.

Set unit markings for minimum clearance to combustiblematerials and first 3 ft of ductwork. Install ductwork, accessorygrilles and plenums so that they do not restrict access to filter.The manufacturer assumes no responsibility for undesirablesystem operation due to improper system design, equipment orcomponent selection, and/or installation of ductwork, grilles,and other related components.

Prevent dust and debris fvm settling in unit. If wall finishor color is to be spray applied, cover all openings to pre-vent sprayfvm entering unit. Failure to do so could resultin the reduction of unit efficiency.

Step 5 _ Frame and Finish Unit _ Models 42SG,SH, SJ, SU and SM have factory enclosures and may be fin-ished with normally accepted wall covering. However, drywallsecured with adhesive bonding alone is not recolmnended.

The 42S units are designed to have gypsum board or othertypes of wall board applied directly to the unit cabinet surfaceto a maximum combined thickness of 5/s-inch. Use low-pro-file sheet metal panhead screws to secure wallboard to unitframe. Fasteners may penetrate the cabinet no more than 1/2inch.

These fasteners must be located to avoid damage to internalcomponents and wiring in the same manner as anchoring fas-teners. Do not apply sheet metal screw or nails where they canpenetrate coil, riser pipes, or electrical junction box and race-ways.

Do not secure wallboard to drain pan edges or to controlbox enclosure. Condensate leaks or electrical shorts may result.

An alternate method of enclosing the unit is to frame one ormore sides with studding and apply the wall board to this fraln-ing. This method requires specific unit features and return ac-cess panels when used on the return-air side of a unit. Units notproperly equipped will exhibit poor cooling and/or heating per-formance and could experience excessive or premature compo-nent failures.

Prevent sheetrock dust or other debris from settling on coilfins, motor-blower assembly or other unit interior surfaces.

Return access and exposed cabinet units may be furnishedwith a baked enamel finish. Small scratches in this finish maybe repaired with touch-up paint available from the factory.Some colors of touch-up paint are available in aerosol contain-ers and all touch-up paint is available in pint, quart, and gallonCallS.

Proper safety procedures should be followed regardingventilation and safety equipment during touch-up andrepainting. The manufacturer's directions should be fol-lowed for the products being used.

To repaint the factory-baked enamel, the finish should beprepared by light sanding with no. 280 grit sand paper orno. 000 or no. 0000 fine steel wool. The surface may also bewiped with a liquid surface etch cleaning product such as "NoSand" or "Pasceo." These items should be available at most

paint product stores. It should be noted that the more conscien-tiously this preparation is done, the more effective it will be.

After this preparation is accomplished, the factory finishshould provide excellent adhesion for a variety of air-dried topcoats. Enamel will give a more durable, higher gloss finish,while latex will not adhere as well and will give a dull, softerfinish. Top coats involving an exothermic chemical process be-tween two components, such as epoxies and urethanes, shouldbe avoided.

Factory aerosol touch-up paint may require a number oflight "dust coats" to isolate the factory-baked enamel finishfrom the quick drying touch-up paint.

Step 6 -- Cut Out Openings for Grilles andThermostats _ On all units with optional supply-air orreturn-air grilles, dampers, thermostats, and switch plates, cutout openings where specified on the job plans. Be careful not tocut wires, piping or structural supports.

For remote-mounted thermostats use a steel thermostat

shield ring to protect drywall from thermostat wiring whereapplicable.

If not included on the unit or furnished from the factory,supply and return grilles should be provided as recolrnnendedin the product catalog.

Step 7 _ Make Final Preparations

1. Turn offpower to the unit (open unit electrical disconnect).

2. Install thermostats and perform any other final wiring asapplicable. Check the unit for any loose wires.

3. Perform a final visual inspection. All equipment, ple-nums, ductwork, and piping should be inspected to verifythat all systems are complete and properly installed andmounted, and that no debris or foreign articles such as pa-per or drink cans are left in the units or other areas. Cleandirt, dust, and other construction debris from unit interior.Be sure to check fan wheel and housing.

4. Rotate fan wheel by hand to be sure it is free and does notmb housing. Check that wing nuts securing fan assemblyto fan deck are tight.

5. Ensure all panels and filters are installed before checkingfan operation. Turn on power to the unit.

6. Install filter in frame at front of coil. If field-suppliedfilters are used, be sure size is as specified in Tables 1-4.

IMPORTANT: Do not start up or operate unit withoutfilter. Be sure filter and unit interior are clean. Failure to

do so could result in damage to the equipment or build-ing and furnishings and/or void all manufacturer'swarranties.

7. ECM (Electronically Colmnutated) Blower:

If the unit is equipped with an ECM blower, additionalsteps may be required during the air balancing process.The ECM blower is controlled by one of three controlboards, depending on the options ordered with the unit.

75

8.

9.

10.

Review prqject submittals or order acknowledgement todetermine which ECM control scheme the unit has. Alter-natively, match the control board to the illustrations iden-tified in the Control Board Type section.

Check the fan and motor operation.

Be sure dram line is properly and securely positioned andthat the line is clear. Pour water into drain to checkoperation.

Prior to the water system start-up and balancing, thechilled/hot water systems should be flushed to clean outdirt and debris which may have collected in the pipingduring construction. During this procedure, the systemshould be flushed from the supply riser to the return riserthrough a cross-over loop at the end of the riser column,and all unit service valves must be in the closed position.This prevents foreign matter from entering the unit andclogging the valves and metering devices. Strainersshould be installed in the piping mains to prevent this ma-terial from entering the units during normal operation.Vent all air from unit coil and related piping. Air ventingfrom the unit is accomplished by the use of the standardmanual air vent fitting, or the optional automatic air ventfitting installed on the coil. Venting can be accomplishedby depressing the needle valve core. Automatic air ventsmay be unscrewed one turn counterclockwise to speedinitial venting, but should be screwed in for automaticventing after start-up operations. When steady steam ofwater begins to escape, close valve. Vent release air slow-ly, usually dripping water into drain pan in the process.

Make sure all service valves are open and that the motor-ized control valves, if supplied, are set for automaticoperation.

The air vent provided on the unit is not intended to replacethe mare system air vents and may not release air trappedin other parts of the system. Inspect the entire system forpotential air traps and vent those areas as required, rode-pendently. In addition, some systems may require repeatedventing over a period of thne to properly eliminate air fromthe system.

11. Check all control valves in the system for proper opera-tion m accordance with valve manufacturer's instructions.

12. For units with factory-installed ball valves with lever han-dles -- When handle is perpendicular to valve body, thereis no flow through valve. Ball valves may be used asshutoffvalves.

CONTROL BOARD TYPE (See Fig. 88) -- The unit hasbeen factory configured to produce PSC equivalent airflow onhigh speed, with medium and low speed set at 80% and 60% ofhigh, respectively. If these setting are acceptable, then no fur-ther configuring is required.

To adjust airflow, relocate board mounted jumpers as indi-cated on configuration chart. Chart is located on control boxcover.

O

W/W1 Y/Y_ Yi

+ IIII IIII- Fig. 88 -- ECM dumper Speed Board

Both of the procedures described below require the controlbox to be powered while adjustments are made. Line volt-age components are concealed behind a secondary cover.However, installer should still take all reasonable precau-tions.

RHEOSTAT (See Fig. 89) -- The unit has been factory con-figured to produce PSC equivalent airflow on high speed, withmedium and low speed set at 80% and 60% of high, respective-ly. If these setting are acceptable, then no further configuring isrequired. Board mounted rheostats are provided to adjust theairflow pertaining to each output. Each output can be adjustedfrom 0 to 100% of the motor's factory progralmned operatingrange. To set airflow, connect a volt-meter between "co_mnon"(near the red status LED) and Flol through Flo4.

COMMON FL01 FL02 FL03 FL04

Fig. 89 -- ECM Rheostat Speed Board

Carrier's convention is to preset and wire Flol for highspeed, Flo2 for medmm, and Flo3 for low. Flo4 is not usedwith any standard thermostat, but may be employed for a moreadvanced application. The chart on the control box cover asso-ciates airflow rates with the voltage indicated on your volt-me-ter. For each speed, adjust the rheostat until indicated voltagematches the desired value from the airflow table.

76

If a factoryprovidedthermostatorDDC(DirectDigitalControls)controllerisutilized,thentheunitisalreadycorrectlyconfigured.A fieldfurnishedthermostatorcontrolmayrequireadjustlnentofboardjulnpers.PROPORTIONAL(SeeFig.90)-- Carrierrecolmnendsus-ingthespecifiedthermostatorDDCcontrollertocolnmissiontheunitwheneverpossible.However,theblowercanbestartedandoperatedwithoutthethermostat.Todoso,locatetheair-flowadjustlnentscrewwhichisaccessiblefromtheinsideofthecontrolbox.Withserviceswitchinthe"ON"position,turntheadjustlnentscrew.Theunithasnowbeenplacedinmanualovemde.Manualovemdewillexpirewhenoneof the follow-ing conditions is satisfied:

• Power to the unit is cycled• 15 minutes elapses with no change to adjustlnent screw• Unit receives a control signal from the thermostat or

controller

C2

COARSE

_AN O-10V

R4 J7

U3

C5 R6

¢¢:

R15

METER COM

Fig. 90- ECM Proportional Speed Board

START-UP

Before beginning any start-up operation, the start-up per-sonnel should familiarize themselves with the unit, options andaccessories, and control sequence to understand the proper sys-tem operation. All personnel should have a good workingknowledge of general start-up procedures and have the appro-priate start-up and balancing guides available for consultation.

The building must be completely finished including doors,windows, and insulation. All internal walls and doors shouldbe in place and in the normal position. In some cases, the inte-rior decorations and furniture may influence overall systemperformance. Then entire building should be as complete aspossible before beginning any system balancing.

Except as required during start-up and balancing operations,no fan coil units should be operated without all the proper duc-twork attached, supply and return grilles in place, and all accessdoors and panels in place and secure.

Start-up procedures vary depending on thne of year (sum-mer or winter) and building characteristics (new building/oldbuilding, occupied/unoccupied, etc.)

Start-up in the cooling mode requires that proper care begiven to avoid condensation problems. Condensation forms onsurfaces that are colder than the dew point of the surroundingair. Ifa unit is started and is piped with low-temperature chilledwater in a hot, humid atmosphere, condensation will form on

many parts of the unit. In order to avoid excessive condensa-tion, higher temperature water should initially be used (approx-imately 65 to 70 F) and set the fan coil control at low or medi-um fan speed. Be sure the fan current does not exceed motornameplate values. Also, outside air supply fans, and bathroomand kitchen exhaust fans should be off.

As the building temperature drops, the chilled water temper-amre can be gradually reduced until it reaches 50 E At thispoint the outside air fans can be turned on. When the chilledwater temperature is reduced to its design point, the exhaustfans can be turned on.

Air System Balancing -- All duct stubs, grilles, filters,and return-access panels must be properly installed to establishactual system operating conditions BEFORE beginning air bal-ancing operations.

Each individual unit and the attached ductwork is a uniquesystem with its own operating characteristics. For this reason,air balancing is normally done by balance specialists who arefamiliar with all procedures required to properly establish airdistribution and fan-system operating conditions. These proce-dures should not be attempted by unqualified personnel.

Units with no ductwork have air volumes predetermined atthe factory by supply grille size and normally do not require airbalancing other than selecting the desired fan speed. Units fur-nished with optional dampers on supply grilles may requiresome small adjustments to "fine rune" the air delivery to eachgrille. Opposed blade balancing dampers are not available forall grilles on a unit with electric heat.

After proper system operation is established, the actual unitair delivery and the actual fan motor amperage draw for eachunit should be recorded in a convenient place for furore refer-ence.

Water System Balancing -- A complete knowledgeof the hydronic system, along with its components and con-trols, is essential to proper water system balancing. This proce-dure should not be attempted by unqualified personnel. Thesystem must be complete, and all components must be in oper-ating condition BEFORE beginning water system balancingoperations.

Each hydronic system has different operating characteristicsdepending on the devices and controls used in the system. Theactual balancing technique may vary from one system toanother.

After the proper system operation is established, the appro-priate system operating conditions such as various water tem-peratures and flow rates should be recorded in a convenientplace for furore reference.

Before and during water system balancing, conditions mayexist due to incorrect system pressures which may result in no-ticeable water noise or undesired valve operation. After the en-tire system is balanced, these conditions will not exist on prop-erly designed systems.

Controls Operation _ Before proper control operationcan be verified, all other systems must be operating properly.The correct water and air temperatures must be present for thecontrol function being tested. Some controls and features aredesigned to not operate under certain conditions. For example,on a two.pipe cooling/heating system with auxiliary electricheat, the electric heater cannot be energized with hot water inthe system.

A wide range of controls, electrical options and accessoriesmay be used with the equipment covered in this manual. Con-sult the approved unit submittals, order acknowledgements,and other literature for detailed information regarding each in-dividual unit and its controls. Since controls and features mayvary from one unit to another, care should be taken to identifythe controls used on each unit and their proper control

77

sequence.Informationprovidedbycomponentmanufacturersregardinginstallation,operation,andmaintenanceoftheirindi-vidualcontrolsisavailableuponrequest.

Whenchangingfromonemodetoanother(coolingtoheat-ingorheatingtocooling),itmaytakesomethnetoactuallyno-ticeachangein theleavingairtemperature.Inaddition,someunitsmaybedesignedforaverylowairtemperatureriseinheating.Beforedeclaringaunitinoperativeoracomponentdefective,it maybenecessarytoverifyoperationbymorethanonemethod.

SERVICE

Excessive Condensation on Unit -- Running chilledwater through a fan coil unit with the unit fan off can causeexcessive condensation. If fan cycling is used, a water flowcontrol valve should be installed to shutoff the water when the

fan stops.

Other methods of control, which avoids condensation prob-lems, are as follows:

1. Continuous fan operation with motorized chilled watervalve controlled by a thermostat.

2. Continuous fan operation with thermostat control toswitch fan from high to low speed (instead ofot_.

To Clean Coil

1. Be sure electrical service switch is open, locked, andtagged while working on unit.

2. Remove return-air grille access panel and brush betweencoil fins with stiffwire brush. Care should be taken to not

damage coil fins. Follow-up by cleaning with vacuumcleaner. If coil is cleaned with air hose and nozzle, takecare not to drive dirt and dust into other components.Blow air through the coil fins from the leaving air face.This should again be followed by vacuuming. Units pro-vided with the proper type of air filters, replaced regular-ly, will require less frequent coil cleaning.

3. Install clean filter. Refer to Clean or Replace Air Filterssection.

Coil Air Vent (Manual or Automatic) -- Turn ventcap clockwise (closed) while filling system; turn counterclock-wise (open) to vent air. Tighten clockwise after venting. Turnautomatic vent cap slightly counterclockwise until water leaksat about 10 drops per minute. Leak will stop within one-halfminute.

Check Drain -- Lock open and tag unit electrical serviceswitch.

Check drain pan, drain line and trap before initial start-upand at start of each cooling season. A standard type pipe clean-er for 3/4-in. ID pipe can be used to ensure that pipe is clear ofobstruction so that condensate is carried away. Check the drainline at filter cleaning time during the cooling season. Be surethat debris has not fallen into unit through supply-air grille.Should the growth of algae and/or bacteria be a concern, con-sult an air conditioning and refrigeration supply organizationfamiliar with local conditions for chemicals or other solutions

available to control these agents.

Fan Motor Bearings -- Lock open and tag unit electri-cal service switch.

Standard motors are permanently sealed and lubricated. Nolubrication is required unless special motors have beensupplied or unusual operating conditions exist.

Clean Fan Wheel -- Lock open and tag unit electricalservice switch.

For access to fan assembly, remove front or bottom panel.Fan assembly may be removed from its tracks if unit has a long

conduit lead. Dirt and debris should not be allowed to accumu-late on the blower wheel or housing. This can result in an un-balanced blower wheel condition which can damage a blowerwheel or motor. The wheel and housing may be cleaned peri-odically using a vacuum cleaner and a brush, taking care not todislodge the factory balancing weights on the blower wheelblades.

Clean Electric Heater -- Lock open and tag unit elec-trical service switch.

1.

2.

3.

Remove dust, dirt, or foreign material before start-up. Donot block normal airflow to and from units; blockage maydamage electric heaters.Clean heater elements with soft brush or vacuum cleaner

as necessary.

To replace blown fusible links (nichrome heaters only):

a. Remove fan deck (horizontal units only) foraccess to heater.

b. Remove nut securing link at each end; install newlink; reinstall nuts.

c. Reinstall fan deck (if removed).

Electric resistance heaters typically require no normal peri-odic maintenance when unit air filters are changed properly.The operation and service life may be affected by other condi-tions and equipment in the system. The two most hnportant op-erating conditions for an electric heater are proper airflow andproper supply voltage. High supply voltage and/or poorly dis-tributed or insufficient airflow over the element will result in

element overheating. This condition may result in the heatercycling on the high-limit thermal cutout. The high-limit ther-mal cutout device is a safety device only and is not intended forcontinuous operation. With proper unit application and opera-tion, the high-limit thermal cutout will not operate. This deviceonly operates when a problem exists, and ANY condition thatcauses high-limit cutout MUST be corrected ilmnediately.High supply voltage also causes excessive amperage draw andmay trip the circuit breaker or blow the fuses on the incomingpower supply.

After proper airflow and supply power are assured, regularfilter maintenance is important to provide clean air over theheater. Dirt that is allowed to deposit on the heating elementwill cause hot spots and eventual element burn through. Thesehot spots will normally not be enough to trip the high-lhnitthermal cutout device and may not be evident until actual heat-er element failure.

Clean or Replace Air Filters -- Lock open and tagunit electrical service switch.

At the start of each cooling season and after each month ofoperation (more or less depending on operating conditions) re-place throwaway filter or clean permanent filter.

THROWAWAY FILTER--The type of throwaway filtermost COlrunonly used on fan coil units should be replaced on aregular basis. The thne interval between each replacementshould be established based on regular inspection of the filterand should be recorded in the log for each unit. Replace filterwith a good quality filter of the size shown in Tables 1-4. Donot attempt to clean and reuse disposable filters. If the replace-ment filters are not purchased from the factory, the filters usedshould be the same type and size as those furnished from orrecolmnended by the factory. Consult the factory for applica-tions using filter types other than the factory standard oroptional product. Filters with high are pressure drops are gen-erally not compatible with the fan coil units in this manual.

PERMANENT FILTER -- A maintenance schedule for per-manent filters should be developed in the same manner asthrowaway filters. Unlike throwaway filters, permanent filtersmay be cleaned and re-installed in the unit instead of being dis-carded when dirty.

78

1. Taponsolidsurfacetodislodgeheavyparticles.2. Washmhotwater.If needed,usemildsolutionofcom-

mercialsolventsuchassalsodaortrisodiumphosphate.3. Setfilteronendsothatwaterdramsoutthroughslotsin

frame.Allowfiltertodrythoroughly.

4. Recharge filter with Film-Cor or shnilar recharging oil.Three ounces is sufficient for medium size filter. Oil maybe applied by insect spray gun. For easier spraying, the oilcan be warmed.

If the filter is dipped in the recharging oil, remove it hn-mediately and allow draining through slots in frame.

5. Replace filter in unit.

If another type of filter is used, follow the filter manufacturer'sinstructions.

Electrical Wiring and Controls E The electricaloperation of each unit is determined by the components andwiring of the unit. This may vary from unit to unit. Consult thewiring diagram attached to the unit for the actual type andnumber of controls provided on each unit.

The integrity of all electrical connections should be verifiedat least twice during the first year of operation. Afterwards, allcontrols should be respected regularly for proper operation.Some components may experience erratic operation or failuredue to age. Wall thermostats may also become clogged withdust and lint and should be periodically inspected and cleanedto provide reliable operation.

When replacing any components such as fuses, contractors,or relays, use only the exact type, size and voltage componentas furnished from the factory. Any deviation without factoryauthorization could result m personal injury or damage to theunit. This will also void all factory warranties. All repair workshould be done in such a manner as to maintain the equipmentin compliance with governing codes, ordinances and testingagency listings.

More specific information regarding the use and operatingcharacteristics of the standard controls offered by the manufac-turer are contained in other manuals.

Valves and Piping E No formal maintenance is re-quired on the valve-package components most colranonly usedwith fan coil units other than a visual inspection for possibleleaks in the course of other normal periodic maintenance. In theevent that a valve should need replacement, the same precau-tions taken during the initial installation to protect the valvepackage from excessive heat should also be used during re-placement.

Warranty -- All equipment and components sold throughthe Parts Department are warranted under the same conditionsas the standard manufacturer's warranty with the exception thatthe warranty period is thirty (30) days unless the component isfurnished as a warranty replacement. Parts furnished as war-ranty replacements are warranted for the remaining term of theoriginal unit warranty or not less than thirty (30) days.

79

Copyright 2012 Carrier Corporation


Catalog No. 04-53420007-01 Printed in U.S.A. Form 42-4Sl Pg 82 2-12 Replaces: 42-3Sl

START-UP CHECKLIST FOR 420,D,S,V SERIES FAN COIL AIR CONDITIONERS

I. Project Information

Job Name

Address

city State Zip

Installing Contractor

Sales Office

Start-up Performed By

INSPECTION, INSTALLATION,ITEM I COMPLETEReceiving & Inspection

1. Unit received undamaged

2. Unit received complete as ordered

3. "Furnish only" parts accounted for

4. Unit arrangement/hand correct

5. Unit structural support complete and correct

Handling & Installation

6. Mounting grommets/isolators used

7. Unit mounted level and square

8. Proper access provided for unit and accessories

9. Proper electrical service provided

10. Proper overcurrent protection provided

11. Proper service switch/disconnect provided

12. Proper chilled water line size to unit

13. Proper hot water line size to unit

14. Proper refrigerant line sizes to unit

15. Proper steam line sizes to unit

16. Proper steam condensate trap on return line

17. Proper steam supply pressure to unit (10 psi max)

18. All service to unit in code compliance

19. All shipping screws and braces removed

20. Unit protected from dirt and foreign matter

Cooling/Heating Connections

21. Protect valve package components from heat

22. Mount valve packages

23. Connect field piping to unit

24. Pressure test all piping for leaks

25. Install drain line and traps as required

26. Insulate all piping as required

27. Install drip lip under piping as required28. Connect risers from 42SGM to 42SGS models

29. Connect risers to unit coil valve package (if risersare shipped/installed separately)Ductwork Connections

30. Install ductwork, fittings, and grilles as required31. Flexible duct connections at unit

32. Proper supply and return grille type and size used

33. Control outside air for freeze protection

34. Insulate all ductwork as required

AND START-UP CHECKLISTITEM

Electrical Connections

35. Refer to unit wiring diagram

36. Connection incoming power service(s)

37. Install and connect "furnish only" parts

38. All field wiring in code compliance

Unit Start-Up

39. General visual unit and system inspection

40. Check for proper fan rotation

41. Record electrical supply voltage

42. Record ambient temperatures

43. Check all wiring for secure connections44. Close all unit isolation valves

45. Flush water systems

46. Fill systems with water/refrigerant

47. Vent water systems as required

48. All ductwork and grilles in place

49. All unit panels and filters in place

50. Start fans, pumps, chillers, etc.51. Check for overload condition of all units

52. Check all ductwork and units for air leaks

53. Balance air systems as required

54. Record all final settings for future use

55. Check piping and ductwork for vibration

56. Check all dampers for proper operation

57. Verify proper cooling operation

58. Verify proper heating operation

59. Reinstall all covers and access panels

60. Verify proper condensate drainage

I COMPLETE


Catalog No. 04-53420007-01 Printed in U.S.A. Form 42-4SI CL-1 2-12 Replaces: 42-3SI

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MODELNUMBER SERIAL NUMBER

QTY

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42 Series Fan Coil Air Conditioner Maintenance Data LogFAN AND MOTOR COOLING

FILTER EAT E T PD TOTAL SENSIBLE EAT

CFM ESP WATTs TYPE db/WboF W GPM H20 BTUH BTUH db/WboFGPM

HEATING

PD STEAM

H20 PSI

NOTE: Indicate repairs made, refrigerant added or removed (include amounts), field controls and valve packages added.

BTUH kW VOLTAGE

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

· 42C,D,S,V Series Fan Coil Air Conditioners Installation, Start-Up and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS ...................... 1 INTRODUCTION

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