-
SAFETY WARNINGOnly qualified personnel should install and
service the equipment.The installation, starting up, andservicing
of heating, ventilating, and air-conditioning equipment can be
hazardous and requires specificknowledge and training. Improperly
installed, adjusted or altered equipment by an unqualified person
couldresult in death or serious injury. When working on the
equipment, observe all precautions in the literatureand on the
tags, stickers, and labels that are attached to the equipment.
Air Heating and Cooling Coils
March 2013 COIL-SVX01B-EN
Installation, Operation,and Maintenance
-
Warnings, Cautions and NoticesWarnings, Cautions and Notices.
Note thatwarnings,cautions and notices appear at appropriate
intervalsthroughout this manual. Warnings are provide to
alertinstalling contractors to potential hazards that could
resultin death or personal injury. Cautions are designed to
alertpersonnel to hazardous situations that could result inpersonal
injury, while notices indicate a situation thatcould result in
equipment or property-damage-onlyaccidents.
Your personal safety and the proper operation of thismachine
depend upon the strict observance of theseprecautions.
Read this manual thoroughly before operating or servicingthis
unit.
ImportantEnvironmental Concerns!Scientific research has shown
that certain man-madechemicals can affect the earth’s naturally
occurringstratospheric ozone layer when released to theatmosphere.
In particular, several of the identifiedchemicals that may affect
the ozone layer are refrigerantsthat contain Chlorine, Fluorine and
Carbon (CFCs) andthose containing Hydrogen, Chlorine, Fluorine
andCarbon (HCFCs). Not all refrigerants containing thesecompounds
have the same potential impact to theenvironment.Trane advocates
the responsible handling ofall refrigerants-including industry
replacements for CFCssuch as HCFCs and HFCs.
Responsible Refrigerant Practices!Trane believes that
responsible refrigerant practices areimportant to the environment,
our customers, and the airconditioning industry. All technicians
who handlerefrigerants must be certified.The Federal Clean Air
Act(Section 608) sets forth the requirements for
handling,reclaiming, recovering and recycling of
certainrefrigerants and the equipment that is used in theseservice
procedures. In addition, some states ormunicipalities may have
additional requirements that
must also be adhered to for responsible management
ofrefrigerants. Know the applicable laws and follow them.
Revision Summary
COIL-SVX01B-EN. Added factory warranty information.
COIL-SVX01A-EN (20 Feb 2013). Clarified Supersedeinformation on
back cover.
COIL-SVX01A-EN (07 Sep 2012). New document.Supersedes COIL-IM-1A
(01 Jan 1985), COIL-IM-2B (01 Aug1986), COIL-IM-3A (01 Jan
1985).
ATTENTION: Warnings, Cautions and Notices appear atappropriate
sections throughout this literature. Readthese carefully:
WARNING Indicates a potentially hazardoussituation which, if not
avoided, couldresult in death or serious injury.
CAUTIONs Indicates a potentially hazardoussituation which, if
not avoided, couldresult in minor or moderate injury. Itcould also
be used to alert againstunsafe practices.
NOTICE: Indicates a situation that could result inequipment or
property-damage only
WARNINGProper Field Wiring and GroundingRequired!All field
wiring MUST be performed by qualifiedpersonnel. Improperly
installed and grounded fieldwiring poses FIRE and ELECTROCUTION
hazards.Toavoid these hazards, you MUST follow requirements
forfield wiring installation and grounding as described inNEC and
your local/state electrical codes. Failure tofollow code could
result in death or serious injury.
WARNINGPersonal Protective Equipment
(PPE)Required!Installing/servicing this unit could result in
exposure toelectrical, mechanical and chemical hazards.
• Before installing/servicing this unit, techniciansMUST put on
all Personal Protective Equipment (PPE)recommended for the work
being undertaken.ALWAYS refer to appropriate MSDS sheets and
OSHAguidelines for proper PPE.
• When working with or around hazardous chemicals,ALWAYS refer
to the appropriate MSDS sheets andOSHA guidelines for information
on allowablepersonal exposure levels, proper respiratoryprotection
and handling recommendations.
• If there is a risk of arc or flash, technicians MUST puton all
Personal Protective Equipment (PPE) inaccordance with NFPA 70E or
other country-specificrequirements for arc flash protection, PRIOR
toservicing the unit.
Failure to follow recommendations could result in deathor
serious injury.
© 2013Trane All rights reserved COIL-SVX01B-EN
-
Warnings, Cautions and Notices
TrademarksCompleteCoat, Delta-Flow, Prima-Flo,
Sigma-Flo,Traneand theTrane logo are trademarks or
registeredtrademarks ofTrane in the United States and
othercountries.Trane is a business of Ingersoll Rand. Alltrademarks
referenced in this document are thetrademarks of their respective
owners.
COIL-SVX01B-EN 3
-
4 COIL-SVX01B-EN
Table of Contents
Model Number Descriptions . . . . . . . . . . . . . . 5
General Information . . . . . . . . . . . . . . . . . . . . .
6Shipping and Receiving . . . . . . . . . . . . . . . . 6
Coil Information . . . . . . . . . . . . . . . . . . . . . . .
6
Applications . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 9Water Coils . . . . . . . . . . . . . . . . . . . . . . .
. . . . 9
Refrigerant Coils . . . . . . . . . . . . . . . . . . . . 10
Coil Piping and Connections . . . . . . . . . . . . . 11General
Recommendations . . . . . . . . . . . . 11
Drain Pan Trapping . . . . . . . . . . . . . . . . . . . 11
Steam Coil Piping . . . . . . . . . . . . . . . . . . . . .
11
Water Coil Piping . . . . . . . . . . . . . . . . . . . . .
13
Refrigerant Coil Piping . . . . . . . . . . . . . . . . 14
Liquid Lines . . . . . . . . . . . . . . . . . . . . . . . . . .
15
Line Sizing . . . . . . . . . . . . . . . . . . . . . . . . .
15
Insulation . . . . . . . . . . . . . . . . . . . . . . . . .
15
Components . . . . . . . . . . . . . . . . . . . . . . . 15
Suction Lines . . . . . . . . . . . . . . . . . . . . . . . .
16
Line sizing . . . . . . . . . . . . . . . . . . . . . . . . .
16
Routing . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
Insulation . . . . . . . . . . . . . . . . . . . . . . . . .
16
Components . . . . . . . . . . . . . . . . . . . . . . . 16
Refrigerant Charging . . . . . . . . . . . . . . . . . . 17
Installation Checklist . . . . . . . . . . . . . . . . . .
17
Coil identification . . . . . . . . . . . . . . . . . . . 17
Examples of Field-Installed Evaporator
Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 17
Single-Circuit Condensing Unit:Evaporator Coil with One
Distributor . . . 17
Single-Circuit Condensing Unit:Evaporator Coil with Two
Distributors . . 18
Single-Circuit Condensing Unit:Evaporator Coil with Four
Distributors . . 18
Dual-Circuit Condensing Unit:Evaporator Coil with Two
Distributors . . 19
Dual-Circuit Condensing Unit:Evaporator Coil with Four
Distributors . . 19
Dual-Circuit Condensing Unit:Evaporator Coil with Eight
Distributors . 20
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .
. .21Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . .
.21
Fin Straightening . . . . . . . . . . . . . . . . . . . . .
.21
Winterization Procedures . . . . . . . . . . . . . . .21
General Guidelines . . . . . . . . . . . . . . . . . .21
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.23
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COIL-SVX01B-EN 5
Model Number DescriptionsDigit 1 - ProductD = Heating and
cooling coil
Digit 2, 3 – CoilTypeA0 5/8" tube Steam CoilAA 5/8" tube Steam
CoilD0 5/8" tube Water CoilD1 5/8" tube Water CoilD2 5/8" tube
Water CoilDD 5/8" tube Water CoilDL 5/8" tube Water CoilF0 5/8"
tube DX CoilFD 5/8" tube DX CoilHA 5/8" tube Refrig Heat Recovery
CoilHB 5/8" tube Refrig Heat Recovery CoilH4 1/2" tube Refrig Heat
Recovery CoilK0 5/8" tube Water CoilLL 1/2" tube Water CoilN0 1"
tube Steam CoilNN 1" tube Steam CoilNS 1" tube Steam CoilOD 5/8"
tube Water CoilOK 5/8" tube Water CoilOW5/8" tube Water CoilP2 5/8"
tube Water CoilP4 5/8" tube Water CoilP8 5/8" tube Water CoilRD
5/8" tube Water CoilRK 5/8" tube Water CoilRW 5/8" tube Water
CoilST 5/8" tube WTR/STM CoilT0 5/8" tube WTR/STM CoilTT 5/8" tube
Water CoilUA 1/2" tube Water CoilUF 1/2" tube DX CoilUU 1/2" tube
Water CoilUW1/2" tube Water CoilW 5/8" tube Water CoilWA 5/8" tube
Water CoilWC 5/8" tube Water CoilWD 5/8" tube Water CoilWL 1/2"
tube Water CoilWR 5/8" tube Water CoilWS 5/8" tube Steam CoilXW
5/8" tube Water Coil5A 5/8" tube Water Coil5D 5/8" tube Water
Coil5W 5/8" tube Water CoilS0 Special Coil
Digit 4 – DevelopmentB = Development “B”
Digit 5, 6 – Fin Width12 = 12” Finned Coil WidthTO57 = 57”
Finned Coil Width
Digit 7, 8, 9 – Fin Length012 = 12” Finned Coil LengthTO168 =
168” Finned Coil Length
Digit 10,11 – Design sequenceF0 = Design sequence “F”
Digit 12 – Rows
Digit 13 – ApplicationA = HeatingB = Cooling with drain holesC =
Cooling without drain holesS = Special
Digit 14, 15, 16 – Fin Spacing072 = 72 Fins per footTo168 = 168
Fins per foot
Digit 17 – FinTypeC = Delta Flo™ E – Energy EfficiencyD = Delta
Flo H – High EfficiencyB = Prima Flo™ E – Energy EfficiencyE =
Prima Flo H – High EfficiencyA = Sigma Flo™
Digit 18 – Fin MaterialA = AluminumB = CopperS= Special
Digit 19 –Tube MaterialA = 0.016” Copper ½” O.D.B = 0.020”
Copper 5/8” O.D.C = 0.024” Copper 5/8” O.D.G = 0.049" Red Brass
5/8"H = 0.025” Copper ½” O.D.J = 0.016" Copper ½" OD Internally
EnhancedS = Special
Digit 20 – Casing MaterialA = GalvanizedB = Stainless Steel
Digit 21 – Fin CoatingC = CompleteCoatTMS = Special
Digit 22 –Turbulators0 = None/Not UsedA =TurbulatorsS =
Special
Digit 23 – Coil SupplyA = RH – Horizontal sideB = LH –
Horizontal sideS = Special
Digit 24 - DX Coil CircuitingTypeA = Standard single
distributorB = Horizontal SplitC = Vertically SplitD = IntertwinedE
= Heat Pump / Intertwined0 = Not a DX coilS = Special
Digit 25 - DistributorTube SizeA = 3/16" DiamTubesB = 1/4"
DiamTubesC = 5/16" DiamTubes0 = Not a DX coilS = Special
Digit 26
Digit 27 DistributorTube Sizefor Vertical (Leaving air side)3 =
3/16" DiamTubes4 = 1/4" DiamTubes5 = 5/16" DiamTubes0 = Not a DX
coilS = Special
Digit 28 Number of circuits forvertically splitA = FullB = HalfC
= QuarterD = EighthE = Sixteenth0 = Not a DX coilS = Special
Digit 29 –Test0 = StandardTestA = high Pressure Proof and
LeakTest(450/300 PSI)B = high Pressure Proof and LeakTest(6000/400
PSI)S = Quarter
Digit 30 – Inspection0 = Standard InspectionA = Certification
RequiredB = Special
Digit 31 – 35 Special SupplyHeader Location Dimension0 =
Location27.75 = Location
Digit 36 – 40 Special ReturnHeader Location Dimension0 =
Location27.75 = Location
Refrigerant Heat Recovery CoilsDigits
Digit 31, 32 to 53,54 – HeatRecovery Coil (N) CompressorCircuit
- No ofTubes/Circuit00 =Tubes per CircuitTo36 =Tubes per
Circuit
Digit 31 – 35 Special SupplyHeader Location Dimension0 =
Location27.75 = Location
Refrigerant Coils Digits
Digit 55 – Packed ElbowA = With Packed Elbow0 = Not a DX
coil
Digit 56 – RefrigerantType
A = 1 Row F = 8 rowsB = 2 Rows G = 10 rowsC = 3 Rows H = 12
rowsD = 4 Rows S = SpecialE = 6 rows
A = Full D = EighthB = Half E = SixteenthC = Quarter
0 = None C = R410AA = R12 D = SpecialB = R22
-
General Information
Shipping and ReceivingAll coils are shipped assembled and
packaged.
Upon receipt, inspect each coil for any in-transit
damage.Freight claims must be filed for any shipping damage
orshipping loss.
Claims for shipping damage must be filed immediatelywith the
delivering carrier. Make specific notationsconcerning the damage on
the freight bill. Concealeddamage must be reported within 15 days
of receipt.
Coil InformationTrane water, steam and refrigerant coils are
identifiedaccording to specific types, fins per foot, widths
andlengths.
Trane refrigerant coils,Type F, FD, H and H4 are
factorydehydrated and sealed with a 10 – 20 psig dry
Nitrogenholding change prior to shipment. A Schrader valve
isinstalled to verify the holding pressure. Do not break theseals
until the coil is installed.
General data is given in General dataTable 1, p. 7. Type Fand FD
refrigerant coils have certified ratings when usedwith Refrigerant
R-22 and R-410A, and may be used withother refrigerant (see
applications chart). There is no AHRIcertification program for type
H and H4 coils. Use athermal expansion valve or other metering
device tocontrol refrigerant flow into the coil.
6 COIL-SVX01B-EN
-
Applications
Applications
Table 1. General data
Coil Type Rows Tube materialPressure
PSI Temp F
Heating and Cooling Water Coils
W
1
Copper0.020 in.0.024 in.0.035 in.
200 325
Red Brass0.049 in.
200 388
3
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in
200 220
4, 6, 8, 10, 12
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
WL 2, 4, 6, 8Copper
0.016 in.0.025in.
200 220
UW 2, 4, 6, 8Copper
0.016 in.0.025 in.
200 220
5W
1 Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 250
2 200 220
WA 1
Copper0.020 in.0.024 in.0.035 in.
200 325
Red Brass0.049 in.
200 388
WD 6, 8, 10, 12
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
LL 4, 6, 8Copper
0.016 in.0.025 in.
200 220
UU 4, 8Copper
0.016 in.0.025 in.
200 220
5D 6, 8, 10
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
DD 4, 6, 8, 10, 12
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
D 3, 4, 6, 8, 10, 12
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
D1 3, 4, 6, 8, 10, 12
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
D2 6, 8, 10, 12
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
K 2, 3, 4, 6, 8, 10, 12
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
P2 2, 4, 6
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
P4 2, 4, 6, 8
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
P8 4, 8
Copper0.020 in.0.024 in.0.035 in.Red Brass0.049 in.
200 220
Table 1. General data (continued)
Coil Type Rows Tube materialPressure
PSI Temp F
COIL-SVX01B-EN 7
-
Applications
UA 2Copper
0.016 in.0.025 in.
200 220
TT 1, 2
Copper0.020 in.0.024 in.
225 325
Copper0.035 in.
225 325
Red Brass0.049 in.
350 400
T, ST 1, 2
Copper0.020 in.0.024 in.
225 325
Copper0.035 in.
225 325
Red Brass0.049 in.
350 400
Steam Coils
T, ST 1, 2
Copper0.020 in.0.024 in.0.035 in.
100 400
Red Brass0.049 in.
200 450
NS, N 1
Copper0.031 in.
100 400
Red Brass0.049 in.
200 400
A 1
Copper0.020 in.0.024 in.0.035 in.
100 400
Red Brass0.049 in.
200 400
Refrigerant coils
H 1, 2, 3, 4, 6Copper
0.020 in.300 n/a
H4 2, 4, 6
Copper0.016 in.
300 n/a
Copper0.025 in.
650 n/a
FD 4, 6
Copper0.016 in. smooth
0.016 in. internallyenhanced0.025 in.
480 n/a
UF 4, 6, 8
Copper0.016 in.smoothtubes
0.016 in.internallyenhanced0.025 in.
480 n/a
Table 1. General data (continued)
Coil Type Rows Tube materialPressure
PSI Temp F
F 2, 3, 4, 6, 8Copper
0.020 in.0.024 in.
300 n/a
Replacement and Special Coils
OW 2, 3, 4, 6, 8, 10, 12
Copper 0.020 in.0.024 in.0.035 in.Red Brass 0.049 in.
200 220
OD - Old style D coil
replacement (copper header)
2, 3, 4, 6, 8, 10, 12
Copper 0.020 in.0.024 in.0.035 in.Red Brass 0.049 in.
200 220
OK- Old style K coil
replacement (copper header)
2, 3, 4, 6, 8, 10, 12
Copper 0.020 in.0.024 in.0.035 in.Red Brass 0.049 in.
200 220
WC 1
Copper 0.020 in.0.024 in.0.035 in.Red Brass 0.049 in.
200 250
WS 1
Copper 0.020 in.0.024 in.0.035 in.Red Brass 0.049 in.
200 250
XW - Old style WA coil 2
Copper 0.020 in.0.024 in.0.035 in.Red Brass 0.049 in.
200 220
NN (NSN) - One N coil header and
one NS header (dual steam fed - special coil)
1
Copper 0.031 in. 100 400
Red Brass 0.049 in 200 400
5A 2
Copper 0.020 in.0.024 in.0.035 in.Red Brass 0.049 in.
200 220
Table 1. General data (continued)
Coil Type Rows Tube materialPressure
PSI Temp F
8 COIL-SVX01B-EN
-
Installation
Water CoilsConsider the following when selecting coil
location:
• Allow sufficient space for access to the coil
formaintenance.
• Coil piping and condensate drain requirements mustbe
observed.
Coil InstallationRefer to Figure 1 and Figure 2.
1. Install coil with airflow as indicated by arrow onnameplate
or coil casing.
2. Drain and vent piping connections are provided asstandard on
most coils. It is the installers responsibilityto locate and use
the appropriate header taps toadequately drain these coils.
3. Check for fin damage and straighten fins, if necessary.
4. If necessary, coils may be stacked. Stacking channels orbar
stock (supplied by installer) are recommendedwhen stacking coils
more than three high.
5. Position stacking channels (if used) under both ends ofthe
coil and at each center support.
6. To insure no unconditioned air bypasses the coil
whenstacking, caulk or install sheet metal blockoffs(supplied by
installer) between and around coils on theentering air side.
7. Drain pans are used as one method of condensateremoval.
Figure 3 illustrates a typical drain paninstallation.
Important: Before operating equipment, install filtersto insure
maximum coil performance.
WARNINGHazard of Explosion and Deadly Gases!Failure to follow
all proper safe refrigerant handlingpractices could result in death
or serious injury. Neversolder, braze or weld on refrigerant lines
or any unitcomponents that are above atmospheric pressure orwhere
refrigerant may be present. Always removerefrigerant by following
the guidelines established bythe EPA Federal Clean Air Act or other
state or localcodes as appropriate. After refrigerant removal, use
drynitrogen to bring system back to atmospheric pressurebefore
opening system for repairs. Mixtures ofrefrigerants and air under
pressure may becomecombustible in the presence of an ignition
sourceleading to an explosion. Excessive heat from
soldering,brazing or welding with refrigerant vapors present
canform highly toxic gases and extremely corrosive acids.
Figure 1. Type W coil with vent and mounting holelocations
Figure 2. Typical DD coil piping, center connections
Coil mounting holes
Airflow
Coil Drain Locations
COIL-SVX01B-EN 9
-
Installation
Refrigerant CoilsNote: Type F, FD, H, H4 and UF coils have
been
dehydrated and charged with a holding charge.Toprevent leaks and
system contamination, do notbreak the seals until the coil is
installed.
To determine which side of the coil the piping connectionsshould
be on, look at the fin surface on the downstreamside and with the
air blowing in your face, call out right orleft hand
connections.
Install the coil with airflow in the same direction asindicated
on the coil nameplate or casing. Be careful not todamage the coil
fins while handling.
The suction connection must be at the bottom of thesuction
header. Refrigerant distributor must be in a verticaldown-feed
position. A refrigerant coil should not be usedfor vertical upward
or downward airflow or in a verticaltube position.
When stacking more than three coils, stacking channels orbar
stock (supplied by the installer) should be used. If used,stacking
channels should be positioned under both ends ofthe coil and at
each center support.To ensure that nounconditioned air bypasses the
staked coils, install caulkor metal blockoffs between and around
the coils, on theentering air side.
Note: Straighten coil fins at the time of installation
tomaintain maximum heat transfer. For additionalinformation refer
to Maintenance Section.
Provide means for condensate collection and removal.Figure 3
illustrates the dimensional recommendations fordrain pans.
Be sure that filters are installed upstream of the coil.
Clean,efficient filters will minimize the need for frequent
coilcleaning and will help keep the coils operating atmaximum
performance.
Leak-test the entire refrigeration system after all piping
iscomplete. Charge the unit according to approximateweight
requirements, operating pressures and superheat/subcooling
measurements.
Figure 3. Typical drain pan installation
NOTICE:Coil Damage!Do not use slots in coil casing to lift coils
weighingmore than 750 pounds. Failure to follow this
instructioncould result in damage to coil and coil casing.
WARNINGHazard of Explosion!Failure to follow proper safe leak
test procedures couldresult in death or serious injury or equipment
orproperty-only-damage. NEVER use an open flame todetect gas
leaks.You MUST use a leak test solution forleak testing.
10 COIL-SVX01B-EN
-
Coil Piping and Connections
General RecommendationsProper installation, piping, and trapping
is necessary toensure satisfactory coil operation and to
preventoperational damage:
• Support all piping independently of the coils.
• Provide swing joints or flexible fittings on allconnections
that are adjacent to heating coils toabsorb thermal expansion and
contraction strains.
Note: The contractor is responsible for supplying
theinstallation hardware.
• For best results, use a short pipe nipple on the coilheaders
prior to making any welded flange or weldedelbow type
connections.
• Pipe coils counterflow to airflow.
• When attaching the piping to the coil header, make
theconnection only tight enough to prevent leaks.Maximum
recommended torque is 200 foot-pounds.
• Use pipe sealer on all thread connections.
• After completing the piping connections, seal aroundpipe from
any casing enclosing the coil from innerpanel to outer panel.
Drain PanTrapping• 3-30: 1 inch
• 35-57: 1-1/4 inch
• 66-1201: 1/2 inch
Drain pan trapping for section under negative pressure
L = H + J + pipe diameter where:
H = 1 inch for each inch of negative pressure plus 1 inch
J = 1/2 H
Drain pan trapping for section under positive pressure
L = H + J + pipe diameter where:
H = 1/2 inch (minimum)
J = 1/2 H plus the unit positive static pressure at
coildischarge (loaded filters)
Steam Coil PipingAir handlers fitted with steam coils have
labeled holes forpiping penetrations. Figure 5, p. 12 illustrates a
typicalsteam coil piping configuration. See Table 2 for the codesof
system components in these figures.
The coil condensate return line must be piped full size ofthe
condensate trap connection, except for a short nipplescrewed
directly into the coil header's condensate returntapping. Do not
bush or reduce the coil return trappingsize.
NOTICE:Connection Leaks!Use a backup wrench when attaching
piping to coilswith copper headers to prevent damage to the
coilheader. Do not use brass connectors because theydistort easily
and could cause connection leaks.
NOTICE:OverTightening!Do not use teflon-based products for any
fieldconnections because their high lubricity could
allowconnections to be over-tightened, resulting in damageto the
coil header.
NOTICE:Leakage!Properly seal all penetrations in unit casing.
Failure toseal penetrations from inner panel to outer panel
couldresult in unconditioned air entering the unit, and
waterinfiltrating the insulation, resulting in equipmentdamage.
NOTICE:Header Damage!Bottoming out of the connecting pipe in
header resultsin extreme stresses that could cause the header
tocrack.
Figure 4. Drain pan trapping for negative and positivepressure
applications
COIL-SVX01B-EN 11
-
Coil Piping and Connections
Table 2. Code of system components for piping figures
Code System Component
FT Float and thermostatic steam trap
GV Gate valve
OV Automatic two-position (ON-OFF) control valve
VB Vacuum breaker
ST Strainer
AV Automatic or manual air vent
MV Modulating control valve
Figure 5. Typical piping forType NS steam coils andhorizontal
tubes for horizontal airflow
Figure 6. Typical piping for type NS steam coils,vertical tubes
for horizontal airflow
Figure 7. Typical piping for type A or N steam coils,horizontal
tubes for horizontal airflow
Figure 8. Typical piping for type A or N steam coils,vertical
tubes for horizontal airflow
Figure 9. Typical piping for typeT steam coils,horizontal tubes
for horizontal airflow
12 COIL-SVX01B-EN
-
Coil Piping and Connections
To prevent coil damage, complete the
followingrecommendations:
• Install a 1/2-inch NPT, 15 degree swing check valvevacuum
breaker with cracking pressure of 0.25 inchesHg (3.4 inches water)
or lower at the top of the coil.Thisvacuum breaker should be
installed as close to the coilas possible.
• For coil type NS, install the vacuum breaker in theunused
condensate return tapping at the top of thecoil.
• Vent the vacuum breaker line to atmosphere orconnect it into
the return main at the discharge side ofthe steam trap
Note: Vacuum breaker relief is mandatory when the coilis
controlled by a modulating steam supply orautomatic two position
(ON-OFF) steam supplyvalve.Vacuum breaker relief is also
recommendedwhen face-and-bypass control is used.
Proper steam trap installation is necessary for satisfactorycoil
performance and service life. For steam trapinstallation:1. Install
the steam trap discharge 12 inches below the
condensate return connection.Twelve inches providessufficient
hydrostatic head pressure to overcome traplosses and ensures
complete condensate removal.
a. Use float and thermostatic traps with atmosphericpressure
gravity condensate return, with automaticcontrols, or where the
possibility of low-pressure
supply steam exists. (Float and thermostatic trapsare
recommended because of gravity drain andcontinuous discharge
operation.)
b. Use bucket traps only when the supply steam is notmodulated
and is 25 psig or higher.
Note: Trane steam coils require a minimum of 2 psi ofpressure to
assure even heat distribution.
2. Trap each coil separately to prevent holding upcondensate in
one or more of the coils.
3. Install strainers as close as possible to the inlet side
ofthe trap.
4. If installing coils in series airflow, control each coilbank
independently with an automatic steam-controlvalve. Size the traps
for each coil using the capacity ofthe first coil in direction of
airflow.
5. Use a modulating valve that has linear flowcharacteristics to
obtain gradual modulation of the coilsteam supply.
Note: Do not modulate systems with overhead orpressurized
returns unless the condensate isdrained by gravity into a receiver,
vented toatmosphere, and returned to the condensatepump.
6. Pitch all supply and return steam piping down 1 inchfor every
10 feet in the direction of the steam orcondensate flow.
Note: Do not drain the steam mains or take-offs throughthe
coils. Drain the mains ahead of the coilsthrough a steam trap to
the return line
7. Ensure overhead returns have 1 psig of pressure at thesteam
trap discharge for every 2 feet of elevation forcontinuous
condensate removal.
8. At start-up on units with fresh air dampers, slowly turnthe
steam on full for at least 10 minutes before openingthe fresh air
intake.
Water Coil PipingFigure 10 and Figure 11 illustrate typical
water coil pipingconfigurations.Type 5A, 5W, D1, OD, OK, OW, P2,
P4, P8,T,TT, UA, UW, W, WC and WS water coils are self-ventingonly
if the water velocity exceeds 1.5 feet per second (fps)in the coil
tubes.Type D2, DD, LL, UU, and WD water coilsare self-venting only
if the water velocity exceeds 2.5 fpsin the coil tubes. See the
unit submittals for coil watervelocity. If the water velocity is
below these minimums,vent the coil by one of the following
methods:
1. Install an air vent in the top pipe plug tapping of thereturn
header.
2. When the return line rises above the top of the coil,vent
from the top of the return header horizontally tothe return
piping.
NOTICE:Breaker Cracking Pressure!The 1/2-inch NPT, 15 degree
swing check valve vacuumbreaker is recommended because other
vacuumbreakers, such as spring-loaded ball-check breakers,have
cracking pressures as high as 1.25 inches Hg (17inches of water).
Vacuum breakers with fitting sizessmaller than 1/2 inch NPT are too
small to relievevacuum quick enough to ensure complete
condensatedrainage. Other types of swing check valve vacuumbreakers
are acceptable if the fittings size is not smallerthan 1/2-inch NPT
and the cracking pressure is notlarger than 0.25 inches Hg (3.4
inches of water). Failureto follow these instructions could result
in equipmentdamage.
NOTICE:Equipment Damage!Condensate must flow freely from the
coil at all timesto prevent coil damage from water hammer,
unequalthermal stresses, freeze-up and/or corrosion. In allsteam
coil installations, the condensate returnconnections must be at the
low point of the coil. Failureto follow these instructions could
result in equipmentdamage.
COIL-SVX01B-EN 13
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Coil Piping and Connections
Note: When installing coils in a duct mountedapplication, air
leakage through the tube and U-bend penetrations in the coil casing
should beexpected. Capping over the coil ends or sealingaround the
tubes with a pliable sealant such assilicone will minimize this
leakage.
Refrigerant Coil PipingNote: Refer to the Warnings, Cautions and
Notices page
under the “Responsible Refrigerant Practices”section.
Use Figure 15 to determine the proper, relative sequenceof the
components in the refrigerant lines that connect thecondensing unit
to an evaporator coil. Refer to “Examplesof Field-Installed
Evaporator Piping” on p. 17 for moredetailed schematics of
evaporator piping.
Figure 10. Typical piping for type 5W (1-row), WC andWS water
coil
Figure 11. Typical piping for type 5A, 5W (2-row), D, DD,D1, D2,
K, LL, OD, OK, OW, W3 (to 12-row),WA (2-row), WD, and WL water
coils
Figure 12. Typical piping for stacked water coils
Figure 13. TypeT and ST water coil
Figure 14. Type W or WA, 1-row water coil
14 COIL-SVX01B-EN
-
Coil Piping and Connections
Liquid Lines
Line SizingProperly sizing the liquid line is critical to a
successful split-system application.The selected tube diameter
mustprovide at least 5°F [2.7°C] of subcooling at the
expansionvalve throughout the operating envelope. Increasing
thesize of the liquid line will not increase the
availablesubcooling.
Routing: Install the liquid line with a slight slope in
thedirection of flow so that it can be routed with the suctionline.
Minimize tube bends and reducers because theseitems tend to
increase pressure drop and to reducesubcooling at the expansion
valve. Liquid line receivers,other than those that are
factory-installed, are notrecommended.
InsulationThe liquid line is generally warmer than the
surroundingair, so it does not require insulation. In fact, heat
loss fromthe liquid line improves system capacity because
itprovides additional subcooling.
ComponentsLiquid-line refrigerant components necessary for
asuccessful job include a filter drier, access port, solenoidvalve,
moisture-indicating sight glass, expansion valve(s),and ball
shutoff valves. Figure 15 illustrates the propersequence for
positioning them in the liquid line. Positionthe components as
close to the evaporator as possible.
• Filter drier:There is no substitute for cleanlinessduring
system installation.The filter drier preventsresidual contaminants,
introduced during installation,from entering the expansion valve
and solenoid valve.
• Access port:The access port allows the unit to becharged with
liquid refrigerant and is used todetermine subcooling.This port is
usually aSchraeder® valve with a core.
• Solenoid valve: In split systems, solenoid valvesisolate the
refrigerant from the evaporator during offcycles; under certain
conditions, they may also trim theamount of active evaporator as
compressors unload.Generally, the“trim” solenoid valve is
unnecessary forvariable-airvolume comfort-cooling applications,
and
Figure 15. Example of placement for split-system components
COIL-SVX01B-EN 15
-
Coil Piping and Connections
is only required for constant-volume applicationswhen
dehumidification is a concern.
• Moisture-indicating sight glass: Be sure to install
onemoisture-indicating sight glass in the main liquid line.The only
value of the sight glass is its moistureindication ability. Use
actual measurements oftemperature and pressure—not the sight
glass—todetermine subcooling and whether the system isproperly
charged.The moisture indicator/sight glassmust be sized to match
the size of the liquid line at thethermal expansion valve.
• Thermal expansion valve:The expansion valve is thethrottling
device that meters the refrigerant into theevaporator coil.
Metering too much refrigerant floodsthe compressor; metering too
little elevates thecompressor temperature. Choosing the correct
sizeand type of expansion valve is critical to assure it
willcorrectly meter refrigerant into the evaporator coilthroughout
the entire operating envelope of thesystem. Correct refrigerant
distribution into the coilrequires an expansion valve for each
distributor.
The thermal expansion valve must be selected for propersize and
capacity.The size of the expansion valve shouldcover the full range
of loadings. Check that the valve willsuccessfully operate at the
lightest load condition. Forimproved modulation, choose expansion
valves withbalanced port construction and external
equalization.
Cut the process tube and cap assembly from the liquidconnection
as shown in Figure 16 and install theexpansion valve directly to
the liquid connections.
Suction Lines
Line sizingProper suction-line sizing is required to guarantee
the oilreturns to the compressor throughout the system’soperating
envelope. At the same time, the line must besized so that the
pressure drop does not excessively affectcapacity or efficiency.To
accomplish both objectives, itmay be necessary to use two different
line diameters: onefor the horizontal run and for vertical drops,
and anotherfor the vertical lifts.
RoutingTo prevent residual or condensed refrigerant from
“free-flowing” toward the compressor, install the suction line soit
slopes slightly—that is, by ¼ inch to 1 inch per 10 feet
ofrun—toward the evaporator. When the applicationincludes a suction
riser, oil must be forced to travel theheight of the riser. Riser
traps and double risers areunnecessary in the suction line when the
refrigerant coil isused withTrane condensing units.
Avoid putting refrigerant lines underground.
Refrigerantcondensation or installation debris inside the line,
serviceaccess, and abrasion/corrosion can quickly
impairreliability.
InsulationAny heat that transfers from the surrounding air to
thecooler suction lines increases the load on the
condenser(reducing the system’s air-conditioning capacity)
andpromotes condensate formation (adversely affectingindoor air
quality). After operating the system and testingall fittings and
joints to verify the system is leak-free,insulate the suction lines
all the way to inner side panel toprevent heat gain and unwanted
condensation.s
ComponentsInstalling the suction line requires field
installation ofthese components: a filter, access port, and a
Frostat™control when the refrigerant coil is used
withTranecondensing units. Position them as close to thecompressor
as possible.
Note: : Placement of the Frostat control is illustrated inFigure
15, p. 15
• Filter:The suction filter prevents contaminants,introduced
during installation, from entering thecompressor. For this reason,
the suction filter shouldbe the replaceable-core type, and a clean
core shouldbe installed after the system is cleaned up.
• Access port:The access port is used to determinesuction
pressure.This port is usually a Schraeder valvewith a core.
• Frostat™ coil frost protection:The Frostat control is
thepreferred method for protecting evaporator coils fromfreezing
when the refrigerant coil is used withTranecondensing units. It
senses the suction-line
NOTICE:Valve Damage!Disassemble the thermal expansion valve
beforecompleting the brazing connections. If necessary, wrapthe
valve in a cool, wet cloth while brazing. Failure toprotect the
valve from high temperatures could result indamage to internal
components.
Figure 16. Type refrigerant coil with packed elbow
16 COIL-SVX01B-EN
-
Coil Piping and Connections
temperature and temporarily disables mechanicalcooling if it
detects frost conditions.The control ismechanically attached to the
outside of the refrigerantline, near the evaporator, and wired to
the unit controlpanel.
• Ball shutoff valve: Adding manual, ball-type shutoffvalves
upstream and downstream of the filtersimplifies replacement of the
filter core.
Refrigerant ChargingEvacuate and leak-test the entire
refrigeration system afterpiping is complete. Charge the unit
according toapproximate weight requirements and
operatingpressures.Then measure superheat and subcooling afterthe
system has been allowed time to stabilize and adjustthe thermal
expansion valve setting if necessary. Alwaysallow the system to
stabilize before taking pressure ortemperature readings.
Installation ChecklistUse the following checklist to verify that
all necessaryinstallation procedures have been completed. Refer
tospecific sections of this manual for more
detailedinformation.
[ ] Coil is installed with airflow in same direction asindicated
on the coil nameplate or casing.
[ ] Suction connection of refrigerant coils is at the bottomof
suction header.
[ ] If stacking more than three coils, stacking channels
areproperly installed. Bypass air is prevented by caulk
orblockoffs.
[ ] Condensate drain pans and piping installed
[ ] Clean filters are installed upstream of the coil.
[ ] A liquid line filter-drier is installed upstream of
theexpansion valve.
[ ] A moisture indicator/sight glass is installed betweenthe
expansion valve and filter-drier.
[ ] A liquid line shutoff valve with access port is
installedclose to the condenser.
[ ] A schraeder valve is installed in the suction line closeto
the refrigerant coil outlet.
[ ] The thermal expansion valve, with external
equalizerconnections, is installed directly on the coil
liquidconnection.The liquid distributor must be in a truevertical
position.
[ ] Piping system is evacuated, leak-tested and charged.
[ ] Superheat and subcooling measurements are taken.Thermal
expansion valve is adjusted if necessary toobtain desired
superheat.
Coil identificationA nameplate is provided on the top channel
near thepiping connection end of the coil.The name plate
containsthe coils serial number and model number. Use thesenumbers
whenever inquiring on coil information with aTrane
representative.
Examples of Field-InstalledEvaporator Piping
Single-Circuit Condensing Unit:Evaporator Coil with One
Distributor
1. Pitch the liquid line slightly—1 inch/10 feet—so that
therefrigerant drains toward the evaporator.
2. Provide one expansion valve per distributor.
3. Slightly pitch the outlet line from the suction headertoward
the suction riser—that is, 1 inch/10 feet in thedirection of flow.
Use the tube diameter that matchesthe suction-header
connection.
4. For vertical riser, use the tube diameter recommendedby the
condensing unit manufacturer.Assure the top ofthe riser is higher
than the evaporator coil.
5. Arrange the suction line so the refrigerant gas leavingthe
coil flows downward, past the lowest suction-header outlet, before
turning upward.
6. Pitch the suction line slightly—1 inch/10 feet—so
therefrigerant drains toward the evaporator.
7. Insulate the suction line.
Figure 17. Single-circuit evaporator coil with
onedistributor
COIL-SVX01B-EN 17
-
Coil Piping and Connections
Single-Circuit Condensing Unit:Evaporator Coil withTwo
Distributors
1. Pitch the liquid line slightly—1 inch/10 feet—so that
therefrigerant drains toward the evaporator.
2. Provide one expansion valve per distributor.
3. Slightly pitch the outlet line from the suction headertoward
the suction riser—that is, 1 inch/10 feet in thedirection of flow.
Use the tube diameter that matchesthe suction-header
connection.
4. Arrange the suction line so the refrigerant gas leavingthe
coil flows downward, past the lowest suction-header outlet, before
turning upward. Use a double-elbow configuration to isolate the
thermal expansionvalve bulb from other suction headers.
5. For horizontal tubing, use the tube diameterrecommended by
the condensing unit manufacturer.
6. For vertical riser, use the tube diameter recommendedby the
condensing unit manufacturer.Assure the top ofthe riser is higher
than the evaporator coil.
7. Pitch the suction line slightly—1 inch/10 feet—so
therefrigerant drains toward the evaporator.
8. Insulate the suction line.
9. Only use a “trim” solenoid valve for
constant-volume,humidity-sensitive applications. For all
otherapplications, install a single solenoid valve (the“pumpdown”
solenoid valve) between the liquid-linefilter drier and the sight
glass.
Single-Circuit Condensing Unit:Evaporator Coil with Four
Distributors
Follow steps 1-9 as in “Single-Circuit Condensing
Unit:Evaporator Coil withTwo Distributors,” p. 18.
Figure 18. Single-circuit evaporator coil with
twodistributors
Figure 19. Single-circuit condensing unit: evaporatorcoil with
four distributors
18 COIL-SVX01B-EN
-
Coil Piping and Connections
Dual-Circuit Condensing Unit: EvaporatorCoil withTwo
Distributors
1. Pitch the liquid line slightly—1 inch/10 feet—so that
therefrigerant drains toward the evaporator.
2. Provide one expansion valve per distributor.
3. Slightly pitch the outlet line from the suction headertoward
the suction riser—that is, 1 inch/10 feet in thedirection of flow.
Use the tube diameter that matchesthe suction-header
connection.
4. The top of the Circuit 1 suction riser must be higherthan the
bottom evaporator coil. Use the tube diameterrecommended by the
condensing unit manufacturerfor the riser.
5. Arrange the suction line so the refrigerant gas leavingthe
coil flows downward, past the lowest suction-header outlet, before
turning upward.
6. The top of the Circuit 2 suction riser must be higherthan the
top evaporator coil. Use the tube diameterrecommended by the
condensing unit manufacturerfor the riser.
7. Pitch the suction line slightly—1 inch/10 feet—so
therefrigerant drains toward the evaporator.
8. Insulate the suction line.
Dual-Circuit Condensing Unit: EvaporatorCoil with Four
Distributors
Follow steps 1-3 as in “Dual-Circuit Condensing Unit:Evaporator
Coil withTwo Distributors,” p. 19.
4. Arrange the suction line so the refrigerant gas leavingthe
coil flows downward, past the lowest suction-header outlet, before
turning upward. Use a double-elbow configuration to isolate the
thermal expansionvalve bulb from other suction headers.
5. For horizontal tubing, use the tube diameterrecommended by
the condensing unit manufacturer.
6. For vertical riser, use the tube diameter recommendedby the
condensing unit manufacturer.Assure the top ofthe riser is higher
than the evaporator coil.
7. The top of the Circuit 1 suction riser must be higherthan the
bottom evaporator coil.
8. The top of the Circuit 2 suction riser must be higherthan the
top evaporator coil.
9. Pitch the suction line slightly—1 inch/10 feet—so
therefrigerant drains toward the evaporator.
10. Insulate the suction line.
Figure 20. Dual-circuit evaporator coil with twodistributors
Figure 21. Dual-circuit evaporator coil with
fourdistributors
COIL-SVX01B-EN 19
-
Coil Piping and Connections
Dual-Circuit Condensing Unit: EvaporatorCoil with Eight
Distributors
Follow steps 1-10 as in “Dual-Circuit Condensing Unit:Evaporator
Coil with Four Distributors,” p. 19.
11. Only use a “trim” solenoid valve for
constant-volume,humidity-sensitive applications. For all
otherapplications, install a single solenoid valve (the“pumpdown”
solenoid valve) between the liquid-linefilter drier and the sight
glass.
Figure 22. Dual-circuit evaporator coil with
eightdistributors
20 COIL-SVX01B-EN
-
Maintenance
Coil Cleaning
Keep coils clean to maintain maximum performance. Foroperation
at its highest efficiency, clean the coil oftenduring periods of
high cooling demand or when dirtyconditions prevail. A routine
cleaning schedule isrecommended to prevent dirt build-up in the
coil fins,where it may not be visible.
Remove large debris from the coils and straighten finsbefore
cleaning.
Clean refrigerant coil fin surfaces with cold water anddetergent
or with one of the commercially availablechemical coil cleaners.
Rinse coils thoroughly aftercleaning.
Type K coils have removable headers for cleaning.A smallnylon or
fiber brush may be used to clean the tubes. Aftercleaning tubes
flush with water. Replace rubber sealinggasket with new gasket when
removing any header and besure it seats properly when replacing the
header. If
necessary, pull turbulators, clean tubes, and replace withnew
turbulators.
When the header covers are replaced, washers arerecommended
under bolt heads and bolts should beevenly tightened to 50 ft.-lbs.
torque.
Coils should be kept clean to maintain maximumperformance. If
fins become dirty, clean with steam anddetergent, hot water spray
and detergent, or one of thecommercially available chemical coil
cleaners.
Fin StraighteningCoil fins may have been bent during shipping or
servicing,and must be straightened to maintain maximum
heattransfer. Reduction of the effective coil
surfacecorrespondingly reduces coil capacity. Always check
inappearance after any handling of the coil and after anyservicing
is done near the coils.
Fin rakes are sized according to number of fins per inch ofthe
coil. For relatively small bends that require only minorrepair,
other tools may be used to evenly space the fins. Becareful not to
damage the coils.
Rinse coils thoroughly after cleaning.
Winterization Procedures
General GuidelinesWater coil winterization procedures consist
primarily ofdraining water from the coil before the heating season
andadding antifreeze to prevent freezing of any water leftstanding
in the coil.
Individual coil type and attitude (pitched toward drainheader)
will determine how completely each coil can bedrained for shutdown
during inoperative period. Ifdraining is questionable because of
dirt or scale deposits.Blow coil out with compressed air and fill
the coil withantifreeze before the heating season begins.
Type D and DD coilsWhere coils are installed level or pitched
toward the drainheader, remove the vent and drain plugs at the ends
ofeach header and allow the water to drain from the coil. Ifthe
coils have been pitched away from header, it will benecessary to
drain and blow the coils out as completely aspossible with
compressed air.The coil should then befilled and drained several
times with full strength ethylene
WARNINGHazardous Chemicals!Failure to follow all safety
instructions below couldresult in death or serious injury. Coil
cleaning agentscan be either acidic or highly alkaline and can
burnseverely if contact with skin occurs. Handle chemicalcarefully
and avoid contact with skin. ALWAYS wearPersonal Protective
Equipment (PPE) including gogglesor face shield, chemical resistant
gloves, boots, apronor suit as required. For personal safety refer
to thecleaning agent manufacturer’s Materials Safety DataSheet and
follow all recommended safe handlingpractices.
NOTICE:Coil Damage!Do not clean the coil with hot water or
steam.The useof hot water or steam as a refrigerant coil
cleaningagent will cause high pressures inside the coil tubingand
subsequent damage to the coil.
NOTICE:Equipment Damage!Do not use acidic chemical coil cleaner.
Do not usealkaline chemical coil cleaners that, after mixing, have
aph value greater than 8.5, without also using analuminum corrosion
inhibitor in the cleaning solution.Failure to follow these
guidelines or the manufacturer'sinstructions for use of cleaning
chemicals could resultin damage to the unit.
NOTICE:Coil Damage!Inactive water coils exposed to freezing and
sub-freezing temperatures must be winterized annually toprevent
“coil freeze” damage.
COIL-SVX01B-EN 21
-
Maintenance
glycol so that it will mix thoroughly with the water retainedin
the coil. Drain the coil as completely as possible.
Type K coilsRemove the header covers. If tubes are fouled,
cleaningcan be done with nylon or wire brush.To ensure that nowater
will remain in the coil, do not replace the headercovers until the
coils are put back into service.
Note: Type K coils are not cleanable by mechanicalmeans when
spring wire turbulators are used.
When the coils are put back into service, new gaskets mustbe
used. It is also recommended that when header coversare replaced,
washers be used under bolt heads and boltsbe evenly tightened to 50
ft.-lbs. torque.
All CoilsTypes except WL and UW—LeveledIf these coils have been
installed perfectly level, removethe vent and drain plugs at the
lower ends of each headerand allow the water to drain from the
coil.
If coil level is questionable, blow coil out with compressedair
to ensure proper drainage.
Type UW and WL Coils—Leveled and/orPitched — All except WL, UL,
D and DD
Remove the vent and drain plugs and blow the coils out
ascompletely as possible with compressed air.The coilsshould then
be filled and drained several times with fullstrength ethylene
glycol so that it will mix thoroughly withthe water retained in the
coil. Drain the coil out ascompletely as possible.
NOTICE:Equipment Damage!Use care in removing header plugs from
P2, P4 and P8coils. Overtorquing may result in twisted tubes.
22 COIL-SVX01B-EN
-
Notes
-
Trane optimizes the performance of homes and buildings around
the world. A business of Ingersoll Rand, theleader in creating and
sustaining safe, comfortable and energy efficient environments,
Trane offers a broadportfolio of advanced controls and HVAC
systems, comprehensive building services, and parts. For
moreinformation, visit www.Trane.com.
Trane has a policy of continuous product and product data
improvement and reserves the right to change design and
specifications without notice.
We are committed to using environmentally
conscious print practices that reduce waste.
© 2013Trane All rights reserved
COIL-SVX01B-EN 28 Mar 2013
Supersedes COIL-SVX01A-EN (20 Feb 2013)
Warnings, Cautions and NoticesModel Number DescriptionsGeneral
InformationShipping and ReceivingCoil Information
ApplicationsInstallationWater CoilsRefrigerant Coils
Coil Piping and ConnectionsGeneral RecommendationsDrain Pan
TrappingSteam Coil PipingWater Coil PipingRefrigerant Coil
PipingLiquid LinesLine SizingInsulationComponents
Suction LinesLine sizingRoutingInsulationComponents
Refrigerant ChargingInstallation ChecklistCoil
identification
Examples of Field-Installed Evaporator PipingSingle-Circuit
Condensing Unit: Evaporator Coil with One DistributorSingle-Circuit
Condensing Unit: Evaporator Coil with Two
DistributorsSingle-Circuit Condensing Unit: Evaporator Coil with
Four DistributorsDual-Circuit Condensing Unit: Evaporator Coil with
Two DistributorsDual-Circuit Condensing Unit: Evaporator Coil with
Four DistributorsDual-Circuit Condensing Unit: Evaporator Coil with
Eight Distributors
MaintenanceCoil CleaningFin StraighteningWinterization
ProceduresGeneral GuidelinesNotes