YLCC

1

Ref.: N-70001 0101

Air cooled liquid chillerwith centrifugal fanYLCC-40, 60, 81 & 121

Technical Information

2

- Description of the work parameters 15- Work parameters 15- Modifications of the set point and the work parameters 16- Trouble shooting and cotrol reset 17- Alarm conditions, causes and solution 17- Electrical connections 18- Electrical main data 18- Wiring diagrams 19 - 21

Operating instructions 22

- Starting 22- Preliminary checks 22- Start up process 22- Limits of use 22

Maintenance 22

- Regular maintenance 22- Condenser coil inspection and cleaning 22- Evaporator inspection and cleaning 22 - 23- Refrigerant and coil charge 23- Trouble / shooting 23

Accesories 24

- High pressure fans (350 PA) 24- YLCC high pressure fan-motor assembly 24- Low ambient kit 25- Isolator supports 26- Air filters 27

PageIndex

General 3

- General description 3- Nomenclature 3

Technical specifications 3

- Mechanical specifications 3- Main data 4- General dimensions 5 - 6- Minimum installation 7- Cooling capacities 8- Cooling capacity correction factors for outdoor air

temperature and leaving chilled glycol solutions 9- YLCC available external static pressure 10

Installation instructions 11

- General 11- Inspection 11- Handling 11- Positioning 11- Clearances 11- Warning signs 11- Installation 11- Protection of the environment 11- Hydraulic connections 12- Circulation pump 12- Hydraulic circuit flow rate/pressure characteristics YLCC units 13- Water connection 14- Standard performance 14- Flow switch 14- Electrical installation 14- Setting and operating instructions of the control thermostat (2 cooling stages) 14- Programming 15

Page

3

Y = YorkLC = Liquid chillerC = Centrifugal

Nominal size: 40 = 36 200W 60 = 56 400W 81 = 68 900W121 =

YLCC 40

115 700W

General descriptionYork YLCC series chillers are manufactured to the moststringent design and construction standards to ensure highperformance, reliability and adaptability to all types of airconditioning installations.This manual contains all the information required for correctinstallation of the units, together with operation and mainte-nance instructions. Read the manual carefully before attempt-ing to operate or service the machine.With the exception of simple operations such as condensercoil cleaning, YLCC series chiller installation and maintenancemust be performed by trained personnel.The manufacturer is not liable for injury or damage resultingfrom incorrect installation or operation, insufficient mainte-nance and/or failure to follow the procedures and instructionscontained in this manual.For warranty purposes, the following conditions must besatisfied:- The machine must be started by trained personnel from

authorised York Service Centres.- Only genuine York spare parts must be used.- All operation and maintenance operations indicated in this

manual must be performed at the specified times.Failure to satisfy any of these conditions will automaticallyvoid the warranty.

YLCC units must be installed indoors

Note:Illustrations and information in this manual are provided for informationonly.The manufacturer reserves the right to make any changes necessaryfor marketing or production reasons at any time without prior notice.

Nomenclature

Technical specificationsMechanical specificationsCasingMade of aluminium galvanised steel sheeting and oven po-

lymerised paint. This affords excellent protection againstcorrosion, along with its highly resistant internal structure,makes up a robust and long lasting machine.

CompressorOf the vertical hermetic reciprocating type, with refrigerantvapour cooled motor, crankcase heater and internal motorprotection. Mounted on vibration absorbers.

EvaporatorOf the plate heat exchanger type and manufactured in stainlesssteel. Evaporators are designed for 10 bar effective operatingpressure on the water side and 30 bars effective operatingpressure on the refrigerant side. They are insulated with closedcell foam.They are provided with two refrigerant circuits and a singlewater circuit.

CondenserCoils: Consist of several rows of copper tubes mechanicallyexpanded into rippled aluminium fins. Effective service pressureis 31 bar.Fans: Of centrifugal type with steel blower casing and fanwheel.Motors: Totally enclosed squirrel cage type, with currentoverload protection and lifetime lubricated bearings.YLCC models 40 and 81 includes direct driven motor-fans.Models 60 and 121 are driven by "v" belts and pulleys.

Power supply and unit control cabinetAll equipament required for unit control and electric motorstarting is factory wired and tested for proper operation.The control cabinet is manufactured in zinc coated sheet steelwith a coat of protective paint. All weather protection to IP44standard. Includes:- Main switch- Overloads- Contactors- Electronic two stage thermostat- Electronic antifreeze thermostat- Two high pressure cut-out- Two low pressure cu-out- Auto sequencing compressors- Lamps- Connencting blocks.

Cooling circuitIncludes two refrigerant circuits and a single water circu-it.Made of cooper tubing with 1/4" SAE access connections onthe high and the low pressure sides. It comprises the followingcomponents:- Discharge muffers.- Dehydrating filters.- Expansion valves.

RefrigerantThese units are supplied with an optimum charge of R-22 or R-407C refrigerant, for proper operation and maximum performancein different working conditions.

AccesoriesHigh pressure fansLow ambient kitIsolator supportsAir filters

4

(2) 200 Pa / 350 Pa

Blower motors

Condensercentrifugalblowers

Air cooledcondenser

Evaporator

Compressor

(1) R22 units: Mineral oilR407C units: Polyolester

(3) 200Pa units.Direct drived fan.

(Motor directly mounted to the fan casing)

H2NG294

H75G094

(3)

Main data

Type YLCC 40 60 81 121

Type R22 H25G094 H25G144 H2NG184

Type R407C H75G144 H7NG184 H7NG294

Theoretical displacement m3/h 29.31 43.16 58.25 88.35

Number 2

No. of cylinders 3 3 6 6

Revs per minute 1/min. 2 950 2 950 2 900 2 900

Oil charge per compressor (1) l 2.84 2.84 6.6 6.6

No. of loading stages 1

Number 1

Type Plate

No. of refrigerant circuits 2

Water volume per evaporator R22/R407C l 3.8/4.75 5.7/6.65 8.4 13.2

Refrigerant volume R22/R407C dm3 3.8/4.75 5.7/6.65 8.1 12.9

Number 2

Face area m2 1.021 1.021 1.61 1.61

No. of rows (3/8) 4 5 4 5

Number 2 2 4 4

DIA x WD 321 x 321 381 x 381 321 x 321 381 x 381

Air flow rate (200 Pa available) (350 Pa on order) m3/s 1.39 2.36 1.39 2.36

Number 2 2 4 4

Revs per minute l 950/1 420(2) 1 430 950/1 420(2) 1 430

200Pa/350Pa kW 1.1/1.5 3 1.1/1.5 3

Refrigerant charge for circuit R22/R407C kg 6.3/6 6.65/6.2 11 13.1

Operating weight Alu - Fins kg 653 714 900 1 100

Shipping weight kg 653 714 900 1 100

Length mm 2 456 2 456 3 212 3 212

Dimensions Width mm 829 829 980 980

Heigth mm 1 845 1 845 1 820 1 970

5

YLCC - 40 & 60

Model A B C D E F H

YLCC - 40 362 403 709 68 356 353 1 1/2" G

YLCC - 60 319 478 645 81 411 285 2"G

777

682

47,5

47,5

3001630

2230

300

(4) ø16,5

59.7

102 2035 102

A B C B A 216

2239 128

470 99

0

Water inlet

Water outlet

E

777

143 777 52

D F

H

1845

3094

563

323

7

General dimensions mm

6

YLCC - 81 & 121

Model A B C D E F G H

YLCC - 81 340 818 680 285.5 409 820 1 084 527

YLCC - 121 299 900 598 248 484 1 970 1 010 677

52,5

855

750

52,5

(6) ø16,5

2990

300300 1195 1195

2738129 129

806

8787

A B C B A

D

E

D

216 2996

3212

F

G71

6

1498 1498

30

750 115115

980

216

456

(1 1/2"G)

(1 1/2"G)

193

1100

H

Water inlet

Water outlet

General dimensions mm

7

YLCC-40 & 60

YLCC-81 & 121

0,8m

1m1m

1m1m1,

2m1m

1m

1m1m

Minimum installationSpace requirements

8

5 39 690 11.24 36 610 11.46 33 530 11.69 30 450 11.69 27 370 12.15

6 41 090 11.43 37 960 11.77 34 890 12.12 31 720 12.23 28 600 12.51

7 42 490 11.63 39 320 12.09 36 260 12.56 33 000 12.54 29 840 12.86

8 43 890 11.83 40 680 12.09 37 550 12.77 34 280 12.86 31 070 13.21

9 45 290 12.02 42 040 12.50 38 850 12.98 35 550 13.17 32 310 13.56

10 46 690 12.22 43 400 12.70 40 150 13.19 36 830 13.49 33 540 13.92

11 48 090 12.42 44 750 12.91 41 450 13.40 38 110 13.80 34 780 14.27

12 49 490 12.62 46 120 13.12 42 750 13.62 39 390 14.12 36 020 14.62

5 61 750 18.26 57 390 18.91 53 030 19.56 48 670 20.21 44 310 20.86

6 63 960 18.65 59 510 19.34 55 060 20.04 50 610 20.73 46 160 21.43

7 66 180 19.04 61 320 19.80 56 460 20.56 52 235 21.28 48 010 22

8 68 400 19.44 63 765 20.22 59 130 21 54 490 21.78 49 860 22.57

9 70 610 19.83 65 880 20.65 61 160 21.48 56 430 22.31 51 710 23.14

10 72 830 20.23 68 010 21.10 63 200 21.97 58 380 22.84 53 570 23.72

11 75 050 20.62 70 140 21.53 65 230 22.45 60 320 23.37 55 420 24.29

12 77 270 21.02 72 270 21.98 67 270 22.94 62 270 23.90 57 280 24.87

5 77 500 22.85 70 300 23.63 64 210 24.33 58 370 24.95 52 790 25.50

6 79 790 23.33 73 260 24.15 66 950 24.88 60 880 25.54 55 040 26.15

7 83 030 23.80 76 300 24.67 68 970 25.50 63 460 26.14 57 370 26.79

8 86 010 24.33 78 910 25.25 72 180 26.06 66 120 26.75 59 764 27.44

9 88 880 24.90 82 110 25.79 75 140 26.63 68 850 27.36 62 230 28.09

10 92 360 25.39 85 210 26.35 78 190 27.21 70 800 28.07 63 920 28.84

11 95 690 25.94 88 200 26.94 80 960 27.84 73 660 28.70 66 500 29.51

12 98 630 26.53 91 450 27.51 84 160 28.43 76 600 29.33 69 150 30.19

5 126 330 40.46 118 050 42 107 880 43.47 99 860 44.98 91 960 40.03

6 130 820 41.25 121 230 43.04 112 830 44.51 104 540 45.82 94 340 47.21

7 134 280 42.26 125 500 43.91 115 760 45.62 107 230 46.98 98 810 48.15

8 138 890 43.06 129 830 44.79 120 900 46.39 111 000 48 101 240 49.36

9 143 570 43.87 134 240 45.67 125 040 47.33 114 830 49.01 105 870 50.30

10 148 310 44.69 138 710 46.56 129 230 48.29 118 710 50.04 109 480 51.39

11 153 130 45.51 143 240 47.45 133 480 49.24 123 840 50.88 112 140 52.49

12 158 020 46.33 147 840 48.35 137 800 50.22 127 870 51.92 116 850 53.60

Capacity(w)

CONDENSING ENTERING AIR °C DB

MODEL

LEAVINGWATER °C

Capacity(w)

YLCC-40

YLCC-60

YLCC-81

Comp.Power(kw)

YLCC-121

3025 35 40 45

Comp.Power(kw)

Capacity(w)

Comp.Power(kw)

Capacity(w)

Comp.Power(kw)

Capacity(w)

Comp.Power(kw)

Cooling capacities based on DT= 5°K (water side)

Cooling capacities

9

Correction in °Cover the real inlet airtemperature at theoutdoor coil

20

30

35

Waterflow

1.16

1.27

1.33

Pressuredrop

Percentby weight

of ethyleneglycol (%)

Correction factors

1.035

1.075

1.110

% Flow rate 70 80 90 100 110 120 130

5 1.045 0.902 0.754

4 1.004 0.866 0.726

3 0.962 0.83 0.697

2 0.921 0.794 0.669

1 0.879 0.758 0.64

0 0.838 0.722 0.612

-1 0.795 0.681 0.574

-2 0.764 0.652 0.545

-3 0.734 0.623 0.515

-4 0.703 0.594 0.486

-5 0.673 0.565 0.457

-6 0.637 0.533 0.432

-7 0.608 0.506 0.410

-8 0.579 0.48 0.389

-9 0.55 0.453 0.367

-10 0.521 0.427 0.346

Cooling capacity correction factors

Outdoor air temperature (°C)Percent by weightof ethylene glycol(%)

Leavingchilled liqued

temperature (°C)

20

30

35

453525

Cooling capacity correction factors for outdoor air temperature and leaving chilled glycol solutions

Correction factors for water flow and pressure for ethyl-ene glycol solutions

Correction of the real air temperature in °C on entry into thecondenser coil for flow-rates different from the nominalones

5 3 1.5 0 -1 -2 -2.5

10

10 000 200 10 000 350

10 800 175 11 000 330

11 400 150 12 000 310

12 000 125 13 000 280

12 400 100 14 000 250

12 900 75 15 000 220

13 200 50 - -

17 000 210 16 000 365

18 000 185 17 000 335

19 000 160 18 000 305

20 000 135 19 000 280

21 000 110 20 000 255

22 000 80 21 000 230

23 000 50 - -

20 000 200 20 000 350

20 900 175 22 000 330

22 100 150 24 000 310

23 200 125 26 000 280

24 100 100 28 000 250

25 200 75 30 000 220

25 900 50 - -

34 000 210 32 000 365

36 000 185 34 000 335

38 000 160 36 000 305

40 000 135 38 000 280

42 000 110 40 000 255

44 000 80 42 000 230

46 000 50 - -

UnitStandar unit (1) High pressure (2)

Air flow (m³/h) External static pressure (Pa) Air flow (m³/h) External static pressure (Pa)

(1) Standard motor-fan assembly(2) High pressure motor-fan assembly (accesory)

YLCC-40

YLCC-60

YLCC-81

YLCC-121

YLCC available external static pressure

11

Installation instructionsGeneralInspectionYLCC chillers are shipped fully assembled, to be installed onsite. Units are pre-charged with R22 or R407C refrigerant in thecorrect quantity required for operation.Inspect the unit upon arrival for shipping damage and ensurethat all ordered components have been received.Any damage should be reported immediately to the carrier, asgoods are shipped ex-works at purchaser's risk.York accepts no responsibility for shipping damage, even incases where the factory has arranged for shipping.

HandlingYLCC series chillers are designed to be lifted using cables,rollers or fork lift truck.Cables length shall be such that they do not form an angle ofless than 45 deg to the horizontal when under tension.Care should be taken to avoid damaging the sidemountedcondenser coils and panelling when lifting and moving themachine to the installation site. Sides should be protected withstiff cardboard or plywood.

PositioningUnit is designed for floor mounting in indoor locations . Withducts in discharge air and also return air if necessary.Do not install unit in air wells, courtyards or other restrictedspaces where machine sound level would be increased byreverberation off walls or where hot air expelled by fans couldrecirculate back into unit.

ClearancesWhen installing each unit, clearances should be left for:1.- Air intake to the unit.2.- Water, drainage and electric connections.3.- Servicing.

Warning signsThe following signs indicate the presence of potentially dan-gerous conditions for the users or service personnel.Whenever found on the unit itself, keep in mind the warningindicated by each one.

This sign indicates an electrical riskor danger.

Caution: The unit has a remote con-trol system and can start automati-cally. Two minutes prior to havingaccess to the interior, the powersupply should be disconnected soas to avoid any contact with the fanturbine in operation.

Caution: Fan in operation.

Caution: It is compulsory to read theinstructions prior to any handling.

Caution: Not to touch the hot sur-faces.

Caution: Lifting point.

InstallationBefore installing the unit ensure that the structure is capableof supporting the unit's weight.Special mounts are not normally required. If the unit is to beinstalled directly above offices or living quarters, however, it isadvisable in critical cases to set the unit on spring dampermounts (supplied as accessories) to minimize vibration trans-mission to the structure.When the unit is to be installed on the ground, a concrete slabmust be provided to ensure uniform weight distribution.

12

SAFETYVALVE

PURGER

THERMOMETER

WATER GAGE

WATER GAGE

FLEXIBLEJOINT

EMPTYING

FLOW SWITCH

EXPANSIONVESSEL

FILTER

CIRCULATIONPUMP

AUTOMATICFILLINGGROUP

ACCUMULATORTANK(IFF NECESSARY)

Protection of the environment PackingPacking is made of recyclable material. The disposal of sameshould be carried out in accordance with the regulations onselective residue disposal established by the local authorities.

Disposal of the unitWhen dismantling after a long service life, its componentsshould be ecologically salvaged. The cooling circuit is full ofR22 or R407C refrigerant which should be salvaged and,finally, returned to the gas manufacturer for recycling.Oil will remain in the airtight compressor so, it will be returnedalong with the sealed circuit.The air conditioning unit will be deposited wherever estab-lished by the local authorities for its selective disposal.

Hydraulic connectionsThe hydraulic connections of the water intake and outlet of theplant should be carried out respecting the intake and outletdirections indicated on the side of the unit.Galvanized iron tubing or copper tubing can be used, withdimensions no lower than the available connections, andkeeping in mind the pressure drops of the available connec-tions, and keeping in mind the pressure drops of the internal

interchanger and of the installation.Pump dimensioning should be carried out considering a nomi-nal flow that allows ∆t of 5°C.It is convenient that the tubing connection be carried out bymeans of antivibratory couplings.In all cases, a flow switch should be installed so as to avoid thepossibility of operation without water circulation.In the water feedback tubing, an expansion vessel that isadequate for the total volume of the water in the installationshould also be installed.During the winter season, with outdoor temperatures below0°C, precautions should be taken to avoid the water fromfreezing in the tubing networks and inside the inner inter-changer of the cooling plant.The following solutions are usually applied:a) Empty the installation.b) Fill the circuit with an antifreeze solution (glycol).Note: See hydraulic connections diagram.

Circulating pumpFor proper operation of the YLCC units it is essential to selectan adequate pump that gives sufficient flow and pressure to thehydraulic circuit. To do this, use the data in the followingdiagram.

Hydraulic connections

13

Hydraulic circuit flow rate/pressure characteristics YLCC units

YLC

C 1

21

5000

6000

1040

0070

0080

0090

0010

000

1100

0

FLO

W R

ATE

(I/h

)

1200

013

000

1400

015

000

1600

017

000

1800

019

000

2000

022

000

2300

024

000

2500

0

2030405060

YLC

C 4

0Y

LCC

60

YLC

C 8

1

Dp Kpa

14

YLCC 40 60 81 121

Nominal water flow rate l/h 6 230 9 710 11 860 19 910

Nominal water side pressure drop kPa 33 31.5 23.5 34.5

MAXIMUM ADMISSIBLEINCLINATION

120

Water connectionConnect water lines to water inlet and outlet on the side of theunit.Water system must be provided with the following:1- Water circulation pump of appropriate capacity and hydrau-

lic head sufficient to the system.2- Water safety valve.3- Expansion tank capable of permitting volume of water in

system to vary freely with changes in temperature.The following measures should also be taken:- Install air vent valves at highest points of lines.- Install shut-off valves on water connection lines.- Provide suitable drain plugs or cocks at lowest points of

lines.- Insulate lines to prevent heat loss and condensate forma-

tion.

Standard performance

Before filling lines, ensure that they do not contain impuritiessuch as sand, stones, rust scales, loose solder or othermaterials which could damage heat exchanger. It is advisableto by-pass the unit when flushing out system. Close-meshscreen filters (16 apertures per cm) should be installed on coldwater return lines. Circuit should be filled with suitably treatedwater.

Flow switchThe hydraulic circuit to which the YLCC unit will be connectedwill be equipped with a flow switch that will not allow theconditioner to operate without the corresponding water flow.This installation is absolutely necessary, as well as theverification of its correct adjustment and operation upon startup of the installation.

Mounting recommendations

Application in YLCC unitsThese flow switches can be used in tubing through which wateror glycol circulates. They are designed to serve as lockouts;that is to say, as a protection against a lack of liquid circulation.This flow switch should be mounted in horizontal tubing, in atubing section with a straight extension of at least five times thediameter of the tubing at either side of the flow switch. Do notlocate it near valves, elbows or holes. The switch should beinstalled in such a way that the terminals are accessible foreasy connection. The control has a mark with the flow direc-tion. Adjust the length of the tab to the size of the tubing towhich it will be connected, as per the manufacturer's recom-mendations.No part of the tab should be in contact with the tubing norpossible narrowings of same. Screw the flow switch in positionin such a way that the plane of the tab forms a right angle withthe flow. The arrow located on one side of the casing shouldpoint in the flow direction.

Electrical installationEach unit is supplied with a control box to which the electricalsupply is connected by means of an automatic circuit breakerand a fused main switch.The electrical installation should be carried out in accordancewith the corresponding wiring diagram of the unit, keeping inmind the corresponding general characteristics and operatinglimitations (see the corresponding table).All national regulations in force should be followed.

Loose cables can cause overheating of the terminals or incorrectoperation of the unit. They can also produce a fire hazard. Therefore,make sure all cables are connected firmly.

Setting and operating instructions of thecontrol thermostat (2 cooling stages)1- DISPLAY. Display the value of the connected probe

(coincident with the water return temperature).2- DECIMAL LED. Lights when the controlled variant is

displayed with decimal precision.3- INVERSE LED. Is inoperative when, as in this case, the

instrument is programmed to control water chillers (Mode1, direct operation).

4- DIRECT LED. Flashes when one of the control stages isactivated.

5- "SEL" KEY. Display and/or adjusts the set point. Ifpressed along with the PRG-Mute key for 5 seconds, the

15

Dif. (P1)

Set (St 1)

OUT1 OUT2

D D

°C

PRGmule

3 4 5

8

12

CAREL

SELreverse direct

6

7

Ir W

pasword can be entered so as to access the configurationparameters (parameters with "Cxx" type codes).

6- "PRG/MUTE" KEY. Pressing for 5 seconds gives accessto the most frequently used parameter menu (parameterswith "Pxx" type codes). In the case of an alarm, cancel thealarm buzzer. Resets the other alarm indications if pressedonce the cause ceases.

7- "UP ARROW" KEY. Increases the set point value, or thevalue of any other parameter selected.

8- "DOWN ARROW" KEY. Increases the set point value, orthe value of any other parameter selected.

Description of the front of the instrument

ProgrammingOperating modeAlthough this instrument has 9 different operating modes, it issupplied preset to Mode 1; that is to say, direct operation,which is the most adequate for the setting and control of liquidchilling plants.If, due to erroneous manipulation, the control has beenchanged from Mode 1 to any of the other 9 available operatingmodes, for correct operation of the chiller it will be absolutelynecessary to reset Mode 1, in accordance with the followinginstructions:a) Press keys "5" and "6" simultaneously for 5 seconds.b) "0" will appear on the display.c) Enter the password. That is to say, press key "7" until "22"

is displayed.d) Press key "5" to confirm the password.e) If this process has been followed correctly, code "CO" will

appear on the display. Should this not be the case, repeatall steps, starting with a). CO is the parameter thatcorresponds to the Operating Mode. To load Mode 1 on theinstrument, follow these steps:

f) When CO appears on the display, press key "5".g) A number from 1 to 9 appears on screen, identifying the

operative Operating Mode at that particular moment.h) Press key "7" or "8" until Mode 1 appears.i) Press key "5" to confirm the data.j) Press key "6" to conclude the operation and save Operat-

ing Mode 1.

Regulator operation

As shown in the drawing, the fundamental operating param-eters are the set point (St1) and the differential (P1).In standard operation, the regulator activates the outputs if theregulated magnitude, surpasses the Set Point. By setting thedesired Set Point (St1), the outputs are activated in accord-ance with the differential of P1. As can be seen, activation ofthe relays is equally distributed within this differential. Whenthe controlled magnitude is equal to or above St1+P1, alloutputs are activated. On the other hand, if the controlledmagnitude, based on values over St1, starts to decrease,eventual active relays are deactivated as said magnitudecomes closer to St1, all outputs are off. The "direct" LEDflashes a number of impulses equivalent to the number ofactive outputs.

Description of the work parametersTo adapt the operation of the regulator to the demands of theinstallation, the Set Point (value of origin = 12°C) and thedifferential (value of origin = 2°K) can be modified.There are other factory-set parameters that can be adapted tothe needs of the installation. Nevertheless, the modification offactory-set values implies a certain risk, and any changeshould be previously consulted with an authorized Clima RocaYork technical service.

Work parametersHigh alarm set and low alarm setIt is possible to select a maximum and minimum value for theregulated magnitude.When the instrument detects a value that is not within the setlimits, it display an alarm code and generates an acousticalarm. The high and low values are considered absolute valueand, therefore, to avoid the intervention of the alarm limitsduring normal use, these must not be within the interval limitedby the Set Point - Differential and Set Point values.

Alarm differentialThis is the hysteresis set for the alarms. A minimum differen-tial is needed to avoid oscillations; that is to say, successiveon and off operations of the alarms due to slight variations ofthe regulated magnitude. The regulators are supplied withalarm differentials set to 2°K. The high and low alarms haveautomatic reset; that is to say, when the regulated magnitudeis within the maximum limits once again, the alarms areoverridden automatically.

Alarm activating delay timerAllows delaying the alarm signals. The regulator activates thealarms only if the alarm conditions persist during a set time. If,

16

Param.

St1

CO

P2

C4

C5

C6

C7

C8

C9

C12

C13

P14

C17

C18

C19

C10

C11

Description

Set point

Operating mode

Absent

Absent

Type of regulation(0 = Proportional; 1 = Proportional+integral)

Delay between the start up of differentcompressors

Minimum delay between start ups ofthe same compressor

Minimum off time of the same com-pressor

Minimum on time of the same com-pressor

Condition of the relays in case of probealarm0 = All relays deactivated;1 = All relays activated

Rotation of the compressors0 = Rotation inactive;1 = Rotation active

PWM operating cycle time

Type of probe

Probe calibration or offset

Probe reply speed(antiparasitic filter)

Selection of temperaturescale 0 = °C; 1 = °F

Absent

Minim.

10°C

-

-

-

0

0 sec.

0 min.

0 min.

0 min.

0

0

-

-

-99

1 sec.

0

-

Maxim.

15°C

-

-

-

1

999 sec.

15 min.

15 min.

15 min.

1

1

-

-

+99.9

14 sec.

1

-

12°C

1

-

0.5

0

5 sec.

5 min.

1 min.

0 min.

0

1

20

0

0.0

5 sec.

0

0

Oforig.

Parameter

Set point

Differential

Probe calibration

Low alarm

High alarm

Alarm differentials

Alarm delays

Code

St1

P1

P14

P25

P26

P27

P28

Factory-set value

12°C

2°K

0.0

-100°C (1)

999°C (1)

2°K

60 min. (1)

during this delay period, the magnitude falls within the setlimits, the countdown is cancelled.

Probe calibrationThis allows varying the indication displayed by the instrumentso as to compensate errors or differences with regard to othermeasuring instruments.

Modification of the set point and the work pa-rametersFor greater comfort, the Set Point and other work parametersare factory-set.

(1) These are the maximum set values. Should these protection parameterswere to be used, adjust them to the needs of the installation.

To modify the Set-Point, proceed as follows:a) Press key "5" for a few seconds. "St1" will appear on the

display.b) Release key "5". The display will flash the present Set Point

value.c) Press key "7" or "8" to obtain the desired value.d) Press key "5" to confirm the new St1 value.To modify the differential and work parameters, proceed asfollows:a) Press key "6" for 5 seconds. "P1" will appear on the display.b) Press key "7" or "8" to display the parameter to be modified.c) Press key "5". The display will show the present parameter

to be modified.d) Press key "7" or "8" to obtain the desired value.e) Press key "5" to confirm this data.f) The display will show the identification code of the modified

parameter.g) Repeat operations b) to f) if you wish to modify any other

parameters.If not, go on to point h).

h) Press key "6" to save the modified data and return to normaloperation.

List of parametersTo access the complete list of parameters of the regulator,proceed as follows:a) Press key "5" and "6" simultaneously for 5 seconds.b) "0" will appear on the display.c) Enter the password. That is to say, press key "7" until "77"

appears on the display.d) Press key "5" to confirm the password.e) If this process has been followed correctly, code "CO"

which the first parameter on the list, will appear on thedisplay.

To display the values of the parameters and their eventualmodification, follow the procedure described previously in the"Operating Mode" section. Analogically, to confirm the modi-fications made, it is necessary to end the procedure bypressing key "6".

List of parameters (1/2)

17

Absent

Check/solutionCause

- Cut or short cicuitedprobe cable

- Error in connection- Defective probe

Probe error

Mess.

Er0

Description

Check connectionsand probe

Er1 Absent Absent

Memory errorEr2 - Power supply dropduring programming

- Electrical interference

Enter the originalvalues for the instru-ment, and turn it onby pressing key "6".Reprogramme

If Er2 persists, re-place the instru-ment

External alarmactive

Er3 - A contact connectedto the digital entry isopen

Check externalcontact

High alarmEr4 - The entry has supas-sed P26 by > P28

Check parametersP26 and P28

Low alarmEr5 The entry is bellow P25by > P28

Check parametersP25 and P28

OUT 2 OUT 1

POWER

220240~

DIG2 COM DIG.1

1 2 3

SERIALLINK

PROBE

c c

C21

C22

C23

C24

P25

P26

P27

P28

C29

C30

C31

C32

C33

C50

C51

-

-

-

-

-100°C

P25

Set point minimum value

0.1°K

0 min.

0

-

0

1

-

-

-

-

P26

999 °C

99°K

120 min.

10°C

15°C

-50

90

-50°C

90°C

2°K

-

1

16

1

60 min.

0

0

1

0

3

-

Description

Set point maximum value

Absent

Absent

Low alarm set

High alarm set

Alarm differential

Alarm activation delay

Absent

Condition of the output relays incase of digital entry alarm: sameoptions as parameter C10

Direction for serial connection

Do not modify this parameter

Keyboard setting

Digital entry control (In the case of analarm, the condition of the relays willdepend upon parameter C31)0 = Entry inactive1 = Immediate external alarm. Autoreset2 = Immediate external alarm. Manuelreset3 = Delayed external alarm. (P28).Manual reset4 = On/Off regulation with regard todigital entry condition

Absent

0

-

-

4

-

-

Oforig.

0

Param. Minim. Maxim.

List of parameters (2/2)

Trouble shooting and control resetProblem: The keyboard is inoperativeCheck: See parameter C50Problem: The reading fluctuates continuouslyCheck: The reading could be influence by electromagneticinterferences. Modify parameter C17 to a lower value.Problem: The high and low alarms are not indicatedCheck: The alarm delays could be excessive. See parametersP25, P26 and P27.Problem: Outputs are not activateCheck: The protection time settings of the outputs. Param-eters P25, P26 and P27.Problem: The outputs act too oftenCheck: The differential is too small. Increase and/or modify theoutput protection time settings. Parameters C6, C7 and C8.Problem: The reading never reaches the Set Point valueCheck: Excluding sizing problems of the installation, differen-tial P1 is to large.Problem: The reading on the display does not adjust to thereal valueCheck: This could be a problem of the sensor installation or thecalibration of same.Adjust by means of parameter P14.

Four-stage thermostat diagram

Alarm conditions, causes and solution

18

1) YLCC 40/60 H75G (R-407-C compressors); H25G (R-22 compressors). YLCC 81/121: H7NG (R-407C compressors); H2NG (R22 compressors)2) 200 and 350 Pa3) Nominal conditions at 7°C chilled water outlet temperature., 35°C ambient temperature4) Maximum condition at 15°C chilled water outlet temperature, 46°C ambient temperature5) Amps. at 350 Pa.

1) YLCC 40/60 H75G (R.407-C compressors); H25G (R22 compressors).

40 60 81 121

30 51.6 62 107.6

34 62 71 122

15.6 26.4 31.4 57.6

18.6 32.7 38.2 70

Model

YLCC

CurrentA

PowerInput kW

Nominal (3)

Nominal (3)

Maximum (4)

Maximum (4)

40 - 81 1.1(200Pa) / 1.5(350Pa) 3.45 17.2

60 - 121 (2) 3 6.4 35

ModelYLCC

Standard blowers

Nominalpower

kW

Max. runningcurrentA (5)

Max. startingcurrentA (5)

Powerinput at

nominal cond.per comp.

kW

Power inputat maximum

cond. percomp.

kW

Nominalcurrent percompressor

A

Maximumcurrent percompressor

A

Startingcurrent

A

Max. fusesize

ASystem Voltage

V

40 1 + 2 H-G094 400 6.3 11.5 8.1 14.3 95 40

60 1 + 2 H-G144 400 10.2 19.4 14 25.6 126 63

81 1 + 2 H-G184 400 12.7 24.1 16.8 29.5 125 80

121 1 + 2 H-G294 400 22.8 41 29.6 49.5 215 125

ModelYLCC

(1)Compressor

(Bristol)

Electrical connectionsCautionEnsure that power supply is off before working on system.It is the installer's responsibility to ensure that all externalwiring complies with applicable safety regulations.Equipment must be provided with an effective earthconnection.THE MANUFACTURER IS NOT RESPONSIBLE FOR IN-JURY OR DAMAGE OF ANY KIND RESULTING FROM

FAILURE TO OBSERVE THESE PRECAUTIONS.Machine complies with CE directives.The following connections are required:- One three-phase line + earth for power circuit supply.- Electrical conductors for external cutout devices.Supply lines shall consists of insulated copper conductorssized for maximum current draw. Minimum cable cross sec-tion shall be as shown on "ELECTRICAL DATA" table.

Electrical main data

Electrical data, compressor YLCC

Electrical data fans

19

YLCC-40 & 60, 400.3.50

I-1652/eYLCC-40/60 400.3.50

THE COMPONENTS INCLUDED IN THESE BOXESARE NOT SUPPLIED BY THE MANUFACTURER

FS:

H1:

HP1:

HP2:

IO:

LP1:

LP2:

H2,H3H4,H5:

E1:

E2:

ECB:

FC1:

M1:

M2:

M3:

M4:

Q5:

R1:

R2:

R3:

R4:

RM:

S:

T:

STAGE 1

STAGE 2

PUMPCONTACTORINTERLOCK

FREEZE PROTECTIONTHERMOSTAT

FLOWSWITCH

ON-OFFINDICATOR LAMP

PRESOSTATFAILURE LAMP

HIGH-PRESSURECUT-OUT 1

HIGH-PRESSURECUT-OUT 2

FIELDWIRING

LOW-PRESSURECUT-OUT 1

LOW-PRESSURECUT-OUT 2

COMPRESSOR 1

COMPRESSOR 2

FAN 1

FAN 2

MAIN SWITCH

COMPRESSORCRANKCASEHEATER 1

COMPRESSORCRANKCASEHEATER 2

TEMPERATURESENSORWATER OUT

TEMPERATURESENSORWATER IN

HANDRESET

REMOTESWITCH

2-STAGETHERMOSTAT

L1 L2 L3N

L1

L1

L2

L2 L3

L3 N

N

Q7

Q6

30 m A

5 x B mm2

400V,3 ~,50 Hz,N,

1

1

L1

F12 A

3

2

4

H1

N

R2

M43 ~

1

2

3 5

4 6K4

(22)

1

2

3 5

4 6Q4

R1

E2 E1OV

2 3

FC

3

R4

IO

3 5 6 7 8 9 10 16 17 18 21 23 25 26

ECB

K121

22

1

2

3 5

4 6Q1

M13 ~

1

2

3 5

4 6K1

(26)

1

2

3 5

4 6Q3

M33 ~

1

2

3 5

4 6K3

(21)

1

2

3 5

4 6Q2

M23 ~

1

2

3 5

4 6K2

(24)

K221

22K3

K1

13

14

K4

K2

13

14

(8) (14)

NO NC

C

10H5

H4

P

HP2

28 bar

9

P

LP2

2 bar

8

K2

Q414

(12)

13

NO NC

C

7H3

H2

P

HP1

28 bar

6

P

LP1

2 bar

5

K1

Q314

(3)

13

220

1 23 4

5 6

13 14

(14)(13)

(21)

(15)

21 22(12)

1 23 4

5 6

13 14

(6)(5)

(7)

21 22 (1)

1 23 4

5 6

13 14

(10)(9)

(11)

1 23 4

5 6

13 14

(18)(17)

(22)

(19)

11 12 13 14 15 19 20 22 24 27 28

YLCC-40

YLCC-60

Q1, Q2(A)

Q3, Q4(A)

Q5(A)

"B"(mm2)

32

47

4

6

63

125

16

25

FS

S

T

Q5

Q7(A)

40

63

5

RM

6

4

R3

OFF

ON

8

1

2

Wiring diagram

20

YLCC-81 & 121, 400.3.50 (1 of 2)

L1 L2 L3N

L1

L1

L2

L2 L3

L3 N

N

Q7

Q6

30 m A

5 x B mm2

400V,3 ~,50 Hz,N,

1

L1

N

M63 ~

1

2

3 5

4 6K6

(25)

1

2

3 5

4 6Q6

IO

3 5 6 7 8 9 10

1

2

3 5

4 6Q1

M13 ~

1

2

3 5

4 6K1

(28)

1

2

3 5

4 6Q4

M43 ~

1

2

3 5

4 6K4

(23)

1

2

3 5

4 6Q2

M23 ~

1

2

3 5

4 6K2

(26)

11 12 13 14

Q8

YLCC-81

YLCC-121

Q1, Q2(A)

Q3, Q4(A)

Q7(A)

"B"(mm2)

40

63

4

7

80

125

35

50

Q5, Q6

M53 ~

1

2

3 5

4 6K5

(24)

1

2

3 5

4 6Q5

M33 ~

1

2

3 5

4 6K3

(22)

1

2

3 5

4 6Q3

2 4

(26)

13

14

(26)

13

14

(26)

13

14

(28)

13

14

(28)

FAN MOTOR

M1:

M2:

M3:

M4:

COMPRESSOR 1

COMPRESSOR 2

FAN MOTOR

M5:

M6:

FAN MOTOR

FAN MOTOR

IO: FIELD WIRING

K: CONTACTOR

Q8: MAIN SWITCH

I-1913/a (1 of 2)YLCC-81/121

400.3.50THE COMPONENTS INCLUDED IN THESE BOXESARE NOT SUPPLIED BY THE MANUFACTURER

Wiring diagram

21

YLCC-81 & 121, 400.3.50 (2 of 2)

16 21 25 28 3117 22 23 24 26 27 29 30 32

(9)

(31) (32)

(2)

(13)(6)

(4) (11)

(28)

(26)

(26) (28)

15

E1: STAGE 1

E2: STAGE 2

ECB: PUMPCONTACTORINTERLOCK

F1: FUSE

FC: FREEZECONTACTORINTERLOCK

FS: FLOWSWITCH

H1: ON-OFFINDICATORLAMP

H2,H3H4,H5: PRESSOSTAT

FAILURE LAMP

HP1: HIGH-PRESSURECUT-OUT 1

HP2: HIGH-PRESSURECUT-OUT 2

1 2

(12)

13

1 2 (17)3 45 6

14

(18)

(19)(22)

1 23 45 6

13 14

(10)

(22)21 22 (17)

1 23 45 6

13 14 (24)21 22 (16)

(3)3 45 6

13 14

(5)

1 23 45 6

13 14

(7)

1 23 45 6

13 14

(14)

LP1: LOW PRESSURECUT-OUT 1

LP2: LOW PRESSURECUT-OUT 2

MC1: COMPRESSORPROTECTIONMODULE 1

MC2: COMPRESSORPROTECTIONMODULE 2

R1: COMPRESSORCRANKCASEHEATER 1

R2: COMPRESSORCRANKCASEHEATER 2

R3: TEMPERATURESENSORWATER OUT

R4: TEMPERATURESENSORWATER IN

RM: HAND RESET

S: REMOTE SWITCH

T: 2- STAGETHERMOSTAT

I-1913/a (2 of 2)YLCC-81/121

400.3.50

1

S

L1

F12 A

3

2

4

ECB

220 OV

2 3

R4

NO NC

C

7H3

H2

P

HP1

28 bar

6

P

LP1

2 bar

5

NO NC

C

10H5

H4

P

HP2

28 bar

9

P

LP2

2 bar

8

H1 K3A1

A2K5

A1

A2

K2

13

14

13

14

E2 E1

T

FC

3

5

RM

6

4R3 OFF

ON

8

1

2

N

A2

13

14Q3(5)

13

14Q4(7)

M1

M2

K2A1

13

14Q5(12)

13

14Q6(14)

M1

M2MC1 MC2

K1A1

K6A1

A2K4

A1

A2

K1(2)

FS

22 22

K1 K2

R1 R2

A2

L1

L2H1

MC1

M1

M2

L1

L2H1

MC2

M1

M2

21 21

Wiring diagram

22

ON

ELECTRICALSUPPLY

CAUTION

Voltagelimits Chilled liquid

temp.difference

Minimum °C Maximum °C

Nominal at400

Minimum Maximum Minimum °C Maximum °C Minimum °C Maximum °C

Entering air temp."DB coil"

Leaving chilled water temp.

Model

342 436 10 46 5 15 3 7YLCC

Note: At water temperatures lower than nominal temperatures, it is recommended to always use glycol type antifreeze.

Operating instructionsStartingMACHINE MUST BE STARTED BY TRAINED PERSONNELFROM AUTHORISED YORK CENTRES.FAILURE TO SATISFY THIS REQUIREMENT WILL AUTO-MATICALLY VOID THE WARRANTY.Operations performed by York service personnel are limited tomachine starting, and do not include other work on systemsuch as electrical connection, water connection, etc.

Preliminary checksThe following operations must be performed before starting themachine.1) With master isolating switch off, check that electrical

terminal clamps are tight and that all mobile parts ofcontactors move freely.

2) Proceeding as described, check that voltage and phaseunbalance of chiller supply line are within the limits indi-cated in this manual.

3) Check that all auxiliary circuit components (pumps, userequipment, filters, expansion tank and liquid receiverwhere provided) have been correctly installed as advisedby the manufacturer.

4) Connect clean (non-energized) contacts of flow switch andpump thermal overload cutout.

5) Check the water circuit is full and that fluid circulates freelywith no signs of leakage.If ethylene glycol antifreeze is used, check that thepercentage concentration is correct.

6) Check that pump direction of rotation is correct, and allowfluid to circulate for at least 24 hours (12 hours for eachpump). Then clean strainers on pump suction.

Limits of use

MaintenanceRegular maintenanceBefore shipping, units are thoroughly tested and inspected toguarantee that they leave the factory in perfect working order.To ensure that the unit can provide years of satisfactoryservice, however, a number of regular maintenance operationsmust be carried out.THE INSTRUCTIONS GIVEN BELOW ARE INTENDED FORTHE END USER. ALL MAINTENANCE OPERATIONS MUSTBE FAITHFULLY PERFORMED AT REGULAR INTERVALSTO AVOID COSTLY REPAIRS OR INVALIDATING THEWARRANTY.No special training is required to perform maintenance opera-tions.

Start up process- Connect the main and ground lines to the terminal grids

located in the control box.- Before start up, connect the main switch so as to energize

the electric heater of the compresor case.The compressor should not be started until after aminimum of eight hours.The object of this is to evaporate the liquid refrigerant thatmay have been mixed with the compressor oil.

- Set the temperatures at which the water is to feed back thethermostat dial.

Connection:To heat the system, the electrical supply mustbe switched on at least 8 hours before theconditioner is put into operation. Leave thesupply connected unless you are going toleave the conditioner idle for a long period oftime.

Condenser coil inspection and cleaningTo ensure effective condenser coil operation and maximumheat exchange, surfaces must be kept free from leaves, lint,insects, scaling and other contaminants.In addition to increasing power consumption, fouled coils cancause the maximum pressure alarm to cut in, shutting downthe unit.To clean the coils, blow compressed air parallel to the aluminumfins and in the direction opposite to normal air circulation. Avacuum cleaner can be used when working from the outside.Take care not to damage the aluminum fins during cleaningoperations.

Evaporator inspection and cleaningTo determine heat exchanger cleanliness, check fluid tem -

23

TROUBLE PROBABLE CAUSE REMEDY

A. Compressor stops without ap-parent cause

1. Electronic control system malfunc-tion

2. Compressor malfunction

1. Contact authorised Service Center2. Contact authorised Service Center

B. Excessive noise and vibration 1. Foreign matter in fans2. Noisy compressor3. Vibration transmitted to floor and

walls

1. Remove foreign matter2. Contact authorised Service Center3. Check that mounting feet are cor-

rectly installed

C. Blower does not turn 1. Electrical circuit problems2. Internal thermal cutout activation

1. Check connections2. Contact authorised Service Center

D. Cooling or heating capacity re-duction

1. Compressor failure2. Soil in evaporator water circuit.3. Condenser coil clogged

1. Contact authorised Service Center2. Clean evaporator water circuit

chemically3. Clean the coil

E. Water temperature difficult orimpossible to control

1. Incorrect thermostat setting2. Incorrect temperature differential

across exchanger inlet and outlet3. Electronic control system malfunc-

tion

1. Check temperature setting on con-trol panel

2. Check water flow rate and watercircuit filling

3. Contact authorised Service Center

F. Difficult water circulation 1. Air in circuit2. Deposits or impurities in the evapo-

rator

1. Bleed air through the bleeding valve2. Wash the evaporator in countercur-

rent

G. Unit does not operate 1. Water circulation fails2. The flow switch does not work

1. Check pump2. Check flow switch

peratures at exchanger inlet and outlet and compare withevaporation temperatures.For effective heat exchange, there should be a difference of 5to 7°C between the leaving water temperatures and thesaturated evaporation temperature. A greater difference indi-cates that soil on the heat exchanger has led to a loss ofefficiency.Cleaning must be performed by specialised personnel, aschemical treatments are involved.

Refrigerant and oil chargeEach unit is supplied with a full charge R22 or R407C

refrigerant. Use specific oil for each refrigerant, mineral orpolyolester oil.Do not top up or charge refrigerant or oil if refrigeratingcircuit operation is normal and no maintenance or servicinghas been required.Under normal operating conditions, refrigerant and oil chargeswill last the life of the unit.Should it be necessary to re-charge refrigerant as a result ofleakage, adhere to the values shown on the unit data plate andin main data table.Before recharging the refrigerant circuits, flush both high andlow pressure sides and pull a vacuum of at least 500 micronHg (mercury column).Trouble / Shooting

Notice:For any other problems and/or technical assistance, call an authorised York SERVICE CENTER. Only authorized YORKSERVICE CENTERS can provide the trained personnel and equipment needed to perform machine maintenancecorrectly and ensure perfect operation.

24

ACCESORIESHIGH PRESSURE FANS (350 PA)YLCC 40/81The standard units (200 Pa) are equipped with fans with directlycoupled motors. For this reason, the 350 Pa accessory shouldsubstitute the entire ventilation system. It includes fans, motor

pulleys, fan pulleys, belts and sheet supports for fan-motorassembly.

YLCC 60/121This accessory includes fan pulleys and belts. The fan, motor,sheet supports and motor pulleys are the same as thoseincluded in the 200 Pa standard model.

YLCC high pressure fan-motor assembly

YLC

C 4

0/81

= 4

10

YLC

C 4

0/81

= 4

15

YLCC 40/81

YLCC 60/121

135

180

YLC

C 6

0/12

1 =

460

YLC

C 6

0/12

1 =

470

25

YLCC A B C D E F G H I

40-60 190 268 580 543 25 580 98 100 172

81-121 190 230 1040 450 150 680 98 200 150

30°

DRILL HOLES AND SCREWTHE DAMPER AND THE PISTON

PRESSURE OPERATOR(PISTON)

DAMPER

COMPRESSORDISCHARGELINE

COMPRESSORDISCHARGELINE

1/4" SAE HIGH PRESS.SCHRADER CONNECTOR

INSTALL DEPRESSOR

PISTON SUPPORT

COPPER PIPEPRESSURE CONNECTION

PISTON 2PISTON 1

B C D C B

E

F

I

H

G

A

LOW AMBIENT KITThis accessory allows operation of the unit when the outdoorcondensation air temperature is below 10º C. It is comprisedof two sets of dampers and pistons: one set for each compres-sor or cooling circuit.The dampers should be fitted on the impulse side of each one

of the ventilation systems. These dampers are in turn acti-vated by the corresponding pistons, that either open or closethe slits of the dampers in accordance with the condensingpressure of their corresponding compressors. This adjusts orlowers air flow until an adequate condensing pressure isreached.

26

12 MA

94 (

MA

X)

82+

3 (M

IN)

110

140

100

(2)ø10

YLCC 40/80 YLCC 81/121

300

777

68247,5 47,5

1630

2230

300

(4) ø16,5

855

75052,5 52,5

300

2990

300

(6) ø16,5

1195

1195

ISOLATOR SUPPORTSWhenever it is necessary to isolate and suppress vibrationsand noise produced by the YLCC unit to a maximum, a set ofsteel spring isolators can be used, which should be installedbetween the supporting chassis of the unit and the base or floorwhere the YLCC unit is to be secured. This base should be solidand sized in accordance with the weight to be supported. Steelbolts are used to secure the isolators to the base and chassis.The isolators for the YLCC 40/60 unit are comprised of 4springs, and the YLCC 81/121 of 6. The springs should beplaced and fastened in the holes drilled in the base, inaccordance with the following distribution.

27

YLCC FILTER SERVICINGa) Remove screws from side cover filter A or B.b) Remove side cover filters A or B.c) Pull off and remove dirty filters.d) Install clean filters.e) Install side cover filter A or B once again.

FILTER DIMENSIONS(3 units per Kit)

C = MINIMUM CLEARANCE FOR ACCESS AND SERVICING OF THE AIR FILTERS

YLCC-40/60 = 750 YLCC-81/121 = 1000

A

B

C

All data subject to change without notice.

AIR FILTERSWhen a YLCC unit is to be installed in a dusty or abrasiveenvironment, it is necessary to protect the condensing coilwith an accessory filter kit, which is to be fitted onto the suctionfilter-holder located in front of the coil. The filter accessory is

comprised of three filtering panels, which fit together for easyassembly or removal for servicing and cleaning operations.When installing, it is important to maintain recommendedminimum clearances around the unit for filter servicing andaccess.

YLC

C 4

0 /6

0= 9

75

YLC

C 8

1 /1

21=

113

0

YLCC 40 /60= 668

YLCC 81 /121= 920

20

28

AIR CONDITIONING

HEATING

TILES

BATHROOMS

York, S.L.

Paseo Espronceda, 27808204 Sabadell (Barcelona) - SpainTelephone (34) 937 489 000Telefax (34) 937 117 285