Technical YCWM

YCWM-BWATER COOLEDCHILLER

YCRM-BREMOTE AIRCOOLED CHILLERR407C REFRIGERANT

COOLING CAPACITIES57 kW to 141 kW

YORK Water Cooled Chillers (YCWM-B)and Remote Air Cooled Chillers(YCRM-B) are a compact design suitablefor chilled water or glycol cooling. They aredesigned to be located inside a plantroom.

YCWM-B Chillers require a cooling toweror dry cooler for heat rejection.

YCRM-B Chillers require an air cooledcondenser for heat rejection.

CONTENTSSpecification

Accessories and Options

Controls

Operating Limitations

Refrigeration Flow Diagram

Selection Guide

Water Pressure Drops

Cooling Capacities

Physical Data

Acoustic Data

Electrical Data

Electrical Connections

Space Requirements

Dimensions

AVAILABLE MODELS & NOMINAL COOLING CAPACITIES TABLE 1

FEATURES BENEFITSA narrow width and low base area. Ideal replacement for existing chillers in

refurbished buildings.

Two refrigerant circuits. System stand-by security.

Minimum base area/maximum capacity. Minimum installation space.

Low weight , single power and control supplies. Easy to install.

Full factory run test. Operating quality control.

Optional acoustic kit. Reduces operating sound levels.

Accessible components. Ideal for maintenance operations.

Residual current circuit breaker. Operator safety.

Microprocessor control with visual display of temperaturesand alarms.

Simple operation.

Manufactured to ISO 9001/EN 29001. High standard of quality control.

Optional heat pump mode. Year round heating and cooling.

SPECIFICATIONThe Chillers shall be completely factory assembled with all interconnectingrefrigerant piping and wiring ready for field installation. After assembly the YCWM-Bshall have a full test run with water flowing through the evaporators. The YCWM-Bshall be pressure tested, evacuated and fully charged with refrigerant and includean initial oil charge. The YCRM-B shall be pressure tested, evacuated and include anitrogen holding charge and an initial oil charge.

The unit base and frame shall be of heavy gauge galvanised steel fastened withstainless steel nuts and bolts. All units shall have a galvanised steel enclosure withan access panel. Galvanised steel parts shall be painted with baked on enamelcoloured white (RAL 9001).

CompressorsThe hermetic compressors shall have internal motor protection and an internaloverflow valve from discharge to suction. Starting shall be direct on line. Thecompressors shall be mounted on rubber anti-vibration pads and housed in aseparate acoustically lined enclosure.

Page C.1Doc. No. PC153/10.04/GB

Model 60 75 90 120 150YCWM-B 57 69 89 117 141YCRM-B 57 69 89 117 141

YCWM-B cooling capacities at 7C chilled water and 35C condenser water temperature

YCRM-B cooling capacities at 7C chilled water and 40C condensing temperature

Cooling Capacity (kW)

YCWM-B Evaporators and CondensersYCRM-B EvaporatorsEach of the two evaporators and condensers shall be stainlesssteel plate type heat exchangers thermally insulated with flexibleclosed cell material. Design working pressure 10 bar g on thewater side and 30 bar g on the refrigerant side.

YCRM-B CondenserProvision shall be made for connection to a remote air cooledcondenser.

Refrigerant CircuitsTwo refrigerant circuits shall be provided and each circuit shallinclude: a service valve for refrigerant charging, suction,discharge and liquid line isolating valves, a sight glass withmoisture indicator, a thermostatic expansion valve and a wiremesh filter.

Power and Control PanelAll controls and motor starting equipment necessary for full unitoperation shall be factory wired and tested. Control and powercomponents shall be located in separate compartments. Thepanel shall be designed to IP53 weather protection.

The control compartment shall contain an electronic circuitboard and a soft touch key control panel with display ofoperating functions, alarms and stops.

The power compartment shall contain compressor contactors,fuses and supply protection.

Polythene film packaging for shipping.


ACCESSORIES AND OPTIONSRemote Control Kit for YCWM-B/YCRM-BField mounted control panel to provide remote control.

Manifold Kit for YCWM-B/YCRM-BField mounted manifolds to provide a single point of connectionfor leaving and return water circuits.

Shipping packaging option for seaworthiness or in a woodencrate.

Flow Switch Kit for YCWM-B/YCRM-BField mounted flow switches for evaporator water circuits.

Pressostatic Valve (YCWM-B)Pressostatic valves are remotely located in the leavingcondenser water pipework from each of the two condensers.They are wired to the YCWM-B control panel. When the actualcondensing pressure equals the control set point the valvesopen modulating the water flow.

Hydro KitThe field installed YORK Hydro Kit is a hydraulic packagecomplete with all components required for the correct operationof a liquid distribution circuit.

+

-SET

IN

OUT

H 0

H 0

2

2

P

P

-P

-P

8 88 8

DisplaySetpoints Circuit 1 System

Circuit 2

I

O

1 2 3 4 5 6 7 8 9 10 11 12

13141516

FIGURE 1 CONTROLS

1. Master switch/safety cut out.2. Setpoint selection and display key and LED

(cold/hot water temperature)3. Setpoint change key (+). Increases desired

water temperature.4. Display5. Inlet water display and LED.

6. Start-up key and LED.7. Compressor ON LED.8. High pressure alarm LED.9. Low pressure alarm LED.

10. Antifreeze alarm.11. Voltage ON LED.

12. Start key and LED - Cooling.13. Start key and LED - Heating.14. External interlock alarm LED.15. Outlet water display and LED.16. Setpoint change key (-). Decreases desired

water temperature.

Control is by return water temperature control.

REFRIGERANT FLOW DIAGRAM

YCWM-B Cooling ModeLow pressure liquid refrigerant enters the cooler (Evaporator)and is evaporated and superheated by the heat energyabsorbed from the chilled water passing through the coolershell. Low pressure vapour enters the compressor wherepressure and superheat are increased. Heat is rejected by thewater cooled condenser. The fully condensed and subcooledliquid refrigerant then enters the expansion valve wherepressure reduction and further cooling takes place beforereturning to the cooler.

YCWM-B Heat PumpThe YCWM-B unit can operate as a water to water heat pump byreversing the cycle on the water circuits using three way valves.Pressostatic two way valves are available as an option forremote location in the and condenser water pipework.

Note: This type of operation is possible only if the condensersare supplied with well water or disposable water. The systemcannot be used if a cooling tower is used.


YCWM-B/YCRM-B 60 75 90 120 150Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.

Chilled Evaporator water Water outlet C 6 to 12Liquid outlet temperature Temp. spread C 3 to 8

Flow rate (1) m/h 4,3 20,3 5.0 24,0 6,9 32,7 8,6 42,1 10,4 50,4

kPa 6,3 112,9 6,7 125,1 6,1 113,8 4,7 93,0 5,3 103,4

Max. working pressure bar 10Cooling Liquid outlet Water outlet C 30 to 50Liquid temperature Temp. spread K 3 to 8

(2) Flow rate (1) m/h 6,1 24,4 7,2 29,5 8,3 39,2 12,6 50,7 15,2 61,2Pressure drop (1) kPa 15,2 212,2 15,7 230,7 13,8 271,4 18,2 265,0 17,7 258,2

Max. working pressure bar 10Power supply voltage 400 V, 3 , 50 Hz (nominal) V 360 to 440Recommended system water volume (3) l 730 860 1050 1550 1750

(1) Total unit flow rate and pressure drop are given(2) YCWM-B only(3) Table shows minimum water / brine volume of system

Pressure drop (1)

OPERATING LIMITATIONS TABLE 2

YCWM-B FIGURE 2 YCWM-B HEAT PUMP FIGURE 3

SELECTION GUIDEDATA REQUIREDTo select a YORK YCWM-B chiller the following information isrequired:

1. Design cooling capacity.

2. Chilled water entering and leaving temperatures.

3. Condenser water entering and leaving temperature.

4. Chilled water flow (m/h) if one of the temperatures in (2) isunknown.

5. Condenser water flow (m/h) if one of the temperatures in (3)is unknown.

Determine the capacity from:

Cooling Capacity (kW) = Range (C) x chilled water (m/h)0.86

Determine the heat rejection from:

Heat Rejection (kW) = Range (C) x condenser water (m/h)0.86

YCWM-B SAMPLE SELECTIONSelect a YCWM-B chiller to cool 18 m/h of water from 11C to6C. The condenser leaving water temperature is 33C with a6C range.

The required fouling factor is 0.176m C/kW for cooler andcondenser.

Find the required unit size, cooling capacity, kW input and thecooler and condenser pressure drop.

1. Chilled water range = 11 - 6 = 5C

2. Cooling Capacity (kW) = Range (C) x chilled water (m/h)0.86

= 5 x 18 = 104.65 kW0.86

3. Select a chiller model from capacity table 4 YCWM-B 120 hasthe following capacity:

4. Determine the compressor power input (kW)

5. The fouling factor required in the condenser introduces acapacity factor of 0.955 and a kW input factor of 1.068.

The fouling factor required in the cooler introduces a capacityfactor of 0.964 and a kW input factor of 0.985 (see table 2).

Net Cooling Capacity = 115.6 x 0.955 x 0.964 = 106.4 kWNet kW input = 32 x 1.068 x 0.985 = 33.7 kW

6 The heat rejection at the required fouling conditions will be106.4 + (33.7 x 0.95*) = 138.4 kW*5% radiation heat loss through compressor and motorhousing.

7. The chilled water flow required to satisfy the capacitycorrected for the fouling conditions

Actual capacity (kW) x 0.86 = 106.4 x 0.86 = 18.3 m/hRange (C) 5.0

8 The evaporator water pressure drop = 20kPa (see Figure 5).

9. The condenser water flow:

Heat rejection (kW) x 0.86 = 138.4 x 0.86 = 19.8 m/hRange (C) 6

10.Determine the condenser water pressure drop = 44kPA. (seeFigure 5).

TABLE 3 FOULING FACTORS


Chilled Leaving (C)Water Temp. Chiller Capacity (kW)Condenser Leaving 30CWater Temp. 33C

35C

6

112115.6121

Chilled Leaving (C)Water Temp. Compressor Power Input (kW)Condenser Leaving 30CWater Temp. 33C

35C

6

31

32

32.7

EVAPORATORFouling Factor m C/kW Capacity Factor Comp. Input Factor

0.044 1.000 1.0000.088 0.987 0.9950.176 0.964 0.9850.352 0.915 0.962

CONDENSERFouling Factor m C/kW Capacity Factor Comp. Input Factor

0.044 1.000 1.0000.088 0.987 1.0230.176 0.955 1.0680.352 0.910 1.135

WATER PRESSURE DROPS

YCWM-B COOLING CAPACITIES TABLE 4

YCRM-B COOLING CAPACITIES TABLE 5


Pre

ssur

eD

rop

kPa

Flow Rate m/h4 5 6 7 8 9 10 15 20 25 30 35 45 5140

4

5

9

7

10

15

25

35

4045

20

30

50

75

100

125130

6

8

150120

9075

60

YCWM-B/YCRM-B EVAPORATORS FIGURE 4

Pre

ssur

eD

rop

kPa

Flow Rate m/h6 7 8 9 10 15 20 25 30 35 45 50 55 60 6540

101112

151413

25

30

35

5045

40

75

100

125

150

175

200

250225

275

20

150120907560

YCWM-B CONDENSERS FIGURE 5

Leaving Condensing Leaving Water TemperatureChilled 30C 35C 40C 45C 50C

Model Liquid Cool Power Heat Cool Power Heat Cool Power Heat Cool Power Heat Cool Power HeatTemp Input Rejection Input Rejection Input Rejection Input Rejection Input Rejection

C kW kW kW kW kW kW kW kW kW kW kW kW kW kW kW6 59 14.6 73.4 54 15.5 69.4 50 16.4 66.3 46 17.1 62.2 42 17.8 59.2

YCWM 7 61 14.8 75.5 57 15.7 72.4 52 16.6 68.3 48 17.4 65.3 44 18.1 61.260 10 68 15.2 83.6 63 16.3 79.6 59 17.3 75.5 54 18.2 71.4 50 19.0 68.3

12 72 15.4 87.7 67 16.6 83.6 62 17.7 79.6 58 18.7 75.5 53 19.6 72.46 71 17.4 88.7 66 18.2 83.6 61 19.0 79.6 58 19.8 77.5 50 20.7 70.4

YCWM 7 74 17.6 91.8 69 18.4 86.7 63 19.3 82.6 60 20.2 79.6 53 21.1 73.475 10 83 18.1 100.0 77 19.2 95.9 71 20.2 90.8 65 21.3 85.7 60 22.3 81.6

12 87 18.5 105.1 82 19.7 100.0 75 20.8 95.9 69 22.0 90.8 64 23.1 86.76 93 21.3 113.2 85 22.6 106.1 75 23.7 98.9 68 24.7 91.8 60 25.5 85.7

YCWM 7 97 21.6 118.3 89 22.9 111.2 80 24.1 103.0 71 25.2 95.9 64 26.0 88.790 10 110 22.2 131.6 101 23.9 124.4 92 25.3 116.3 83 26.5 108.1 73 27.6 101.0

12 118 22.6 139.7 108 24.4 131.6 99 26.0 123.4 90 27.3 116.3 81 28.5 108.16 121 30.6 151.0 112 32.3 142.8 103 33.9 135.7 94 35.4 128.5 86 36.7 120.4

YCWM 7 126 31.0 157.1 117 32.7 148.9 108 34.4 140.8 99 35.9 133.6 90 37.3 125.5120 10 142 31.9 172.4 132 33.9 164.2 121 35.8 156.1 112 37.6 147.9 102 39.2 139.7

12 151 32.4 181.6 140 34.5 173.4 130 36.7 165.2 119 38.7 157.1 109 40.5 148.96 146 38.0 182.6 135 40.2 174.4 124 42.2 165.2 114 44.1 157.1 104 45.8 147.9

YCWM 7 152 38.4 189.7 141 40.7 180.5 130 42.9 171.4 119 44.9 162.2 108 46.6 154.0150 10 169 39.6 208.1 157 42.2 198.9 146 44.7 188.7 134 47.0 179.5 122 49.1 170.3

12 180 40.2 218.3 167 43.1 209.1 154 45.8 198.9 142 48.3 188.7 131 50.6 179.5

Leaving Condenser TemperatureChilled 35C 40C 45C 50C 55C

Model Liquid Cool Power Heat Cool Power Heat Cool Power Heat Cool Power Heat Cool Power HeatTemp Input Rejection Input Rejection Input Rejection Input Rejection Input Rejection

C kW kW kW kW kW kW kW kW kW kW kW kW kW kW kW6 59 14.6 73.4 54 15.5 69.4 50 16.4 66.3 46 17.1 62.2 42 17.8 59.2

YCRM 7 61 14.8 75.5 57 15.7 72.4 52 16.6 68.3 48 17.4 65.3 44 18.1 61.260 10 68 15.2 83.6 63 16.3 79.6 59 17.3 75.5 54 18.2 71.4 50 19.0 68.3

12 72 15.4 87.7 67 16.6 83.6 62 17.7 79.6 58 18.7 75.5 53 19.6 72.46 71 17.4 88.7 66 18.2 83.6 61 19.0 79.6 58 19.8 77.5 50 20.7 70.4

YCRM 7 74 17.6 91.8 69 18.4 86.7 63 19.3 82.6 60 20.2 79.6 53 21.1 73.475 10 83 18.1 100.0 77 19.2 95.9 71 20.2 90.8 65 21.3 85.7 60 22.3 81.6

12 87 18.5 105.1 82 19.7 100.0 75 20.8 95.9 69 22.0 90.8 64 23.1 86.76 93 21.3 113.2 85 22.6 106.1 75 23.7 98.9 68 24.7 91.8 60 25.5 85.7

YCRM 7 97 21.6 118.3 89 22.9 111.2 80 24.1 103.0 71 25.2 95.9 64 26.0 88.790 10 110 22.2 131.6 101 23.9 124.4 92 25.3 116.3 83 26.5 108.1 73 27.6 101.0

12 118 22.6 139.7 108 24.4 131.6 99 26.0 123.4 90 27.3 116.3 81 28.5 108.16 121 30.6 151.0 112 32.3 142.8 103 33.9 135.7 94 35.4 128.5 86 36.7 120.4

YCRM 7 126 31.0 157.1 117 32.7 148.9 108 34.4 140.8 99 35.9 133.6 90 37.3 125.5120 10 142 31.9 172.4 132 33.9 164.2 121 35.8 156.1 112 37.6 147.9 102 39.2 139.7

12 151 32.4 181.6 140 34.5 173.4 130 36.7 165.2 119 38.7 157.1 109 40.5 148.96 146 38.0 182.6 135 40.2 174.4 124 42.2 165.2 114 44.1 157.1 104 45.8 147.9

YCRM 7 152 38.4 189.7 141 40.7 180.5 130 42.9 171.4 119 44.9 162.2 108 46.6 154.0150 10 169 39.6 208.1 157 42.2 198.9 146 44.7 188.7 134 47.0 179.5 122 49.1 170.3

12 180 40.2 218.3 167 43.1 209.1 154 45.8 198.9 142 48.3 188.7 131 50.6 179.5

TABLE 6 PHYSICAL DATA

TABLE 7 ACOUSTIC DATA

ELECTRICAL DATAThe following connections are required:

One 400-3-50Hz supply plus earth for each power circuit. Control interlocks if required.

The power connections and interlocks can be made to a singleterminal strip.

Supply cables should enter the unit via a hole provided at thebottom of the panel.

Mains isolator switches should be located adjacent to the unitand should incorporate provision for locking in the off position.Installation of differential safety cut-outs is recommended toprevent damage due to phase failure.


YCWM-B/YCRM-B 60 75 90 120 150Refrigerant Circuits 2 2 2 2 2

kg 2,3 2,6 4 4,2 4,7Compressor Theoretical displacement m/h 39,8 44,2 58,2 76,4 88,3

Number 2 2 2 2 2No. of cylinders 3 3 6 6 6Revs per minute rpm 2900 2900 2900 2900 2900Oil charge per compressor l 2,9 3,1 6,6 6,6 6,6No. of loading stages % 100-50 100-50 100-50 100-50 100-50

Evaporator Number 2 2 2 2 2Water volume per evaporator l 2,85 3,32 3,76 5,64 6,58

Water cooled Number 2 2 2 2 2Condenser (1) Water volume per condenser l 2,37 2,85 2,82 3,76 4,7YCWM-B Weight Operating kg 440 450 587 600 621

Shipping kg 430 440 577 590 611YCRM-B Weight Operating kg 412 422 559 572 593

Shipping kg 402 412 549 562 583Length mm 1210 1210 1210 1210 1210

Dimensions Width mm 758 758 758 758 758Height mm 1060 1060 1060 1060 1060

(1) YCWM-B only

Refrigerant charge per circuit

YCWM-B/YCRM-B 60 75 90 120 150Sound Power (dB(A)) 74 75 75 76 77

Tolerance 2 dB(A)

YCWM-B/YCRM-B60 75 90 120 150

Current Nom. Cond. 30 35 45 64 76Input (A) Max. Cond. 34 43 52 73 88Power Nom. Cond. 16 19 23 33 41

Input (KW) Max. Cond. 20 23 29 41 51

YCWM-B nominal conditions at 7C chilled water outlet temperature, 35C condenser outlet temperatureYCWM-B maximum conditions at 12C chilled water outlet temperature, 50C condenser outlet temperatureYCRM-B nominal conditions at 7C chilled water outlet temperature, 40C condensing temperatureYCRM-B maximum conditions at 12C chilled water outlet temperature, 55C condensing temperature

Model

ELECTRICAL CONNECTIONS

SPACE REQUIREMENTS


PE

L1

1

L3

3

35

10

24

5

37

39

L2

2

4

36

11

25

6

12

26

38

40

(COMMON)

(COMMON)

(COMMON)

(COOLING)

(COOLING)

(HEATING)

(HEATING)

(NO)

UNIT TERMINAL BOARD EXTERNAL TERMINAL BOARD

LINE400-3-50

FLOW SWITCH OREXTERNAL INTERLOCK

INTERLOCK(OPTIONAL)CIRC PUMP ETC

REMOTE INDICATIONVOLTAGE ON

REMOTE ON/OFFCONTROL

REMOTEINDICATION

GENERAL ALARM

COMPRESSOR '1' ON

UNIT ELECTRICAL TERMINALS

VOLTAGE FREE CONTACT

COMPRESSOR '2' ON

EXTERNAL EQUIPMENT TERMINALS

600 1000600 600

600

DIMENSIONS


JK K

YCRM-B

A

D

N

O

B C

J I I

H

E F

M

LL

YCWM-B

EV 2 EV 1

CD 1CD 2

H

G

E F

EV 2 EV 1G

A AA A

Note:EV = EvaporatorCD = Condenser

YCWM-B Evap. Cond.Model A B C D E F G H I J K L M N O Pipe Conn. Pipe Conn.

60 1060 1210 758 20 500 278 479 500 500 500 - 410 479 100 150 ISO-G 1" ISO-G 1"

75 1060 1210 758 20 500 278 479 500 500 500 - 410 479 100 150 ISO-G 1" ISO-G 1"

90 1060 1210 758 26 555 286 456 510 538 555 - 420 456 100 150 ISO-G 1 1/2" ISO-G 1 1/2"

120 1060 1210 758 26 555 286 456 510 538 555 - 420 456 100 150 ISO-G 1 1/2" ISO-G 1 1/2"

150 1060 1210 758 26 555 286 456 510 538 555 - 420 456 100 150 ISO-G 1 1/2" ISO-G 1 1/2"

YCRM-B Evap. Ref. Ref.Model A B C D E F G H I J K L M N 0 Pipe Conn. Inlet Conn. Outlet Conn.

60 1060 1210 758 20 500 278 479 500 295 430 70 390 - 100 150 ISO-G 1" 5/8" 7/8"

75 1060 1210 758 20 500 278 479 500 295 430 70 390 - 100 150 ISO-G 1" 5/8" 7/8"

90 1060 1210 758 26 555 286 456 510 225 485 70 390 - 100 150 ISO-G 1 1/2" 7/8" 1 1/8"

120 1060 1210 758 26 555 286 456 510 225 485 70 390 - 100 150 ISO-G 1 1/2" 7/8" 1 1/8"

150 1060 1210 758 26 555 286 456 510 225 485 70 390 - 100 150 ISO-G 1 1/2" 7/8" 1 1/8"

Dimensions in mm unless stated

Documents

Technical YCWM