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York MILLENNIUM YCAL0043SC Manual Download Page 85

YORK INTERNATIONAL

85

FORM 150.62-NM2

LOW AMBIENT CONDENSER FAN CONTROL

For unit operation below 25°F (-3.9°C) a low ambient kit
is required. The kit consists of a discharge pressure
transducer(s) and reversing contactors.

With the low ambient kit installed and the unit programmed
for low ambient operation, the condenser fans will oper-
ate as shown in Tables 38 and 39.

TABLE 38 

– LOW AMBIENT CONDENSER FAN CONTROL – AMBIENT TEMPERATURE AND DISCHARGE

PRESSURE CONTROL

FAN STAGE

ON

OFF

1 - 1 FAN REV

OAT>25° F (-3.9°C)

OAT < 20° F (-6.7°C)

OR

AND

DP > ctrl_press

DP < ctrl_press - diff_press

2 - 1 FAN FWD

OAT>45°F  (7.2°C)

OAT < 40°F (-4.40°C)

OR

AND

DP > ctrl_press  + 20 PSIG  (1.38 Bars)

DP < ctrl_press  - diff 20 PSIG  (1.38 Bars)

3 - 2 FANS FWD

OAT > 65°F (18.3°C)

OAT < 60°F (15.6°C)

OR

AND

DP > ctrl 40 PSIG (2.76 Bars)

DP < ctrl_press - diff 40 PSIG (2.76 Bars)

Again, notice that condenser fan operation can be pro-
grammed for either “temperature and discharge pressure
control,” or “discharge pressure control only” as described
under Condenser Fan Control.

The fan control on-pressure (ctrl_press) and the fan
differencial off-pressure (diff_press) are programmable
under the PROGRAM key.

TABLE 39 

– LOW AMBIENT CONDENSER FAN CONTROL –  DISCHARGE PRESSURE CONTROL

FAN STAGE

ON

OFF

1 - 1 FAN REV

DP > ctrl_press

DP < ctrl_press - diff_press

2 - 1 FAN FWD

DP > ctrl_press  + 20 PSIG  (1.38 Bars)

 DP < ctrl_press  - diff 20 PSIG  (1.38 Bars)

3 - 2 FANS FWD

DP > ctrl 40 PSIG (2.76 Bars)

DP < ctrl_press - diff 40 PSIG (2.76 Bars)

2

Summary of Contents for MILLENNIUM YCAL0043SC

Page 1: ...etric Models Combined 380 415 3 50 MODEL ONLY 29224 R A INSTALLATION OPERATION MAINT MILLENNIUM AIR COOLED LIQUID CHILLERS HERMETIC SCROLL Supersedes Nothing Form 150 62 NM2 699 See Literature Supplement at end of this manual 150 62 NM2 LS2 ...

Page 2: ...ION 79 CONTROL SYSTEM AND TROUBLESHOOTING 89 OPTIONALPRINTER INSTALLATION 98 TROUBLESHOOTINGCHARTS 99 MAINTENANCE 102 ISNCONTROL 103 APPENDIX 1 DIMENSIONS 122 YORKAPPLIED SYSTEMS FIELD OFFICE LISTING 128 TABLES 1 ELECTRICALDATA 19 2 STANDARD POWER CONNECTIONS 20 21 3 SINGLE POINT POWER CONNECTIONS 22 23 4 TEMPERATURESAND FLOWS ENGLISH 24 5 VOLTAGE LIMITATIONS ENGLISH 24 6 COOLER PRESSURE DROPS ENG...

Page 3: ...MITS DEFAULTS 73 27 SETPOINTS KEY QUICK REFERENCE 74 28 UNIT KEYS QUICK REFERENCE 78 29 LEAVING CHILLED LIQUID CONTROL 6 COMPRESSORS 80 30 LEAVING CHILLED LIQUID CONTROL 4 COMPRESSORS 80 31 LEAVING CHILLED LIQUID CONTROL 3 COMPRESSORS 81 32 LEAVING CHILLED LIQUID CONTROL 2 COMPRESSORS 81 33 COMPRESSOR STAGING FOR RETURN WATER CONTROL 83 34 RETURN CHILLED LIQUID CONTROL 6 COMPRESSORS 83 35 RETURN C...

Page 4: ...ISC SW OR CIRC BKR 15 5 CONTROL WIRING 16 6 LEAVING WATER TEMPERATURE CONTROL COMPRESSOR STAGING 80 7 FIELD FACTORY ELECTRICALCONNECTIONS REMOTE TEMPERATURE RESET BOARD 88 8 MICROBOARD LAYOUT 92 9 MICROBOARD RELAYCONTACTS 97 10 PRINTER ELECTRICAL CONNECTIONS 98 11 ELEMENTARY DIAGRAM 106 107 12 ELEMENTARY DIAGRAM POWER CIRCUIT 108 13 ELEMENTARY DIAGRAM 110 111 14 ELEMENTARY DIAGRAM POWER CIRCUIT 11...

Page 5: ...tion and responsibility of operating service personnel to work safely Failure to comply with any of these requirements could result in serious damage to the equipment and or the property in which it is situated as well as severe personal injury or death to people at the site GENERAL SAFETY GUIDELINES During installation operation maintenance or service individuals may be exposed to certain compone...

Page 6: ... UNIT DESIGNATOR REFRIGERANT VOLTAGE STARTER DESIGN DEVELOPMENT LEVEL Y 0 S C 5 0 A C 1 A A U L YORK Chiller Air Cooled Condensing Unit Scroll 60HZ Nominal Tons Even Number 50HZ Nominal kW Odd Number Standard Unit 380 415 3 50 Design Series A Engineering Change or PIN Level EXAMPLES 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Y C A L 0 2 5 3 S C 5 0 X A A Across the Line X ...

Page 7: ...Sound Blanket Low Sound Fans 1 Deflection Seismic Neoprene Pads 55 EXTENDED FIELD X B C D E F G H 1st Year Parts Only 1st Year Parts Labor 2nd Year Parts Only 2nd Year Parts Labor 5 Year Compressor Parts Only 5 Year Compressor Parts Labor Only 5 Year Units Parts Only 5 Year Ubit Parts Labor Low Ambient Kit factory High Ambient Kit factory Both Low High Ambient factory BAS EMS Temp Reset Offset Spa...

Page 8: ...R TEMP SENSOR DISCHARGE LINE BALL VALVE HOT DISCHARGE GAS LINE LIQUID LINE SERVICE VALVE LIQUID LINE FILTER DRIER LIQUID LINE SOLENOID VALVE SIGHT GLASS MOISTURE INDICATOR SOLENOID OPERATED HOT GAS BY PASS VALVE SUCTION LINE BALL VALVE EQUALIZER LINE TXV RELIEF VALVE 300 PSIG 20 68 BARG YCAL REFRIGERANT FLOW DIAGRAM INCLUDING TEMPERATURE SENSORS PRESSURE TRANSDUCERS NOTE YCAL0117 0253 HAVE TWO REF...

Page 9: ... to install and start up the chiller HANDLING These units are shipped as completely assembled units containing full operating charge and care should be taken to avoid damage due to rough handling The unit should be lifted by inserting hooks through the holes provided in unit base rails Spreader bars should be used to avoid crushing the unit frame rails with the lifting chains See illustration belo...

Page 10: ...t located next to occupied spaces or noise sensitive ar eas where chiller noise level would be a problem Chiller noise is a result of compressor and fan operation Con siderations should be made utilizing noise levels pub lished in the YORK Engineering Guide for the specific chiller model Sound blankets for the compressors and low sound fans are available SPRING ISOLATORS OPTIONAL When ordered four...

Page 11: ...o servicing thermometers and pressure gauges should be installed in the inlet and outlet water lines 6 The chilled water lines that are exposed to outdoor ambients should be wrapped with supplemental heater cable and insulated to protect against freeze up during low ambient periods and to prevent formation of condensation on lines in warm humid locations 7 A chilled water flow switch either by YOR...

Page 12: ...STOP CONTACTS To remotely start and stop the chiller dry contacts can be wired in series with the flow switch and CTB2 termi nals 13 to 14 Refer to figure 5 and unit wiring diagram REMOTEEMERGENCYCUTOFF Immediate shutdown of the chiller can be accomplished by opening a field installed dry contact to break the elec trical circuit between terminals 5 to L on terminal block CTB2 The unit is shipped w...

Page 13: ...1 THE UNIT EVAPORATOR HEATER USES 115 VAC DISCONNECTING 115 VAC POWER FROM THE UNIT AT OR BELOW FREEZING TEM PERATURES CAN RESULT IN DAMAGE TO THE EVAPRORATOR AND UNIT AS A RESULT OF THE CHILLED LIQUID FREEZING IT IS POSSIBLE THAT MULTIPLE SOURCES OF POWER CAN BE SUP PLYING THE UNIT POWER PANEL TO PREVENT SERIOUS INJURY OR DEATH THE TECHNICIAN SHOULD VERIFY THAT NO LETHAL VOLTAGES ARE PRESENT INSI...

Page 14: ...IONAL SINGLE POINT POWER SUPPLY WIRING 0117 0253 LD4512 THE UNIT EVAPORATOR HEATER USES 115 VAC DISCONNECTING 115 VAC POWER FROM THE UNIT AT OR BELOW FREEZING TEM PERATURES CAN RESULT IN DAMAGE TO THE EVAPRORATOR AND UNIT AS A RESULT OF THE CHILLED LIQUID FREEZING IT IS POSSIBLE THAT MULTIPLE SOURCES OF POWER CAN BE SUP PLYING THE UNIT POWER PANEL TO PREVENT SERIOUS INJURY OR DEATH THE TECHNICIAN ...

Page 15: ...INT POWER WIRING OPTIONAL SINGLE POINT POWER SUPPLY WIRING N F DISC Sw OR CIRC BKR 0043 0253 LD04513 THE UNIT EVAPORATOR HEATER USES 115 VAC DISCONNECTING 115 VAC POWER FROM THE UNIT AT OR BELOW FREEZING TEM PERATURES CAN RESULT IN DAMAGE TO THE EVAPRORATOR AND UNIT AS A RESULT OF THE CHILLED LIQUID FREEZING IT IS POSSIBLE THAT MULTIPLE SOURCES OF POWER CAN BE SUP PLYING THE UNIT POWER PANEL TO PR...

Page 16: ...AC DISCONNECTING 115 VAC POWER FROM THE UNIT AT OR BELOW FREEZING TEM PERATURES CAN RESULT IN DAMAGE TO THE EVAPRORATOR AND UNIT AS A RESULT OF THE CHILLED LIQUID FREEZING IT IS POSSIBLE THAT MULTIPLE SOURCES OF POWER CAN BE SUP PLYING THE UNIT POWER PANEL TO PREVENT SERIOUS INJURY OR DEATH THE TECHNICIAN SHOULD VERIFY THAT NO LETHAL VOLTAGES ARE PRESENT INSIDE THE PANELAFTER DISCONNECT ING POWER ...

Page 17: ...ximum size is based on 225 of the rated load amps for the largest motor plus 100 of the rated load amps for all other loads included in the circuit Exception YCA0043 and YCAL0057 must have the optional factory overloads installed to use a standard circuit breaker Otherwise an HACR type circuit breakers must be used Maximum HACR circuit breaker rating is based on 225 of the rated load amps for the ...

Page 18: ...SCONNECT SWITCH FACT MOUNT CB FACTORY MOUNTED CIRCUIT BREAKER FLA FULL LOAD AMPS HZ HERTZ MAX MAXIMUM MCA MINIMUM CIRCUIT AMPACITY MIN MINIMUM MIN NF MINIMUM NON FUSED RLA RATED LOAD AMPS S P WIRE SINGLE POINT WIRING UNIT MTD SERV SW UNIT MOUNTED SERVICE NON FUSED DISCONNECT SWITCH LRA LOCKED ROTOR AMPS LEGEND Factory Supplied Supplied by Others Installation ...

Page 19: ...umandMaximumOverCurrent Protection DualElementFuseorCircuitBreaker ELECTRICAL DATA THE UNIT EVAPORATOR HEATER USES 115 VAC DISCONNECTING 115 VAC POWER FROM THE UNIT AT OR BELOW FREEZING TEM PERATURES CAN RESULT IN DAMAGE TO THE EVAPRORATOR AND UNIT AS A RESULT OF THE CHILLED LIQUID FREEZING IT IS POSSIBLE THAT MULTIPLE SOURCES OF POWER CAN BE SUP PLYING THE UNIT POWER PANEL TO PREVENT SERIOUS INJU...

Page 20: ...1 3 0 16 3 1 3 0 2 3 8 0073SC 380 415 5 0 5 7 6 0 7 0 7 0 7 0 7 0 6 2 21 7 1 7 0 21 7 1 7 0 2 3 8 0087SC 380 415 5 0 6 2 1 0 0 7 0 8 0 7 0 8 0 6 2 24 1 1 7 5 24 1 1 7 5 2 3 8 0107SC 380 415 5 0 8 1 1 0 0 9 0 1 0 0 9 0 1 0 0 4 1 22 6 1 7 5 22 6 1 7 5 22 6 1 7 5 2 3 8 0117SC 380 415 5 0 4 1 6 0 4 5 5 0 4 5 5 0 8 4 14 5 1 2 0 14 5 1 2 0 2 3 8 0133SC 380 415 5 0 5 8 6 0 7 0 7 0 7 0 7 0 6 2 22 1 1 7 0 ...

Page 21: ...7 0 7 0 7 0 6 2 22 1 1 7 0 22 1 1 7 0 2 3 8 5 8 6 0 7 0 7 0 7 0 7 0 6 2 21 8 1 7 0 21 8 1 7 0 2 3 8 6 3 1 0 0 7 0 8 0 7 0 8 0 6 2 24 2 1 7 5 24 2 1 7 5 2 3 8 5 7 1 0 0 7 0 7 0 7 0 7 0 6 2 15 1 1 2 0 15 1 1 2 0 15 1 1 2 0 2 3 8 8 2 1 0 0 9 0 1 0 0 9 0 1 0 0 4 1 22 9 1 7 0 22 9 1 7 0 22 9 1 7 0 2 3 8 8 0 1 0 0 9 0 1 0 0 9 0 1 0 0 4 1 22 3 1 7 0 22 3 1 7 0 22 3 1 7 0 2 3 8 9 2 1 0 0 1 0 0 1 1 0 1 0 0...

Page 22: ... 0 9 0 4 1 4 1 4 1 0133SC 380 415 5 0 9 5 1 5 0 1 0 0 1 0 0 1 1 0 1 1 0 2 1 0 2 1 0 2 1 0 0147SC 380 415 5 0 1 1 0 1 5 0 1 2 5 1 2 5 1 2 5 1 2 5 2 1 0 2 1 0 2 1 0 0157SC 380 415 5 0 1 1 6 1 5 0 1 2 5 1 2 5 1 2 5 1 2 5 1 2 0 1 2 0 1 2 0 0173SC 380 415 5 0 1 1 9 1 5 0 1 2 5 1 2 5 1 2 5 1 2 5 1 2 0 1 2 0 1 2 0 0197SC 380 415 5 0 1 3 6 1 5 0 1 5 0 1 5 0 1 5 0 1 5 0 1 0 3 0 1 0 3 0 1 0 3 0 0217SC 380 4...

Page 23: ...2 0 14 5 1 2 0 2 3 8 22 1 1 7 0 22 1 1 7 0 2 3 8 22 1 1 7 0 22 1 1 7 0 2 3 8 25 3 1 7 5 25 3 1 7 5 2 3 8 21 8 1 7 0 21 8 1 7 0 2 3 8 24 2 1 7 5 24 2 1 7 5 2 3 8 24 2 1 7 5 24 2 1 7 5 2 3 8 23 1 1 7 0 23 1 1 7 0 23 1 1 7 0 2 3 8 15 1 1 2 0 15 1 1 2 0 15 1 1 2 0 2 3 8 22 9 1 7 0 22 9 1 7 0 22 9 1 7 0 2 3 8 22 9 1 7 0 22 9 1 7 0 22 9 1 7 0 2 3 8 26 0 1 7 5 26 0 1 7 5 26 0 1 7 5 2 3 8 22 3 1 7 0 22 3 ...

Page 24: ... limitations are absolute and op eration beyond these limitations may cause serious dam age to the compressor Excessive flow will cause damage to the cooler Do not exceed max cooler flow Special care should be taken when mul tiple chillers are fed by a single pump TABLE 5 VOLTAGES UNIT POWER MIN MAX 380 415 3 50 342 440 YCAL00 LEAVINGWATER TEMPERATURE F COOLER FLOW GPM3 AIR ON CONDENSER F MIN1 MAX...

Page 25: ...RVE 43SC 57SC 73SC A 87SC 107SC B 117SC 133SC 147SC C 157SC 173SC 197SC 217SC 237SC D 253SC E WT FACTORS FREEZE ETHYLENE POINT TONS COMPR DELTA GPM F F GLYCOL k W P TON 1 0 994 997 1 03 24 1 2 6 2 0 986 993 1 06 24 9 1 6 3 0 979 990 1 09 25 9 5 4 0 970 985 1 13 27 3 10 5 0 959 980 1 16 29 0 32 TABLE 7 ETHYLENEGLYCOLCORRECTION FACTORS 1 ...

Page 26: ...itations may cause serious dam age to the compressor TABLE 9 VOLTAGES YCAL00 LEAVINGWATER TEMPERATURE C COOLER FLOW l s3 AIR ON CONDENSER C MIN1 MAX2 MIN MAX MIN4 MAX5 43SC 4 4 12 8 1 9 3 8 17 7 51 7 57SC 4 4 12 8 1 9 3 8 17 7 51 7 73SC 4 4 12 8 2 2 4 4 17 7 51 7 87SC 4 4 12 8 2 8 4 7 17 7 51 7 107SC 4 4 12 8 4 7 6 9 17 7 51 7 117SC 4 4 12 8 4 7 15 8 17 7 51 7 133SC 4 4 12 8 4 7 15 8 17 7 51 7 147...

Page 27: ...RVE 43SC 57SC 73SC A 87SC 107SC B 117SC 133SC 147SC C 157SC 173SC 197SC 217SC 237SC D 253SC E WT FACTORS FREEZE ETHYLE POINT N E TONS COMPR DELTA GPM F F GLYCOL k W P TON 1 0 994 997 1 03 24 1 3 2 0 986 993 1 06 24 9 9 3 0 979 990 1 09 25 9 15 4 0 970 985 1 13 27 3 23 5 0 959 980 1 16 29 0 36 TABLE 11 ETHYLENEGLYCOLCORRECTION FACTORS 1 ...

Page 28: ...500 23500 47360 47360 Evaporator DirectExpansion DiameterxLength 8 x6 8 x6 8 x6 5 8 x7 10 x7 11 x8 11 x8 WaterVolume gallons 9 6 9 6 9 6 10 8 1 2 2 4 2 4 MaximumWaterSidePressure psig 1 5 0 1 5 0 1 5 0 1 5 0 1 5 0 1 5 0 1 5 0 MaximumRefrigerantSidePressure psig 3 0 0 3 0 0 3 0 0 3 0 0 3 0 0 3 0 0 3 0 0 MinimumChillerWaterFlowRate gpm 2 5 2 5 3 0 3 5 6 0 6 0 6 0 MaximumChillerWaterFlowRate gpm 6 0 ...

Page 29: ...0 1 1 4 0 1 1 4 0 1 1 4 0 3 3 3 3 3 3 3 47360 47360 46080 55253 55253 54550 53760 11 x8 11 x8 11 x8 14 x8 14 x8 14 x8 14 x8 2 4 2 4 2 4 4 1 4 1 4 1 3 8 1 5 0 1 5 0 1 5 0 1 5 0 1 5 0 1 5 0 1 5 0 3 0 0 3 0 0 3 0 0 3 0 0 3 0 0 3 0 0 3 0 0 6 0 6 0 6 0 1 0 0 1 0 0 1 0 0 1 0 0 2 5 0 2 5 0 2 5 0 3 9 0 3 9 0 3 9 0 4 3 0 4 4 4 6 6 6 6 4222 4300 4596 5207 5322 5569 5819 4610 4688 5275 5735 5925 6247 6 6 1 1...

Page 30: ... 7672 7672 11091 11091 11091 22351 22351 Evaporator DirectExpansion DiameterxLength 203x1829 203x1830 203x1981 203x2134 254x2134 279x2438 279x2438 WaterVolume liters 3 6 3 6 3 6 4 1 4 5 9 1 9 1 MaximumWaterSidePressure bar 1 0 1 0 1 0 1 0 1 0 1 0 1 0 MaximumRefrigerantSidePressure bar 2 1 2 1 2 1 2 1 2 1 2 1 2 1 MinimumChillerWaterFlowRate l s 2 2 2 2 4 4 4 MaximumChillerWaterFlowRate l s 4 4 4 5 ...

Page 31: ... 4 0 1 1 4 0 1 1 4 0 1 1 4 0 1 1 4 0 1 1 4 0 1 1 4 0 3 3 3 3 3 3 3 22351 22351 21747 26076 26076 25744 25371 279x2438 279x2438 279x2438 356x2438 356x2438 356x2438 356x2438 9 1 9 1 9 1 1 5 5 1 5 5 1 5 5 1 4 4 1 0 1 0 1 0 1 0 1 0 1 0 1 0 2 1 2 1 2 1 2 1 2 1 2 1 2 1 4 4 4 6 6 6 6 1 6 1 6 1 6 2 5 2 5 2 5 2 7 4 4 4 6 6 6 6 1915 1950 2085 2362 2414 2526 2640 2091 2126 2393 2601 2687 2834 2999 2024 2059 ...

Page 32: ...flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 6 rear to wall 6 control panel to end wall 4 0 to...

Page 33: ...NSIONS ENGLISH YCAL0043SC YCAL0057SC TABLE 14 WEIGHT DISTRIBUTION CENTER OF GRAVITY LD04402 MODEL WEIGHTDISTRIBUTION CENTEROFGRAVITY YCAL0 A B C D TOTAL X Y Z 043SC 580 533 580 533 2225 50 1 25 8 23 3 057SC 584 537 584 537 2241 50 2 25 9 23 2 1 ...

Page 34: ...rflow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 6 rear to wall 6 control panel to end wall 4 top...

Page 35: ...73SC YCAL0107SC TABLE 15 WEIGHT DISTRIBUTION CENTER OF GRAVITY LD04404 MODEL WEIGHTDISTRIBUTION CENTEROFGRAVITY YCAL0 A B C D TOTAL X Y Z 073SC 627 591 627 591 2435 50 6 25 9 28 5 087SC 635 688 685 688 2647 50 6 25 8 28 9 107SC 806 758 806 758 3129 48 0 25 4 26 9 1 ...

Page 36: ...rflow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 6 rear to wall 6 control panel to end wall 4 top...

Page 37: ... CENTER OF GRAVITY MODEL WEIGHTDISTRIBUTION CENTEROFGRAVITY YCAL0 A B C D TOTAL X Y Z 117SC 1110 1071 1110 1071 4363 58 6 40 3 28 9 133SC 1118 1082 1118 1082 4400 58 6 40 5 28 7 147SC 1133 1098 1133 1098 4462 58 7 40 3 28 6 157SC 1151 1119 1151 1119 4540 58 8 40 5 28 4 173SC 1217 1201 1217 1201 4836 59 2 40 3 29 9 1 ...

Page 38: ...rflow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 6 rear to wall 6 control panel to end wall 4 top...

Page 39: ...HT DISTRIBUTION CENTER OF GRAVITY LD04408 MODEL WEIGHTDISTRIBUTION CENTEROFGRAVITY YCAL0 A B C D TOTAL X Y Z 197SC 1463 1288 1463 1288 5501 56 3 46 0 30 1 217SC 1492 1315 1492 1315 5616 56 3 45 6 30 1 237SC 1551 1380 1551 1380 5863 56 5 45 9 31 0 253SC 1620 1444 1620 1444 6128 56 6 45 6 30 8 1 ...

Page 40: ...minished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 2m rear to wall 2m control panel to end wall 1 2m top no obstructions allowed ...

Page 41: ...L0057SC TABLE 18 WEIGHT DISTRIBUTION CENTER OF GRAVITY LD04410 All dimensions in millimeters unless otherwise noted MODEL WEIGHT DISTRIBUTION kg CENTEROFGRAVITY mm YCAL0 A B C D TOTAL X Y Z 043SC 263 242 263 242 1009 1274 656 591 057SC 265 243 265 243 1016 1274 656 590 1 ...

Page 42: ...minished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 2m rear to wall 2m control panel to end wall 1 2m top no obstructions allowed ...

Page 43: ... WEIGHT DISTRIBUTION CENTER OF GRAVITY LD04412 All dimensions in millimeters unless otherwise noted MODEL WEIGHTDISTRIBUTION CENTEROFGRAVITY YCAL0 A B C D TOTAL X Y Z 073SC 285 268 285 268 1104 1285 658 725 087SC 288 312 288 312 1201 1285 655 733 107SC 366 344 366 344 1419 1220 645 682 1 ...

Page 44: ...minished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 2m rear to wall 2m control panel to end wall 1 2m top no obstructions allowed ...

Page 45: ...414 All dimensions in millimeters unless otherwise noted MODEL WEIGHTDISTRIBUTION CENTEROFGRAVITY YCAL0 A B C D TOTAL X Y Z 117SC 503 486 503 486 1979 1488 1022 733 133SC 507 491 507 491 1996 1489 1028 730 147SC 514 498 514 498 2024 1491 1022 727 157SC 522 508 522 508 2059 1493 1028 722 173SC 552 545 552 545 2194 1503 1022 760 1 ...

Page 46: ...minished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutouts however the system designer must consider potential perfor mance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 2m rear to wall 2m control panel to end wall 1 2m top no obstructions allowed ...

Page 47: ...ENTER OF GRAVITY LD04416 All dimensions in millimeters unless otherwise noted MODEL WEIGHTDISTRIBUTION CENTEROFGRAVITY YCAL0 A B C D TOTAL X Y Z 197SC 664 584 664 584 2495 1430 1167 764 217SC 677 597 677 597 2547 1430 1159 764 237SC 704 626 704 626 2659 1436 1167 787 253SC 735 655 735 655 2780 1437 1159 782 1 ...

Page 48: ...INITIAL START No Power Unit Checks θ 1 Inspect the unit for shipping or installation damage θ 2 Assure that all piping has been completed θ 3 Visually check for refrigerant piping leaks θ 4 Open suction line ball valve discharge line ball valve and liquid line valve for each system θ 5 The compressor oil level should be maintained so that an oil level is visible in the sight glass The oil level ca...

Page 49: ...ssor rotation return the Unit Switch to the off position and ensure that both Systems are programmed for ON refer to Op tion 2 under Unit Keys section for more informa tion on system switches INITIAL START UP After the preceding checks have been completed and the control panel has been programmed as required in the pre startup checklist the chiller may be placed into operation θ 1 Place the Unit S...

Page 50: ... returned refrigerant gas in the suction line entering the compressor and the tem perature corresponding to the suction pressure as shown in a standard pressure temperature chart Example Suction Temp 46 F minus Suction Press 60 PSIG converted to Temp 34 F Superheat 12 F When adjusting the expansion valve the adjusting screw should be turned not more than one turn at a time allow ing sufficient tim...

Page 51: ...all systems shut down 4 Several seconds after the compressor starts that systems first condenser fan will be cycled on out door air temperature 25 F 4 C See the section on Operating Controls for details concerning con denser fan cycling 5 After 1 minutes of compressor run time the next compressor in sequence will start when a system has to load This compressor will be the one with the least run ti...

Page 52: ...oint A Master ON Off switch is available to activate or deac tivate the unit INTRODUCTION MICROPROCESSOR BOARD The Microprocessor Board is the controller and deci sion maker in the control panel System inputs such as pressure transducers and temperature sensors are con nected directly to the Microprocessor Board The Mi croprocessor Board circuitry multiplexes the analog in puts digitizes them and ...

Page 53: ...than or less than These characters indicate the actual values are greater than or less than the limit values which are being displayed KEYPAD The 12 button non tactile keypad allows the user to re trieve vitals system parameters such as system pres sures temperatures compressor running times and starts option information on the chiller and system setpoints This data is useful for monitoring chille...

Page 54: ...the control panel is in the OFF position which will not allow the unit to run The REMOTE CONTROLLED SHUTDOWN message indicates that either an ISN or BAS system has turned the unit off not allowing it to run The DAILY SCHEDULE SHUTDOWN message indi cates that the daily holiday schedule programmed is keeping the unit from running NO RUN PERM shows that either the flow switch is open or a remote star...

Page 55: ...er being timed out The anti coincident timer is only present on two system units When this message appears discharge pressure limit ing is in effect The Discharge Pressure Limiting feature is integral to the standard software control however the discharge transducer is optional Therefore it is impor tant to keep in mind that this control will not function unless the optional discharge transducer i...

Page 56: ...in the MANUAL OVERRIDE mode MANUAL OVERRIDE is to only be used in emergencies or for servicing Manual override mode automatically disables itself after 30 min utes The PUMPING DOWN message indicates that a com pressor in the respective system is presently in the pro cess of pumping the system down When pumpdown is initiated the liquid line solenoid will close and a com pressor will continue to run...

Page 57: ...he programmed value and ramps up the cutout over the next 30 seconds If at any time during this 30 sec onds the suction pressure falls below the ramped cut out the system will stop This transient protection scheme only works if the suction pressure transducer is installed When using the mechanical LP switch the operating points of the LP switch are opens at 23 psig 5 psig 1 59 barg 34 barg and clo...

Page 58: ... recycle timers have finished counting down UNIT WARNING The following message is not a unit safety and will not be logged to the history buffer It is a unit warning and will not auto restart Operator intervention is required to allow a re start of the chiller The Low Battery Warning can only occur at unit power up On micropanel power up the RTC battery is checked If a low battery is found all pro...

Page 59: ...m X Switch Off System X Comps Run System X AR Timer System X AC Timer System X Disch Limiting System X Suction Limiting System X Percentage Load Limiting Manual Overide Status System X Pumping Down on shutdown Unit Safeties System Safeties Low Ambient Temp System X High Disch Pressure System X Low Suct Pressure Low Liquid Temp System X MP HPCO Fault 115 VAC Undervoltage Low Battery Check Prog Step...

Page 60: ... another key is pressed After pressing the OPER DATAkey the various operating data screens can be scrolled through by using the UP and DOWN arrow keys located under the ENTRY section DISPLAY PRINT KEYS With the UNIT TYPE programmed as a liquid chiller under the Options key the following is a list of operat ing data screens in the order that they are displayed This display shows chilled leaving and...

Page 61: ...s determined by how far the actual liquid temperature is from setpoint Adetailed description of unit loading and unloading is covered un der the topic of Capacity Control The display of COOLING DEMAND indicates the cur rent step in the capacity control scheme The number of available steps are determined by how many com pressors are in the unit In the above display the 2 does not mean that two comp...

Page 62: ... sages indicate the type of remote control mode active NONE no remote control active Remote monitoring may be via ISN ISN YorkTalk via ISN Remote Mode LOAD LIM load limiting enabled Can be either stage 1 or stage 2 of limiting PWM TEMP EMS PWM temperature reset Refer to the section on Operating Controls The above four message will appear sequentially first for system 1 then for system 2 The first ...

Page 63: ...per Data Key Leaving Chilled Liquid Temps Ambient Air Temperature System 1 Discharge Suction Pressure System 2 Discharge Suction Pressure System X Accumulated Run Times System X Accumulated Starts Load and Unload Timers Cooling Demand Steps Lead System Indicator Evaporator Pump Contacts Heater Status Remote Control Active System X Number of Comp Running System X Run Time Sys 1 LLSV HGSV Status Sys...

Page 64: ...DEGF COOLING RANGE 42 0 2 0 DEGF SYS 1 SETPOINT 70 3 PSIG SYS 2 SETPOINT 70 3 PSIG AMBIENT AIR TEMP 74 8 DEGF LEAD SYSTEM SYS 2 EVAPORATOR PUMP ON EVAPORATOR HEATER OFF ACTIVE REMOTE CONTROL NONE SOFTWARE VERSION C M02 01 00 operating parameters When the OPER DATA key is pressed a snapshot will be taken of system operating conditions and panel programming selections This data will be temporarily s...

Page 65: ...ally caused the safety threshold to be exceeded The history printout is similar to the operational data printout shown in the previous section The differences are in the header and the schedule information The daily schedule is not printed in a history print One example history buffer printout is shown below The data part of the printout will be exactly the same as the operational data print so it...

Page 66: ... U L T L O W L I Q U I D T E M P L E A V I N G L I Q U I D T E M P C U T O U T X X X X F S Y S X F A N S T A G E X X X A C T I V E R E M O T E C T R L X X X X S Y S X S P X X X X P S I G D P X X X X P S I G S Y S X R U N T I M E X X X X X X X X D H M S S Y S X N U M B E R O F C O M P S R U N N I N G X S E T P O I N T X X X F R A N G E F E V A P P U M P I S X X X E V A P H E A T E R I S X X X L E A...

Page 67: ...N arrow keys are also used for pro gramming the control panel such as changing cooling setpoints setting the daily schedule changing safety setpoints chiller options and setting the clock ENTRY KEYS ENTER ADV key The ENTER key must be pushed after any change is made to the cooling setpoints daily schedule safety setpoints chiller options and the clock Pressing this key enters the newvalues into me...

Page 68: ...N G W A T E R T E M P C O N T R O L L O C A L R E T U R N W A T E R T E M P C O N T R O L 00069IP Unit must first be programmed for Unit Type Liquid Chiller under OPTIONS key to allow programming of appropri ate setpoints Programming of the cooling setpoints daily schedule and safeties is accomplished by using the keys located under the SETPOINTS section The three keys involved are labeled COOLING...

Page 69: ...ber into memory and advance to the RANGE SETPOINT This will be indicated by the cursor moving under the current RANGE setpoint The UP and DOWN arrow keys are used to set the RANGE in 5 F increments to the desired RANGE setpoint After adjusting the setpoint the ENTER ADV key must be pressed to enter the data into memory Notice that the RANGE was programmed for X X F This indicates the SETPOINT to b...

Page 70: ...TS SETPOINTKEY MODEL LOW LIMIT HIGHLIMIT DEFAULT LEAVING CHILLED LIQUID SETPOINT WATER COOLING 40 0 F 70 0 F 44 0 F 4 4 C 21 1 C 6 7 C GLYCOL COOLING 10 0 F 70 0 F 44 0 F 12 2 C 21 1 C 6 7 C LEAVING CHILLED LIQUID 1 5 F 2 5 F 2 0 F CONTROL RANGE 0 8 C 1 4 C 1 1 C RETURNED CHILLED LIQUID SETPOINT WATER COOLING 40 0 F 70 0 F 44 0 F 4 4 C 21 1 C 6 7 C GLYCOL COOLING 10 0 F 70 0 F 44 0 F 12 2 C 21 1 C...

Page 71: ...new Monday schedule This means if the Monday times are not applicable for the whole week then the exceptional days would need to be re programmed to the desired schedule To page to a specific day press the SCHEDULE AD VANCE DAY key The start and stop time of each day may be programmed differently using the UP and DOWN arrow and ENTER ADV keys After SUN Sunday schedule appears on the display a subs...

Page 72: ... from an evaporator freeze up If the suction pres sure drops below the cutout point the system will shut down d d d d d D I S C H A R G E P R E S S U R E C U T O U T 3 9 5 P S I G L O W A M B I E N T T E M P C U T O U T 2 5 0 F L E A V I N G L I Q U I D T E M P C U T O U T 3 6 0 F S U C T I O N P R E S S U R E C U T O U T 4 4 0 P S I G A N T I R E C Y C L E T I M E 6 0 0 S E C There are some excep...

Page 73: ...n the chiller and determines the stages of cooling available Notice in Table 29 her the chiller is a single or dual refrigerant circuit This must be programmed correctly to assure proper chiller operation T O T A L N U M B E R O F C O M P R E S S O R S 6 F A N C O N T R O L O N P R E S S U R E X X X P S I G FA N D I F F E R E N T I A L O F F P R E S S U R E X X X P S I G TABLE 26 PROGRAM KEY LIMIT...

Page 74: ...eaving Mon Sun Discharge Water Temp Control Pressure Display Only Holiday Cutout Schedule Chilled Liquid Suction Setpoint Pressure Cutout Range Remote Setpoint Low Ambient Temp Cutout Range Display Only Leaving Liquid EMS PWM Temperature Remote Temp Cutout Reset Setpoint Anti Recycle Timer Fan Control On Pressure Fan Differential Off Pressure Total Numbers of Compressors Quick Reference Programmin...

Page 75: ... the displays in the order they appear Option 1 Language Option 2 System Switches two system units only This allows both systems to run or S Y S 1 S W I T C H O N S Y S 2 S W I T C H O N D I S P L A Y L A N G U A G E E N G L I S H S Y S 1 S W I T C H O N S Y S 2 S W I T C H O F F S Y S 1 S W I T C H O F F S Y S 2 S W I T C H O N C H I L L E D L I Q U I D W A T E R This keeps system 2 off or This k...

Page 76: ...lected when an ISN or RCC con trol is to be used to control the chiller This mode will allow the ISN to control the following items Remote Start Stop Cooling Setpoint Load Limit and History Buffer Request If the unit receives no valid ISN transmission for 5 minutes it will revert back to the locally programmed values Option 7 Unit Control Mode Unit control is based on return chilled liquid temp It...

Page 77: ...ill be accepted and the cursor will move under the 0 In a similar manner the hour minute meridian month day and year may be programmed whenever the cur sor is under the first letter numeral of the item Jumper J11 on the microboard must be set to the CLKON position to turn on the clock If this is not done the clock will not function Option 8 Units Type Display messages will show units of measure in...

Page 78: ...o adv Display Language Day Time Date System Switches on off Unit Type Chiller or Condensing Unit Chilled Liquid Type water or glycol Ambient Control standard or low Local Remote Mode Unit Control Mode Based on Unit Type Display Units English or Metric Lead Lag Control Fan Control Mode Override Mode Quick Reference Programming Chart Unit Keys Section LD03686 Unit Controls ...

Page 79: ... The Setpoint Low Limit is the Setpoint minus the Cooling Range See Fig ure 6 If the leaving chilled liquid temperature is above the Setpoint High Limit the lead compressor on the lead system will be energized along with the liquid line sole noid Upon energizing any compressor the 60 second Anti Coincidence timer will be initiated If after 60 seconds of run time the leaving chilled liquid temperat...

Page 80: ...nt 46 0 F 7 8 C Range 2 F 1 1 C LWT LEADSYSTEM LAGSYSTEM STEP COMP 1 COMP 2 COMP 3 COMP 1 COMP 2 COMP 3 0 OFF OFF OFF OFF OFF OFF 1 ON HG OFF OFF SEE NOTE 1 OFF OFF OFF 2 ON OFF OFF OFF OFF OFF 3 ON OFF OFF SEE NOTE 2 ON OFF OFF 4 ON ON OFF SEE NOTE 3 OFF OFF OFF 5 ON ON OFF ON OFF OFF 6 ON ON OFF ON ON OFF 7 ON ON ON ON ON OFF 8 ON ON ON ON ON ON LEADSYSTEM LAGSYSTEM STEP COMP 1 COMP 2 COMP 1 COM...

Page 81: ...lenoid is turned off when the LWT SP CR 2 2 Step 3 is skipped when loading occurs 3 Step 4 is skipped when unloading occurs STEP can be viewed using the OPER DATA key and scrolling to COOLING DEMAND TABLE 31 LEAVING CHILLED LIQUID CONTROLFOR 3 COMPRESSORS SINGLE SYSTEM TABLE 32 LEAVING CHILLED LIQUID CONTROLFOR 2 COMPRESSORS SINGLE SYSTEM STEP COMP 1 COMP 2 COMP 3 0 OFF OFF OFF 1 ON HG OFF OFF SEE...

Page 82: ...ol range will be split up into six seven including hot gas segments with the Control Range de termining the separation between segments Note also that the Cooling Setpoint is the point at which all com pressors are off and Cooling Setpoint plus Range Setpoint is the point all compressors are on Specifi cally if the return water temperature is 55 F 12 8 C then all compressors will be on providing f...

Page 83: ...NOTE 1 3 SP 2 CR 4 SP CR 4 SEE NOTE 2 4 SP 2 CR 4 SP CR 4 SEE NOTE 3 5 SP 3 CR 4 SP 2 CR 4 6 SP CR SP 3 CR 4 TABLE 34 RETURN CHILLED LIQUID CONTROLFOR 6 COMPRESSORS 8 STEPS STEP COMPRESSOR ON POINT COMPRESSOROFFPOINT 0 1 SETPOINT 2 SP CR 6 SP CR 8 SEE NOTE 1 3 SP 2 CR 6 SP CR 6 SEE NOTE 2 4 SP 2 CR 6 SP CR 6 SEE NOTE 3 5 SP 3 CR 6 SP 2 CR 6 6 SP 4 CR 6 SP 3 CR 6 7 SP 5 CR 6 SP 4 CR 6 8 SP CR SP 5 ...

Page 84: ...ssure Only The condenser fan control by Ambient Temperature and Discharge Pressure is a feature that is integral to the standard software control If the optional discharge trans ducer is not installed the condenser fans will operate based on outdoor ambient temperature only See Table 36 The condenser fan control by Discharge Pressure is a feature that can be selected if the discharge pressure tran...

Page 85: ...ess 20 PSIG 1 38 Bars DP ctrl_press diff_press 20 PSIG 1 38 Bars 3 2 FANS FWD OAT 65 F 18 3 C OAT 60 F 15 6 C OR AND DP ctrl_press 40 PSIG 2 76 Bars DP ctrl_press diff_press 40 PSIG 2 76 Bars Again notice that condenser fan operation can be pro grammed for either temperature and discharge pressure control or discharge pressure control only as described under Condenser Fan Control The fan control o...

Page 86: ...M inputs The first stage of limiting is ei ther 66 or 50 depending on the number of com pressors on the unit The second stage of limiting is 33 and is only available on 3 and 6 compressor units Table 40 shows the load limiting permitted for the various number of compressors Simultaneous operation of Load Limit ing and EMS PWM Temperature Reset described on following pages cannot oc cur COMPRESSOR ...

Page 87: ...C 2 78 C 10 C This can be viewed by pressing the Cooling Setpoints key twice The new value will be displayed as REM SETP 10 0 C BAS EMS TEMPERATURE RESET OPTION The Remote Reset Option allows the Control Center of the unit to reset the chilled liquid setpoint using a 0 10 VDC input a 4 20 ma input or a contact closure input The Remote Reset circuit board converts the signals mentioned above into p...

Page 88: ...t be in place on the reset board This input is used when a single reset value is needed When the contacts are closed the remote temperature reset board will con vert this contact closure to a PWM signal that is applied to CTB 1 terminals 13 20 To set the PWM output the contacts must be closed on inputs C D and potentiometer R11 located on the front edge of the PC board is adjusted to 10 VDC as mea...

Page 89: ...counters to be viewed modified The ENTER ADV key is used to advance through the digital outputs Using the UP DOWN ARROW keys will turn the respective digital output on off Following is the order of digital outputs that will appear as the ENTER ADV key is pressed SYS 1 COMPRESSOR 1 SYS 1 LIQUID LINE SOLENOID VALVE SYS 1 COMPRESSOR 2 SYS 1 COMPRESSOR 3 SYS 1 HOT GAS BYPASS SOLENOID VALVE SYS 2 COMPR...

Page 90: ...es that the system 1 suction pres sure input is connected to plug 4 pin 10 J4 10 on the microboard It indicates that the voltage is 2 1 volts dc which corresponds to 81 PSIG 5 6 bar suction pres sure The digital inputs will display the input connection and ON OFF status such as This indicates that the flow switch remote start input is connected to plug 9 pin 5 J9 5 on the microboard and is ON ON 3...

Page 91: ... 30VDC UNREGULATED SUPPLY J9 2 UNIT ON OFF SWITCH J9 3 PWM TEMP RESET OR LOAD LIMIT STAGE 2 ON 3 6 COMP UNITS J9 4 LOAD LIMIT STAGE 1 J9 5 FLOW SWITCH AND REMOTE START STOP SYS 1 ZONE THERMOSTAT YCUL ONLY J9 6 SYSTEM 2 ZONE THERMOSTAT YCUL ONLY J9 7 SINGLE SYSTEM SELECT JUMPER SINGLE SYS NO JUMPER TWO SYS J9 8 CR1 SYS 1 MOTOR PROTECTOR HIGH PRESS CUTOUT J9 9 CR2 SYS 2 MOTOR PROCTECTOR HIGH PRESS C...

Page 92: ...YORK INTERNATIONAL 92 FIG 8 MICROBOARD LAYOUT J4 J8 J6 J5 J7 J9 TB3 TB4 TB5 00071VIP TB1 TB2 Control Service and Troubleshooting ...

Page 93: ... the binary inputs This voltage is in refer ence to ground The unit case should be sufficient as a reference point when measuring binary input voltages ANALOG INPUTS Temperature Refer to the unit wiring diagram Temperature inputs are connected to the microboard on plug J6 These analog inputs represent varying dc signals corresponding to varying temperatures All voltages are in reference to the uni...

Page 94: ...OLTAGE RESISTANCE CORRELATION TEMP F VOLTAGE RESISTANCE TEMP C 0 1 71 25619 18 2 1 78 24046 17 4 1 85 22580 16 6 1 93 21214 14 8 2 00 19939 13 10 2 07 18749 12 12 2 15 17637 11 14 2 22 16599 10 16 2 30 15629 9 18 2 37 14721 8 20 2 45 13872 7 22 2 52 13077 6 24 2 59 12333 4 26 2 67 11636 3 28 2 74 10982 2 30 2 81 10370 1 32 2 88 9795 0 34 2 95 9256 1 36 3 02 8750 2 38 3 08 8276 3 40 3 15 7830 4 42 ...

Page 95: ...ut on the display will be 0 psig when the LP switch is open and 200 PSIG 13 79 BARG when the LP switch is closed The discharge transducers have a range from 0 to 400 psig The output will be linear from 5 VDC to 4 5 VDC over the 400 PSIG 27 5 BARG range Following is the formula that can be used to verify the voltage output of the transducer All voltage reading are in reference to ground unit case V...

Page 96: ...cer is not used on the YCAL0014 YCAL0060 a Low Pressure switch will be used Following are the microboard connections for the Low Pressure switch System 1 Low Pressure Switch J4 5 5 VDC regulated supply to LP switch J4 10 input signal to the microboard 0 VDC open switch 5 VDC closed switch J4 2 drain shield connection 0 VDC System 2 Low Pressure Switch J7 5 5 VDC regulated supply to LP switch J7 10...

Page 97: ...am age may result After the ribbon cable is disconnected from microboard ohmmeter leads are connected to the pins representing the specific button to be tested After connecting the meter leads the button being checked is pressed and a reading of zero ohms should be observed After releas ing the button the resistance value should be infinite open circuit Pin 1 is usually identified by a stripe on t...

Page 98: ...rt number for the printer that is packaged specifi cally for YORK is P N 950915576 The cable to connect the printer can either be locally assembled from the parts listed or ordered directly from WEIGH TRONIX under part number 287 040018 Parts The following parts are required 1 WEIGH TRONIX model 1220 printer 2 2 25 5 7cm wide desk top calculator paper 3 25 ft 7 62m maximum length of Twisted Pair S...

Page 99: ... Display board NOTE Contact YORK Service before Replacing circuit Boards FLOW SWITCH REM 1 No chilled liquid flow 1 Check chilled liquid flow STOP NO RUN PERMISSIVE 2 Flow switch improperly 2 Check that the flow switch installed is installed according to manuafacturer s instructions 3 Defective flow switch 3 Replace flow switch 4 Remote cycling device open 4 Check cycling devices connected to term...

Page 100: ...refrigerant 2 Remove refrigerant 3 Air in refrigerant system 3 Evacuate and recharge system 4 Defective discharge 4 Replace discharge pressure pressure transducer transducer Refer to Service section for pressure voltage formula LOW LIQUID TEMP 1 Improperly adjusted leaving 1 Re program the leaving FAULT chilled liquid temp cut out chilled liquid temp cut out glysol only 2 Micropanel setpoint range...

Page 101: ...ART Installation Manual to aid in understanding compres sor operation and capacity control 2 Defective water temperature 2 Compare the display with a sensor thermometer Should be within 2 degrees Refer to Service section for RWT LWT temp voltage table 3 Contactor Overload failure 3 Replace defective part 4 Compressor failure 4 Diagnose cause of failure and replace LACK OF COOLING EFFECT 1 Fouled e...

Page 102: ...o a vacuum Doing so will cause internal arcing of the compressor motor which will result in failure of compressor CONDENSER FAN MOTORS Condenser fan motors are permanently lubricated and require no maintenance CONDENSER COILS Dirt should not be allowed to accumulate on the con denser coil surfaces Cleaning should be as often as necessary to keep coil clean Exercise care when cleaning the coil so t...

Page 103: ...age a zero will be sent Tables 49 50 show the data values and page listings for this unit ISN CONTROL TABLE 48 ISN RECEIVED DATA TABLE 49 ISN TRANSMITTED DATA ISNPAGE CONTROLDATA P03 SETPOINT P04 LOAD LIMIT STAGE 0 1 2 P05 COOLING RANGE DAT MODE ONLY P06 P07 START STOP COMMAND P08 P09 P10 HISTORY BUFFER REQUEST ISNPAGE TYPE DATA P11 ANALOG LEAVING CHILLED LIQUID TEMP P12 ANALOG RETURN CHILLED LIQU...

Page 104: ... LOCAL 1 REMOTE P53 DIGITAL UNITS 0 IMPERIAL 1 SI P54 DIGITAL LEAD LAG CONTROL MODE 0 MANUAL 1 AUTO P55 DIGITAL P56 CODED SYS 1 OPERATIONAL CODE P57 CODED SYS 1 FAULT CODE P58 CODED SYS 2 OPERATIONAL CODE P59 CODED SYS 2 FAULT CODE P60 CODED SYS 1 COMP RUNNING ISNPAGE TYPE DATA P61 CODED SYS 1 COND FANS RUNNING P62 CODED SYS 2 COMP RUNNING P63 CODED SYS 2 COND FANS RUNNING P64 CODED P65 ANALOG UNI...

Page 105: ...SSURE 8 NO RUN PERMISSIVE 8 HIGH MOTOR CURRENT 9 NO COOL LOAD 9 LLSV NOT ON 10 ANTI COINCIDENCE TIMER ACTIVE 10 LOW BATTERY WARNING 11 ANTI RECYCLE TIMER ACTIVE 11 HIGH OIL TEMPERATURE 12 MANUAL OVERRIDE 12 HIGH DISCHARGE TEMPERATUE 13 SUCTION LIMITING 13 IMPROPER PHASE ROTATION 14 DISCHARGE LIMITING 14 LOW MOTOR CURRENT MP HPCO 15 CURRENT LIMITING 15 MOTOR CURRENT UNBALANCED 16 LOAD LIMITING 16 L...

Page 106: ...YORK INTERNATIONAL 106 ELEMENTARY DIAGRAM YCAL0043SC YCAL0087SC FIG 11 ELEMENTARY DIAGRAM ...

Page 107: ...YORK INTERNATIONAL 107 FORM 150 62 NM2 LD04362 ELEMENTARY DIAGRAM YCAL0043SC YCAL0087SC FIG 11 ELEMENTARY DIAGRAM Cont d ...

Page 108: ...YORK INTERNATIONAL 108 ELEMENTARY DIAGRAM YCAL0043SC YCAL0087SC LD03532 FIG 12 ELEMENTARY DIAGRAM ...

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Page 110: ...YORK INTERNATIONAL 110 ELEMENTARY DIAGRAM YCAL0107SC FIG 13 ELEMENTARY DIAGRAM ...

Page 111: ...YORK INTERNATIONAL 111 FORM 150 62 NM2 FIG 13 ELEMENTARY DIAGRAM Cont d LD03533 ELEMENTARY DIAGRAM YCAL0107SC ...

Page 112: ...YORK INTERNATIONAL 112 FIG 14 ELEMENTARY DIAGRAM ELEMENTARY DIAGRAM YCAL0107SC LD03534 ...

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Page 114: ...YORK INTERNATIONAL 114 ELEMENTARY DIAGRAM YCAL0117SC YCAL0173SC FIG 15 ELEMENTARY DIAGRAM ...

Page 115: ...YORK INTERNATIONAL 115 FORM 150 62 NM2 ELEMENTARY DIAGRAM YCAL0117SC YCAL0173SC LD03535 FIG 15 ELEMENTARY DIAGRAM Cont d ...

Page 116: ...YORK INTERNATIONAL 116 ELEMENTARY DIAGRAM YCAL0117SC YCAL0173SC FIG 16 ELEMENTARY DIAGRAM ...

Page 117: ...YORK INTERNATIONAL 117 FORM 150 62 NM2 ELEMENTARY DIAGRAM YCAL0117SC YCAL0173SC LD03536 FIG 16 ELEMENTARY DIAGRAM Cont d ...

Page 118: ...YORK INTERNATIONAL 118 ELEMENTARY DIAGRAM YCAL0197SC YCAL0253SC FIG 17 ELEMENTARY DIAGRAM ...

Page 119: ...YORK INTERNATIONAL 119 FORM 150 62 NM2 ELEMENTARY DIAGRAM YCAL0197SC YCAL0253SC LD03537 FIG 17 ELEMENTARY DIAGRAM Cont d ...

Page 120: ...YORK INTERNATIONAL 120 ELEMENTARY DIAGRAM YCAL0197SC YCAL0253SC FIG 18 ELEMENTARY DIAGRAM ...

Page 121: ...YORK INTERNATIONAL 121 FORM 150 62 NM2 LD03538 ELEMENTARY DIAGRAM YCAL0197SC YCAL0253SC FIG 18 ELEMENTARY DIAGRAM Cont d ...

Page 122: ...600 AEQM 1300 AEQM 1600 AEQM 1300 YCAL0157 AEQM 1600 AEQM 1600 AEQM 1600 AEQM 1600 YCAL0173 AEQM 1600 AEQM 1600 AEQM 1600 AEQM 1600 YCAL0197 AEQM 1625 AEQM 1600 AEQM 1625 AEQM 1600 YCAL0217 AEQM 1625 AEQM 1600 AEQM 1625 AEQM 1600 YCAL0237 AEQM 1625 AEQM 1625 AEQM 1625 AEQM 1625 YCAL0253 AEQM 1625 AEQM 1625 AEQM 1625 AEQM 1625 APPENDIX 1 ALUMINUM FINS 1 DEFLECTION WEIGHT DISTRIBUTION POINT SPRING L...

Page 123: ...efer to Dimensions for Weight Distribution Point Location A D MODEL A B C D YCAL0043 CP 1 27 CP 1 27 CP 1 27 CP 1 27 YCAL0057 CP 1 27 CP 1 27 CP 1 27 CP 1 27 YCAL0073 CP 1 27 CP 1 27 CP 1 27 CP 1 27 YCAL0087 CP 1 27 CP 1 28 CP 1 27 CP 1 28 YCAL0107 CP 1 28 CP 1 28 CP 1 28 CP 1 28 YCAL0117 CP 2 27 CP 2 27 CP 2 27 CP 2 27 YCAL0133 CP 2 27 CP 2 27 CP 2 27 CP 2 27 YCAL0147 CP 2 27 CP 2 27 CP 2 27 CP 2...

Page 124: ...YORK INTERNATIONAL 124 APPENDIX 1 DIMENSIONS FIG 19 TYPE CP 1 FIG 20 TYPE CP 2 LD03839 LD03840 ...

Page 125: ...1 4 7 1 4 5 8 3 8 AEQM 99 7 5 1 2 4 1 2 2 1 2 5 8 1 4 7 1 4 5 8 3 8 AEQM 1000 8 1 2 6 1 2 6 4 1 2 3 4 3 8 8 3 8 7 8 1 2 AEQM 1300 8 1 2 6 1 2 6 4 1 2 3 4 3 8 8 3 8 7 8 1 2 AEQM 1600 8 1 2 6 1 2 6 4 1 2 3 4 3 8 8 3 8 7 8 1 2 AEQM 1625 8 1 2 6 1 2 6 4 1 2 3 4 3 8 8 3 8 7 8 1 2 AEQM 1628 8 1 2 6 1 2 6 4 1 2 3 4 3 8 8 3 8 7 8 1 2 LD04045 FIG 21 R SPRING SEISMIC ISOLATORS ...

Page 126: ... way If required bolt mountings to floor through slots 4 Set the machine or base on the mountings The weight of the machine will cause the upper housing of the mount to go down possibly resting on the lower housing 5 If clearance X is less than 1 4 on any mounting with wrench turn up one complete turn on the adjust ing bolt of each mounting Repeat this procedure until 1 4 clearance at X is obtaine...

Page 127: ...the equip ment or equipment base mounting holes Shim and or grout as required to level all isolator base plates A A 1 4 maximum difference in elevation can be tolerated 4 Anchor all isolators to floor or subbase as required For installing on concrete VMC recommends HILTI type HSL heavy duty anchors or equal 5 Remove cap screw C and save Gently place ma chine or machine base on top of bolt B Instal...

Page 128: ... YORK International Corp 908 225 0606 NEVADA Las Vegas YORK International Corp 702 873 2200 NEW YORK Buffalo YORK International Corp 716 633 2172 New York YORK International Corp 212 843 1602 NORTH CAROLINA Charlotte YORK International Corp 704 598 0000 Greensboro YORK International Corp 336 299 9675 Raleigh YORK International Corp 919 829 1700 OHIO Cincinnati YORK International Corp 513 489 8871 ...

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Page 132: ...Team 36USC380 P O Box1592 York PennsylvaniaUSA 17405 1592 Subject to change without notice Printed in USA Copyright by York International Corporation 1999 ALL RIGHTS RESERVED Form 150 62 NM2 699 VIP 5M 699 9 24 Supersedes Nothing Code YMLC ...

Page 133: ...RANGE PROGRAM SETTINGS For optimum chilled liquid temperature control and reduced compressor cycling leaving chilled liquid setpoint control range settings should be equal to or greater than the minimum ranges specified in the Table 1 below These recommended settings vary according to the number of compressors in the chiller and the chilled liquid differential actually measured across the evaporat...

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