York YCAG18 Manual Download

Page: 65 / 100

YORK INTERNATIONAL

FORM 150.40-NM25

STAGE

OFF

Lag Compr. Loader Stage 2

Setpoint plus 1.2°F (.66°C)

Setpoint plus 0.6°F (.33°C)

Lag Compressor (Stage 1)

Setpoint plus 0.6°F (.33°C)

Setpoint

Lead Compr. Loader Stage 2

Setpoint

Setpoint minus 0.6°F (.33°C)

Lead Compressor (Stage 1)

Setpoint minus 0.6°F (.33°C)

Setpoint minus 1.2°F (.66°C)

COOLING RANGE
SWITCH = 1

COOLING RANGE
OF

1.2°F (

.66°C)

DUAL CIRCUIT UNITS

STAGE

OFF

Lag Compr. Loader Stage 2

Setpoint plus 1.4°F (.77°C)

Setpoint plus 0.7°F (.38°C)

Lag Compressor (Stage 1)

Setpoint plus 0.7°F (.38°C)

Setpoint

Lead Compr. Loader Stage 2

Setpoint

Setpoint minus 0.7°F (.38°C)

Lead Compressor (Stage 1)

Setpoint minus 0.7°F (.38°C)

Setpoint minus 1.4°F (.77°C)

COOLING RANGE
SWITCH = 2

COOLING RANGE
OF

1.4°F (

.78°C)

STAGE

OFF

Lag Compr. Loader Stage 2

Setpoint plus 1.5°F (.83°C)

Setpoint plus 0.8°F (.44°C)

Lag Compressor (Stage 1)

Setpoint plus 0.7°F (.38°C)

Setpoint

Lead Compr. Loader Stage 2

Setpoint

Setpoint minus 0.8°F (.44°C)

Lead Compressor (Stage 1)

Setpoint minus 0.7°F (.38°C)

Setpoint minus 1.5°F (.83°C)

COOLING RANGE
SWITCH = 3

COOLING RANGE
OF

1.5°F (

.83°C)

STAGE

OFF

Lag Compr. Loader Stage 2

Setpoint plus 1.6°F (.88°C)

Setpoint plus 0.8°F (.44°C)

Lag Compressor (Stage 1)

Setpoint plus 0.8°F (.44°C)

Setpoint

Lead Compr. Loader Stage 2

Setpoint

Setpoint minus 0.8°F (.44°C)

Lead Compressor (Stage 1)

Setpoint minus 0.8°F (.444°C)

Setpoint minus 1.6°F (.88°C)

COOLING RANGE
SWITCH = 4

COOLING RANGE
OF

1.6°F (

.88°C)

STAGE

OFF

Lag Compr. Loader Stage 2

Setpoint plus 1.8°F (.99°C)

Setpoint plus 0.9°F (.49°C)

Lag Compressor (Stage 1)

Setpoint plus 0.9°F (.49°C)

Setpoint

Lead Compr. Loader Stage 2

Setpoint

Setpoint minus 0.9°F (.49°C)

Lead Compressor (Stage 1)

Setpoint minus 0.9°F (.49°C)

Setpoint minus 1.8°F (.99°C)

COOLING RANGE
SWITCH = 5

COOLING RANGE
OF

1.8°F (

.99°C)

STAGE

OFF

Lag Compr. Loader Stage 2

Setpoint plus 1.9°F (1.05°C)

Setpoint plus 1.1°F (.61°C)

Lag Compressor (Stage 1)

Setpoint plus 1.1°F (.61°C)

Setpoint

Lead Compr. Loader Stage 2

Setpoint

Setpoint minus 1.1°F (.61°C)

Lead Compressor (Stage 1)

Setpoint minus 1.0°F (.55°C)

Setpoint minus 1.9°F (1.05°C)

COOLING RANGE
SWITCH = 6

COOLING RANGE
OF

1.9°F (

1.05°C)

STAGE

OFF

Lag Compr. Loader Stage 2

Setpoint plus 2.0°F (1.11°C)

Setpoint plus 1.0°F (.55°C)

Lag Compressor (Stage 1)

Setpoint plus 1.0°F (.55°C)

Setpoint

Lead Compr. Loader Stage 2

Setpoint

Setpoint minus 1.0°F (.55°C)

Lead Compressor (Stage 1)

Setpoint minus 1.0°F (.55°C)

Setpoint minus 2.0°F (1.11°C)

COOLING RANGE
SWITCH = 7

COOLING RANGE
OF

2.0°F (

1.11°C)

Summary of Contents for YCAG18

Page 1: ...Rev 2 Brine Unit GEII 5 BR Rev 1 Metric Unit GEII 5 M Rev 1 Must be used with 031 00805 Rev C Micrologic Board BEFORE MAY 1 1987 EFFECTIVE MAY 1 1987 EFFECTIVE JAN 1990 LCH130W YCWK11 YCWL12 YCWJ45PR0...

Page 2: ...30 3 60 40 380 3 60 46 460 3 60 50 380 415 3 50 64 346 3 50 CONDENSER CODE 10 11 12 13 14 15 16 17 18 19 COOLER CODE Q R M N K L I J G H AIR COOLED YORK CHILLER NOMENCLATURE 2 3 5 8 9 36 44 50 51 60 6...

Page 3: ...120 550 M12 N13 120 580 K14 L15 120 580 I16 J17 150 640 G18 H19 200 700 0 17 8 With Optional Low Ambient Kit LEAVING LIQUID MIN 40 4 4 TEMP F C MAX 50 10 AIR ON MIN 35 1 7 CONDENSER F C MAX 130 54 4...

Page 4: ...n the top of the unit The area within the clearances shown above and area under the unit must be kept clear of all obstructions that would impede free air flow to the unit In installations where winte...

Page 5: ...wall can be higher than the top of the unit The area within the clearances shown above and area under the unit must be kept clear of all obstructions that would impede free air flow to the unit In ins...

Page 6: ...25 12 IF SYS 2 100 80 60 40 20 100 83 67 100 86 71 57 100 88 75 62 LEAD 50 33 17 43 29 14 50 38 25 12 OIL SYS 1 3 3 3 3 3 CHARGE GALS SYS 2 3 3 3 3 CONDENSER DWP 450 PSIG NO OF FANS 30 Dia Direct Driv...

Page 7: ...d the normal reach of service personnel a suit able catwalk must be constructed around the unit The catwalk must be capable of supporting service person nel their equipment and the reciprocating compr...

Page 8: ...31 2 32 2 27 MOUNTING ALUMINUM COIL UNITS Isolator Locations Chiller J K L M N P R S Model No Type Sizes YCAQ10 R1 2 32 2 32 2 27 2 31 YCAM12 N13 1 31 2 28 2 28 2 28 1 32 2 28 2 28 1 32 YCAK14 L15 2...

Page 9: ...icing thermometers and pressure gauges are recommended for installation in the inlet and outlet water lines One connection point plug ged is provided in each cooler nozzle Thermometers and gauges are...

Page 10: ...10 YORK INTERNATIONAL UNIT CONTROLS OPERATION YCAQ10 and YCAR11 SINGLE CIRCUIT UNITS FIG 4 WIRING DIAGRAM YCAQ10 and YCAR11 LD01711...

Page 11: ...YORK INTERNATIONAL 11 FORM 150 40 NM25 SINGLE CIRCUIT UNITS LD01712 ELEMENTARY DIAGRAM FIG 4 CONTINUED...

Page 12: ...12 YORK INTERNATIONAL SINGLE CIRCUIT UNITS FIG 4 CONTINUED LD01713 CONNECTION DIAGRAM ELECTRICAL BOX...

Page 13: ...YORK INTERNATIONAL 13 FORM 150 40 NM25 SINGLE CIRCUIT UNITS FIG 4 CONTINUED CONNECTION DIAGRAM SYSTEM WIRING LD01714...

Page 14: ...14 YORK INTERNATIONAL YORK RECIP MICROCOMPUTER CONTROL CENTER SINGLE CIRCUIT UNITS FIG 5 CONTROL CENTER SINGLE CIRCUIT UNITS STANDARD ENGLISH MODELS LD01777...

Page 15: ...YORK INTERNATIONAL 15 FORM 150 40 NM25 SINGLE CIRCUIT UNITS FIG 6 CONTROL CENTER SINGLE CIRCUIT UNITS OPTIONAL ENGLISH MODELS WATER COOLING RANGE C SELECT LD01777 R...

Page 16: ...ling and remote chilled water temp select These remote inputs are converted to logic levels for use by the Micro Logic Board COMBO BOARD This board receives analog information from transducer pressure...

Page 17: ...YORK INTERNATIONAL 17 FORM 150 40 NM25 FIG 8 CONTROL PANEL EXTERIOR FIG 7 CONTROL POWER PANEL FIG 9 POWER PANEL FIG 10 CONTROL PANEL BACK SIDE FIG 11 CONTROL PANEL INTERIOR 00017TG...

Page 18: ...data displayed is shown below left In the event of a failure the failure can be displayed by selecting 18 of the Select Data Display The mode of failure will then be indicated by a number from 0 11 T...

Page 19: ...ice EMS BAS etc is telling the sys tem to turn off These are devices whose dry contacts may be connected in series across ter minals 3 and 4 of the terminal block in the lower left side of the Power S...

Page 20: ...rating data on the system at the instant of shutdown Any display se lected by the operator will show stored data This data will remain in storage until the SYSTEM On Off Switch is placed in the OFF po...

Page 21: ...FLA or 4 6VDC 115 FLA when Run Time 4 sec This protection assures that both contactors are energized all C T s are connected and operating and that the motor is not drawing excessive as well as too li...

Page 22: ...int For Brine applications the setpoint can be varied from 0 F 17 8 C to 40 F 4 4 C on the Combo Board by adjusting R2 An F11 code will appear for this safety AUTOMATIC RESET SAFETIES Shutdown Safety...

Page 23: ...ption in OPTIONS section for more information OPTIONAL REMOTE TEMPERATURE SETPONT RESET Remote Temperature Setpoint Reset capabilities can be added by adding an optional Digital Input Board and con fi...

Page 24: ...unit on or off To operate the unit the switch must be in the ON position FIG 15 START STOP CONTROLS UNIT START UP SEQUENCE A simplified start up sequence is provided on the con trol panel to aid the...

Page 25: ...11 F 6 12 F 7 14 F Leaving water temperatures below 15 F are not permitted regard less of whether leaving or return water temperature control is se lected The GEII 4 REV 2 may also be labeled GEII 4S...

Page 26: ...her the Computed Setpoint falls into the temperature range of 9 9 C to 0 C or 0 to 9 9 C 1 If the Computed Setpoint falls into the tempera ture range from 9 9 to 0 C place SW1 on the Micro Logic Board...

Page 27: ...hieved Mini mum RWT setpoints for various cooling ranges can be computed by adding the cooling range to 9 9 C I See page 29 for determining loading and unloading points LEAVING WATER TEMPERATURE LWT C...

Page 28: ...ro Logic Board to the ON position see Page 32 D Set the two Setpoint Switches to the Desired LWT Setpoint selected in Step B i e 4 4 4 4 C from Step B if SW1 on the Micro Logic Board is ON Step B See...

Page 29: ...ge 4 Cooling 52 5 11 4 Loader ON Stage 3 Loader OFF Stage 4 Range 50 0 10 00 Loader ON Stage 2 Loader OFF Stage 3 10 F 5 6 C 47 5 8 6 Compressor ON Unloaded Stage 1 Loader OFF Stage 2 45 7 2 Compresso...

Page 30: ...Stage 3 Setpoint plus 0 9 F 49 C Setpoint Loader Stage 2 Setpoint Setpoint minus 0 9 F 49 C Compressor Stage 1 Setpoint minus 0 9 F 49 C Setpoint minus 1 8 F 99 C COOLING RANGE SWITCH 5 COOLING RANGE...

Page 31: ...BOARD STANDARD ENGLISH UNITS 1 Spare 2 OFF Low Ambient Cut out 35 F ON Low Ambient Cut out adjustable 0 50 F R1 Combo Board 3 OFF RWT Control Standard as Shipped ON LWT Control 4 OFF No EMS Control N...

Page 32: ...Computed RWT Setpoint page 26 or Desired LWT Setpoint page 28 falls into the range of 0 to 9 9 C 2 OFF Low Ambient Cut out 1 7 C ON Low Ambient Cut out adjustable 17 8 to 10 C R1 Combo Board 3 OFF RW...

Page 33: ...C Low Suction Pressure Cut Out This cut out is factory set at 44 PSI 303 kPa This should never be changed unless brine or glycol is added to the system When brine or glycol is added lower the low pre...

Page 34: ...com See Fig 7 See Fig 9 pressor crankcase solid liquid refrigerant in the liquid indicator and usually no more than 2 PSIG 13 8 kPaG variation in suction pressure for any given set of operat ing cond...

Page 35: ...start at T 0 At this time the Micro Board will check all system conditions If no safeties are tripped and cooling demand is present the com pressor will start unloaded If a safety is tripped or no coo...

Page 36: ...CONTROL The function of the compressor capacity control system is to automatically adjust the compressor pumping ca pacity to balance with the cooling load at a predeter mined return water temperatur...

Page 37: ...indication of contamination basically due to moisture If it is necessary to charge oil refer to item 3 under the ANNUAL MAINTENANCE section 3 Check the refrigerant circuit for leaks ANNUAL MAINTENANCE...

Page 38: ...ainer at all times to avoid entrance of air into the compressor I Before opening the suction or discharge stop valves connect a vacuum pump to the pump out port in the discharge stop valve Pump out po...

Page 39: ...arge Pressure section may not Energize F4 Fault Code 2 External Motor Overload tripped 2 Check for defective External Motor Overload wiring motor problems 3 Improper System High Voltage 3 Check System...

Page 40: ...erating 1 Check fans Fuses and Contactors Cuts out on High Dis or rotating backwards Air flow must be UP charge Pressure as 2 Too much Refrigerant 2 Remove Refrigerant sensed by Micro Proces 3 Air in...

Page 41: ...won t load 1 Suction Pressure 105 PSIG 723 kPaG 1 Excessive load Check OPERATING solenoid valve de ener System 1 or 95 PSIG 654 5 kPaG LIMITATIONS on page 3 Allow gizes to load compres System 2 unit t...

Page 42: ...YORK INTERNATIONAL UNIT CONTROLS OPERATION YCAM12 YCAN13 YCAK14 YCAL15 YCAI16 YCAJ17 YCAG18 YCAH19 DUAL CIRCUIT UNITS FIG 29 WIRING DIAGRAM YCAM12 N13 K14 L15 I16 J17 G18 H19 LD01715 ELEMENTARY DIAGR...

Page 43: ...YORK INTERNATIONAL 43 FORM 150 40 NM25 DUAL CIRCUIT UNITS FIG 29 CONTINUED ELEMENTARY DIAGRAM LD01716...

Page 44: ...44 YORK INTERNATIONAL DUAL CIRCUIT UNITS FIG 29 CONTINUED CONNECTION DIAGRAM ELECTRICAL BOX LD01717...

Page 45: ...YORK INTERNATIONAL 45 FORM 150 40 NM25 DUAL CIRCUIT UNITS FIG 29 CONTINUED CONNECTION DIAGRAM SYSTEM WIRING LD01718...

Page 46: ...46 YORK INTERNATIONAL DUAL CIRCUIT UNITS YORK RECIP MICROCOMPUTER CONTROL CENTER FIG 30 CONTROL CENTER DUAL CIRCUIT UNITS STANDARD ENGLISH MODELS...

Page 47: ...YORK INTERNATIONAL 47 FORM 150 40 NM25 DUAL CIRCUIT UNITS FIG 31 CONTROL CENTER DUAL CIRCUIT UNITS OPTIONAL METRIC MODELS...

Page 48: ...ional Digital Input Metric values require the EPROM and Control Panel to be changed This option can be ordered through Product Marketing Board and provides system control through the Relay Output Boar...

Page 49: ...ORK INTERNATIONAL 49 FORM 150 40 NM25 DUAL CIRCUIT UNITS FIG 32 CONTROL POWER PANEL FIG 33 CONTROL PANEL EXTERIOR FIG 34 POWER PANEL FIG 35 CONTROL PANEL BACK SIDE FIG 36 CONTROL PANEL INTERIOR 00018T...

Page 50: ...n be translated by comparing the number to the FAULT CODES listing on the control panel or page 52 Note This is FLA not RLA Compressor data plates list RLA current which is typical cur rent draw under...

Page 51: ...timer It will be available for start or will restart when the 2 minute start up and 10 minute anti recycle timers time out and demand allows The c code will disappear as soon as the timers time out FI...

Page 52: ...An F Code overrides any other letter code display which may appear See the MANUAL RESET FAULTS and AUTOMATIC RESET FAULTS Section for a more de tailed explanation of the fault codes Pages 53 54 When a...

Page 53: ...for a letter code telling the operator the anti recycle timer is in effect After 3 faults an F code will be displayed and the system will lockout and not restart The fault can be cleared and the compr...

Page 54: ...ly providing the anti recycle timer has timed out and a minimum 2 minute delay has passed An F9 code will be displayed while the temperature is high The F will automatically disappear when temp drops...

Page 55: ...rride Whenever the lead sys tem faults the Micro automatically switches the lag system to the lead in an effort to keep chilled water temperature nearer to setpoint ANTI RECYCLE TIMER Any time a compr...

Page 56: ...nd 21 seconds Closure for a period shorter than 1 second will be ignored by the Micro Logic Board Closure slightly longer than 21 seconds will be treated as 21 seconds The contact closure corresponds...

Page 57: ...OLS Before attempting start up the temperature and start stop controls should be properly set and understood FIG 40 START STOP LEAD LAG CONTROLS lead or lag compressor if SW7 on the Micro Logic Board...

Page 58: ...ed The GEII 5 REV 2 may also be labeled GEII 5S REV 2 The two EPROMs are identical RWT Control From the WATER COOLING RANGE CODES SELECT determine the appropriate control range per design and select i...

Page 59: ...9 C can be programmed into the panel if the Micro Logic Board is equipped with a GEII 5M REV 2 EPROM Fig 51 Follow the steps be low to set up the panel switches prior to operating the chiller A Befor...

Page 60: ...s Leaving Water Temperature LWT Control Follow the steps below to set up the panel switches prior to operating the chiller NOTE YORK does not recommend utilizing LWT Con trol unless 6 8 stages of opti...

Page 61: ...Board to the ON position See Fig 51 D Set the two Setpoint switches to the Desired LWT Setpoint selected in Step B i e 4 4 4 4 C from Step B SW1 on the Micro Logic Board is ON Step B See Fig 47 DUAL C...

Page 62: ...ling Range 10 F 12 2 C System Switches Both ON SYS 1 LEAD Sw 5 on Micro OFF Typical 4 stages of unloading Sw 3 on Micro OFF RWT Control Return Water Temp F C 55 12 8 Lag Compressor Loads Stage 2 Cooli...

Page 63: ...3 Setpoint plus 1 1 F 61 C Setpoint plus 0 8 F 44 C Lag Compr Loader Stage 2 Setpoint plus 0 9 F 49 C Setpoint plus 0 5 F 27 C Lag Compressor Stage 1 Setpoint plus 0 6 F 33 C Setpoint plus 0 2 F 11 C...

Page 64: ...ge 2 Setpoint plus 1 1 F 61 C Setpoint plus 0 4 F 22 C Lag Compressor Stage 1 Setpoint plus 0 6 F 33 C Setpoint minus 0 1 F 05 C Lead Compr Loader Stage 4 Setpoint plus 0 2 F 11 C Setpoint minus 0 7 F...

Page 65: ...nt plus 1 6 F 88 C Setpoint plus 0 8 F 44 C Lag Compressor Stage 1 Setpoint plus 0 8 F 44 C Setpoint Lead Compr Loader Stage 2 Setpoint Setpoint minus 0 8 F 44 C Lead Compressor Stage 1 Setpoint minus...

Page 66: ...l No Digital Input Board Standard As Shipped ON EMS Control Optional Digital Input Board Installed 5 OFF 4 Stage Control Standard as Shipped ON 8 Stage Control Optional as ordered for 5 6 7 or 8 stage...

Page 67: ...oard 3 OFF RWT Control Standard as Shipped ON LWT Control 4 OFF No EMS Control No Digital Input Board Standard As Shipped ON EMS Control Optional Digital Input Board In stalled 5 OFF 4 Stage Control S...

Page 68: ...ith YORK C oil prior to start up Priming should be done through the Schrader fitting at the compressor oil pump Stroke oil pump 10 times to prime the lubrication circuit E The compressor oil level mus...

Page 69: ...pressure for any given set of operating conditions Allow the compressor to run for a short time being DUAL CIRCUIT UNITS ready to stop it immediately if any unusual noise or other adverse condition s...

Page 70: ...start a 2 minute start up timer 4 At the end of the 2 minute timer the 10 minute anti DUAL CIRCUIT UNITS recycle timer will start at T 0 At this time the Micro Board will check all system conditions...

Page 71: ...e of the following conditions result in low motor cur rent or low suction pressure faults 1 Discharge pressures run below 140 PSI 2 Glycol is being utilized and leaving chilled liquid tem peratures be...

Page 72: ...ance with the cooling load at a pre deter mined return water temperature and to permit the com pressor to start under partial load The compressor ca pacity control system is actuated by means of high...

Page 73: ...o charge oil refer to item 3 under the ANNUAL MAINTENANCE section 3 Check the refrigerant circuit for leaks DUAL CIRCUIT UNITS ANNUAL MAINTENANCE It is recommended that the following items be checked...

Page 74: ...Stop the vacuum pump close the shut off valve and open the discharge valve fully before disconnecting the line from the vacuum pump Disconnect the vacuum pump and replace the plug in the pump out por...

Page 75: ...ay not Energize F4 or F8 Fault Code 2 External Motor Overload tripped 2 Check for defective External Motor Overload wiring motor problems 3 Improper System High Voltage 3 Check System High Voltage Sup...

Page 76: ...ting backwards Air flow must be UP charge Pressure as 2 Too much Refrigerant 2 Remove Refrigerant sensed by Micro Proces 3 Air in Refrigerant System 3 Evacuate and recharge sor via high discharge 4 De...

Page 77: ...back of Liquid 2 Adjust Thermal Expansion Valve TXV Refrigerant or Replace Power Element Check TXV Bulb Location Should be located on suction line at least 8 10 from nearest elbow Bulb should be at 4...

Page 78: ...stem 1 or 320 PSIG 2205 kPaG System 2 3 Demand not great enough 3 OK 4 Defective Loading Solenoid 4 Replace Compressor Loading Solenoid 5 Faulty Wiring to Loading Solenoid 5 Check Wiring 6 Defective W...

Page 79: ...ilable depending upon whether the unit is equipped for standard or brine duty Leaving water temperatures of below 15 F 9 4 C are not per mitted regardless of whether leaving or return water temperatur...

Page 80: ...mended In other words to maintain the 40 F 4 4 C RWT setpoint the contacts between terminals 75 and 76 must be closed for a period of 8 5 seconds every 20 minutes If this is not refreshed at least eve...

Page 81: ...0 NM25 SINGLE CIRCUIT UNITS FIG 55 CONNECTION DIAGRAM FIG 56 FIELD WIRING AND ELEMENTARY SCHEMATIC LD01712 D LD01630 THIS RESISTOR MUST BE REMOVED FIELD WIRING CUSTOMER SUPPLIED DRY CONTACTS FROM BAS...

Page 82: ...d to This will assure that proper operation will result 1 The printer option is adaptable to all REV levels of Micro Logic Boards and EPROMS software No modifications are necessary to the panel 2 Maxi...

Page 83: ...oard See the illustration below FIG 57 ASSEMBLY AND WIRING Resistors should be wired into the 031 00929 102 cable Insulate connection points on the resistors as needed Assembly Wiring All components s...

Page 84: ...y in the use of the printer This includes damages to the printer and the Micro Logic Board or chiller operation problems that may result SINGLE CIRCUIT UNITS FIG 59 REMOTE PRINT OUT HOOK UP FIG 58 PRI...

Page 85: ...lenoid valve in the condenser liquid line is energized to stop flow in one half of the condenser that is one V bank in the condenser NOTE The valve has an orifice which has been sized to prevent liqui...

Page 86: ...nce The chart also indi cates when the low ambient liquid line solenoid valve LSA functions FIG 61 FAN CYCLING AMBIENT TEMP SYSTEM 1 FANS LOW AMBIENT SOLENOID Above 65 F 18 3 C Fan C D ON 4 sec after...

Page 87: ...UNITS reset ranges are available depending upon whether the unit is equipped for standard or brine duty Standard Water Duty Setpoint 40 70 G E II 5 REV 2 English EPROM Installed On Micro Logic Board...

Page 88: ...as a signal to change the RWT setpoint back to the original setpoint of 25 F 3 9 C on the Control Panel See Fig 62 63 and 64 for loca tion and wiring to TB8 DUAL CIRCUIT UNITS FIG 62 COMPONENT LOCATI...

Page 89: ...M25 DUAL CIRCUIT UNITS LD01636 FIG 63 CONNECTION DIAGRAM FIG 64 FIELD WIRING AND ELEMENTARY SCHEMATIC FIELD WIRING CUSTOMER SUPPLIED DRY CONTACTS FROM BAS EMS FAX 4000 SWITCH OR RELAY THIS RESISTOR MU...

Page 90: ...e that proper operation will result 1 The printer option is adaptable to all REV levels of Micro Logic Boards and EPROMS software No modifications are necessary to the panel 2 Maximum cable length bet...

Page 91: ...paper 3 25 ft Twisted Pair Shielded Cable minimum 3 con ductor 18 AWG Stranded 300V min insulation 4 2 1 KW 1 4 W resistors 5 1 031 00929 102 adapter cable Note This 4 cable may already be installed i...

Page 92: ...ers This makes the equip ment susceptable to operation problems or miswiring which may cause damage to the printer and Micro Logic Board YORK assumes no responsibility for assistance or damge in the u...

Page 93: ...one or both sys tems the respective contacts will open breaking the alarm circuit A 28VDC or 120VAC external alarm cir FIG 68 ALARM KIT RELAY OUTPUT BD 2 LOCATION cuit by others must be wired into the...

Page 94: ...reduce the capacity of the condenser when the ambient temperature is in the 0 F to 35 F range This assures that adequate discharge pressures can be maintained at low temperatures eliminating low suct...

Page 95: ...cates when the low ambient liquid line solenoid valve LSA functions Fan G not present on all chillers See Fig 70 CONDENSER FAN LOCATIONS AMBIENT TEMP SYSTEM 1 FANS SYSTEM 2 FANS LOW AMBIENT SOLENOID A...

Page 96: ...1 231 8 44 4 112 233 6 45 0 113 235 4 45 6 114 237 2 46 1 115 239 0 46 7 116 240 8 47 2 117 242 6 47 8 118 244 4 48 3 119 246 2 48 9 120 248 0 49 4 121 249 8 50 0 122 251 6 50 6 123 253 4 51 1 124 255...

Page 97: ...Ambient Temperature Cut out Please make a note in the manual that this adjustment cannot be made unless SW2 on the Micrologic Board is in the ON position on REV C Micrologic Boards This procedure ment...

Page 98: ...You should be aware that these black plastic panels are coated inside with a conductive com pound This is intended to be a barrier against RFI EMI emissions Because of this conductive coating you shou...

Page 99: ...YORK INTERNATIONAL 99 FORM 150 40 NM25...

Page 100: ...lympic Team 36USC380 P O Box 1592 York Pennsylvania USA 17405 1592 Subject to change without notice Printed in USA Copyright by York International Corporation 1997 ALL RIGHTS RESERVED Form 150 40 NM25...

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