Page 2 - GENERAL SAFETY GUIDELINES; READ BEFORE PROCEEDING!
YORK INTERNATIONAL 2 GENERAL SAFETY GUIDELINES This equipment is a relatively complicated apparatus. During installation, opera-tion, maintenance or service, individuals may be exposed to certain components orconditions including, but not limited to: refrigerants, oils, materials under pressure,rota...
Page 3 - CHANGEABILITY OF THIS DOCUMENT
YORK INTERNATIONAL 3 FORM 150.62-NM1 CAUTION identifies a hazard which could lead to damage to the machine,damage to other equipment and/or environmental pollution. Usually aninstruction will be given, together with a brief explanation. NOTE is used to highlight additional information which may be h...
Page 4 - TABLE OF CONTENTS AND TABLES
YORK INTERNATIONAL 4 TABLE OF CONTENTS AND TABLES PAGE PRODUCT IDENTIFICATION NUMBER .......................................................... 7 REFRIGERANT FLOW DIAGRAM ................................................................... 9 SECTION 1 INSTALLATION .......................................
Page 5 - TABLES AND FIGURES; TABLES; CONDENSER FAN CONTROL USING OUTDOOR AMBIENT
YORK INTERNATIONAL 5 FORM 150.62-NM1 TABLES AND FIGURES PAGE TABLES 13 COOLER PRESSURE DROPS (METRIC) ............................................. 33 14 ETHYLENE GLYCOL CORRECTION FACTORS .................................. 33 15 PHYSICAL DATA (ENGLISH) .................................................
Page 6 - ENTERING & LEAVING CHILLED LIQUID TEMPERATURE; FIGURES; OPTIONAL SINGLE POINT POWER SUPPLY WIRING –
YORK INTERNATIONAL 6 TABLES/FIGURES PAGE TABLES 48 ENTERING & LEAVING CHILLED LIQUID TEMPERATURE SENSOR VALUES ............................................................................ 100 49 KEYPAD PIN ASSIGNMENT MATRIX ................................................. 103 50 TROUBLESHOOTING...
Page 7 - BASIC MODEL NUMBER
YORK INTERNATIONAL 7 FORM 150.62-NM1 PRODUCT IDENTIFICATION NUMBER (PIN) YCAL0080SC46xAA BASIC MODEL NUMBER : Standard Unit : Design Series A: Engineering Change or PIN Level : R-22 : 200 / 3/ 60: 230 / 3 / 60: 380 / 3 / 60: 460 / 3 / 60: 380-415 / 3 / 50: 575 / 3 / 60: Across the Line 1 2 3 4 5 6 7...
Page 8 - PRODUCT IDENTIFICA; OPTIONS MODEL NUMBER
YORK INTERNA TIONAL 8 PRODUCT IDENTIFICA TION NUMBER (PIN) EXAMPLES: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 XXXXXXXX L XXXXXXXXXXXXXXXXXAXXXXXXXXXXXXX S D TC A T S R L X P R S 2 5 C X 1 XXXX 3 D W S A R XBXX 4 BXX L X S...
Page 9 - REFRIGERANT FLOW DIAGRAM; FIG. 1 – REFRIGERANT FLOW DIAGRAM
YORK INTERNATIONAL 9 FORM 150.62-NM1 2 OR 3 COMPRESSORS PER SYSTEM OIL EQUALIZINGLINE AIR COOLED CONDENSERS DX COOLER LEAVING CHILLED WATER ENTERING CHILLED WATER SERVICE VALVE OPTIONAL DISCHARGEPRESSURE TRANSDUCER HIGH PRESSURECUTOUT SWITCH SERVICE VALVE LOW PRESSURE SWITCH OR SUCTION PRESSURE TRAN...
Page 10 - INSTALLATION CHECK LIST; Open the unit only to install water piping system. Do; HANDLING; INSTALLATION; INSPECTION; Installation
YORK INTERNATIONAL 10 29224(RIG)A To ensure warranty coverage, thisequipment must be commissioned andserviced by an authorized YORK ser-vice mechanic or a qualified serviceperson experienced in chiller instal-lation. Installation must comply withall applicable codes, particularly inregard to electri...
Page 12 - WIRING
YORK INTERNATIONAL 12 Hand stop valves should be installed in all lines to facili-tate servicing. Piping to the inlet and outlet connections of the chillershould include high-pressure rubber hose or piping loopsto insure against transmission of water pump vibration.The necessary components must be o...
Page 13 - Low Leaving Chilled Liquid Fault
YORK INTERNATIONAL 13 FORM 150.62-NM1 EVAPORATOR PUMP START CONTACTS Terminal block CTB2 - terminals 23 to 24, are normallyopen contacts that can be used to switch field suppliedpower to provide a start signal to the evaporator pumpcontactor. The contacts will be closed when any of thefollowing cond...
Page 14 - Control Panel; Power Panel; FIG. 2 – MULTI POINT POWER SUPPLY WIRING
YORK INTERNATIONAL 14 Control Panel *Circuit # 2 Circuit # 1 See electrical note 9 Power Panel Field 120-1-60 MicropanelPower Supply if controltransformer not supplied Micropanel Field Unit PowerSupply GRD 1L1 1L2 1L3 2L1 2L2 2L3 GRD 2L CTB2 13 14 CTB1 Flow Switch FIG. 2 – MULTI POINT POWER SUPPLY W...
Page 15 - FIG. 3 – OPTIONAL SINGLE POINT POWER SUPPLY WIRING
YORK INTERNATIONAL 15 FORM 150.62-NM1 Control Panel Power Panel Micropanel Field Unit Power Supply Field 120-1-60 MicropanelPower Supply if controltransformer not supplied See electrical note 9 1L1 1L2 1L3 GRD 13 14 CTB1 2 L CTB2 Flow Switch Electrical Notes and Legend located on Page 18 and 19. FIG...
Page 16 - FIG. 4 – OPTIONAL SINGLE POINT POWER WIRING; OPTIONAL SINGLE-POINT POWER SUPPLY WIRING
YORK INTERNATIONAL 16 Control Panel See electrical note 9 Power Panel Micropanel Field Unit PowerSupply 1L1 1L2 1L3 N-F DisconnectSw. OR MoldedCase CircuitBkr. Field 120-1-60 MicropanelPower Supply if controltransformer not supplied GRD CTB2 2 L 13 14 CTB1 Flow Switch Electrical Notes and Legend loc...
Page 17 - FIG. 5 – CONTROL WIRING; CONTROL WIRING
YORK INTERNATIONAL 17 FORM 150.62-NM1 CTB1 21 13 20 13 14 13 FLOW SW REMOTE START/STOP PWM INPUT LOAD LIMIT INPUT FIG. 5 – CONTROL WIRING CONTROL WIRING * * Factory wired with optional transformer. LD03611 LD03819 IT IS POSSIBLE THAT MULTIPLE SOURCES OF POWER CAN BE SUPPLYINGTHE UNIT POWER PANEL. TO...
Page 18 - Table 250-95. A control circuit grounding lug is also supplied.; ELECTRICAL NOTES
YORK INTERNATIONAL 18 NOTES: 1. Minimum Circuit Ampacity (MCA) is based on 125% of the rated load amps for the largest motor plus 100% of the rated load amps for all other loads included in the circuit, per N.E.C. Article 430-24. If the Factory MountedControl Transformer is provided, add the followi...
Page 19 - VOLTAGE CODE; LEGEND: Field Wiring; Factory Wiring
YORK INTERNATIONAL 19 FORM 150.62-NM1 VOLTAGE CODE -17 = 200-3-60-28 = 230-3-60-40 = 380-3-60-46 = 460-3-60-58 = 575-3-60 ELECTRICAL NOTES LEGENDACR-LINE ACROSS THE LINE START C.B. CIRCUIT BREAKER D.E. DUAL ELEMENT FUSE DISC SW DISCONNECT SWITCH FACT MOUNT CB FACTORY MOUNTED CIRCUIT BREAKER FLA FULL...
Page 20 - TABLE 1 – MICROPANEL POWER SUPPLY; ELECTRICAL DATA
YORK INTERNATIONAL 20 TABLE 1 – MICROPANEL POWER SUPPLY OVER CURRENT PROTECTION, UNIT VOLTAGE UNIT VOLTAGE CONTROL POWER MCA SEE NOTE B NF DISC Sw NOTE A MIN MAX MODELS w/o CONTROL TRANS 115-1-60/50 15A 10A 15A 30 A / 240V -17 200-1-60 15A 10A 15A 30 A / 240V -28 230-1-60 15A 10A 15A 30 A / 240V MOD...
Page 21 - ELECTRICAL DATA – STANDARD SINGLE POINT POWER; TABLE 2 – STANDARD SINGLE POINT POWER
YORK INTERNATIONAL 21 FORM 150.62-NM1 ELECTRICAL DATA – STANDARD SINGLE POINT POWER YCAL0014SC - YCAL0034SC TABLE 2 – STANDARD SINGLE POINT POWER SINGLE POINT FIELD SUPPLIED WIRING SYSTEM #1 COMPRESSOR & FAN MODEL INCOMING YCAL VOLT HZ MCA 1 MIN N/F D.E. FUSE CKT. BKR. 5 WIRE COMPR. #1 COMPR. #2...
Page 22 - ELECTRICAL DATA – STANDARD DUAL POINT POWER; TABLE 3 – STANDARD DUAL POINT POWER
YORK INTERNATIONAL 22 ELECTRICAL DATA – STANDARD DUAL POINT POWER YCAL0040SC - YCAL0080SC See notes and legend on pages 18 and 19. SYSTEM #1 FIELD SUPPLIED WIRING SYSTEM #1 COMPRESSOR & FAN MODEL INCOMING YCAL VOLT HZ MCA 1 MIN N/F D.E. FUSE CKT. BKR. 5 WIRE COMPR. #1 COMPR. #2 COMPR. #3 FANS DI...
Page 24 - ELECTRICAL DATA – OPTIONAL SINGLE POINT POWER; TABLE 4 – OPTIONAL SINGLE POINT POWER
YORK INTERNATIONAL 24 ELECTRICAL DATA – OPTIONAL SINGLE POINT POWER YCAL0014SC - YCAL0034SC TABLE 4 – OPTIONAL SINGLE POINT POWER SINGLE POINT FIELD SUPPLIED WIRING MODEL INCOMING WIRE RANGE 6 YCAL VOLT HZ MCA 1 MIN N/F D.E. FUSE CKT. BKR. 5 FACTORY SUPPLIED OPTIONAL DISC SW 2 MIN 3 MAX 4 MIN MAX DI...
Page 26 - TABLE 5 – OPTIONAL SINGLE POINT POWER
YORK INTERNATIONAL 26 ELECTRICAL DATA – OPTIONAL SINGLE POINT POWER YCAL0040SC - YCAL0060SC TABLE 5 – OPTIONAL SINGLE POINT POWER See notes and legend on pages 18 and 19. SINGLE POINT FIELD SUPPLIED WIRING MODEL INCOMING WIRE RANGE 6 YCAL VOLT HZ MCA 1 MIN N/F D.E. FUSE CKT. BKR. 5 FACTORY SUPPLIED ...
Page 28 - TABLE 6 – OPTIONAL SINGLE POINT POWER
YORK INTERNATIONAL 28 ELECTRICAL DATA – OPTIONAL SINGLE POINT POWER YCAL0064SC - YCAL0080SC Installation TABLE 6 – OPTIONAL SINGLE POINT POWER SINGLE POINT FIELD SUPPLIED WIRING MODEL INCOMING WIRE RANGE 6 YCAL VOLT HZ MCA 1 MIN N/F D.E. FUSE CKT. BKR. 5 FACTORY SUPPLIED OPTIONAL DISC SW 2 MIN 3 MAX...
Page 30 - TABLE 7 – TEMPERATURES AND FLOWS
YORK INTERNATIONAL 30 OPERATIONAL LIMITATIONS (ENGLISH) YCAL00 LEAVING WATER COOLER FLOW (GPM 3 ) AIR ON CONDENSER (°F) TEMPERATURE (°F ) MIN 1 MAX 2 MIN MAX MIN 4 MAX 5 14SC 40 55 30 60 25 125 20SC 40 55 30 60 25 125 24SC 40 55 35 70 25 125 30SC 40 55 45 75 25 125 34SC 40 55 75 110 25 125 40SC 40 5...
Page 31 - Cooler Pressure Drop; TABLE 9 – COOLER PRESSURE DROP CURVES; TABLE 10 – ETHYLENE GLYCOL CORRECTION; FACTORS
YORK INTERNATIONAL 31 FORM 150.62-NM1 OPERATIONAL LIMITATIONS (ENGLISH) 1 Cooler Pressure Drop YCAL0030 Flow, GPM 60.00 50.00 40.00 30.00 20.00 10.00 0.00 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Press . Drop , Ft. H 2 O LD04966 40.00 30.00 20.00 10.00 0.00 10 20 30 40 50 60 70 80 90 100 1...
Page 32 - TABLE 11 – TEMPERATURES AND FLOWS
YORK INTERNATIONAL 32 OPERATIONAL LIMITATIONS (METRIC) TABLE 11 – TEMPERATURES AND FLOWS YCAL00 LEAVING WATER COOLER FLOW (L/S) AIR ON CONDENSER (°C) TEMPERATURE (°C) MIN 1 MAX 2 MIN MAX MIN 4 MAX 5 14SC 4.4 12.8 1.9 3.8 -3.9 51.7 20SC 4.4 12.8 1.9 3.8 -3.9 51.7 24SC 4.4 12.8 2.2 4.4 -3.9 51.7 30SC ...
Page 33 - TABLE 13 – COOLER PRESSURE DROP CURVES
YORK INTERNATIONAL 33 FORM 150.62-NM1 OPERATIONAL LIMITATIONS (METRIC) TABLE 13 – COOLER PRESSURE DROP CURVES MODEL YCAL00 COOLER CURVE 14SC, 20SC, 24SC, A 30SC 34SC B 40SC, 44SC, 50SC, C 60SC 64SC, 70SC, 74SC, D 80SC E % WT FACTORS FREEZE ETHYLE- POINT NE TONS COMPR. DELTA GPM/ ° F/ ( ° C) GLYCOL k...
Page 39 - TABLE 17 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY; MODEL
YORK INTERNATIONAL 39 FORM 150.62-NM1 DIMENSIONS (ENGLISH) YCAL0014SC - YCAL0020SC TABLE 17 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY LD03847 MODEL WEIGHT DISTRIBUTION CENTER OF GRAVITY YCAL00 A B C D TOTAL X Y Z 14SC 587 525 587 525 2225 50.1 25.8 23.3 20SC 591 529 591 529 2241 50.2 25.9 23.2 1 1
Page 40 - * Refers to Model YCAL0030SC
YORK INTERNATIONAL 40 DIMENSIONS (ENGLISH) YCAL0024SC - YCAL0034SC Placement on a level surface of free of obstructions (including snow, for winter operation) or air circulation ensures ratedperformance, reliable operation, and ease of maintenance. Site restrictions may compromise minimum clearances...
Page 41 - TABLE 18 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY
YORK INTERNATIONAL 41 FORM 150.62-NM1 DIMENSIONS (ENGLISH) YCAL0024SC - YCAL0034SC TABLE 18 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY LD03845 MODEL WEIGHT DISTRIBUTION CENTER OF GRAVITY YCAL00 A B C D TOTAL X Y Z 24SC 636 581 636 581 2435 50.6 25.9 28.5 30SC 692 632 692 632 2647 50.6 25.8 28.9 34SC 86...
Page 43 - TABLE 19 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY
YORK INTERNATIONAL 43 FORM 150.62-NM1 DIMENSIONS (ENGLISH) YCAL0040SC - YCAL0060SC LD03849 TABLE 19 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY MODEL WEIGHT DISTRIBUTION CENTER OF GRAVITY YCAL00 A B C D TOTAL X Y Z 40SC 1110 1071 1110 1071 4363 58.6 40.3 28.9 44SC 1133 1098 1133 1098 4462 58.7 40.3 28.6...
Page 45 - TABLE 20 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY
YORK INTERNATIONAL 45 FORM 150.62-NM1 DIMENSIONS (ENGLISH) YCAL0064SC - YCAL0080SC TABLE 20 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY LD03851 MODEL WEIGHT DISTRIBUTION CENTER OF GRAVITY YCAL00 A B C D TOTAL X Y Z 64SC 1463 1288 1463 1288 5501 56.3 46.0 30.1 70SC 1492 1315 1492 1315 5616 56.3 45.6 30.1...
Page 47 - TABLE 21 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY
YORK INTERNATIONAL 47 FORM 150.62-NM1 DIMENSIONS (METRIC) YCAL0014SC - YCAL0020SC TABLE 21 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY LD03853 All dimensions in millimeters unless otherwise noted. MODEL WEIGHT DISTRIBUTION (kg) CENTER OF GRAVITY (mm) YCAL00 A B C D TOTAL X Y Z 14SC 266 238 266 238 1009 ...
Page 49 - TABLE 22 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY
YORK INTERNATIONAL 49 FORM 150.62-NM1 DIMENSIONS (METRIC) YCAL0024SC - YCAL0034SC TABLE 22 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY LD03855 All dimensions in millimeters unless otherwise noted. MODEL WEIGHT DISTRIBUTION CENTER OF GRAVITY YCAL00 A B C D TOTAL X Y Z 24SC 288 264 288 264 1104 1285 658 7...
Page 51 - TABLE 23 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY
YORK INTERNATIONAL 51 FORM 150.62-NM1 DIMENSIONS (METRIC) YCAL0040SC - YCAL0060SC TABLE 23 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY LD03857 All dimensions in millimeters unless otherwise noted. MODEL WEIGHT DISTRIBUTION CENTER OF GRAVITY YCAL00 A B C D TOTAL X Y Z 40SC 503 486 503 486 1979 1488 1024 ...
Page 53 - TABLE 24 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY
YORK INTERNATIONAL 53 FORM 150.62-NM1 DIMENSIONS (METRIC) YCAL0064SC - YCAL0080SC TABLE 24 – WEIGHT DISTRIBUTION/CENTER OF GRAVITY LD03859 All dimensions in millimeters unless otherwise noted. MODEL WEIGHT DISTRIBUTION CENTER OF GRAVITY YCAL00 A B C D TOTAL X Y Z 64SC 664 584 664 584 2495 1430 1168 ...
Page 54 - PRE-STARTUP CHECKLIST; Unit Checks
YORK INTERNATIONAL 54 PRE-STARTUP CHECKLIST G 8. Visually inspect wiring (power and control). Wir- ing MUST meet N.E.C. and local codes. See Fig-ures 2- 5, pages 14 - 17. G 9. Check tightness of power wiring inside the power panel on both sides of the motor contactors andoverloads. G 10. Check for p...
Page 55 - CHECKING SUPERHEAT AND SUBCOOLING
YORK INTERNATIONAL 55 FORM 150.62-NM1 G 3. Program/verify the Cooling Setpoints, Program Setpoints, and unit Options. Record the valuesbelow (see sections on Setpoints and Unit keysfor programming instruction). G 4. Put the unit into Service Mode (as described un- der the Control Service And Trouble...
Page 56 - LEAK CHECKING
YORK INTERNATIONAL 56 The subcooling temperature of each system can be cal-culated by recording the temperature of the liquid lineat the outlet of the condenser and subtracting it fromthe liquid line saturation temperature at the liquid stopvalve (liquid line saturation temp. is converted from atemp...
Page 57 - UNIT OPERATING SEQUENCE
YORK INTERNATIONAL 57 FORM 150.62-NM1 The operating sequence described below relates to op-eration on a hot water start after power has been ap-plied, such as start-up commissioning. When a com-pressor starts, internal timers limit the minimum timebefore another compressor can start to 1 minute. 1. ...
Page 58 - UNIT CONTROLS; INTRODUCTION; Unit Controls
YORK INTERNATIONAL 58 UNIT CONTROLS YORK MILLENNIUM CONTROL CENTER The YORK MicroComputer Control Center is a micro-processor based control system designed to provide theentire control for the liquid chiller. The control logic em-bedded in the microprocessor based control system willprovide control ...
Page 59 - UNIT SWITCH
YORK INTERNATIONAL 59 FORM 150.62-NM1 The Microprocessor Board energizes on-board relaysto output 120VAC to motor contactors, solenoid valves,etc. to control system operation. UNIT SWITCH A UNIT ON/OFF switch is just underneath the keypad.This switch allows the operator to turn the entire unitOFF if...
Page 60 - “STATUS” KEY; GENERAL STATUS MESSAGES
YORK INTERNATIONAL 60 “STATUS” KEY The following messages are displayed when the “Sta-tus” key is pressed. Following each displayed messageis an explanation pertaining to that particular display. GENERAL STATUS MESSAGES In the case of messages which apply to individual sys-tems, SYS 1 and, SYS 2 mes...
Page 62 - FAULT STATUS MESSAGES
YORK INTERNATIONAL 62 When this message appears, suction pressure limitingis in effect. Suction Pressure Limiting is only availableon units that have the suction pressure transducer in-stalled. If a low pressure switch is installed instead, suc-tion pressure limiting will not function. The suction p...
Page 63 - Discharge transducers must be in-; UNIT SAFETIES
YORK INTERNATIONAL 63 FORM 150.62-NM1 The Discharge Pressure Cutout is a software cutout inthe microprocessor and is backed-up by a mechanicalhigh pressure cutout switch located in the refrigerantcircuit. It assures that the system pressure does notexceed safe working limits. The system will shutdow...
Page 64 - UNIT WARNING; unit warning and
YORK INTERNATIONAL 64 Restart is allowed after the unit is fully powered againand the anti-recycle timers have finished counting down. UNIT WARNING The following message is not a unit safety and will notbe logged to the history buffer. It is a unit warning and will not auto-restart. Operator interve...
Page 65 - TABLE 26 – STATUS KEY MESSAGES
YORK INTERNATIONAL 65 FORM 150.62-NM1 STATUS KEY MESSAGES TABLE 26 – STATUS KEY MESSAGES STATUS KEY MESSAGES General Messages Fault Messages Unit Switch Off Shutdown Remote Controlled Shutdown Daily Schedule Shutdown Flow Switch/Rem Stop No Run Permissive System X Switch Off System X Comps Run Syste...
Page 66 - OPER DATA Key; L C H L T
YORK INTERNATIONAL 66 The Display/Print keys allow the user to retrieve sys-tem and unit information that is useful for monitoringchiller operation, diagnosing potential problems, trouble-shooting, and commissioning the chiller. System and unit information, unit options, setpoints, andscheduling can...
Page 67 - If the
YORK INTERNATIONAL 67 FORM 150.62-NM1 S Y S 1 S P = 7 2 . 1 P S I G D P = 2 2 7 . 0 P S I G These displays show suction and discharge pressuresfor systems 1 & 2. The discharge pressure transduceris optional on all models If the optional discharge transducer is not installed, the discharge pressu...
Page 68 - NONE – no remote control active. Remote monitoring
YORK INTERNATIONAL 68 E V A P P U M P I S O N E V A P H E A T E R I S O F F 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 Y S X L L S V I S O N H O T G A S S O L I S O F F S Y S X F A N S T A G E 3 This display indicates the status of t...
Page 69 - TABLE 27 – OPERATION DATA; Oper Data Key
YORK INTERNATIONAL 69 FORM 150.62-NM1 TABLE 27 – OPERATION DATA OPER DATA Quick Reference List The following table is a quick reference list for informa-tion available under the OPER DATA key. * Block of information repeats for each system Oper Data Key Leaving & Chilled Liquid Temps Ambient Air...
Page 70 - PRINT Key; OPERATING DATA PRINTOUT
YORK INTERNATIONAL 70 PRINT Key The PRINT key allows the operator to obtain a printoutof real-time system operating data or a printout of sys-tem data at the “instant of the fault” on the last six faultswhich occurred on the unit. An optional printer is re-quired for the printout. See Service And Tr...
Page 71 - HISTORY PRINTOUT; YORK INTERNATIONAL CORPORATION; HISTORY DISPLAYS
YORK INTERNATIONAL 71 FORM 150.62-NM1 HISTORY PRINTOUT Pressing the PRINT key and then the HISTORY keyallows the operator to obtain a printout of informationrelating to the last 6 Safety Shutdowns which occurred.The information is stored at the instant of the fault, re-gardless of whether the fault ...
Page 73 - UP AND DOWN ARROW KEYS; “ENTRY” KEYS
YORK INTERNATIONAL 73 FORM 150.62-NM1 The Entry Keys allows the user to view, change pro-grammed values. The ENTRY keys consist of an UPARROW key, DOWN ARROW key, and an ENTER/ADVkey. UP AND DOWN ARROW KEYS Used in conjunction with the OPER DATA and HISTORYkeys, the UP and DOWN arrow keys allow the ...
Page 74 - COOLING SETPOINTS; “SETPOINTS” KEYS
YORK INTERNATIONAL 74 be displayed for a few seconds, and then the setpointentry screen will be displayed. Following are the four possible messages that can bedisplayed after pressing the COOLING SETPOINT key,indicating the cooling mode: This message indicates that the cooling setpoint is un-der LOC...
Page 75 - Notice that the RANGE was programmed for
YORK INTERNATIONAL 75 FORM 150.62-NM1 After using the UP and DOWN arrows to adjust to thedesired setpoint, the ENTER/ADV key must be pressedto enter this number into memory and advance to theRANGE SETPOINT. This will be indicated by the cursor moving under thecurrent RANGE setpoint. The UP and DOWN ...
Page 76 - TABLE 28 – COOLING SETPOINTS PROGRAMMABLE LIMITS AND DEFAULTS; SETPOINT KEY; reset
YORK INTERNATIONAL 76 Pressing the COOLING SETPOINTS key a second timewill display the remote setpoint and cooling range. Thisdisplay automatically updates about every 2 seconds.Notice that these setpoints are not “locally” program-mable, but are controlled by a remote device such asan ISN control. ...
Page 77 - SCHEDULE/ADVANCE DAY key; To page to a specific day press the SCHEDULE/
YORK INTERNATIONAL 77 FORM 150.62-NM1 SCHEDULE/ADVANCE DAY key The SCHEDULE is a seven day daily schedule that al-lows one start/stop time per day. The schedule can beprogrammed Monday through Sunday with an alternateholiday schedule available. If no start/stop times are pro-grammed, the unit will r...
Page 78 - PROGRAM key; optional discharge transducer. This is a
YORK INTERNATIONAL 78 PROGRAM key There are six operating parameters under the PRO-GRAM key that are programmable. These setpoints canbe changed by pressing the PROGRAM key, and thenthe ENTER/ADV key to enter Program Mode. Continu- ing to press the ENTER/ADV key will display each op-erating paramete...
Page 79 - TABLE 29 – PROGRAM KEY LIMITS AND DEFAULTS; PROGRAM VALUE
YORK INTERNATIONAL 79 FORM 150.62-NM1 Another anti-recycle timer is started each time the sys-tems number one compressor cycles off. This anti-re-cycle time is fixed at 120 seconds and starts to count-down when the systems number one compressor cyclesoff. The anti-recycle message is displayed when t...
Page 80 - TABLE 30 – SETPOINTS QUICK REFERENCE LIST
YORK INTERNATIONAL 80 TABLE 30 – SETPOINTS QUICK REFERENCE LIST Table 30 provides a quick reference of the setpoints listfor the Setpoints Keys. Cooling Setpoints Key Schedule/ Program Mode (press key to adv.) Advance Day Key (press enter to adv.) Local Leaving Mon. – Sun. Discharge Water Temp Contr...
Page 81 - “UNIT” KEYS; OPTIONS key
YORK INTERNATIONAL 81 FORM 150.62-NM1 “UNIT” KEYS OPTIONS key There are eleven programmable options (nine for unitswith a single refrigerant system) under the OPTIONSkey. The OPTIONS key is used to scroll through the listof options by repeatedly pressing the OPTIONS key .After the selected option ha...
Page 83 - CLOCK
YORK INTERNATIONAL 83 FORM 150.62-NM1 Condenser fans are controlled by ambient tem pera- t ure and discharge pressure. This mode must be cho- sen if the discharge pressure transducers are not in-stalled, or if the fan cycling is a concern. Option 11 – Manual Override Mode T his option allows overrid...
Page 84 - TABLE 31 – UNIT KEYS PROGRAMMING QUICK REFERENCE LIST; Options Key
YORK INTERNATIONAL 84 TABLE 31 – UNIT KEYS PROGRAMMING QUICK REFERENCE LIST Table 31 provides a quick reference list for the Unit keysetpoints. Options Key Clock (press key to adv.) Display Language Day – Time – Date System Switches on/off Unit Type (Chiller or Condensing Unit) Chilled Liquid Type (...
Page 85 - CAPACITY CONTROL; UNIT OPERATION
YORK INTERNATIONAL 85 FORM 150.62-NM1 CAPACITY CONTROL To initiate the start sequence of the chiller, all run per-missive inputs must be satisfied (flow/remote start/stopswitch), and no chiller or system faults exist. The first phase of the start sequence is initiated by theDaily Schedule Start or a...
Page 86 - FIG. 6 – LEAVING WATER TEMPERATURE CONTROL; LWT; LEAD SYSTEM
YORK INTERNATIONAL 86 FIG. 6 – LEAVING WATER TEMPERATURE CONTROL TABLE 32 – LEAVING CHILLED LIQUID CONTROL FOR 6 COMPRESSORS (8 STEPS) TABLE 33 – LEAVING CHILLED LIQUID CONTROL FOR 4 COMPRESSORS (6 STEPS) 20 sec. 30 sec. 60 sec. control range 60 sec. unloading unloading unloading (no compressor stag...
Page 89 - Compressor Staging for Return Water Control –; TABLE 38 – RETURN CHILLED LIQUID CONTROL FOR 4 COMPRESSORS (6 STEPS); TABLE 37 – RETURN CHILLED LIQUID CONTROL FOR 6 COMPRESSORS (8 STEPS); COMPRESSOR ON POINT; TABLE 36 – COMPRESSOR STAGING FOR RETURN WATER CONTROL
YORK INTERNATIONAL 89 FORM 150.62-NM1 Compressor Staging for Return Water Control – 6 Compressors Cooling Setpoint = 45° F (7.2° C) Range = 10° F (5.6° C) Notes: 1. Step 1 is Hot Gas Bypass and is skipped when loading occurs. Hot Gas Bypass operation is inhibited during Pumpdown. 2. Step 3 is skippe...
Page 90 - EVAPORATOR PUMP CONTROL; the heater is turned; CONDENSER FAN CONTROL
YORK INTERNATIONAL 90 EVAPORATOR PUMP CONTROL The evaporator pump dry contacts (CTB2 - terminals23 - 24) are energized when any of the following condi-tions are true: 1. Low Leaving Chilled Liquid Fault2. Any compressor is running3. Daily Schedule is not programmed OFF and Unit Switch is ON. The pum...
Page 91 - LOW AMBIENT CONDENSER FAN CONTROL; PRESSURE CONTROL
YORK INTERNATIONAL 91 FORM 150.62-NM1 LOW AMBIENT CONDENSER FAN CONTROL For unit operation below 25°F (-3.9°C) a low ambientkit is required. The kit consists of a discharge pressuretransducer(s) and reversing contactors. With the low ambient kit installed and the unit pro-grammed for low ambient ope...
Page 92 - LOAD LIMITING; NOTE: Simultaneous operation of Load Limiting and; ALARM STATUS; COMPRESSORS IN UNIT
YORK INTERNATIONAL 92 PUMPDOWN (LLSV) CONTROL Each system has a Pumpdown feature upon shut-off.On a non-safety, non-unit switch shutdown, all compres-sors but one in the system will be shut off. The LLSVwill also be turned off. The final compressor will be al-lowed to run until the suction pressure ...
Page 93 - EMS-PWM REMOTE TEMPERATURE RESET; setpoint = local chilled liquid setpoint + °reset
YORK INTERNATIONAL 93 FORM 150.62-NM1 EMS-PWM REMOTE TEMPERATURE RESET EMS-PWM Remote Temperature Reset is a value thatresets the Chilled Liquid Setpoint based on a PWM in-put (timed contact closure) to the microboard. This PWMinput would typically be supplied by an Energy Man-agement System. A cont...
Page 94 - FIG. 7 – FIELD AND FACTORY ELECTRICAL CONNECTIONS; OPTIONAL REMOTE TEMPERATURE RESET BOARD
YORK INTERNATIONAL 94 FIG. 7 – FIELD AND FACTORY ELECTRICAL CONNECTIONS OPTIONAL REMOTE TEMPERATURE RESET BOARD If a 4-20mA signal is available, it is applied to termi-nals A+ and A- and jumpers are applied to JU5 andJU3 on the reset board. The mA signal is conditioned toa 1-11 second PWM output. Th...
Page 95 - SERVICE AND TROUBLESHOOTING; CLEARING HISTORY BUFFERS
YORK INTERNATIONAL 95 FORM 150.62-NM1 SERVICE AND TROUBLESHOOTING CLEARING HISTORY BUFFERS The history buffers may be cleared by pressing the HIS-TORY key and then repeatedly pressing the UP arrowkey until you scroll past the last history buffer choice.The following message will be displayed: Pressi...
Page 96 - SERVICE MODE - INPUTS; After entering the Service Mode,; CONTROL INPUTS/OUTPUTS; Service and Troubleshooting
YORK INTERNATIONAL 96 SERVICE MODE - INPUTS After entering the Service Mode, all digital and analog inputs to the microboard can be viewed by pressing theOPER DATA key. After pressing the OPER DATA key,the UP ARROW and DOWN ARROW keys are used toscroll through the analog and digital inputs. Followin...
Page 97 - TABLE 46 – MICROBOARD OUTPUTS; TB4-10 EVAPORATOR HEATER; TABLE 44 – MICROBOARD BINARY INPUTS; J4-10 Sys 1 Suction Press Transducer or; Sys 1 Low Press Switch; J5-12 Sys 1 Suction Temp Sensor - YCUL Option
YORK INTERNATIONAL 97 FORM 150.62-NM1 * The 30 dc unregulated supply is not an input. This voltage originates on the microboard and is used to supply the contacts for the binaryinputs. TABLE 46 – MICROBOARD OUTPUTS TB3-2 SYSTEM 1 COMPRESSOR 1 TB3-3 SYS 1 LIQUID LINE SOLENOID VALVE TB3-4 SYSTEM 1 COM...
Page 98 - FIG. 8 – MICROBOARD LAYOUT
YORK INTERNATIONAL 98 FIG. 8 – MICROBOARD LAYOUT J4 J8 J6 J5 J7 J9 TB3 TB4 TB5 00071VIP TB1 TB2 Service and Troubleshooting CLOCK ON/OFF JUMPER
Page 99 - TEMP °F
YORK INTERNATIONAL 99 FORM 150.62-NM1 CHECKING INPUTS AND OUTPUTS BINARY INPUTS Refer to the unit wiring diagram. All binary inputs areconnected to J9 of the microboard. The term “binary”refers to two states –- either on or off. As an example,when the flow switch is closed, 30 volts dc will be ap- p...
Page 100 - TABLE 48 – ENTERING AND LEAVING CHILLED
YORK INTERNATIONAL 100 Entering Chilled Liquid Sensor J6-6 = +5VDC regulated supply to sensor.J6-9 = VDC input signal to the microboard. See Table 48 for voltage readings that correspond to specific liquid temperatures. J6-3 = drain (shield connection = 0VDC) Leaving Chilled Liquid Temp. Sensor J6-5...
Page 101 - ANALOG INPUTS – Pressure; System 1 Discharge Transducer
YORK INTERNATIONAL 101 FORM 150.62-NM1 ANALOG INPUTS – Pressure Refer to the unit wiring diagram. Pressure inputs areconnected to the microboard on plugs J4 and J7. Theseanalog inputs represent varying dc signals correspond-ing to varying pressures. All voltages are in referenceto the unit case (gro...
Page 102 - DIGITAL OUTPUTS
YORK INTERNATIONAL 102 The suction transducers have a range from 0 to 200PSIG (13.79 BARG). The output will be linear from .5VDC to 4.5 VDC over the 200 PSIG (13.79 BARG)range. Following is a formula that can be used to verifythe voltage output of the transducer. All voltage readingare in reference ...
Page 103 - ARCHITECTURE; TABLE 49 – KEYPAD PIN ASSIGNMENT MATRIX; KEYPAD
YORK INTERNATIONAL 103 FORM 150.62-NM1 KEYPAD The operator keypad is connected to the microboardby a ribbon cable, which is connected to J2 on the mi-croboard. The integrity of a specific “button” on the keypad can beverified by doing a continuity check across two specific . FIG. 9 – MICROBOARD RELA...
Page 104 - Parts; The following parts are required:; Assembly and Wiring; OPTIONAL PRINTER INSTALLATION
YORK INTERNATIONAL 104 The micro panel is capable of supplying a printout ofchiller conditions or fault shutdown information at anygiven time. This allows operator and service personnelto obtain data and system status with the touch of thekeypad. In addition to manual print selection, the micropanel...
Page 105 - TROUBLESHOOTING
YORK INTERNATIONAL 105 FORM 150.62-NM1 TROUBLESHOOTING PROBLEM CAUSE SOLUTION No display on panel. 1. No 115VAC to 1T. 1a. Check wiring and fuse Unit will not operate. 3FU b. Check wiring emergency stop contacts 5 to L of CTB2Terminal Block. c. Replace 1T 2. No 24VAC to Microboard 2. Check wiring 1T...
Page 107 - PROBLEM
YORK INTERNATIONAL 107 FORM 150.62-NM1 PROBLEM CAUSE SOLUTION “MP / HPCO” FAULT 1. Compressor internal motor 1. Verify refrigerant charge is protector (MP) open. not low. Verify superheatsetting of ° 10 - 15 ° F (5.6 ° - 8. 3°C). Verify correct com-pressor rotation. Verifycompressor is not overloade...
Page 108 - MAINTENANCE
YORK INTERNATIONAL 108 MAINTENANCE It is the responsibility of the equipment owner to pro-vide maintenance on the system. IMPORTANT If system failure occurs due to improper maintenanceduring the warranty period, YORK will not be liable forcosts incurred to return the system to satisfactory op-eratio...
Page 109 - TRANSMITTED DATA; ISN CONTROL; TABLE 51 – ISN RECEIVED DATA; ISN PAGE
YORK INTERNATIONAL 109 FORM 150.62-NM1 RECEIVED DATA (CONTROL DATA) The Middle Market receives 8 data values from the ISN.The first 4 are analog values and the last 4 are digitalvalues. These 8 data values are used as control pa-rameters when in REMOTE mode. When the unit is inLOCAL mode, these 8 va...
Page 110 - TABLE 53 – ISN TRANSMITTED DATA
YORK INTERNATIONAL 110 Service and Troubleshooting * The operational and fault codes sent to pages 56 through 59 are defined in Table 54. Note that this table of fault and op codes is for allDX products. The codes that are grayed out are not used on this unit. TABLE 53 – ISN TRANSMITTED DATA ISN PAG...
Page 111 - TABLE 54 – ISN OPERATIONAL AND FAULT CODES; OPERATIONAL CODE
YORK INTERNATIONAL 111 FORM 150.62-NM1 TABLE 54 – ISN OPERATIONAL AND FAULT CODES P56/58 OPERATIONAL CODE P57/59 FAULT CODE 0 NO ABNORMAL CONDITION 0 NO FAULT 1 UNIT SWITCH OFF 1 VAC UNDERVOLTAGE 2 SYSTEM SWITCH OFF 2 LOW AMBIENT TEMPERATURE 3 LOCK-OUT 3 HIGH AMBIENT TEMPERATURE 4 UNIT FAULT 4 LOW L...
Page 112 - ELEMENTARY DIAGRAM; FIG. 11 – ELEMENTARY DIAGRAM; Wiring Diagrams
YORK INTERNATIONAL 112 ELEMENTARY DIAGRAM YCAL0014SC – YCAL0030SC FIG. 11 – ELEMENTARY DIAGRAM Wiring Diagrams
Page 114 - FIG. 12 – ELEMENTARY DIAGRAM
YORK INTERNATIONAL 114 ELEMENTARY DIAGRAM YCAL0014SC – YCAL0030SC LD03532 FIG. 12 – ELEMENTARY DIAGRAM Wiring Diagrams
Page 115 - This page intentionally left blank.
YORK INTERNATIONAL 115 FORM 150.62-NM1 This page intentionally left blank. 4
Page 116 - FIG. 13 – ELEMENTARY DIAGRAM
YORK INTERNATIONAL 116 ELEMENTARY DIAGRAM YCAL0034SC FIG. 13 – ELEMENTARY DIAGRAM Wiring Diagrams
Page 118 - FIG. 14 – ELEMENTARY DIAGRAM
YORK INTERNATIONAL 118 FIG. 14 – ELEMENTARY DIAGRAM ELEMENTARY DIAGRAM YCAL0034SC LD03534 Wiring Diagrams
Page 120 - FIG. 15 – ELEMENTARY DIAGRAM
YORK INTERNATIONAL 120 ELEMENTARY DIAGRAM YCAL0040SC – YCAL0060SC FIG. 15 – ELEMENTARY DIAGRAM Wiring Diagrams
Page 122 - FIG. 16 – ELEMENTARY DIAGRAM
YORK INTERNATIONAL 122 ELEMENTARY DIAGRAM YCAL0040SC – YCAL0060SC FIG. 16 – ELEMENTARY DIAGRAM Wiring Diagrams
Page 124 - FIG. 17 – ELEMENTARY DIAGRAM
YORK INTERNATIONAL 124 ELEMENTARY DIAGRAM YCAL0064SC – YCAL0080SC FIG. 17 – ELEMENTARY DIAGRAM Wiring Diagrams
Page 126 - FIG. 18 – ELEMENTARY DIAGRAM
YORK INTERNATIONAL 126 ELEMENTARY DIAGRAM YCAL0064SC – YCAL0080SC FIG. 18 – ELEMENTARY DIAGRAM Wiring Diagrams
Page 128 - ISOLATOR SPRING IDENTIFICATION TABLE; APPENDIX 1; Appendix 1 – Isolators
YORK INTERNATIONAL 128 ISOLATOR SPRING IDENTIFICATION TABLE 1" DEFLECTION SEISMIC MODEL PART- # COLOR MODEL PART # COLOR CP-1-27 308439-27 ORANGE AEQM-97 301055-97 WHITE CP-1-28 308439-28 GREEN AEQM-98 301055-98 GRAY CP-1-31 308439-31 GRAY AEQM-1300 301060-1300 YELLOW CP-1-27 308692-27 ORANGE AE...
Page 131 - FIG. 21 – R SPRING SEISMIC ISOLATORS
APPENDIX 1 (DIMENSIONS) MODEL # A B C D E F G H J AEQM-97 7 5-½ 4-½ 2-½ A ! 7- ! A @ AEQM-98 7 5-½ 4-½ 2-½ A ! 7- ! A @ AEQM-99 7 5-½ 4-½ 2-½ A ! 7- ! A @ AEQM-1000 8-½ 6-½ 6 4-½ ¾ @ 8- @ B ½ AEQM-1300 8-½ 6-½ 6 4-½ ¾ @ 8- @ B ½ AEQM-1600 8-½ 6-½ 6 4-½ ¾ @ 8- @ B ½ AEQM-1625 8-½ 6-½ 6 4-½ ¾ @ 8- @ B...
Page 132 - INSTALLATION AND ADJUSTING INSTALLATIONS; FIG. 22 – TYPE CP MOUNTING
YORK INTERNATIONAL 132 INSTALLATION AND ADJUSTING INSTALLATIONS TYPE CP MOUNTING APPENDIX 1 Mountings are shipped completely assembled, readyto install. 1. Locate mountings under equipment at positions shown on tags or on VM layout drawings, or as indi-cated on packing slip or correspondence. 2. Set...
Page 133 - “AEQM” SPRING-FLEX MOUNTING
YORK INTERNATIONAL 133 FORM 150.62-NM1 “AEQM” SPRING-FLEX MOUNTING INSTALLATION AND ADJUSTMENT INSTRUCTIONS APPENDIX 1 1. Isolators are shipped fully assembled and are to be spaced and located in accordance with installationdrawings or as otherwise recommended. 1a. Locate spring port facing outward ...
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