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York YCWJ45EE0 Installation Operation & Maintenance
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York YCWJ45EE0 Installation Operation & Maintenance

Recippak liquid chillers water cooled - reciprocating hermetic ,style a 50/60 hz
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26214A

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Summary of Contents for York YCWJ45EE0

  • Page 1 26214A...
  • Page 4 26124A 26125A...
  • Page 5 27299A 27599A...
  • Page 6 LD02344...
  • Page 7 LD02345 LD02346 CAUTION: Excessive flow will cause damage to the cooler. Do not exceed max. cooler GPM Special care should be taken when multiple chillers are fed by a single pump.
  • Page 9 LD02347...
  • Page 10 LD02348 MODEL (60HZ) YCWJ45EE0 10'–0-3/8" 6'–1-7/16" 2'–11" 2'–9-1/8" 4'–7-3/16" 8-1/4" 8-1/4" 3'–6-1/2" 7-5/8" 1'–7-3/4" 1'–3-1/2" 5" 6" 4'–11-11/16" YCWJ55HE0 10'–0-3/8" 6'–3-7/16" 2'–11" 2'–10-1/8" 4'–7-3/16" 8-1/4" 8-1/4" 3'–5-1/2" 9-5/8" 1'–7-3/4" 1'–3-1/8" 5" 8" 4'–11-11/16" YCWJ56HF0 10'–0-3/8" 6'–7-3/16" 2'–11" 2'–10-1/8" 4'–7-3/16" 8-1/4" 8-1/4"...
  • Page 11 LD02349...

  • Page 13: Control Power Supply

    CONTROL POWER SUPPLY MAX. NON-FUSE CONTROL MIN. UNIT DUAL- DISC. POWER CIRCUIT VOLTAGE ELEMENT SWITCH SUPPLY AMPACITY FUSE SIZE SIZE Standard Models 115-1-60 20A, 250V 30A, 240V Without Transformers...
  • Page 18 26124A(R)
  • Page 19 251 12A LD02350...
  • Page 21 LD02351...
  • Page 22 ÷...
  • Page 24 NOTE: The operating of hermetic compressors in a vacuum may damage the motor and cause it to fail immediately or within a short time. For this reason the compressor should never be oper- ated during the evacuation procedure.
  • Page 26 LD02352...
  • Page 28 Alarm circuitry, or pilot relays for condensor pump starters wired through motor contactor auxiliary contacts must be suppressed with YORK P/ N 031-00808-000 sup- pressor across the relay/ contactor coil. Any contacts connected to flow switch inputs or...
  • Page 29 CONTROL CIRCUIT (With I/O Expansion Board) LD02106...
  • Page 31 LD02678...
  • Page 32 LD02110...
  • Page 33 LD02357...
  • Page 34 LD02358...
  • Page 36 MICROPANEL CONNECTION DIAGRAM (With I/O Expansion Board) LD02107...
  • Page 38 26572A(D)
  • Page 39 φ 26126A...
  • Page 40 28697A 26216A...
  • Page 41 26572A(D)
  • Page 43 26001A LD01098...
  • Page 46 26572A(D)
  • Page 50 26572A(D)
  • Page 51 26572A(D) MAY CAUSE DAMAGE TO THE CHILLER OR OPERA- TION PROBLEMS. NOTE: In some water cooled condenser installations, the possibility exists for the condenser water pump or the cooling tower to not be in operation when the chiller starts. This causes the dis- charge pressure to rise so rapidly that even though the mechanical high pressure cut-out is shutting down the compressor, the flywheel ef-...
  • Page 52 NOTE: It is required to first key in “0” when program- ming this cut-out (Example: 0270 PSIG). NOTE: This cut-out does NOT apply to YCW & YCR indoor chillers. NOTE: It is required to first key in a “0” when program- ming this cut-out (Example: 0255 PSIG).
  • Page 53 NOTE: When programming values from 80-99 PSIG, it is required to first key in a “0”. Example: 085 PSIG. NOTE: When programming values from 80-99%, it is first required to key in a “0”. Example: 090%.
  • Page 54 NOTE: There are some exceptions, where suction pres- sure is permitted to temporarily drop below the cut-out point. Details are outlined in the SYS- TEM SAFETIES section. Standard Steps Steps Steps Steps Steps Steps Steps Steps Optional NOTE: Optional unloading is not available. Hot Gas Bypass (Loadminder) should not be counted for programming purposes.
  • Page 55 26572A(D) NOTE: The AM/PM key can only be pressed once. If an error is made, press the CANCEL key and begin again.
  • Page 56 NOTE: This will have no effect on the holiday schedule. NOTE: Only one start/stop time can be programmed which will apply to each of the “HOLIDAY” days selected.
  • Page 57 “THE FOLLOWING ARE PROGRAMMED” “RETURN WATER CONTROL” or “LEAVING WATER CONTROL”...
  • Page 58 In LWT CONTROL, water temperature may un- desirably rise when a compressor cycles off and cannot restart because the anti-recycle timer is still timing out. The effects can be reduced by programming the anti-recycle timer (Page 46) for a minimum of 300 seconds if it isn’t already programmed for 300 seconds.
  • Page 59 ∆ ∆ ∆ “RETURN WATER TEMP CONTROL”...
  • Page 60 NOTE: When programming values between 0.1° - 9.9°F, it is required to first key in a “0” or “00”. Ex- ample: 05.9 °F.
  • Page 61 NOTE: Too small of a RATE SENSITIVITY value se- lection may prevent loading due to varying flows or if the water system allows a slug of cold water to enter which falsely fools the micro into think- ing the RATE SENSITIVITY has been exceeded, preventing loading and allowing leaving water temperature to rise above the desired tempera- ture.
  • Page 62 CAUTION: Too small of a CR selection will cause com- pressor/loader cycling. If compressor cycling occurs, leaving water temperature may vary considerably as a result of a compressor that cannot restart due to the anti-recycle timer. To eliminate this, increase the ∆ T (tem- perature differential) of the CR and/or pro- gram the anti-recycle timer for a minimum of 300 seconds if it isn’t already programmed...
  • Page 63 NOTE: When programming values between 0.1-9.9°F, it is required to first key in a “0” or “00”. Exam- ple: 0.5°-9.9°F...
  • Page 64 NOTE: Too small of a RATE SENSITIVITY Selection may prevent loading due to varying flows or if the water system allows a slug of cold water to enter which falsely fools the micro into thinking the RATE SENSITIVITY has been exceeded, preventing loading and allowing leaving water temperature to rise above the desired tempera- ture.
  • Page 65 LD02092 LD02091...
  • Page 66 LD02359...
  • Page 67 NOTE: The micro controls loading and unloading re- sponses on a 10 step scale regardless of the number of stages present. Therefore, loading and unloading responses on 5 and 7 step chill- ers may appear delayed (time between steps increased) when missing steps are activated or de-activated by the micro, 5 STEP CONTROL IS STANDARD.
  • Page 68 NOTE: Do not confuse FLA and RLA. FLA (full load amps) is approximately 1.2 x RLA. RLA (run- ning load amps) specified on the motor name- plate, is typical current demand under rated op- erating conditions in a fully loaded system. There- fore, do not expect to see 100% FLA when the system is fully loaded.
  • Page 69 NOTE: A transient timer is built into software to assure that short term fluctuations in suction pressure due to fan cycling, loading, etc. do not cause nuisance trips on low suction pressure. After the system has pumped down and suction pressure reaches cut-out plus 5 PSIG, the tran- sient timer is readied for action.
  • Page 70 CAUTION: Before returning a locked out system to service, a thorough investigation of the cause of the fault should be made. Failure to re- pair the cause of the fault while manually allowing repetitive restarts may cause fur- ther expensive damage to the system. NOTE: This safety will only be operational if the chiller is equipped with an I/O Expansion Board.
  • Page 71 NOTE: This safety should not affect the operation of indoor YCW & YCR water cooled chillers. NOTE: This safety should not affect the operation of indoor YCW & YCR water cooled chillers. CAUTION: NEVER BYPASS A FLOW SWITCH. THIS WILL CAUSE DAMAGE TO THE CHILLER AND VOID ANY WARRANTIES.
  • Page 73 NOTE: Under some circumstances, a pumpdown may occur when a compressor is called to come on for cooling. If this occurs, the compressor will restart to provide cooling after the pumpdown is complete and the anti-recycle timer times out.
  • Page 74 26572A(D) YORK INTERNATIONAL CORPORATION RECIPROCATING WATER CHILLERS SYSTEM STATUS 8:45AM 4/17/98 SYS 1 COMPRESSOR RUNNING SYS 2 ANTI-COIN TIMER 13 SEC RETURN WATER TEMP 65.0 DEGF LEAVING WATER TEMP 54.0 DEGF LOW WATER CUTOUT 36.0 DEGF SETPOINT TEMP 45.0 DEGF OUTSIDE AIR TEMP 75.0 DEGF...
  • Page 75 YORK INTERNATIONAL CORPORATION YORK INTERNATIONAL CORPORATION YORK INTERNATIONAL CORPORATION RECIPROCATING WATER CHILLERS RECIPROCATING WATER CHILLERS RECIPROCATING WATER CHILLERS SYSTEM STATUS NUMBER 1 SYSTEM STATUS NUMBER 2 SYSTEM STATUS 8:48AM 4/17/98 8:47AM 4/17/98 8:47AM 4/17/98 SYS 1 STATUS: NO FAULTS SYS 1 STATUS:...
  • Page 76 NOTE: Some of the information that may be recovered (i.e. fan operation, discharge pressures, stages of loading, etc.) may not apply to the chiller. The micro is capable of operating these items and displaying information relating to them re- gardless of whether they are present on the chiller. NOTE: Depending upon the EPROM installed, the sequence of messages may vary.
  • Page 80 NOTE: The micro will attempt to control the Hot Gas, Solenoid Valve regardless of whether the option is installed. NOTE: The micro will attempt to control the Hot Gas Solenoid Valve regardless of whether the option is installed.
  • Page 81 (such as process duty or cooling other critical equipment) and the alarm circuit should fail to function, YORK will not be liable for damages. NOTE: This message will not appear if Anti-recycle or Anti-coincident timers are in effect and are be-...
  • Page 82 26000A 26001A LD02092...
  • Page 83 LD02093 26001A NOTE: ALL PROGRAMMED VALUES AND STORED DATA, OTHER THAN THE INTERNAL CLOCK TlME-KEEPlNG, WILL BE MAINTAINED IN MEMORY REGARDLESS OF WHETHER THE CLOCK IS ON OR OFF AND REGARDLESS OF THE LENGTH OF THE POWER FAILURE.
  • Page 84 NOTE: If a power failure should again occur, the above process will again need to be repeated to bring the chiller back on line.
  • Page 85 CAUTION: Two cautions should be observed when us- ing these functions. Observing these cau- tions will assure that undesirable operation does not result. 1. Terminals 13 & 17 contact should always be closed after or simultaneous with those on 13 & 16, when unloading of the lead system is desired.
  • Page 86 NOTE: Any inductive devices (contactor/relay coil) con- nected to these contacts must be suppressed LD02092 with YORK P/N 031-00808 supplied by others. Otherwise nuisance faults may occur. LD02501 NOTE: 6 cylinder compressors are equipped with 3 cylinder banks. Cylinders 3 & 4 are permanently loaded cylinders and have no unloading solenoids.
  • Page 87 φ φ φ CAUTION: Compressor lubrication circuit must be primed with 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 lubri- cation circuit.
  • Page 88 NOTE: It is IMPORTANT that all switches are properly programmed. Otherwise, undesirable operation will result.
  • Page 89 NOTE: The Operating Sequence described below relates to operation after power has been applied on a hot water start such as start-up commissioning or a hot water start at the beginning of the day. It also assumes that 10 steps of loading are avail- able and programmed.
  • Page 90 NOTE: The operating sequence described below relates to operation after power has been applied on a hot water start such as at start-up commission- ing or a hot water start at the beginning of the day. It also assumes that 10 steps of loading are available and programmed.
  • Page 93 1000 micron vacuum can not be ob- tained. Do not evacuate for long periods of time. LD02097 NOTE: Any inductive devices (contactor/relay coil) con- nected to these contacts must be suppressed with YORK P/N 031-00808-000 supplied by others. Otherwise, nuisance faults may occur.
  • Page 94 NOTE: The microprocessor will only activate the hot gas on the lead compressor.
  • Page 95 LD02099 NOTE: HOT GAS should not be considered as an addi- tional step of unloading when programming the number of steps of loading/unloading.
  • Page 96 YORK INTERNATIONAL CORPORATION RECIPROCATING WATER CHILLERS SYSTEM STATUS 8:45AM 6/3/98 SYS 1 COMPRESSOR RUNNING SYS 2 ANTI-COIN TIMER 13 SEC RETURN WATER TEMP 65.0 DEGF LEAVING WATER TEMP 54.0 DEGF LOW WATER CUTOUT 36.0 DEGF SETPOINT TEMP 45.0 DEGF OUTSIDE AIR TEMP 75.0 DEGF...
  • Page 97 LD02100...
  • Page 98 CAUTION: THE 0-10VDC INPUT SIGNAL WIRING MUST NOT BE EARTH GROUNDED! CAUTION: THE 4-20mA INPUT SIGNAL WIRING MUST NOT BE EARTH GROUNDED!
  • Page 99 LD02360 NOTE: The coil of the controls used for reset must be suppressed. Use YORK PIN 031-00808-000 sup- pressor. The Remote Setpoint Reset will not operate when a Remote Control Center Option is connected to the Micropanel. The Remote Control Center...
  • Page 100 Contact YORK Service Before Replacing Circuit Boards! Ω Contact YORK Service Before Replacing Circuit Boards or C.T.’s!
  • Page 101 NOTE: If external H.P. Cut-out Switch opens, a “Motor Current” Fault will result.
  • Page 102 ∆ ∆ NOTE: It is not unusual to find up to a +2°F difference between the display and a thermometer located in waterpiping.
  • Page 104 36USC380 P .O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA Copyright © by York International Corporation 1998 ALL RIGHTS RESERVED Form 150.24-NM27 (298) Supersedes: 150.24-NM27 (1295)

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