York MILLENNIUM YCAR0315 Installation Operation & Maintenance
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York MILLENNIUM YCAR0315 Installation Operation & Maintenance

York MILLENNIUM YCAR0315 Installation Operation & Maintenance

Air-cooled reciprocating liquid chillers
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MILLENNIUM
®
AIR-COOLED RECIPROCATING
LIQUID CHILLERS
New Release
INSTALLATION, OPERATION, MAINTENANCE
Form 150.52-NM2 (1001)
®
MILLENNIUM
AIR-COOLED RECIPROCATING LIQUID CHILLERS
28971AR
YCAR0315 – YCAR0685 MODELS
50 HZ
STYLE A
90 - 225 TONS
(315 - 685 kW)
EPROM
031-02013-001

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  • Page 1 MILLENNIUM ® AIR-COOLED RECIPROCATING LIQUID CHILLERS New Release INSTALLATION, OPERATION, MAINTENANCE Form 150.52-NM2 (1001) ® MILLENNIUM AIR-COOLED RECIPROCATING LIQUID CHILLERS 28971AR YCAR0315 – YCAR0685 MODELS 50 HZ STYLE A 90 - 225 TONS (315 - 685 kW) EPROM 031-02013-001...

  • Page 2: Table Of Contents

    Pipework Connection ..........................30 Water Treatment ............................ 31 Pipework Arrangement .......................... 32 Connection Types and Sizes ......................... 32 Cooler Connections ..........................32 Refrigerant Relief Valve Piping ......................32 Ductwork Connection ..........................33 Electrical Connection ..........................33 Power Wiring ............................33 YORK INTERNATIONAL...
  • Page 3 Program and Setup Keys ....................... 102 1. INTRODUCTION and PHYSICAL DESCRIPTION ................ 103 General ..........................103 Keypad and Display ......................103 Unit (Chiller) ON / OFF Switch ....................103 Microprocessor Board ......................103 Ancillary Circuit Boards ......................104 YORK INTERNATIONAL...
  • Page 4 Remote Cooling Setpoints Key ..................... 135 Chilled Liquid Temperature Control ..................135 Compressor Capacity Loading Sequence ................136 “Fuzzy Logic” “Loading” Anticipatory Control ............... 137 “Load Limiting” Anticipatory Control ..................137 Compressor Unloading and Shutdown Sequence ............... 137 YORK INTERNATIONAL...
  • Page 5 Scheduled Maintenance ......................... 150 Chiller/Compressor Operating Log ....................151 Maintenance Requirements ......................152 Maintenance Requirements for YORK J,K and P Reciprocating Compressors ......153 General Periodic Maintenance Checks – Standard Units ............. 154 SPARE PARTS ............................ 155 Recommended Spares ........................155 Recommended Compressor Oils ....................

  • Page 6: General Safety Guidelines

    YORK INTERNATIONAL...

  • Page 7: Safety Symbols

    NOT be installed inside the micro panel. NO external wiring is allowed to be run through the micro panel. All wiring must be in accordance with YORK’s published specifications and must be performed ONLY by qualified YORK personnel. YORK will not be responsible for damages/problems resulting from improper connections to the controls or application of improper control signals.

  • Page 8: Section 1 General Chiller Information And Safety

    Center. See Commissioning, page 42. types of air conditioning installations. • Only genuine YORK-approved spare parts, oils and The unit is intended for cooling water or glycol solu- refrigerants must be used. Recommendations on tions and is not suitable for purposes other than those spare parts can be found on page 155.

  • Page 9: About This Manual

    This manual, and any other document supplied with the personnel. unit, are the property of YORK, which reserves all rights. They may not be reproduced, in whole or in part, with- Electrical out prior written authorization from an authorized YORK representative.

  • Page 10: Emergency Shutdown

    CB2 (System 2) can also be used to stop the respective system in an emergency. When operated, each removes the electrical supply from the control system, thus shut- ting down the unit. YORK INTERNATIONAL...

  • Page 11: Material Safety Data

    Fire Extinguishing Data Non-flammable. Containers Fire exposed containers should be kept cool with water sprays. Containers may burst if overheated. Fire Fighting Self-contained breathing apparatus and protective clothing must be worn in fire conditions. Protective Equip. YORK INTERNATIONAL...
  • Page 12 General Chiller Information and Safety FORM 150.52-NM2 (1001) MATERIAL SAFETY DATA Section 1 – PRODUCT NAME AND INFORMATION Product (Trade Name and Synonyms): YORK “C” Oil Chemical Name: Semi-Synthetic Hydrocarbons Chemical Family: Mineral Oil Formula: Proprietary CAS#: Proprietary Section 2 – COMPONENTS AND HAZARD STATEMENT This product is non-hazardous.
  • Page 13 The information in this material safety data sheet should be provided to all who use, handle, store, transport, or are otherwise exposed to this product. YORK believes the information in this document to be reliable and up to date as of the date of publication, but makes no guarantee that it is.
  • Page 14 General Chiller Information and Safety FORM 150.52-NM2 (1001) MATERIAL SAFETY DATA REFRIGERANT OIL DATA: SAFETY DATA YORK “E” OIL Classification Non-hazardous. Irritant - may aggravate any existing skin disorders. Wash hands and any other contacted skin with In Contact With Skin soap and water after handling.

  • Page 15: Section 2 Product Description

    Design is in accordance with applicable sections of INTRODUCTION ASME Pressure Vessel Code, NFPA 70 (National Elec- YORK Millennium YCAR chillers are complete fac- trical Code), U.L. and cU.L. Standards, and ASHRAE/ tory-packaged units designed for water or water-glycol ANSI-15 Safety Code for Mechanical Refrigeration.

  • Page 16: Evaporator (Cooler)

    A magnetic plug is included terminal boxes are raintight. Starting is by either part- in the oil stream. YORK “C” Oil is used for standard winding or across the line. R-22 applications; YORK “E” Oil is used for high am- bient (>40.6°C [105°F]) R-22 applications.

  • Page 17: Condenser

    • Automatic reset after power failure and control panels are housed in NEMA 3R/12 (IP55) rain/dust tight, powder painted steel cabinets with hinged, • Automatic system optimization to match operating latched and gasket sealed outer doors equipped with conditions YORK INTERNATIONAL...

  • Page 18: Motor Current Protection

    Since the micro is sending a run signal to the contactor, it senses the low motor current below 10% FLA and shuts the system down. YORK INTERNATIONAL...

  • Page 19: Current Overload

    “Operating Current.” A current imbalance exceeding an unloaded It is recommended that a YORK Ser- level of 25% will result in the motor pilot circuit being vice Technician or the YORK factory de-energized.

  • Page 20: Table 1 - Motor Protector Dip Switch Settings

    SYS. 2 10110000 YCAR0485 11011101 SYS. 1 AND 2 YCAR0525 SYS. 1 01111110 SYS. 2 11011101 YCAR0575 01111110 SYS. 1 AND 2 YCAR0645 SYS. 1 10011001 SYS. 2 01111110 YCAR0685 10011001 SYS. 1 AND 2 * “1” = ON YORK INTERNATIONAL...
  • Page 21 SYS. 2 01011000 YCAR0485 SYS. 1 and 2 01101110 YCAR0525 SYS. 1 01111110 SYS. 2 01101110 YCAR0575 SYS. 1 and 2 01111110 YCAR0645 SYS. 1 10011001 SYS. 2 01111110 YCAR0685 SYS. 1 and 2 10011001 * “1” = ON YORK INTERNATIONAL...

  • Page 22: Keypad Controls

    English (°F and PSIG) and for each circuit, the fol- rent unload point, liquid temperature setpoint re- lowing items can be displayed: set signal from YORK ISN or building automa- tion system (by others), via: • Return and leaving chilled liquid, and ambient tem- •...

  • Page 23: Part-Wind Compressor Start

    FORM 150.52-NM2 (1001) 14 of N.E.C., to isolate unit power supply for ser- • A YORK ISN Building Automation System can vice). Factory wiring is provided from the Termi- provide a Pulse Width Modulated (PWM) signal nal Block or Disconnect Switch to factory supplied...

  • Page 24: Unit Enclosure Options

    Unrestricted airflow is per- Standard water chilling application range is 4°C to 13°C mitted through generously sized louvered openings. (40°F to 55°F) Leaving Chilled Water Temperature. To (Factory-mounted) YORK INTERNATIONAL...

  • Page 25: Unit Nomenclature Nameplate Engineering Data

    11 12 13 14 15 BASE PRODUCT TYPE NOMINAL CAPACITY UNIT DESIGNATOR REFRIGERANT VOLTAGE/STARTER DESIGN/DEVELOPMENT LEVEL : 380-415/3/50 : YORK : Standard Unit : R-407C : Design Series A : Chiller : R-22 : Engineering Change : Air-Cooled or PIN Level...
  • Page 26 Product Description FORM 150.52-NM2 (1001) UNIT NOMENCLATURE NAMEPLATE ENGINEERING DATA (CONTINUED) YORK INTERNATIONAL...

  • Page 27: Section 3 Handling And Storage

    If the unit is to be put into storage, prior to installation, Major damage must be reported immediately to your the following precautions should be observed: local YORK representative. MOVING THE CHILLER • Unit must be “blocked” so that the base is not permitted to sag or bow.

  • Page 28: Fig. 3 - Unit Rigging

    Handling and Storage FORM 150.52-NM2 (1001) 88" (2250mm) ☺ CORRECT! WRONG! LD03514 FIG. 3 – UNIT RIGGING WRONG! CORRECT! LD03515 FIG. 4 – LIFTING LUGS YORK INTERNATIONAL...

  • Page 29: Section 4 Installation

    Mounting holes16 mm affect unit performance. YORK INTERNATIONAL...

  • Page 30: Location Clearances

    Data Section, identify each mount and its correct to the control panel using shielded cable. There location on the unit. should be a straight run of piping of at least five pipe YORK INTERNATIONAL...

  • Page 31: Water Treatment

    1" N.P.T. connection can be obtained temperatures, should be protected using insulation and from YORK as an accessory for the unit. Alternatively, heater tape and/or a suitable glycol solution. The liquid a differential pressure switch sited across an orifice plate pump(s) must also be used to ensure liquid is circulated may be used, preferably of the high/low limit type.

  • Page 32: Pipework Arrangement

    COOLER CONNECTIONS Aerated, brackish or salt water is not recommended for Standard chilled liquid connections on all coolers are of use in the water system(s). YORK recommends that a the Victaulic Groove type. water treatment specialist is consulted to determine that the proposed water composition will not affect the evapo- rator materials of carbon steel and copper.

  • Page 33: Ductwork Connection

    If the ducts from two or more fans are to be combined into a common duct, back-flow dampers should be fit- tion (not supplied by YORK). ted in the individual fan ducts. This will prevent recircu- lation of air when only one of the fans is running.

  • Page 34: 115Vac Control Supply Transformer

    7.5 m (25 ft.) unless an optional input isolator kit is It is important to check that the cor- fitted. The optional input isolator kit uses 15VDC (not rect primary tapping has been used, 30VDC). and that it conforms to the site high voltage supply. YORK INTERNATIONAL...

  • Page 35: Volts Free Contacts

    12) for No.2 System. Remote Setpoint Offset – Current Timed contact closure of a suitable contact connected to terminals 13 and 16 (Figures 11 and 12) (PWM con- tacts) will provide remote offset of EMS% CURRENT LOAD LIMIT. YORK INTERNATIONAL...

  • Page 36: Fig. 8 - Power Panel Section Options

    Installation FORM 150.52-NM2 (1001) POWER AND CONTROL PANEL LAYOUTS 00416VIP FIG. 8 – POWER PANEL SECTION OPTIONS PANEL WITH TRANSFORMER YORK INTERNATIONAL...
  • Page 37 FORM 150.52-NM2 (1001) OPTIONS PANEL LAYOUT (TYPICAL) 00413VIP FIG. 8 – POWER PANEL SECTION OPTIONS PANEL WITH TRANSFORMER (CONTINUED) YORK INTERNATIONAL...

  • Page 38: Fig. 9 - Logic Section Layout

    DESCRIPTION Microprocessor Board Back of Keypad Back of Display I/O Expansion Board #1 Power Supply Board Relay Output Board #1 Relay Output Board #2 Flow Switch and Customer Connection Terminals Circuit Breakers FIG. 9 – LOGIC SECTION LAYOUT YORK INTERNATIONAL...

  • Page 39: Fig. 10 - Logic Section Layout W/Control Panel

    FORM 150.52-NM2 (1001) LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT 00415VIP FIG. 10 – LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT YORK INTERNATIONAL...

  • Page 40: Fig. 11 - Customer Connections

    Flow Switch System No. 1 Run System No. 1 Alarm Contacts System No. 2 Run Current Chilled Liquid Circulating Pump Start Temperature System No. 2 Print Alarm Contacts Chiller Run Isolator Auxiliary Interlock LD03502 FIG. 11 – CUSTOMER CONNECTIONS YORK INTERNATIONAL...
  • Page 41 FORM 150.52-NM2 (1001) CUSTOMER CONNECTIONS RELAY BOARDS I/O EXPANSION BOARD TRANSFORMERS POWER SUPPLY BOARD CIRCUIT BREAKERS 28965A CUSTOMER MICROPROCESSOR CONNECTIONS CIRCUIT BOARD 115VAC SUPPLY (Flow Switch, Alarm, Run, etc.) FIG. 12 – CUSTOMER CONNECTIONS YORK INTERNATIONAL...

  • Page 42: Section 5 Commissioning

    FORM 150.52-NM2 (1001) SECTION 5 – COMMISSIONING PREPARATION To add oil to a circuit, connect a YORK hand oil pump (Part No. 470-10654-000) to the 1/4" oil priming valve Commissioning of this unit should on the oil separator piping with a length of clean hose or copper line, but do not tighten the flare nut.
  • Page 43 Program the daily and holiday start/stop by pressing the cooler. Purge air from the top of the cooler using the plugged air vent mounted on the top of the cooler the ‘Set Schedule/Holiday’ key. (See Section 9 [7.3].) YORK INTERNATIONAL...

  • Page 44: First Time Start-Up

    Switch the unit switch to the ‘0’ posi- ‘ON’ position and restart the unit. tion (OFF). YORK INTERNATIONAL...

  • Page 45: Section 6 Operation

    The units are designed to work independently, or in con- automatic. After an initial period at minimum capacity junction with, other equipment via a YORK ISN build- on the lead compressor, the control system will adjust ing management system or other automated control sys- the unit load depending on the chilled liquid temperature tem.

  • Page 46: Section 7 Technical Data

    0315, 0345, 0365, 0385, 0415, 0435 0485, 0525, 0575, 0645, 0685 0485, 0525, 0575, 0645, 0685 Cooler pressure drops are approxi- mate. (A Flow Meter should be used to verify flow.) FIG. 13 – FLOW RATE AND PRESSURE DROP CHARTS YORK INTERNATIONAL...

  • Page 47: Glycol Correction Factors

    PROPYLENE GLYCOL Mean Temperature Through Cooler Concentration W/W Excessive flow will cause damage to the cooler. Do not exceed maximum cooler GPM. Special care should be taken when multiple chillers are fed ˚C by a single pump. LD03504 YORK INTERNATIONAL...

  • Page 48: Physical Data

    Water Volume, liters Maximum Water Side Pressure, Bar Maximum Refrigerant Side Pressure, Bar Minimum Chilled Water Flow Rate, Bar 11.4 Maximum Chilled Water Flow Rate, Bar 37.9 37.9 37.9 37.9 37.9 Water Connections, inches 1 Optional 21 Bar Waterside available YORK INTERNATIONAL...
  • Page 49 2 / 1.8 2 / 1.8 2 / 1.8 2 / 1.8 2 / 1.8 19.3 19.3 19.3 19.3 19.3 19.3 53,989 53,989 53,989 53,989 53,989 67,486 12.3 13.4 14.1 15.6 16.5 17.5 37.9 47.1 47.1 47.1 47.1 47.1 YORK INTERNATIONAL...
  • Page 50 85,808 EVAPORATOR, DIRECT EXPANSION Water Volume, gallons Maximum Water Side Pressure, PSIG Maximum Refrigerant Side Pressure, PSIG Minimum Chilled Water Flow Rate, gpm Maximum Chilled Water Flow Rate, gpm Water Connections, inches 1 Optional 300 PSIG Waterside available YORK INTERNATIONAL...
  • Page 51 2 / 1.8 2 / 1.8 2 / 1.8 2 / 1.8 2 / 1.8 1160 1160 1160 1160 1160 1160 35.4 35.4 35.4 35.4 35.4 35.4 10,761 10,761 10,761 10,761 10,761 10,761 114,400 114,400 114,400 114,400 114,400 143,000 YORK INTERNATIONAL...

  • Page 52: Temperatures And Flows

    1. For leaving brine temperature below 4.4°C (40°F), contact your nearest YORK office for application requirements. 2. For leaving water temperature higher than 12.8°C (55°F), contact the nearest YORK office for application guidelines. 3. The evaporator is protected against freezing to -28.8°C (-20°F) with an electric heater as standard.

  • Page 53: Electrical Notes

    S.P. WIRE = Single-Point Wiring = Not Available = Wye-Delta Start = Running Load Amps X-LRA = Across-The-Line Inrush Locked Rotor Amps = Full Load Amps PW-LRA = Part-Wind Inrush Locked Rotor Amps ACL/LRA = Across-the-Line Inrush Amps YORK INTERNATIONAL...

  • Page 54: Multiple Point Power Supply Connection

    251.0 1/0 AWG to 500 MCM (1)6-350KCM (2)3/0-250KCM 19.0 YCAR0645 304.5 1/0 AWG to 500 MCM (2)3/0-250KCM (2)3/0-250KCM 1173 19.0 YCAR0685 304.5 1/0 AWG to 500 MCM (2)3/0-250KCM (2)3/0-250KCM 1173 19.0 See page 53 for Electrical Data footnotes. YORK INTERNATIONAL...
  • Page 55 2 AWG to 300 MCM (1)6-350KCM (2)3/0-250KCM 19.0 YCAR0575 251.0 1/0 AWG to 500 MCM (1)6-350KCM (2)3/0-250KCM 19.0 YCAR0645 254.5 1/0 AWG to 500 MCM (1)6-350KCM (2)3/0-250KCM 19.0 YCAR0685 304.5 1/0 AWG to 500 MCM (2)3/0-250KCM (2)3/0-250KCM 1173 19.0 YORK INTERNATIONAL...

  • Page 56: Optional Single-Point Power Supply Connection With Internal Unit Circuit Breakers

    (2) 250KCM - 500KCM YCAR0575 455.0 (2) 2AWG - 300KCM (2) 250KCM - 500KCM YCAR0645 511.5 (2) 1/0 - 500KCM (2) 250KCM - 500KCM YCAR0685 551.5 (2) 1/0 - 500KCM (2) 250KCM - 500KCM See page 53 for Electrical Data footnotes. YORK INTERNATIONAL...
  • Page 57 SYSTEM #2 CHILLER COMPRESSOR DATA FAN DATA 11, 12 COMPRESSOR DATA FAN DATA 11,12 VOLTS MODEL PW-LRA X-LRA PW-LRA X-LRA YCAR (EA) (EA) (EA.) (EA) YCAR0315 YCAR0345 YCAR0365 YCAR0385 YCAR0415 YCAR0435 YCAR0485 YCAR0525 YCAR0575 YCAR0645 1173 YCAR0685 1173 1173 YORK INTERNATIONAL...

  • Page 58: Power Connection Options

    Field connections to factory-provided Non-Fused Disconnect Switch (Opt), or Ter- minal Block (Opt) in the Options Panel. Factory connections to Circuit Breakers in each of the two Power Panels. Optional Field Provided 115-1-60 Micro panel Supply LD04922 YORK INTERNATIONAL...

  • Page 59: Fig. 16 - Optional Single-Point Power Supply W/Field Supplied Circuit Protection

    Field connections to Terminal Block or Non-Fused Disconnect Switch in the Op- tions Panel. Factory connec- tions to Terminal Blocks in each of the two Power Panels. Optional Field Provided 115-1-60 Micro panel Supply LD04923 YORK INTERNATIONAL...

  • Page 60: Wiring Diagrams

    LEGEND Transient Voltage Suppression Terminal Block for Customer Connections Terminal Block for Customer Low Voltage (Class 2) Connections. See Note 2 Terminal Block for YORK Connections Only Wiring and Components by YORK Optional Equipment Wiring and/or Components by Others LD04950A FIG.

  • Page 61: Fig. 18 - Standard Dual Compressor Power Supplies - Part-Wind Start

    LEGEND Transient Voltage Suppression Terminal Block for Customer Connections Terminal Block for Customer Low Voltage (Class 2) Connections. See Note 2 Terminal Block for YORK Connections Only Wiring and Components by YORK Optional Equipment Wiring and/or Components by Others LD04950B FIG.
  • Page 62 Any contacts connected to flow switch inputs or BAS inputs on terminals 13 - 19 or TB3, or any other terminals, must be suppressed with a YORK P/N 031-00808-000 suppressor across the relay/ contactor coil.
  • Page 63 Transient Voltage Suppression Terminal Block for Customer Connections Terminal Block for Customer Low Voltage (Class 2) Connections. See Note 2 Terminal Block for YORK Connections Only Wiring and Components by YORK Optional Equipment Wiring and/or Components by Others YORK INTERNATIONAL...
  • Page 64 Technical Data FORM 150.52-NM2 (1001) YCAR0315 – YCAR0685 WIRING DIAGRAM CONNECTION DIAGRAM – CONTROL CIRCUIT FIG. 19 – YCAR0315 – YCAR0685 WIRING DIAGRAM - CONNECTION DIAGRAM, CONTROL CIRCUIT YORK INTERNATIONAL...
  • Page 65 FORM 150.52-NM2 (1001) LD04928 YORK INTERNATIONAL...

  • Page 66: Fig. 20 - Control Circuit - Detail "B

    Technical Data FORM 150.52-NM2 (1001) YCAR0315 – YCAR0685 WIRING DIAGRAM CONTROL CIRCUIT ACROSS-THE-LINE START PART-WIND START LD04927 FIG. 20 – CONTROL CIRCUIT - DETAIL “B” FIG. 21 – CONTROL CIRCUIT - DETAIL “B” (ACROSS-THE-LINE START) (PART-WIND START) YORK INTERNATIONAL...

  • Page 67: Fig. 22 - Control Circuit, Detail "C

    FORM 150.52-NM2 (1001) YCAR0315 – YCAR0685 WIRING DIAGRAM CONTROL CIRCUIT YCAR0315 – YCAR0385 YCAR0415 – YCAR0525 YCAR0575 – YCAR0685 LD04947 FIG. 22 – CONTROL CIRCUIT, DETAIL “C” YORK INTERNATIONAL...

  • Page 68: Fig. 23 - Ycar0315 - Ycar0685 Wiring Diagram

    Technical Data FORM 150.52-NM2 (1001) YCAR0315 – YCAR0685 WIRING DIAGRAM CONNECTION DIAGRAM – ELECTRICAL BOX FIG. 23 – YCAR0315 – YCAR0685 WIRING DIAGRAM - CONNECTION DIAGRAM, ELECTRICAL BOX YORK INTERNATIONAL...
  • Page 69 FORM 150.52-NM2 (1001) LD06170 YORK INTERNATIONAL...

  • Page 70: Fig. 24 - Connection Diagram, System Wiring

    Technical Data FORM 150.52-NM2 (1001) YCAR0315 - 0685 WIRING DIAGRAM CONNECTION DIAGRAM – SYSTEM WIRING ACROSS-THE-LINE START LD04938 LD04939 LD04940 LD04941 LD04942 LD04943 FIG. 24 – CONNECTION DIAGRAM, SYSTEM WIRING – ACROSS-THE-LINE START YORK INTERNATIONAL...

  • Page 71: Fig. 25 - Connection Diagram, System Wiring Part-Wind Start

    FORM 150.52-NM2 (1001) YCAR0315 - 0685 WIRING DIAGRAM CONNECTION DIAGRAM – SYSTEM WIRING PART-WIND START LD04929 LD04930 LD04931 LD04932 LD04933 LD04934 FIG. 25 – CONNECTION DIAGRAM, SYSTEM WIRING – PART-WIND START YORK INTERNATIONAL...

  • Page 72: Fig. 26 - Connection Diagram, Electrical Box

    Technical Data FORM 150.52-NM2 (1001) YCAR0315 - 0685 WIRING DIAGRAM CONNECTION DIAGRAM – ELECTRICAL BOX LD04953 FIG. 26 – CONNECTION DIAGRAM, ELECTRICAL BOX YORK INTERNATIONAL...

  • Page 73: Fig. 27 - Connection Diagram, System Wiring

    FORM 150.52-NM2 (1001) YCAR0315 - 0685 WIRING DIAGRAM CONNECTION DIAGRAM – SYSTEM WIRING ACROSS-THE-LINE-START 315 - 385 415 - 525 575 - 685 FIG. 27 – CONNECTION DIAGRAM, SYSTEM WIRING – ACROSS-THE-LINE START LD07265 YORK INTERNATIONAL...

  • Page 74: Fig. 28 - Connection Diagram, System Wiring Part-Wind Start

    Technical Data FORM 150.52-NM2 (1001) YCAR0315 - 0685 WIRING DIAGRAM CONNECTION DIAGRAM – SYSTEM WIRING PART-WIND START 315 - 385 415 - 525 575 - 685 LD07266 FIG. 28 – CONNECTION DIAGRAM, SYSTEM WIRING – PART-WIND START YORK INTERNATIONAL...

  • Page 75: Fig. 29 - Elementary Diagram, Power Circuit

    FORM 150.52-NM2 (1001) YCAR0315 - 0685 ELEMENTARY DIAGRAM STANDARD AND REMOTE EVAPORATOR UNITS – POWER CIRCUIT FIG. 29 – ELEMENTARY DIAGRAM, POWER CIRCUIT – STANDARD AND REMOTE EVAPORATOR UNITS YORK INTERNATIONAL...

  • Page 76: Fig. 30 - Control Power Transformer Kit

    Technical Data FORM 150.52-NM2 (1001) YCAR0315 - 0685 ELEMENTARY DIAGRAM STANDARD AND REMOTE EVAPORATOR UNITS – CONTROL POWER TRANSFORMER KIT LD04949 FIG. 30 – CONTROL POWER TRANSFORMER KIT YORK INTERNATIONAL...

  • Page 77: Fig. 31 - Control Circuit - Detail "A

    FORM 150.52-NM2 (1001) YCAR0315 - 0685 WIRING DIAGRAM CONTROL CIRCUIT LD04926 FIG. 31 – CONTROL CIRCUIT – DETAIL “A” YORK INTERNATIONAL...

  • Page 78: Dimensions

    Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK's unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 79 0415 3050 1144 1022 0415 3000 1149 1093 2438 1981 SYS. #1 SYS. #2 8" 8" POWER OPENING WATER INLET WATER OUTLET (FAR SIDE) (2) 57 DIA. RIGGING 1302 2108 HOLES (EACH SIDE) 2506 4499 LD03546 SIDE VIEW YORK INTERNATIONAL...
  • Page 80 Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK's unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 81 43" 36" 96" 78" SYS. #1 SYS. #2 2" 8" 8" 7-1/4" POWER OPENING WATER OUTLET WATER INLET (FAR SIDE) (7" x 21") (2) 2-1/4" DIA. RIGGING 56-7/16" 83" HOLES (EACH SIDE) 37-1/2" 98-11/16" 177-1/8" SIDE VIEW LD03542 YORK INTERNATIONAL...
  • Page 82 Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK's unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 83 3810 1168 1092 2438 1981 8" POWER OPENING WATER OUTLET (2) 57 DIA. RIGGING (FAR SIDE) HOLES (EACH SIDE) 2108 FOR MODELS 0435, 0485 1385 2718 FOR MODELS 0575, 0645 8" 2988 WATER INLET 5718 LD07033 SIDE VIEW YORK INTERNATIONAL...
  • Page 84 Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK's unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 85 2" 8" 8" 7-1/4" POWER OPENING WATER INLET WATER OUTLET (FAR SIDE) (2) 2-1/4" DIA. RIGGING 83" FOR MODELS 0435 & 0485 54-1/2" HOLES (EACH SIDE) 107" FOR MODELS 0575 & 0645 117-5/8" 37-1/2" 225-1/8" SIDE VIEW LD07034 YORK INTERNATIONAL...
  • Page 86 Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK's unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 87 CENTER OF GRAVITY (Copper) YCAR YCAR 0685 3912 1168 1034 0575 3810 1168 1092 2438 1981 8" 8" POWER OPENING WATER OUTLET (3) 57 DIA. RIGGING WATER INLET (FAR SIDE) HOLES (EACH SIDE) 2718 1382 2184 1900 6937 SIDE VIEW LD03570 YORK INTERNATIONAL...
  • Page 88 Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK's unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 89 154" 46" 40.7" 0685 150" 46" 43" 36" 96" 78" 2" 8" POWER OPENING 8" 7-1/4" WATER OUTLET (3) 2-1/4" DIA. RIGGING (FAR SIDE) WATER INLET HOLES (EACH SIDE) 107" 54-7/16" 37-1/2" 86" 74-13/16" 273-1/8" SIDE VIEW LD03566 YORK INTERNATIONAL...

  • Page 90: Clearances

    2 mm (1/8" between resilient washer and (1/4") shim between the upper load plate and verti- underside of channel cap plate. cal uprights. Lower the equipment on the blocking 10. Installation is now complete. or shimmed isolators. YORK INTERNATIONAL...

  • Page 91: Isolator Dimensions

    1-1/4 7-1/2 3-3/4 7-3/4 14-1/2 7-1/4 1000-1628 AWMR-1 10-1/2 3-1/2 1-3/4 8-1/2 4-1/4 10-1/2 50-553 11NC AWMR-2 7-1/2 3-3/4 9-1/2 14-1/2 7-1/4 50-553 10NC AWMR-4 1-1/4 7-1/2 3-3/4 9-3/4 14-1/2 7-1/4 52-553 FIG. 33 – AWMR DIMENSIONS (INCHES) YORK INTERNATIONAL...

  • Page 92: Weight Distribution - Aluminum Fin Coils

    ALUMINUM FIN COIL WEIGHT DISTRIBUTION BY MODEL (KGS) 60 Hz TOTAL YCAR0315 — — 4,159 YCAR0345 — — 4,174 YCAR0365 — — 4,184 YCAR0385 — — 4,243 YCAR0415 4,816 YCAR0435 4,826 YCAR0485 5,187 YCAR0525 5,270 YCAR0575 5,852 YCAR0645 5,863 YCAR0685 5,892 YORK INTERNATIONAL...

  • Page 93: Isolator Selection - Aluminum Fin Coils

    AWMR-2-532 3000 1360.8 ALUMINUM FIN COIL 1" DEFL. ISOLATOR SELECTION / LOCATION VMC TYPE CP-2-XX (See Table Above) YCAR 0315 — — 0345 — — 0365 — — 0385 — — 0415 0435 0485 0525 0575 0645 0685 YORK INTERNATIONAL...

  • Page 94: Weight Distribution - Copper Fin Coils

    COPPER FIN COIL WEIGHT DISTRIBUTION BY MODEL (KGS) 60 Hz TOTAL YCAR0315 — — 4,595 YCAR0345 — — 4,604 YCAR0365 — — 4,614 YCAR0385 — — 4,674 YCAR0415 5,391 YCAR0435 5,401 YCAR0485 5,762 YCAR0525 5,844 YCAR0575 6,569 YCAR0645 6,580 YCAR0685 1,001 6,609 YORK INTERNATIONAL...

  • Page 95: Isolator Selection - Copper Fin Coils

    AWMR-2-531 2552 1157.6 AWMR-2-532 3000 1360.8 COPPER FIN COIL 1" DEFL. ISOLATOR SELECTION VMC TYPE CP-2-XX (See Table Above) YCAR 0315 — — 0345 — — 0365 — — 0385 — — 0415 0435 0485 0525 0575 0645 0685 YORK INTERNATIONAL...

  • Page 96: Refrigerant Flow Diagram

    Low pressure vapor enters the compressor where pres- and further cooling takes place before returning to the sure and superheat are increased. The high pressure va- cooler. por is fed to the Air-cooled condenser coil and fans where FIG. 33 – REFRIGERANT FLOW DIAGRAM YORK INTERNATIONAL...

  • Page 97: Process And Instrumentation Diagram

    FORM 150.52-NM2 (1001) PROCESS AND INSTRUMENTATION DIAGRAM LD06386 FIG. 34 – PROCESS AND INSTRUMENTATION DIAGRAM YORK INTERNATIONAL...

  • Page 98: Section 8 Start-Up

    START-UP TECHNICIAN/ COMPANY: _______________________________ If it is necessary to add oil, connect a YORK oil pump to the oil charging valve on the compres- START-UP DATE : _________________________ sor, but do not tighten the flare nut on the delivery tubing.

  • Page 99: Panel Checks

    Disch Press Unld = _______________ kPa (PSIG) ant in the liquid indicator; and, usually no more than 13.8 kPa (2 PSIG) variation in suction pres- Suction Press Cutout = ____________ kPa (PSIG) sure for any given set of operating conditions. YORK INTERNATIONAL...

  • Page 100: Checking Subcooling And Superheat

    Assure that superheat is set at 7 - 8°C Add charge as needed to increase subcooling, and re- (2 - 15°F). move charge as necessary to reduce subcooling. When- ever removing charge, be sure to recover it in an ap- proved container. YORK INTERNATIONAL...

  • Page 101: Leak Checking

    Temp = ____ ____ ____ ____ °C (°F) Superheat = ____ ____ ____ ____ °C (°F) Proper subcooling and superheat will assure optimum performance and reliability of the system. Checks should always be made when commissioning a chiller, and on a yearly basis. YORK INTERNATIONAL...

  • Page 102: Chiller Control Panel Programming And Data Access

    This key is used for display and programming of the chiller operational settings and limits. This switch shuts down the entire chiller when placed in the OFF position. The switch must be ON for the chiller to operate. YORK INTERNATIONAL...

  • Page 103: Introduction And Physical Description

    External interface is available for control of the chiller to turn the entire chiller OFF, if desired. The switch via a YORK ISN System or YORK Remote Control must be placed in the ON position for the chiller to op- Center.

  • Page 104: Ancillary Circuit Boards

    The boards convert 0 - 12VDC logic processor will not be active and the micro cannot keep levels outputs from the Microprocessor Board to track of time, although all other functions will operate 115VAC levels used by the contactors, valves, etc. YORK INTERNATIONAL...

  • Page 105: Circuit Breakers

    17% of the average motor current in one rent, unbalanced current, and single phasing. of the phases, the Motor Protector will recognize it and shut the system down. YORK INTERNATIONAL...

  • Page 106: Fig. 35 - Motor Protector

    Micro Panel FORM 150.52-NM2 (1001) 29119A SIDE VIEW 29121A 29121A TOP VIEW TOP VIEW DISPLAY SWITCH PUSHED TO LEFT INDICATES “ON” 29120A SIDE VIEW FIG. 35 – MOTOR PROTECTOR YORK INTERNATIONAL...

  • Page 107: Ems/Bas Controls

    Remote Reset Curr = 105% FLA - {(4sec - 1 sec) X (75%FLA)} Never bypass a flow switch. This will 10 sec cause damage to the chiller and void = 105% - 225%FLA sec any warranties. 10 sec = 82.5% FLA YORK INTERNATIONAL...
  • Page 108 22°C (40°F), the temperature offset would equal: pressor (50Hz models) across the in- ductive coil. ° Reset Temp = (4 sec - 1 sec) X 40 10 sec Reset Temp = 120 ° F sec 10 sec = 12 ° F (6 ° YORK INTERNATIONAL...

  • Page 109: Microprocessor Board Layout

    NOTE : Dimple is positioned at top edge Dip Switch Set (8 switches) System Switches S2 = System 1 S3 = System 2 S2 to S5 S4 = System 3 S5 = System 4 FIG. 36 – COMPONENT LAYOUT YORK INTERNATIONAL...

  • Page 110: Logic Section Layout

    DESCRIPTION Microprocessor Board Back of Keypad Back of Display I/O Expansion Board #1 Power Supply Board Relay Output Board #1 Relay Output Board #2 Flow Switch and Customer Connection Terminals Circuit Breakers FIG. 37 – LOGIC SECTION LAYOUT YORK INTERNATIONAL...

  • Page 111: Anti-Recycle Timer

    The message Each compressor has its own heater. The heater will be will disappear when the compressor shuts off. off whenever the compressor is running. YORK INTERNATIONAL...

  • Page 112: Alarms

    Under some circumstances, a pumpdown cal equipment) and the alarm circuit may occur when a compressor is called should fail to function, YORK will not to come on for cooling. If this occurs, the be liable for damages. compressor will restart to provide cool- ing after the pumpdown is complete and 1.20 RUN STATUS (CHILLER)

  • Page 113: Lead / Lag Compressor Selection

    4. If all compressors are waiting to start (Anti-recycle timers have not timed out), the micro will assign the lead to the compressor with the shortest anti- recycle time in an effort to provide cooling quickly. YORK INTERNATIONAL...

  • Page 114: Status Key And Fault Messages

    Control Center) has turned the unit OFF through These messages are described in detail in this section, the RS-485 port. with examples of each display. In each example "#" is used as applicable to represent the system number where messages apply to individual systems. YORK INTERNATIONAL...
  • Page 115 The display shows the time before the respective Range, the Chiller ON/OFF switch is ON, remote cy- compressor can start. This display will only appear af- cling devices are closed, and system switches permit. ter the anti-recycle timers have timed out. YORK INTERNATIONAL...

  • Page 116: Unit Warnings

    The U13 RTC chip on the Microprocessor Board should Anticipation controls monitor discharge pressure, motor be replaced as soon as possible with YORK part # 031- current and suction temperature for each compressor 00955-000. Otherwise, the chiller will shutdown and...

  • Page 117: Unit Fault Status Messages

    L I M I T I N G Any time that a Unit Fault occurs, the shutdown will be S Y S S U C T L I M I T I N G logged into the HISTORY BUFFER. YORK INTERNATIONAL...

  • Page 118: Individual Start Inhibit Safeties

    This is accessible by pressing the STATUS key. 115VAC Under Voltage Cutout: U N I T F A U L T 1 1 5 V A C U N D E R V O L T A G E YORK INTERNATIONAL...

  • Page 119: System Fault (Safety) Status Messages (Manual Reset)

    Failure to repair the cause of the fault by operation at low refrigerant charge or restricted re- while manually allowing repetitive re- starts may cause further expensive damage to the system. YORK INTERNATIONAL...

  • Page 120: Fig. 38 - Suction Pressure Cutout

    60 - 85% FLA depending on drop below 10% of the cutout initially programmed and operating conditions. must be greater than: YORK INTERNATIONAL...

  • Page 121: Printout On Fault Shutdown

    A fault lockout will result if matic printout. This is not a cause for safety thresholds are exceeded three times in a 90 concern, unless oil pressure faults, liq- minute period. uid slugging, or motor overheating continuously occur. YORK INTERNATIONAL...

  • Page 122: Display Keys And Option Switches

    The Display keys and the data available from each is as saturated suction temperature, suction superheat, load follows: stage, and cooler inlet refrigerant temp. Examples of these displays are as follows, where # is the appropriate system number. YORK INTERNATIONAL...

  • Page 123: Ambient Temp Key

    Oil Temp. -14°C (7°F) 94.5°C (202.1°F) Systems 3 and 4 on larger models: Suction Temp. -13°C (9°F) 56°C (132.8°F) Sat. Suction Temp. -41.0°C (-41°F) 39°C (101.3°F) Suction Superheat -63°C (-81.5°F) 16°C (60.9°F) Load Stage YORK INTERNATIONAL...

  • Page 124: Options Key And Dip Switch Settings

    4.4 to 11.1°C (40 to 52 °F). may cause serious damage to the chiller. Selecting this mode also auto-programs the Low Chilled Liquid Cutout at 2°C (36°F) and the Suction Pressure Cutout at 3 bar (44 PSIG). YORK INTERNATIONAL...

  • Page 125: Function Key

    The following keys can be scrolled using the Function pushed in Key: Chilled Liquid Temps, System # Data, Motor Current and Options. “CLOSED” Position: LD03511B Right side of switch pushed in LD03511A FIG. 39 – ENLARGED PHOTOGRAPH OF DIP SWITCHES ON MICROPROCESSOR BOARD YORK INTERNATIONAL...

  • Page 126: Print Keys

    “rate control” ted from the microprocessor to the remote printer. As and “temperature deviation from setpoint” to determine the data is transmitted it is erased from the memory. when loading should occur. YORK INTERNATIONAL...
  • Page 127 EMS PWM Temp. Reset Enabled S O F T W A R E V E R S I O N CUR/TEMP – EMS PWM Current Limiting and C . R 0 9 . 2 3 . 0 1 Temperature Reset Enabled YORK INTERNATIONAL...

  • Page 128: Operating Data - Remote Printout

    102.8 °F similar printouts for the appropriate number of systems: SAT SUCTION TEMP 31.7 °F SUCTION SUPERHEAT 11.2 °F YORK INTERNATIONAL CORPORATION COMPRESSOR LOAD STAGE MILLENNIUM RECIP CHILLER COOLER INLET REFRIG 23.6 °F LIQUID LINE SOLENOID HOT GAS BYPASS SOLENOID...

  • Page 129: Fault History Data - Local Display Messages

    This message indicates the fault that caused the shut- This display shows the Low Ambient Cutout pro- down; in this case, a high motor current in System 2 grammed at the time of the fault. was the cause of the shutdown. YORK INTERNATIONAL...
  • Page 130 Full Load Amps. A M B I E N T A I R T E M P 7 2 . 6 ° F This message indicates the outdoor Ambient Air Tem- perature at the time of the fault. YORK INTERNATIONAL...

  • Page 131: Fault History Data - Remote Printout

    ON = Energized / OFF = De-Energized (OFF) at the time of the fault. S Y S F A N S T A G E This message indicates the stage of condenser fan op- eration on the system. See Section 8.4 for details of fan staging. YORK INTERNATIONAL...
  • Page 132 Micro Panel FORM 150.52-NM2 (1001) SAMPLE PRINTOUT OF FAULT HISTORY DATA SYSTEM 2 DATA YORK INTERNATIONAL CORPORATION MILLENNIUM SCREW CHILLER COMPRESSORS STATUS RUN TIME 0- 0-15-26 D-H-M-S SAFETY SHUTDOWN NUMBER 1 MOTOR CURRENT 104 AMPS 87 %FLA SHUTDOWN @ 3:56 PM 28 AUG 00...

  • Page 133: Entry Keys

    If example, pressing the key when the cursor is on “PM” this is not done, the new values entered will be lost and changes it to “AM”. the original values will be returned. YORK INTERNATIONAL...

  • Page 134: Setpoints Keys And Chilled Liquid Control

    (44.0°F) The Setpoints keys are used to program the required range) chilled water liquid temperature for the application. This is accomplished by programming the “Setpoint” and 6.0°C the acceptable deviation (+ or - Range) This deviation (42.0°F) YORK INTERNATIONAL...

  • Page 135: Local Cooling Setpoints Key

    After pressing the Enter key, the display will continue 30-second unload timer determines when the micro may to show the message until another key is pressed. adjust the chiller capacity to keep the chilled liquid tem- perature within the control range. A fuzzy logic load- YORK INTERNATIONAL...

  • Page 136: Compressor Capacity Loading Sequence

    The Load Timer will reset to 60 seconds, ture rises above the high end of the Control Range and and the Unload Timer to 30 seconds. YORK INTERNATIONAL...

  • Page 137: Fuzzy Logic" "Loading" Anticipatory Control

    If saturated suction temperature is less than 110 - 101% of the internal limit of 4°C (24°F) for water chill- ing or setpoint – 6°C (11°F) for brine chilling – the respective system will not be allowed to load. YORK INTERNATIONAL...

  • Page 138: Fuzzy Logic" "Unloading" Anticipatory Control

    If Saturated Suction temperature drops below 24°F (chilled liquid applications) or setpoint minus 11° (brine YORK INTERNATIONAL...

  • Page 139: Clock Keys

    M O N S T A R T 0 6 : 0 0 site time period. Press ENTER to advance to the day of S T O P 0 5 : 3 0 the month. YORK INTERNATIONAL...
  • Page 140 The Holiday Schedule is only per- Programming the DAILY SCHED- formed once, then erased from ULE will not affect on the holiday memory. This avoids the need for schedule. reprogramming after the holiday, as most special Holiday Schedule requirements occur only occasionally. YORK INTERNATIONAL...

  • Page 141: Manual Override Key

    30 minutes. The following status mes- See also Section 9 (2.5). sage will be observed when in the Manual Override Mode: M A N U A L O V E R R I D E YORK INTERNATIONAL...

  • Page 142: Program Key

    Failure to properly desired language. program these values may cause damage to the Chiller or operating Pressing the Enter key repeatedly allows scrolling problems. through the programmable displays. YORK INTERNATIONAL...

  • Page 143: Program Key - User Programmable Values

    Typically, the unload point should be set 1.4 to 1.7 bar (20 - 25 PSIG) below the discharge pressure cutout set- 33.3 – 20 New Cutout = 44 x = 1.2 bar (17.6 PSIG) ting. The micro will accept a range of programmable 33.3 YORK INTERNATIONAL...
  • Page 144 -17°C (1°F) for more than To program the High Ambient Cutout, key in the re- a short time. quired setting and press the Enter key to store the value into memory and scroll to the next display. YORK INTERNATIONAL...
  • Page 145 If the programmable limit is set between 100% and 105% 600 seconds is recommended. of full load current, this safety will protect against ex- YORK INTERNATIONAL...
  • Page 146 In most cases, automatic lead/lag is selected to allow the micro to attempt to balance run time between the system. Details of manual and automatic lead / lag operation are outlined in Section 9 (1.21). YORK INTERNATIONAL...

  • Page 147: Programming "Default" Values

    3.9°C Ambient ––– ––– 25.0°F Low Ambient Air Temp. Cutout -17.8°C 10.0°C -3.9°C Ambient –0°F 50.0°F 25.0°F ––– ––– 2.2°C Water Cooling Leaving Chilled Liquid ––– ––– 36.0°F Temperature Cutout -13.3°C 2.2°C 2.2°C Glycol Cooling 8.0°F 36.0°F 36.0°F YORK INTERNATIONAL...

  • Page 148: Condenser Fan Control

    FAN 7 FAN 9 FAN 2 FAN 4 FAN 6 FAN 8 FAN 10 YCAR 0315 YCAR 0415 YCAR 0575 0345 0435 0645 0365 0485 0685 0385 0525 LD07267 FIG. 40 – CONDENSER FAN LAYOUT FOR DXRT 2-COMPRESSOR UNITS YORK INTERNATIONAL...

  • Page 149: Table 3 - Condenser Fan Control And Fan Contactor Data For Dxrt Units With 3 Fans / System

    4, 6, 8, 10 >19.3 BAR <14.5 BAR and <26.7°C 16M, 17M, 18M, 19M 231, 232 10, 14 2, 4, 6, 8, 10 >20.0 BAR <15.2 BAR and <29.4°C 15M, 16M, 17M, 18M, 19M 230, 231, 232 10, 14, 15 YORK INTERNATIONAL...

  • Page 150: Section 10 Maintenance

    10 - 15 minutes. The oil level should be between the YORK shall not be liable for costs incurred to return upper half of the bottom sightglass and below the top of the unit to satisfactory condition.

  • Page 151: Chiller/Compressor Operating Log

    FORM 150.52-NM2 (1001) FIG 41 – OPERATING LOG YORK INTERNATIONAL...

  • Page 152: Maintenance Requirements

    Maintenance FORM 150.52-NM2 (1001) YORK INTERNATIONAL...

  • Page 153: Maintenance Requirements For York J,K And P Reciprocating Compressors

    FORM 150.52-NM2 (1001) YORK INTERNATIONAL...

  • Page 154: General Periodic Maintenance Checks Standard Units

    Check contactor contacts. Microprocessor controls: Check fault history. Check fan control function. Check program settings . Check ambient cutout function. Check HP / LP cutout function’s Check low oil pressure function. Check pump-down function. Check load / unload function. YORK INTERNATIONAL...

  • Page 155: Spare Parts

    Return 025-29964-000 Other spare parts vary depending on the unit model. Contact your local YORK Sales and Service Center for information and please quote the unit model number and serial number. When ordering spare parts, we will require the follow-...

  • Page 156: Troubleshooting

    Check mains supply is stable and within allowable UNDERVOLTAGE Poor mains supply voltage. limits. displayed. Check for voltage dip on compressor start. Chiller FAULT: Liquid line solenoid valve leaking. Replace solenoid valves. PUMPDOWN FAIL Compressor valves. Perform top head overhaul. displayed. YORK INTERNATIONAL...
  • Page 157 See also SYS # DSCH above design conditions. LIMITING. Check condenser oil cleanliness. SYS # SUCT LIMITING Low suction pressure has Check charge (low subcooling). displayed (Compressor activated unloading/limiting Check for high chilled liquid flow. suction unloading) YORK INTERNATIONAL...

  • Page 158: Sensor Calibration Charts

    Test Point ............Microboard J11-9/3 System 1: ............Microboard J13-7/1 System 2: ............Microboard J14-7/1 Oil Pressure: System 1: ............Microboard J13-8/3 System 2: ............Microboard J14-8/3 Discharge Pressure: System 1: ............Microboard J15-8/3 System 2: ............Microboard J15-7/1 YORK INTERNATIONAL...

  • Page 159: Limited Warranty

    BUYER’S SOLE AND EXCLUSIVE REMEDY IN Except for reciprocating replacement compressors, which THE EVENT OF A DEFECT IN WORKMANSHIP YORK warrants for a period of one year from date of OR MATERIALS. IN NO EVENT SHALL YORK’S shipment, YORK warrants reconditioned or replacement...

  • Page 160: Temperature Conversion Chart

    215.6 26.9 117.8 219.2 27.59 20.5 297.3 P.O. Box 1592, York, Pennsylvania USA 17405-1592 Tele. 800-861-1001 Subject to change without notice. Printed in USA Copyright © by York International Corporation 2001 www.york.com ALL RIGHTS RESERVED Form 150.52-NM2 (1001) New Release...

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