York MILLENNIUM YCAS 250 Manual
  1. Manuals
  2. Brands
  3. York Manuals
  4. Chiller
  5. MILLENNIUM YCAS 250
  6. Manual

York MILLENNIUM YCAS 250 Manual

Air cooled liquid chiller
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
INSTALLATION, OPERATION & MAINTENANCE
YCAS 250, 270, 300, 330 (3 COMPRESSOR)
YCAS 3 SYSTEM EPROMs
Microprocessor Board
031-01798-002
I/O Board #2 EPROM
031-02018-001
AIR-COOLED SCREW LIQUID CHILLERS
New Release
MILLENNIUM
YCAS AIR COOLED LIQUID CHILLER
YCAS 360, 400, 440 (4 COMPRESSOR)
STYLE F
60 Hz
®
MILLENNIUM
Form 201.18-NM3 (300)
®
YCAS 4 SYSTEM EPROMs
Microprocessor Board
031-01798-002
I/O Board #2 EPROM
031-02018-001
00258VIP

Advertisement

Table of Contents
loading

Related Manuals for York MILLENNIUM YCAS 250

Summary of Contents for York MILLENNIUM YCAS 250

  • Page 1 ® MILLENNIUM AIR-COOLED SCREW LIQUID CHILLERS INSTALLATION, OPERATION & MAINTENANCE New Release Form 201.18-NM3 (300) MILLENNIUM ® YCAS AIR COOLED LIQUID CHILLER YCAS 250, 270, 300, 330 (3 COMPRESSOR) YCAS 360, 400, 440 (4 COMPRESSOR) STYLE F 60 Hz 00258VIP YCAS 3 SYSTEM EPROMs YCAS 4 SYSTEM EPROMs Microprocessor Board...

  • Page 2: Table Of Contents

    Connection Types & Sizes ........32 Clock ................ 23 Cooler Connections ..........32 Print ................. 23 Option Flanges ............32 Program ..............23 Refrigerant Relief Valve Piping ......32 Accessories and Options ........23 Ductwork Connection ........... 32 YORK INTERNATIONAL...
  • Page 3 Internal Unit Circuit Breakers ......52 Process and Instrumentation Diagram ....123 Electrical Notes ............54 Component Locations – 3 Compressor Units ... 124 Compressor Data ............. 55 Component Locations – 4 Compressor Units ... 125 Fan Data ..............55 YORK INTERNATIONAL...
  • Page 4 Chilled Liquid Temps Key ..................156 System # Data Keys ....................157 Ambient Temp Key ....................157 Motor Current Key ....................157 Operating HRS / Start Counter Key ..............158 Options Key & Dip Switch Settings ..............158 Function Key ......................160 YORK INTERNATIONAL...
  • Page 5 Recommended Spares ..........................189 Recommended Compressor Oils ......................189 Associated Drawings ..........................189 SECTION TROUBLESHOOTING ....................190 Competent Persons Troubleshooting Guide ..................190 Sensor Calibration Charts ........................192 Limited Warranty Applied Systems ....................193 Temperature Conversion Chart ......................194 YORK INTERNATIONAL...

  • Page 6: Section 1 General Chiller Information & Safety

    Center. See Commissioning, page 41. specified in this manual. • Only genuine YORK approved spare parts, oils and This manual and the Microprocessor Operating Instruc- refrigerants must be used. Recommendations on tions contain all the information required for correct spare parts can be found on page 189.

  • Page 7: Responsibility For Safety

    This manual and any other document supplied with the unit, are the property of YORK which reserves all rights. Electrical They may not be reproduced, in whole or in part, with- The unit must be grounded.

  • Page 8: Rotating Parts

    Refrigerants and oils used in the unit are generally non- tem in an emergency. When operated, it removes the toxic, non-flammable and non-corrosive, and pose no electrical supply from the control system, thus shutting special safety hazards. Use of gloves and safety glasses down the unit. YORK INTERNATIONAL...

  • Page 9: 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 10 General Chiller Information & Safety MATERIAL SAFETY DATA Section 1 – PRODUCT NAME AND INFORMATION Product (Trade Name and Synonyms): YORK “L” Oil Chemical Name: Ester Chemical Family: Polyol Ester Formula: Proprietary CAS#: Proprietary Section 2 – COMPONENTS AND HAZARD STATEMENT This product is non-hazardous.
  • Page 11 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. CPI 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. YORK INTERNATIONAL...

  • Page 12: Section 2 Product Description

    INTRODUCTION All exposed power wiring is be routed through liquid- tight, non-metallic conduit. YORK YCAS Millennium chillers are designed for water or water-glycol cooling. All units are designed to General Description be located outside on the roof of a building or at ground The Air Cooled Screw Chiller utilizes many compo- level.

  • Page 13: Evaporator

    Condenser The fin and tube condenser coils are manufactured from seamless, internally enhanced, high condensing coeffi- LD03674 cient, corrosion resistant copper tubes arranged in stag- FIG. 2 – SCREW COMPRESSOR YORK INTERNATIONAL...

  • Page 14: Economizer

    15 ton TXV set for 10°F (5.5°C) superheat that flashes off 10 - 20% of the liquid from the condenser. 10 - 12 The oil (YORK “L” oil – a POE oil used for all refrig- tons are utilized for subcooling liquid refrigerant. The...

  • Page 15: Oil Cooling

    Compressor and fan starting contactors, fan motor ex- that could cause excessive motor current. This is ac- ternal overloads, control circuit serving compressor ca- complished by sending 3-phase current signals propor- YORK INTERNATIONAL...

  • Page 16: Motor Protector Module

    Wye-Delta) and the number of wires in each phase flashing alphanumeric value which can be decoded by that are routed through the C.T. the operator. A list of the codes follows: YORK INTERNATIONAL...

  • Page 17: Thermal Overload

    As indicated, to place a switch in the ON position re- quires pushing the switch to the left. Imbalance is defined as (High Phase - Low Phase)/High Phase It is recommended that an YORK Ser- vice Technician or the YORK factory Improper Phase Sequence be consulted before changing these...

  • Page 18: Motor Protector Dip Switch Settings

    Product Description TABLE 1 – MOTOR PROTECTOR DIP SWITCH SETTING CALCULATED DIP SWITCH SETTINGS ON MP (“1” indicated ON) TRIP SETTING YORK INTERNATIONAL...
  • Page 19 FORM 201.18-NM3 TABLE 1 – MOTOR PROTECTOR DIP SWITCH SETTING (CONT’D) CALCULATED DIP SWITCH SETTINGS ON MP (“1” indicated ON) TRIP SETTING YORK INTERNATIONAL...
  • Page 20 Product Description TABLE 1 – MOTOR PROTECTOR DIP SWITCH SETTING (CONT’D) CALCULATED DIP SWITCH SETTINGS ON MP (“1” indicated ON) TRIP SETTING YORK INTERNATIONAL...
  • Page 21 FORM 201.18-NM3 TABLE 1 – MOTOR PROTECTOR DIP SWITCH SETTING (CONT’D) CALCULATED DIP SWITCH SETTINGS ON MP (“1” indicated ON) TRIP SETTING YORK INTERNATIONAL...

  • Page 22: Motor Starting

    1S/2S and closes the normally closed 1S (SYS The standard display language is English, with 4 other 1) or 2S (SYS 2) contacts, energizing motor contactor languages available. 2M (SYS 1) or 4M (SYS 2), completing the “DELTA” connection of the motor. YORK INTERNATIONAL...

  • Page 23: Entry

    The supply with rent unload point, liquid temperature setpoint reset sig- appropriate branch circuit protection in accordance with nal from YORK ISN or building automation system. applicable Local codes, provides the unit control cir- cuit power supply via the panel mounted Emergency Additional functions (password protected) for program- Stop Switch.

  • Page 24: Dx Cooler Options

    1.0 g accelerated guards mounted on the exterior of the unit (Factory or force in all directions to 2" (51 mm). Level adjustable, field mounted). deflection may vary slightly by application. (Field mounted). YORK INTERNATIONAL...

  • Page 25: Unit Nomenclature And Nameplate Engineering Data

    14 15 BASE PRODUCT TYPE NOMINAL CAPACITY UNIT DESIGNATOR REFRIGERANT VOLTAGE/STARTER DESIGN/DEVELOPMENT LEVEL :Design Series F Tons :200 / 3/ 60 : YORK High Efficiency :R-22 :Engineering 0250 :230 / 3 /60 : Chiller 0270 :380 / 3/ 60 Change...
  • Page 26 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 EVAP. FIELD CONDENSER FIELD CABINET FIELD : Aluminum : 300 PSIG DWP Waterside : Wire (Full Unit) Enc. Panels (factory) :Copper : Double Thick Insulation : Wire (Full Unit) Enc.

  • 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 Prior to moving the unit, ensure that the installation permitted to sag or bow.

  • Page 28: Unit Rigging

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

  • Page 29: Section 4 Installation

    The channels should be spaced at the same centres as lence interfering with the unit airflow. the vibration mounting holes in the unit base frame and must be at least 4-3/4" (120 mm) wide at the contact YORK INTERNATIONAL...

  • Page 30: Installation Of Vibration Isolators

    1" N.P.T. connection can be obtained On adjustable mounts, transfer the unit weight evenly from YORK as an accessory for the unit. Alternatively to the springs by turning the mount adjusting nuts (lo- a differential pressure switch sited across an orifice plate cated just below the top plate of the mount) counter- may be used, preferably of the high/low limit type.

  • Page 31: Water Treatment

    Aerated, brackish or salt water is not recommended for installed to allow flushing of the pipework system. The use in the water system(s). YORK recommends that a by-pass can be used during maintenance to isolate the water treatment specialist is consulted to determine that heat exchanger without disrupting flow to other units.

  • Page 32: Connection Types & Sizes

    Units are supplied with outlet guards for safety and to danger or cause injury. For indoor installations pres- prevent damage to the fan blades. If these guards are sure relief valves should be piped to the exterior of the removed to fit ductwork, adequate alternative precau- building. YORK INTERNATIONAL...

  • Page 33: Electrical Connection

    In tion (not supplied by YORK). cold weather, this could cause serious damage to the chiller due to evapora- tor freeze-up. Do not remove power...

  • Page 34: Remote Emergency Stop Device

    Terminals 29 and 30 (Figs. 11 and 12, pages 39 and 40) remote offset of EMS% CURRENT LOAD LIMIT. See close to indicate that a system is running. Figs. 11 and 12, pages 39 and 40 for contact location. YORK INTERNATIONAL...

  • Page 35: Power And Control Panel Layouts (Wye-Delta Typical)

    FORM 201.18-NM3 POWER AND CONTROL PANEL LAYOUTS (WYE-DELTA TYPICAL) 00263VIP FIG. 8 – POWER PANEL SECTION YORK INTERNATIONAL...

  • Page 36: Options Panel Layout (Typical)

    Installation OPTIONS PANEL LAYOUT (TYPICAL) 00246VIP FIG. 8 – POWER PANEL SECTION (CONT’D) YORK INTERNATIONAL...

  • Page 37: Logic Section Layout

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

  • Page 38: Logic Section Layout With Control Panel Layout

    Installation LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT 00248VIP FIG. 10 – LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT YORK INTERNATIONAL...

  • Page 39: Customer Connections

    FORM 201.18-NM3 CUSTOMER CONNECTIONS TERMINALS 13-19 TERMINALS 23-38 00249VIP CONNECTION POINTS FOR EMERGENCY STOPS LD03502 FIG. 11 – CUSTOMER CONNECTIONS YORK INTERNATIONAL...
  • Page 40 Installation CUSTOMER CONNECTIONS RELAY BOARDS I/O EXPANSION BOARD TRANSFORMERS POWER SUPPLY BOARD CIRCUIT BREAKERS 28965A CUSTOMER MICROPROCESSOR CONNECTIONS CIRCUIT BOARD 115 VAC SUPPLY (Flow Switch, Alarm, Run, etc.) FIG.12 – CUSTOMER CONNECTIONS YORK INTERNATIONAL...

  • Page 41: Section 5 Commissioning

    Compressor Oil mary tapping has been used: To add oil to a circuit - connect a YORK hand oil pump (Part No. 470-10654-000) to the 1/4" oil charging valve With the supply to the unit isolated remove the lid to on the oil separator piping with a length of clean hose the transformer box.
  • Page 42 ‘Remote Reset Temp’ key. into the control panel correctly using shielded cable. (See Section 6.) There should be a straight run of at least 5 pipe diam- eters on either side of the flow switch. The flow switch YORK INTERNATIONAL...

  • Page 43: First Time Start-Up

    ‘ON’ po- erant is in the system, the bubbles will disappear and sition and restart the unit. be replaced by a solid column of liquid. YORK INTERNATIONAL...

  • Page 44: 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 tempera- tem.

  • Page 45: Section 7 Technical Data

    1.10 1.05 A = Correction Factor B = Mean Temperature through Cooler C = Concentration W/W PROPYLENE GLYCOL Excessive flow, above the max GPM, will damage the evaporator. LD03504 FIG. 14 – GLYCOL CORRECTION FACTORS YORK INTERNATIONAL...

  • Page 46: Temperature And Flows

    1. For leaving brine temperature below 40°F (4.40°C), contact your nearest YORK office for application requirements. 2. For leaving water temperature higher than 55°F (12.8°C) contact the nearest YORK office for application guidelines. 3. The evaporator is protected against freezing to -20°F (-28.8°C) with an electric heater as standard.

  • Page 47: Physical Data (English Units)

    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 1060 1060 1060 Water Connections, inches 1 Optional 300PSIG Waterside available YORK INTERNATIONAL...

  • Page 48: Physical Data (Si Units)

    Maximum Water Side Pressure, Bar Maximum Refrigerant Side Pressure, Bar 20.7 20.7 20.7 20.7 20.7 20.7 20.7 Minimum Chilled Water Flow Rate, l/sec. Maximum Chilled Water Flow Rate, l/sec. Water Connections, inches 1 Optional 21 Bar Waterside available YORK INTERNATIONAL...

  • Page 49: Operating Limitations & Sound Power Data

    ELECTRICAL THREE PHASE 60 Hz (V) ELECTRICAL THREE PHASE 60 Hz (V) * Maximum Ambient w/ High Ambient Kit is 130°F. * Maximum Ambient w/ High Ambient Kit is 54°C. SOUND POWER DATA (PRELIMINARY) MODEL YCAS 0250EC 0270EC 0300EC 0330EC 0360EC 0400EC 0440EC YORK INTERNATIONAL...

  • Page 50: Electrical Data

    2. — — — — — Dashed Line = Field Provided Wiring. 3. The above recommendations are based on the National Electrical Code and using copper connectors only. Field wiring must also comply with local codes. *Group Rated breaker must be HRCR type for cU.L. machines. YORK INTERNATIONAL...
  • Page 51 2/0-500 (2) 3/0-250 15.2 (2) # 2-300 (2) 250-500 1,093 1,093 23.0 0400EC (1)2/0-(2)4/0 (2) 3/0-250 19.0 2/0-500 (2) 3/0-250 15.2 (2)2/0-500 (2) 250-500 1,093 1,093 23.0 0440EC (2) # 2-300 (2) 250-500 19.0 (1)2/0-(2)4/0 (2) 3/0-250 15.2 YORK INTERNATIONAL...

  • Page 52: Optional Single-Point Power Supply Connection And Internal Unit Circuit Breakers

    (4) 4/0-500 0400EC 1000 (3) 2/0-500 (4) 4/0-500 (2) 2/0-500 (3) 2/0-400 1200 1200 1200 (3) 2/0-500 (4) 4/0-500 0440EC 1000 1000 1000 (3) 2/0-500 (4) 4/0-500 (2) 2/0-500 (3 )2/0-400 See page 54 for Electrical Data footnotes. YORK INTERNATIONAL...
  • Page 53 — — 19.0 15.2 — — — 15.2 1,093 1,093 23.0 1,093 1,093 23.0 19.0 19.0 15.2 15.2 1,093 1,093 23.0 1,093 1,093 23.0 19.0 19.0 15.2 15.2 1,093 1,093 23.0 1,093 1,093 23.0 19.0 19.0 15.2 15.2 YORK INTERNATIONAL...

  • Page 54: Electrical Notes

    WYE-DELTA INRUSH LOCKED ROTOR AMPS CONTROL POWER SUPPLY (UNITS WITHOUT STANDARD CONTROL CIRCUIT TRANSFORMER) CONTROL MAX DUAL NON-FUSED NO. OF POWER (MAX LOAD ELEMENT DISCONNECT COMPRESSORS SUPPLY CURRENT) FUSE SIZE SWITCH SIZE 115V-1Ø 3 or 4 115V-1Ø (Non-CE 50/60Hz) (CE 50Hz) 115V-1Ø YORK INTERNATIONAL...

  • Page 55: Compressor Data

    (C5N, C5E, C6N, C6E) VOLTAGE CODE -50 -58 MAX KW 80 105 MAX AMPS 135 118 TABLE 3 – FAN DATA (-46) NOMINALPOWER FULL LOAD AMPS LOCKED ROTOR AMPS FAN TYPE (kW) (FLA) (LRA) STANDARD 1.57 18.0 HIGH PRESSURE 46.3 YORK INTERNATIONAL...

  • Page 56: Elementary Diagram

    Technical Data ELEMENTARY DIAGRAM LD04172A FIG. 15 – ELEMENTARY DIAGRAM – ACROSS-THE-LINE START YORK INTERNATIONAL...

  • Page 57: Elementary Diagram - Across-The-Line Start

    FORM 201.18-NM3 ELEMENTARY DIAGRAM LD04172B FIG. 16 – ELEMENTARY DIAGRAM – ACROSS-THE-LINE START YORK INTERNATIONAL...

  • Page 58: Wiring Diagrams-Across-The-Line Start And Wye-Delta Start (Ycas0250 - Ycas0330)

    (Class 2) Connections. See Note 2 shown, install a cycling device in series with the flow switch (FSLW). See Note 3 for contact rating and wiring Terminal Block for YORK Connections Only specifications. Also refer to cautions on page 63A. Wiring and Components by YORK 5.

  • Page 59: Standard 3 Compressor Power Supplies Wye-Delta Start

    STANDARD 3 COMPRESSOR POWER SUPPLIES WYE-DELTA START (PRESENT ON CERTAIN MODEL CHILLERS) (NOT PRESENT ON 3-COMPRESSOR CHILLERS) (PRESENT ON CERTAIN MODEL CHILLERS) (NOT PRESENT ON 3-COMPRESSOR CHILLERS) LD04174 FIG. 18 – STANDARD 3 COMPRESSOR POWER SUPPLIES - WYE-DELTA START YORK INTERNATIONAL...

  • Page 60: Wiring Diagram Across-The-Line Start

    Technical Data WIRING DIAGRAM ACROSS-THE-LINE START (PRESENT ON CERTAIN MODEL CHILLERS) (NOT PRESENT ON 3-COMPRESSOR CHILLERS) (PRESENT ON CERTAIN MODEL CHILLERS) (NOT PRESENT ON 3-COMPRESSOR CHILLERS) LD04173 FIG. 19 – ELEMENTARY DIAGRAM – ACROSS-THE-LINE START YORK INTERNATIONAL...
  • Page 61 FORM 201.18-NM3 This page intentionally left blank. YORK INTERNATIONAL...

  • Page 62: Standard Compressor Power Supplies

    Technical Data STANDARD COMPRESSOR POWER SUPPLIES ACROSS-THE-LINE START & WYE-DELTA START LD04175 FIG. 20 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 63 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. CAUTION: Control wiring connected to the control panel should never be run in the same conduit with power wiring.
  • Page 64 Technical Data FORM 201.18-NM3 CONNECTION DIAGRAM FIG. 21 – CONNECTION DIAGRAM LD04178 YORK INTERNATIONAL YORK INTERNATIONAL...
  • Page 65 FORM 201.18-NM3 LD04179 YORK INTERNATIONAL...

  • Page 66: Connection Diagram

    Technical Data CONNECTION DIAGRAM Box Information continued from page 67 LD04180 FIG. 21 – CONNECTION DIAGRAM YORK INTERNATIONAL...
  • Page 67 CONNECTION DIAGRAM FIG. 41 & 42 LEGEND (PAGES 90 & 91) Box Information continued from page 66 CONNECTION DIAGRAM ELECTRIC BOX DXST DIRECT DRIVE LD04181 FIG. 22 – CONNECTION DIAGRAM FIG. 23 – CONNECTION DIAGRAM (CONT’D) LD03281 YORK INTERNATIONAL YORK INTERNATIONAL...

  • Page 68: Connection Diagram - Electrical Box

    YCAS0250 - 330, YCAS0693 - 0953 (STYLE F) YCAS0250 - 330, YCAS0693 - 0953 (STYLE F) STANDARD & REMOTE EVAP. UNITS STANDARD & REMOTE EVAP. UNITS FIG. 24 – CONNECTION DIAGRAM FIG. 25 – CONNECTION DIAGRAM YORK INTERNATIONAL YORK INTERNATIONAL...

  • Page 69: Elementary Diagram Dxst Direct Drive Control Circuit

    FORM 201.18-NM3 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04177 FIG. 26 – ELEMENTARY DIAGRAM, DXST DIRECT DRIVE - CONTROL CIRCUIT YORK INTERNATIONAL...
  • Page 70 Technical Data ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04373 FIG. 27 – ELEMENTARY DIAGRAM, DXST DIRECT DRIVE - CONTROL CIRCUIT YORK INTERNATIONAL...
  • Page 71 FORM 201.18-NM3 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT DETAIL "C" SEE INSTALLATION, OPERATION AND MAINTENANCE MANUAL FOR JUMPER OF CONDENSER FANS FOR CHILLER MODEL LD04374 FIG. 28 – ELEMENTARY DIAGRAM, DXST DIRECT DRIVE - CONTROL CIRCUIT YORK INTERNATIONAL...

  • Page 72: Connection Diagram System Wiring

    Technical Data CONNECTION DIAGRAM SYSTEM WIRING STANDARD & REMOTE EVAP. UNITS LD04184 FIG. 29 – CONNECTION DIAGRAM SYSTEM WIRING YORK INTERNATIONAL...
  • Page 73 FORM 201.18-NM3 CONNECTION DIAGRAM SYSTEM WIRING STANDARD & REMOTE EVAP. UNITS LD04185 FIG. 30 – CONNECTION DIAGRAM SYSTEM WIRING YORK INTERNATIONAL...

  • Page 74: Elementary Diagram Dxst Direct Drive Power Circuit

    Technical Data ELEMENTARY DIAGRAM DXST DIRECT DRIVE POWER CIRCUIT FIG. 31 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...
  • Page 75 FORM 201.18-NM3 ELEMENTARY DIAGRAM DXST DIRECT DRIVE POWER CIRCUIT FIG. 32 – ELEMENTARY DIAGRAM YORK INTERNATIONAL...

  • Page 76: Wiring Diagram -Across-The -Line Start And Wye-Delta Start (Ycas0360 - Ycas0440)

    (Class 2) Connections. See Note 2 switching 24VDC. (Gold contacts recommended.) Con- trol Wiring must not be run in the same conduit with any Terminal Block for YORK Connections Only line voltage wiring. Wiring and Components by YORK 4. To cycle unit ON and OFF automatically with contact...

  • Page 77: Standard 4 Compressor Power Supplies Wye-Delta Start

    FORM 201.18-NM3 STANDARD 4 COMPRESSOR POWER SUPPLIES WYE-DELTA START LD04262 FIG. 34 – STANDARD POWER SUPPLY - WYE-DELTA START YORK INTERNATIONAL...

  • Page 78: Standard Compressor Power Supplies - Across-The-Line Start

    Technical Data STANDARD COMPRESSOR POWER SUPPLIES ACROSS-THE-LINE START (YCAS0360 - YCAS0440) LD04261 FIG. 35 – STANDARD POWER SUPPLY - ACROSS-THE-LINE START YORK INTERNATIONAL...
  • Page 79 FORM 201.18-NM3 This page intentionally left blank. YORK INTERNATIONAL...

  • Page 80: Standard Compressor Power Supplies (Ycas0360 - Ycas0440)

    Technical Data STANDARD COMPRESSOR POWER SUPPLIES (YCAS0360 - YCAS0440) ACROSS-THE-LINE START & WYE-DELTA START LD04257 FIG. 36 – STANDARD COMPRESSOR POWER SUPPLIES - ACROSS-THE-LINE START AND WYE-DELTA START YORK INTERNATIONAL...
  • Page 81 FORM 201.18-NM3 FORM 201.18-NM3 LD04258 FIG. 36 – STANDARD COMPRESSOR POWER SUPPLIES - ACROSS-THE-LINE AND WYE-DELTA START (CONT’D) YORK INTERNATIONAL YORK INTERNATIONAL...
  • Page 82 Technical Data FORM 201.18-NM3 This page intentionally left blank. This page intentionally left blank. LD04265 YORK INTERNATIONAL YORK INTERNATIONAL...
  • Page 83 FORM 201.18-NM3 This page intentionally left blank. YORK INTERNATIONAL...

  • Page 84: Connection Diagram Systems 1 & 2

    Technical Data CONNECTION DIAGRAM SYSTEMS 1 & 2 FIG. 37 – CONNECTION DIAGRAM – WYE-DELTA START LD04265 YORK INTERNATIONAL...
  • Page 85 Any contacts connected to flow switch inputs or BAS inputs on terminals 13 - 19 or TB3, or any other terminals, must be sup- pressed with a YORK P/N 031- 00808-000 suppressor across the relay/contactor coil. CAUTION: Control wiring connected to the...
  • Page 86 Technical Data FORM 201.18-NM3 CONNECTION DIAGRAM SYSTEMS 3 & 4 FIG. 38 – CONNECTION DIAGRAM LD04267 YORK INTERNATIONAL YORK INTERNATIONAL...
  • Page 87 FORM 201.18-NM3 LD04268 YORK INTERNATIONAL...

  • Page 88: Connection Diagram - Electrical Box

    Technical Data CONNECTION DIAGRAM – ELECTRICAL BOX YCAS0360 - 0440, YCAS1063 - 1263 (STYLE F) STANDARD & REMOTE EVAP. UNITS FIG. 39 – CONNECTION DIAGRAM SYSTEM WIRING YORK INTERNATIONAL...
  • Page 89 FORM 201.18-NM3 CONNECTION DIAGRAM – ELECTRICAL BOX YCAS0360 - 0440, YCAS1063 - 1263 (STYLE F) STANDARD & REMOTE EVAP. UNITS FIG. 40 – CONNECTION DIAGRAM YORK INTERNATIONAL...

  • Page 90: Elementary Diagram Dxst Direct Drive Control Circuit

    Technical Data ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04177 FIG. 41 – ELEMENTARY DIAGRAM, DXST DIRECT DRIVE - CONTROL CIRCUIT YORK INTERNATIONAL...
  • Page 91 FORM 201.18-NM3 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04695 FIG. 42 – ELEMENTARY DIAGRAM, DXST DIRECT DRIVE - CONTROL CIRCUIT YORK INTERNATIONAL...
  • Page 92 Technical Data ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT DETAIL "C" SEE INSTALLATION, OPERATION AND MAINTENANCE MANUAL FOR NUMBER OF CONDENSER FANS FOR CHILLER MODELS LD04757 FIG. 43 – ELEMENTARY DIAGRAM, DXST DIRECT DRIVE - CONTROL CIRCUIT YORK INTERNATIONAL...

  • Page 93: Connection Diagram System Wiring

    FORM 201.18-NM3 CONNECTION DIAGRAM SYSTEM WIRING STANDARD & REMOTE EVAP. UNITS LD04269 FIG. 44 – CONNECTION DIAGRAM SYSTEM WIRING YORK INTERNATIONAL...
  • Page 94 Technical Data CONNECTION DIAGRAM SYSTEM WIRING STANDARD & REMOTE EVAP. UNITS LD04270 FIG. 45 – CONNECTION DIAGRAM SYSTEM WIRING YORK INTERNATIONAL...

  • Page 95: Compressor Terminal Box - Systems 1- 4

    FORM 201.18-NM3 COMPRESSOR TERMINAL BOX SYSTEMS 1 THROUGH 4 LD04271 FIG. 46 – COMPRESSOR TERMINAL BOX, SYSTEMS 1-4 YORK INTERNATIONAL...

  • Page 96: 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 pressure 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 97 2-1/4" DIA. RIGGING 10" 10" (BOTH SIDES) (BOTH SIDES) WATER INLET WATER INLET HOLES (EACH SIDE) HOLES (EACH SIDE) WATER OUTLET WATER OUTLET 104" 104" 68" 68" 67-7/16" 67-7/16" 89-11/16" 89-11/16" 63-9/16" 63-9/16" 342-1/4" 342-1/4" SIDE VIEW SIDE VIEW LD03966 YORK INTERNATIONAL...

  • Page 98: Ycas 250 - 270 (Si)

    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 99 3670 1066 1023 2438 1981 SYS. #3 SYS. #1 & #2 10" POWER OPENING 10" (4) 57 DIA. RIGGING WATER INLET (BOTH SIDES) WATER OUTLET HOLES (EACH SIDE) 3708 2642 1614 1727 2277 1713 8694 SIDE VIEW LD03970 YORK INTERNATIONAL...

  • Page 100: Ycas 300 - 330 (English)

    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 pressure 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 101 36" 96" 78" 2" SYS. #3 SYS. #1 & #2 10" POWER OPENING 7-1/2" 10" (4) 2-1/4" DIA. RIGGING WATER OUTLET (BOTH SIDES) HOLES (EACH SIDE) WATER INLET 146" 104" 68" 115-7/16" 63-9/16" 89-11/16" 390-1/4" SIDE VIEW LD03982 YORK INTERNATIONAL...

  • Page 102: Ycas 300 - 330 (Si)

    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 103 3982 1065 1051 2438 1981 SYS. #3 SYS. #1 & #2 (4) 57 DIA. RIGGING POWER OPENING 10" 10" HOLES (EACH SIDE) (BOTH SIDES) WATER INLET WATER OUTLET 3708 2642 2277 1727 2932 1614 9913 SIDE VIEW LD03986 YORK INTERNATIONAL...

  • Page 104: Ycas 360 (English)

    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 pressure 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 105 78" 2" SYS. #1 & #2 SYS. #3 & #4 10" 7-1/2" POWER OPENING (4) 2-1/4" DIA. RIGGING WATER INLET (BOTH SIDES) HOLES (EACH SIDE) 10" 262-3/4" 104" WATER OUTLET 68" 89-11/16" 111-9/16" 67-7/16" 438-1/4" SIDE VIEW LD03998 YORK INTERNATIONAL...

  • Page 106: Ycas 360 (Si)

    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 107 YCAS YCAS 0360 5011 1117 0360 5097 1117 1005 2438 1981 (4) 57 DIA. RIGGING 10" POWER OPENING 10" WATER INLET HOLES (EACH SIDE) (BOTH SIDES) WATER OUTLET 2642 6673 1727 2277 1713 2833 11132 SIDE VIEW LD04002 YORK INTERNATIONAL...

  • Page 108: Ycas 400 - 440 (English)

    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 pressure 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 109 44.0" 33.9 2438 1981 SYS. #3 & #4 SYS. #1 & #2 10" POWER OPENING (4) 57 DIA. RIGGING 10" WATER INLET (BOTH SIDES) HOLES (EACH SIDE) WATER OUTLET 2642 7892 2932 1727 2277 2833 12351 SIDE VIEW LD04006 YORK INTERNATIONAL...

  • Page 110: Ycas 400 - 440 (Si)

    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 111 1028 2438 1981 SYS. #3 & #4 SYS. #1 & #2 10" POWER OPENING (4) 57 DIA. RIGGING 10" WATER INLET (BOTH SIDES) HOLES (EACH SIDE) WATER OUTLET 2642 7892 2932 1727 2277 2833 12351 LD04010 SIDE VIEW YORK INTERNATIONAL...

  • Page 112: Clearances

    Technical Data CLEARANCES (2 m) (1.3 m) LD04841 Notes: No obstructions allowed above the unit. Only one adjacent wall may be higher than the unit. Adjacent units should be 10 feet (3 meters) apart. FIG. 55 – CLEARANCES YORK INTERNATIONAL...

  • Page 113: Weight Distribution And Isolator Mounting Positions

    YCAS TOTAL 0250 1066 –– –– –– –– 7,863 0270 1077 –– –– –– –– 7,952 0300 1139 1051 –– –– –– –– 8,571 0330 1158 1052 –– –– –– –– 8,732 0360 10,973 0400 11,596 0440 11,816 YORK INTERNATIONAL...
  • Page 114 Purple CP-2-27 1500 680.4 1.06 26.9 Orange CP-2-28 1800 816.4 1.02 25.9 Green CP-2-31 2200 997.9 0.83 21.0 Gray CP-2-32 2600 1179.3 0.74 18.7 White CP-2-35 3000 1360.8 0.70 17.7 Gold ISOLATOR DETAILS LD01089 FIG. 56 – CP-2-XX YORK INTERNATIONAL...
  • Page 115 (499.4) (158.7) (117.6) (41.4) (69.8) (76.2) (12.7) (127.0) (14.4) (9.6) RD-4 BLACK 1500 (681.0) 2250 (1021.5) 0.25 0.50 * HD dimension applies to double deflection Type RD mountings only. GREEN 3000 (1362.0) (6.3) (12.7) RD-4 GRAY 4000 (1816.0) YORK INTERNATIONAL...
  • Page 116 AWMR-1-553 2200 997.9 AWMR-2-531 2552 1157.6 AWMR-2-532 3000 1360.8 LD02974 LD02973 AWMR-2-XXX AWMR-1-XXX DIMENSIONS - In. 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 FIG. 57 – ISOLATOR DETAILS YORK INTERNATIONAL...
  • Page 117 COPPER FIN COIL WEIGHT DISTRIBUTION BY MODEL (KGS) YCAS TOTAL 0250 1,142 1,027 8,725 0270 1,153 1,028 8,814 0300 1,034 1,022 1,223 1,134 9,576 0330 1,053 1,042 1,242 1,136 9,737 0360 1,030 1,030 12,121 0400 1,080 1,080 12,887 0440 1,082 1,082 13,107 YORK INTERNATIONAL...
  • Page 118 Purple CP-2-27 1500 680.4 1.06 26.9 Orange CP-2-28 1800 816.4 1.02 25.9 Green CP-2-31 2200 997.9 0.83 21.0 Gray CP-2-32 2600 1179.3 0.74 18.7 White CP-2-35 3000 1360.8 0.70 17.7 Gold ISOLATOR DETAILS LD01089 FIG. 58 – CP-2-XX YORK INTERNATIONAL...
  • Page 119 (499.4) (158.7) (117.6) (41.4) (69.8) (76.2) (12.7) (127.0) (14.4) (9.6) RD-4 BLACK 1500 (681.0) 2250 (1021.5) 0.25 0.50 * HD dimension applies to double deflection Type RD mountings only. GREEN 3000 (1362.0) (6.3) (12.7) RD-4 GRAY 4000 (1816.0) YORK INTERNATIONAL...
  • Page 120 AWMR-1-553 2200 997.9 AWMR-2-531 2552 1157.6 AWMR-2-532 3000 1360.8 LD02973 LD02973 AWMR-1-XXX AWMR-2-XXX DIMENSIONS - In. 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 FIG. 59 – ISOLATOR DETAILS YORK INTERNATIONAL...

  • Page 121: Installation Instructions For Vmc Series Awr/Awmr And Cp Restrained Mountings

    1/4" shim ance of 1/8" between resilient washer and under- between the upper load plate and vertical uprights. side of channel cap plate. Lower the equipment on the blocking or shimmed 10. Installation is now complete. isolators. YORK INTERNATIONAL...

  • Page 122: Refrigerant Flow Diagram

    The high pressure oil-free vapor is fed to the air ing takes place before returning to the cooler. cooled condenser coil and fans where the heat is removed. The fully condensed liquid enters the economizer. FIG. 60 – REFRIGERANT FLOW DIAGRAM YORK INTERNATIONAL...

  • Page 123: Process And Instrumentation Diagram

    FORM 201.18-NM3 PROCESS AND INSTRUMENTATION DIAGRAM (Added to some models) LD03486 FIG. 61 – PROCESS AND INSTRUMENTATION DIAGRAM YORK INTERNATIONAL...

  • Page 124: Component Locations - 3 Compressor Units

    HIGH PRESSURE CUT-OUT - STS SUCTION TEMPERATURE SENSOR - RFTS REFRIGERANT FEED TEMPERATURE SENSOR (R407C only) - XCMTB COMPRESSOR MOTOR TERMINAL BOX - YELSSV ECONOMIZER LIQUID SUPPLY SOLENOID VALVE - ZCPR COMPRESSOR LD05021 FIG. 62 – COMPONENT LOCATIONS YORK INTERNATIONAL...

  • Page 125: Component Locations - 4 Compressor Units

    FORM 201.18-NM3 COMPONENT LOCATIONS – 4 COMPRESSOR UNITS LD05024 FIG. 63 – COMPONENT LOCATIONS (CONT’D) YORK INTERNATIONAL...

  • Page 126: Compressor Components

    STATOR LOCKING OIL FILTER BOLT COVER PLATE OIL FILTER BLEED & EVACUATION POINT LIFTING LUG THREADED HOLE HEATER ECONOMIZER GAS IN DISCHARGE CASE DISCHARGE GAS OUT OIL INLET FROM CONDENSER LD03668 CODING COIL FIG. 64 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
  • Page 127 FORM 201.18-NM3 COMPRESSOR COMPONENTS - CONT’D LD03669 FIG. 65 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
  • Page 128 Technical Data COMPRESSOR COMPONENTS - CONT’D LD03670 FIG. 66 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
  • Page 129 FORM 201.18-NM3 COMPRESSOR COMPONENTS - CONT’D LD03671 FIG. 67 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
  • Page 130 Technical Data COMPRESSOR COMPONENTS - CONT’D MOTOR ROTOR / MALE ROTOR LOCKING O-RING MALE ROTOR SLIDE VALVE RELIEF O-RING RETURN VALVE SPRING SUPPORT ECONOMIZER FEMALE ROTOR SLIDE VALVE RINGS PLUG LD03672 FIG. 68 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
  • Page 131 BEARING CLAMP NUT REVERSE THRUST BEARING THRUST SPACER SHIM THRUST BEARINGS SPACER SHIM DISCHARGE RADIAL BEARING LIP SEAL DOWEL PIN SUPPORT RING ECONOMIZER PLUG SUPPORT RING FEMALE ROTOR RETAINING RING FEMALE INLET BEARING LD03673 FIG. 69 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...

  • Page 132: System Startup Checklist

    COMPANY: _______________________________ START-UP DATE : _________________________ If it is necessary to add oil, connect a YORK oil pump to the charging valve on the oil separator, CHILLER MODEL #: _______________________ but do not tighten the flare nut on the delivery tubing.

  • Page 133: Panel Checks

    Board is in the ON position (Top 2 Key on the control panel. Check them off. pins). Damage to the chiller could result if 8. Set the Time and Date. switches are improperly programmed. 9. Program the Daily Schedule start and stop times. YORK INTERNATIONAL...

  • Page 134: Initial Start-Up

    The suction temperature should be taken 6" (13 mm) less than the condensing temperature (The tempera- before the compressor suction service valve, and the ture corresponding to the condensing pressure from suction pressure is taken at the compressor suction ser- the refrigerant temperature/pressure chart). vice valve. YORK INTERNATIONAL...

  • Page 135: Checking Economizer Superheat

    Motor Gas Temp = 90°F (32°C) load and unload to control water temperature, the chiller minus Economizer Press is ready to be placed into operation. 139 PSIG converted to Temp - 78°F (26°C) 12°F (6°C) YORK INTERNATIONAL...

  • Page 136: Section 8 Micropanel Contents

    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 137: Introduction & Physical Description

    Board(s). sunlight. External interface is available for control of the chiller Displays will be updated every two seconds by the mi- via a YORK ISN System or YORK Remote Control croprocessor. Center. In addition, EMS/BAS System connections are YORK INTERNATIONAL...

  • Page 138: 1.3 Unit (Chiller) On / Off Switch

    The battery backup assures that Expansion Board which multiplexes them and then any programmed values (setpoints, clock, cutouts, etc.) feeds them to the Microprocessor Board. are not lost during a power failure or shutdown period regardless of the time involved. YORK INTERNATIONAL...

  • Page 139: 1.6 Circuit Breakers

    One Relay Output Board per system operates the mo- via the I/O Expansion Board allowing the microproces- tor contactors/starters, solenoid valves, and heaters sor to monitor motor currents for low current, high cur- which control system operation. rent, unbalanced current, and single phasing. YORK INTERNATIONAL...

  • Page 140: Transformers

    This allows the micro to tional details on the Motor Protector monitor current and shut a system down if low or high Module can be found on page 16. motor current is sensed. This is a non-adjustable pro- YORK INTERNATIONAL...
  • Page 141 FORM 201.18-NM3 29119A SIDE VIEW 29121A 29121A TOP VIEW TOP VIEW DISPLAY SWITCH PUSHED TO LEFT INDICATES 29120A SIDE VIEW FIG. 70 – MOTOR PROTECTOR YORK INTERNATIONAL...

  • Page 142: Ems/Bas Controls

    Motor Current Key (see Section vice must be suppressed with a sup- 3.5). However, if this display is being pressor YORK Part Number 031- viewed when the reset pulse occurs, the 00808-000 (60Hz models) or a stan- setpoint will not change on the display.
  • Page 143 30 seconds from the end of the last PWM signal, but must be refreshed pressed with a suppressor YORK Part before 30 minutes has elapsed. After 30 minutes, if no Number 031-00808-000 (60Hz models)

  • Page 144: 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. 71 – COMPONENT LAYOUT YORK INTERNATIONAL...

  • Page 145: Logic Section Layout

    Microprocessor Board Back of Keypad I/O Expansion Board # 2 I/O Expansion Board # 1 Power Supply Board Relay Output Board #1 Relay Output Board #2 Flow Switch & Customer Connection Terminals (TB4) FIG. 72 – LOGIC SECTION LAYOUT YORK INTERNATIONAL...

  • Page 146: Anti-Recycle Timer

    150 °F (66°C) and will turn on when the discharge tem- tem or if power is lost to the control panel. The internal perature is equal to or less than 150 °F (66°C). contacts are normally open (N.O.) and will close when YORK INTERNATIONAL...

  • Page 147: Run Status (Chiller)

    MANUAL Lead/Lag selection will be automatically cal equipment) and the alarm circuit overridden by the micro to allow the lag compressor to should fail to function, YORK will not automatically become the lead anytime the selected lead be liable for damages.

  • Page 148: Status Key: General Status Messages And Fault Warnings

    R U N N I N G amples of each display. In each example “#” is used as This message indicates that the respective compressor applicable to represent the system number where mes- is running due to demand. sages apply to individual systems. YORK INTERNATIONAL...

  • Page 149: Unit Warnings

    S Y S P U M P I N G D O W N Permissive message will be displayed and the indicated S Y S P U M P I N G D O W N system will not run. YORK INTERNATIONAL...

  • Page 150: Anticipation Control Status Messages

    For the first 3 minutes that the saturated suction tem- safety thresholds. This avoids total loss of cooling perature is at or below 29°F (-2°C) any further compres- resulting from a lockout by a safety control. YORK INTERNATIONAL...

  • Page 151: Unit Fault Status Messages

    Closure of the flow switch(es) is monitored to check fault will clear when ambient temperature rises 2°F that flow is present in the evaporator when a compres- (1°C) above the cut-out. sor is running. Any external cycling devices fitted by YORK INTERNATIONAL...

  • Page 152: System Fault (Safety) Status Messages

    This safety is activated after 3 minutes of operation. while manually allowing repetitive re- Oil pressure must be less than 65 PSID (4.4 bar) for starts may cause further expensive R22 models as long as the compressor continues to damage to the system. run. YORK INTERNATIONAL...
  • Page 153 After 225 seconds of operation with suction pressure perature is above 225°F (107°C) for more than 3 sec- operating above the cut-out, a 30 second transient timer onds, the compressor will shut down. prevents short term fluctuations in suction pressure due YORK INTERNATIONAL...
  • Page 154 Auto restart will not occur since compressor operation. The system will be shut down if manual reset is required. A fault lockout will automati- average motor current exceeds 115% FLA. cally occur after the micro attempts 2 more starts with YORK INTERNATIONAL...

  • Page 155: Printout On Fault Shutdown

    330 PSIG (23 bar) and the cutout con- occur with the corresponding auto- tacts close. A fault lockout will result if safety thresh- matic printout. This is not a cause for olds are exceeded three times in a 90 minute period. concern. YORK INTERNATIONAL...

  • Page 156: Display Keys & Option Switches

    M C H L T 4 3 . 8 ° indicate the actual values are greater than or less than the values which are being displayed, but are outside the ability of the micro to give an actual reading. This YORK INTERNATIONAL...

  • Page 157: System # Data Keys

    MOTOR CURRENT KEY solenoid in the form of a current signal. To the micro- processor, STEP 0 = fully unloaded and STEP 75 = Pressing the Motor Current key displays compressor fully loaded. current for each system: YORK INTERNATIONAL...

  • Page 158: Operating Hrs / Start Counter Key

    20 to 70 PSIG (1 to 5 bar) for R-22 models and 5 to 70 PSIG (0.3 to 5 bar) for R-407c models. The Options key provides a display of options which are programmed by the positions of the S1 Dip Switches YORK INTERNATIONAL...
  • Page 159 The R-22 Mode MUST be selected for models using LD03511A refrigerant type R-22. Incorrect selection of this switch FIG. 74 – ENLARGED PHOTOGRAPH OF DIP may cause serious damage to the chiller. SWITCHES ON MICROPROCESSOR BOARD YORK INTERNATIONAL...

  • Page 160: Function Key

    Control Control sage. Refrigerant R-407C Refrigerant R-22 Spare Spare The following keys can be scrolled using the Function Spare Spare Key: Chilled Liquid Temps, System # Data, Motor Spare Spare Current and Options. Spare Spare Spare Spare YORK INTERNATIONAL...

  • Page 161: Print Keys

    “rate control” printer. As the data is transmitted it is erased from the and “temperature deviation from setpoint” to determine memory. when loading should occur. YORK INTERNATIONAL...

  • Page 162: Operating Data - Remote Printout

    The follow text shows a typical example printout ob- CUR/TEMP – EMS PWM Current Limiting & tained by pressing the Operating Data key with an op- Temperature Reset Enabled tional printer attached. In this case an example is shown YORK INTERNATIONAL...
  • Page 163 YCAS 4 System models provide similar printouts SYSTEM 2 DATA for the appropriate number of systems: COMPRESSORS STATUS RUN TIME 0- 0-15-26 D-H-M-S MOTOR CURRENT 104 AMPS 87 %FLA YORK INTERNATIONAL CORPORATION SUCTION PRESSURE 57 PSIG MILLENNIUM SCREW CHILLER DISCHARGE PRESSURE 233 PSIG OIL PRESSURE...

  • Page 164: History Key

    This message displays the suction pressure cut-out pro- grammed at the time of the fault. S H U T D O W N O C C U R R E D 5 : 5 9 A M N O V YORK INTERNATIONAL...
  • Page 165 This message shows the Run Time logged on the sys- tem since the last compressor start, in Days (D), Hours (H), Minutes (M), and Seconds (S). YORK INTERNATIONAL...
  • Page 166 System 3 data before looping back to the start of the Safety Shutdown display. This message, which is only displayed if the unit is in R-407c mode, indicates the refrigerant temperature at the inlet of the cooler. YORK INTERNATIONAL...

  • Page 167: Fault History Data - Remote Printout

    4 compressor models will be similar. COMPRESSOR HEATER WYE-DELTA RELAY An example of the HISTORY Printout is shown below: SYSTEM 2 DATA YORK INTERNATIONAL CORPORATION COMPRESSORS STATUS RUN TIME 0- 0-15-26 D-H-M-S MILLENNIUM SCREW CHILLER MOTOR CURRENT 104 AMPS 87 %FLA...

  • Page 168: Entry Keys

    “AM” or “PM” on the display. For ex- ample, pressing the â key when the cursor is on “PM” the original values will be returned. changes it to “AM.” YORK INTERNATIONAL...

  • Page 169: Setpoints Keys & Chilled Liquid Control

    (+ or - Range) This deviation temperature error and the rate of change to determine is simply called the “Control Range” and is best de- the amount of loading necessary to cool the chilled liq- YORK INTERNATIONAL...
  • Page 170 Load Timers are always set at 10 seconds first. between changes. On 4 compressor chillers, loading will operate the same Unload timers are set at 5 seconds between as a 3 compressor chiller with another compressor added changes. YORK INTERNATIONAL...
  • Page 171 2°F below the low limit of the Steps. Under these circumstances, the two systems will Control Range (CR), b) if chilled liq- not appear to equalize loading. uid temperature drops more than CR/ 2 below the low limit of the Control Range. YORK INTERNATIONAL...

  • Page 172: Local Cooling Setpoints Key

    10°F (or 10°C). Press the ENTER Key to memory. store the new value in memory. After pressing the Enter key, the display will continue to show the message until another key is pressed. YORK INTERNATIONAL...

  • Page 173: Clock Keys

    Press ENTER to move on to the hour part of the display. Next, key in the time (hours/minutes) using a leading “0” ing the Set Time key a second time enters “display” mode in which the cursor will disappear and the “live” clock will be displayed. YORK INTERNATIONAL...

  • Page 174: Set Schedule / Holiday Key

    ON position, all 00.00s should be programmed into quirements are occur only the daily schedule. This can be done manually for indi- occasionally. vidual days or for all days by pressing Cancel and En- ter for the Monday Start/Stop schedule. YORK INTERNATIONAL...

  • Page 175: Manual Override Key

    Daily Schedule. Once activated, Manual Override is Section 2.5. only active for a period of 30 minutes and the follow- ing status message will be observed. M A N U A L O V E R R I D E YORK INTERNATIONAL...

  • Page 176: Program Key

    Enter key the first 5 seconds of operation after which if the cut- is pressed and the display will scroll on to the next pro- out point is exceeded for 3 seconds, the system will grammable value. shut down. YORK INTERNATIONAL...
  • Page 177 5 - 70 PSIG (0.3 bar) for tion at low refrigerant suction pressure. R22 and R-407c models. In this mode, the cutout should YORK INTERNATIONAL...
  • Page 178 Values below 25°F (-4°C) can be sor, if current draw approaches the maximum limit cut- used for applications requiring chiller operation at YORK INTERNATIONAL...
  • Page 179 Al- though the minimum setting allowed on this timer will Manual lead/lag. The ENTER key must be pressed to avoid excessive heat build up, adjusting the timer for save the selection in memory. YORK INTERNATIONAL...

  • Page 180: Programming "Default" Values

    PROGRAM key followed by the ENTER key, to Leaving Chilled Liquid Temp Cut-Out 36°F (2°C) program the “refrigerant type.” Press the Program key Suction Pressure Cut-Out 44 PSIG (3 bar) again, key in the numbers “6140”, then press Enter. As YORK INTERNATIONAL...

  • Page 181: Compressor Condenser Fan Control

    13, 15, 17, 19 >290 PSIG <220 PSIG & <85°F 21M, 22M, 23M, 24M 330, 331, 332 8, 9, 10 * Newer versions of EPROMs will have ON and OFF pressures 15 PSIG below the published values shown above. YORK INTERNATIONAL...
  • Page 182 15M, 16M, 17M, 18M, 19M 230, 231, 232 10, 14, 15 SYSTEM 3 IS ALWAYS EQUIPPED WITH 4 FANS. * Newer versions of EPROMs will have ON and OFF pressures 15 PSIG below the published values shown above. YORK INTERNATIONAL...

  • Page 183: Compressor Condenser Fan Control

    14, 16, 18, 20 >290 PSIG <220 PSIG & <85°F 27M, 28M, 29M, 30M 430, 431, 432 8, 9, 10 * Newer versions of EPROMs will have ON and OFF pressures 15 PSIG below the published values shown above. YORK INTERNATIONAL...
  • Page 184 9, 10 14, 16, 18 >290 PSIG <220 PSIG & <85°F 27M, 28M, 29M 430, 431, 432 8, 9, 10 * Newer versions of EPROMs will have ON and OFF pressures 15 PSIG below the published values shown above. YORK INTERNATIONAL...

  • Page 185: Section 9 Maintenance

    LOAD’ for approximately half an hour. The oil level YORK shall not be liable for costs incurred to return should be about half way up the upper of the two sight the unit to satisfactory condition.

  • Page 186: Compressor Unit Operation

    YORK Order No. ________________________ CHILLER/COMPRESSOR Compr. Ser. No. _________________________ Operating Log Unit Ser. No. ___________________________ Refrigerant ____________________________ Date Time Hour Meter Reading Equipment Room Temp./Outdoor Temp. Suction Pressure Suction Temperature Suction Superheat Discharge Pressure Actual Discharge Temperature Oil Pressure Oil Temperature...

  • Page 187: Maintenance Requirements

    * Reserved for customer use for any special site determined requirements. This procedure must be performed at the specified time interval by an Industry Certified Technician who has been trained and qualified to work on this type of YORK equipment. A record of this procedure being successfully carried out must be maintained on file by the equipment owner should proof of adequate maintenance be...

  • Page 188: General Periodic Maintenance Checks Standard Units

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

  • Page 189: Section 10 Spare Parts

    BMLT 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 190: Section 11 Troubleshooting

    Check that the compressor unloads correctly. Measured temperature is incorrect. Check sensor calibration, location and wiring. Chiller FAULT: VAC Check mains supply is stable and within allowable UNDERVOLTAGE Poor mains supply voltage. limits. displayed. Check for voltage dip on compressor start. YORK INTERNATIONAL...
  • Page 191 Check operation of economizer and motor cooling TEV’s and liquid solenoid valve. SYS # CURR LIMITING High compressor motor current has Check if liquid temperature is within operating limits. displayed activated unloading. Check if ambient air temperature is above operating (Compressor current limits. unloading.) YORK INTERNATIONAL...

  • Page 192: Sensor Calibration Charts

    System 4: ............. I/O Board # 2 J7 - 11/3 Discharge Pressure: System 1: ............Micro-board J15-8/3 System 2: ............Micro-board J15-7/1 System 3: ............. I/O Board # 2 J4 - 12/8 System 4: ............. I/O Board # 2 J7 - 12/8 YORK INTERNATIONAL...

  • Page 193: Limited Warranty Applied Systems

    Subject has been received by YORK. to the exclusions listed below, YORK, at its option, will repair or replace, FOB point of shipment, such YORK ALL WARRANTIES AND GUARANTEES ARE VOID IF: products or components as it finds defective.

  • Page 194: Temperature Conversion Chart

    186.8 22.07 16.5 239.3 100.0 190.4 22.76 246.5 102.2 23.45 17.5 253.8 104.4 197.6 24.14 106.7 201.2 24.83 18.5 268.3 108.9 204.8 25.52 275.5 111.1 208.4 26.21 19.5 282.8 113.3 26.9 115.6 215.6 27.59 20.5 297.3 117.8 219.2 YORK INTERNATIONAL...
  • Page 195 FORM 201.18-NM3 This page intentionally left blank. YORK INTERNATIONAL...
  • Page 196 Proud Sponsor of the 2000 U.S. Olympic Team 36USC380 P.O. Box 1592, York, Pennsylvania USA 17405-1592 (717) 771-7890 Subject to change without notice. Printed in USA Copyright © by York International Corporation 2000 www.york.com ALL RIGHTS RESERVED Form 201.18-NM3 (300)

This manual is also suitable for:

Millennium ycas seriesMillennium ycas 270Millennium ycas 330Millennium ycas 300Millennium ycas 360Millennium ycas 400 ... Show all

Table of Contents