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Table of Contents
Related Manuals for York MILLENIUM YCAS Series
Summary of Contents for York MILLENIUM YCAS Series
- Page 1 ® MILLENNIUM AIR-COOLED SCREW LIQUID CHILLERS INSTALLATION, OPERATION & MAINTENANCE New Release Form 201.18-NM6 (800) MILLENNIUM ® YCAS AIR-COOLED SCREW LIQUID CHILLERS YCAS0283 through YCAS0343 00397VIP(R) YCAS 2 SYSTEM EPROM 031-01798-001 (STANDARD, BRINE & METRIC MODELS COMBINED)
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Page 2: Table Of Contents
Connection Types & Sizes ........30 Setpoints ............... 21 Cooler Connections ..........30 Clock ..............21 Option Flanges ............30 Print ............... 21 Refrigerant Relief Valve Piping ......30 Program ..............21 Ductwork Connection ..........30 Accessories and Options ........21 YORK INTERNATIONAL... - Page 3 Checking Subcooling and Superheat ..... 95 Shutdown ..............42 Checking Economizer Superheat ......96 Leak Checking ............96 SECTION TECHNICAL DATA Flow Rate and Pressure Drop Charts ..... 43 Glycol Correction Factors ........43 Temperature and Flows ........... 44 YORK INTERNATIONAL...
- Page 4 4. PRINT KEYS ............................122 General ........................122 Oper Data Key ......................122 Operating Data – Local Display Messages ............122 Operating Data – Remote Printout .................123 History Key ......................125 Fault History Data – Local Display Messages ............125 Fault History Data – Remote Printout ..............128 YORK INTERNATIONAL...
- Page 5 SPARE PARTS ....................... 150 Recommended Spares ..........................150 Recommended Compressor Oils ......................150 Associated Drawings ..........................150 SECTION TROUBLESHOOTING ....................151 Competent Persons Troubleshooting Guide ..................151 Sensor Calibration Charts ........................153 Limited Warranty Applied Systems ...................... 154 Temperature Conversion Chart ......................155 YORK INTERNATIONAL...
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Page 6: Section 1 General Chiller Information & Safety
Center. See Commissioning, page 39. 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 150. -
Page 7: Responsibility For Safety
This manual and any other document supplied with the The unit must be grounded. No installation or mainte unit, are the property of YORK which reserves all rights. nance work should be attempted on the electrical equip- They may not be reproduced, in whole or in part, with-... -
Page 8: Rotating Parts
Refrigerants and oils used in the unit are generally non- 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. are, however, recommended when working on 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. 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.
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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- cient, corrosion resistant copper tubes arranged in stag- LD03674 FIG. 2 – SCREW COMPRESSOR YORK INTERNATIONAL... -
Page 14: Economizer
35°C (95°F) ambient,13°C The oil (YORK “L” oil – a POE oil used for all refrig- (55°F) RWT, 7°C (44°F) LWT. Subcooling will drop to erant applications), which drains back into the com- approximately 0°C below 32°C (90°F) ambient. -
Page 15: Oil Cooling
The panel enclosures are de- automatic reset after power failure, automatic system signed to IP55 and are manufactured from powder optimization to match operating conditions. painted galvanized steel. YORK INTERNATIONAL... -
Page 16: Motor Current Protection
Since the micro is sending a run signal to the contactor, ergizing. Power must be removed and reapplied to re- it senses the low motor current below 10% FLA and set the module. shuts the system down. YORK INTERNATIONAL... -
Page 17: Current Overload
“Operating Current.” A current imbalance exceeding an unloaded level of 25% will result in the motor pilot circuit being It is recommended that an YORK Ser- de-energized. vice Technician or the YORK factory... -
Page 18: Motor Protector Dip Switch Settings
TABLE 1 – MOTOR PROTECTOR DIP SWITCH SETTING YCAS STYLE F, ACROSS-THE-LINE START – 50 HZ 100% MOTOR PROTECTOR CHILLER MP OL MODEL VOLT LEADS NAMEPLATE VALUE CODE DIP SWITCH SETTINGS ON MP (“1” INDICATED ON) SYS. PHASE 0283 0303 0323 0343 YORK INTERNATIONAL... - Page 19 TABLE 1 – MOTOR PROTECTOR DIP SWITCH SETTING (CONT’D) YCAS STYLE F, WYE-DELTA START – 50 HZ 100% MOTOR PROTECTOR CHILLER MP OL MODEL VOLT LEADS NAMEPLATE VALUE CODE DIP SWITCH SETTINGS ON MP (“1” INDICATED ON) SYS. PHASE 0283 0303 0323 0343 YORK INTERNATIONAL...
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Page 20: Motor Starting
1TR (SYS 1) or 2TR (SYS 2) contacts de- energizes 1S/2S and closes the normally closed 1S (SYS 1) or 2S (SYS 2) contacts, energizing motor contactor 2M (SYS 1) or 4M (SYS 2), completing the “DELTA” connection of the motor. YORK INTERNATIONAL... -
Page 21: Entry
BAS. blocks, non-fused disconnect switches or circuit break- ers with lockable external handles located in the two A YORK ISN Building Automation System can pro- power compartments. vide a Pulse Width Modulated (PWM) signal direct to... -
Page 22: Dx Cooler Options
1.0 g accelerated force Star-Delta Compressor Motor Starter – Provides in all directions to 51 mm (2"). Level adjustable, deflec- approximately 65% reduced inrush current compared tion may vary slightly by application. (Field-mounted.) to across-the-line start. (Factory-mounted.) YORK INTERNATIONAL... -
Page 23: Unit Nomenclature And Nameplate Engineering Data
1 2 3 4 5 6 7 8 11 12 13 14 15 BASE PRODUCT TYPE NOMINAL CAPACITY UNIT DESIGNATOR REFRIGERANT VOLTAGE/STARTER DESIGN/DEVELOPMENT LEVEL :Design Series F : YORK Tons High Efficiency :380/415/3/50 :R-22 0090 :Engineering : Chiller Change : Air Cooled 0100... -
Page 24: Options Section Of Part Number
OPTIONS SECTION OF PART NUMBER 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3637 POWER FIELD CONTROLS FIELD COMPRESSOR / PIPING FIELD : MP NF Disconnect Switches : No Option : MP Supply w/ Ind. -
Page 25: 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 26: Unit Rigging
Handling and Storage UNIT RIGGING 88" (2250mm) CORRECT! WRONG! LD03514 FIG. 3 – UNIT RIGGING WRONG! CORRECT! LD03515 FIG. 4 – LIFTING LUGS YORK INTERNATIONAL... -
Page 27: 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 120 mm (4-3/4") wide at the contact YORK INTERNATIONAL... -
Page 28: 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 29: Water Treatment
Aerated, brackish or salt water is not recommended for heat exchanger without disrupting flow to other units. use in the water system(s). YORK recommends that a Thermometer and pressure gauge connections should water treatment specialist is consulted to determine that... -
Page 30: Pipework Arrangement
Where cross winds may occur, any ductwork must be vessel body. supported to prevent side loading on the unit. YORK INTERNATIONAL... -
Page 31: Electrical Connection
This will prevent recircu- tion (not supplied by YORK). lation of air when only one of the fans is running. Units are supplied with outlet guards for safety and to prevent damage to the fan blades. -
Page 32: Remote Emergency Stop Device
This contact can remote offset of EMS% CURRENT LOAD LIMIT. See be used as a master start/stop for the pump in conjunc- Figs. 12 and 13, pages 37 and 38 for contact location. tion with the daily start/stop schedule. YORK INTERNATIONAL... -
Page 33: Power And Control Panel Layouts (Wye-Delta Typical)
FORM 201.18-NM6 POWER AND CONTROL PANEL LAYOUTS (WYE-DELTA TYPICAL) 00263VIP FIG. 8 – POWER PANEL SECTION YORK INTERNATIONAL... -
Page 34: Options Panel Layout (Typical)
Installation OPTIONS PANEL LAYOUT (TYPICAL) 00246VIP FIG. 9 – OPTION PANEL SECTION YORK INTERNATIONAL... -
Page 35: 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 & Customer Connection Terminals Circuit Breakers FIG. 10 – LOGIC SECTION LAYOUT YORK INTERNATIONAL... -
Page 36: Logic Section Layout With Control Panel Layout
Installation LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT 00248VIP FIG. 11 – LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT YORK INTERNATIONAL... -
Page 37: Customer Connections
System No. 1 Alarm Contacts System No. 2 Run Current Chilled Liquid Circulating Pump Start Temperature System No. 2 Print Alarm Contacts Chiller Run CONNECTION Isolator POINTS FOR Auxiliary EMERGENCY Interlock STOPS LD03502 FIG. 12 – CUSTOMER CONNECTIONS YORK INTERNATIONAL... - Page 38 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. 13 – CUSTOMER CONNECTIONS YORK INTERNATIONAL...
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Page 39: 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 or the transformer box. - Page 40 ‘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...
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Page 41: First Time Start-Up
‘ON’ position and restart the unit. erant is in the system, the bubbles will disappear and be replaced by a solid column of liquid. YORK INTERNATIONAL... -
Page 42: 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 43: Section 7 Technical Data
1.10 1.05 ˚C A = Correction Factor B = Mean Temperature through Cooler C = Concentration W/W PROPYLENE GLYCOL Excessive flow, above the max l/s, will damage the evaporator. ˚C LD03504 FIG. 15 – GLYCOL CORRECTION FACTORS YORK INTERNATIONAL... -
Page 44: Temperature And Flows
1. For leaving brine temperature below 4.40°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 45: Physical Data (Si Units)
Water Volume, liters Maximum Water Side Pressure, Bar Maximum Refrigerant Side Pressure, Bar Minimum Chilled Water Flow Rate, l/sec. Maximum Chilled Water Flow Rate, l/sec. 37.9 37.9 37.9 37.9 Water Connections, inches 1 Optional 21 bar Waterside available YORK INTERNATIONAL... -
Page 46: Operating Limitations & Sound Power Data
HIGH PRESS. FANS OPTION 1 PRESSURE (Pa) HIGH PRESS. FANS OPTION 2 SLOW SPEED FANS ELECTRICAL THREE PHASE 50 Hz (V) * Maximum Ambient w/ High Ambient Kit is 54°C. SOUND POWER DATA (PRELIMINARY) MODEL YCAS 0283EC 0303EC 0323EC 0343EC YORK INTERNATIONAL... - Page 47 FORM 201.18-NM6 This page intentionally left blank. YORK INTERNATIONAL...
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Page 48: Electrical Data
# 18 - # 2 #14 - 250 #14 - 250 17.1 0323 # 2 - 4/0 #14 - 250 #14 - 250 17.1 0343 # 2 - 4/0 #14 - 250 #14 - 250 17.1 See page 56 for Electrical Notes. YORK INTERNATIONAL... - Page 49 # 14 - 250 # 14 - 250 17.1 0323 # 18 - # 2 # 14 - 250 # 14 - 250 17.1 0343 # 18 - # 2 # 14 - 250 # 14 - 250 17.1 YORK INTERNATIONAL...
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Page 50: Optional Single-Point Power Supply Connection And Individual System Circuit Breakers
# 2 - 4/0 # 14 - 250 0303 # 2 - 4/0 # 14 - 250 0323 # 2 - 300 # 14 - 250 0343 # 2 - 300 # 4 - 300 See page 56 for Electrical Notes. YORK INTERNATIONAL... - Page 51 Fan Data 11,12 Volts YCAS Y-LRA X-LRA Qty. Y-LRA X-LRA Qty. (Ea.) (Ea.) (Ea.) (Ea.) 0283 68.0 17.1 68.0 175.0 17.1 0303 71.0 17.1 71.0 175.0 17.1 0323 98.0 17.1 71.0 175.0 17.1 0343 105.0 17.1 71.0 175.0 17.1 YORK INTERNATIONAL...
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Page 52: Optional Single-Point Power Supply Connection With Field Supplied Circuit Protection
Min. Max. Disc. Switch 0283 #2 - 4/0 #14 - 250 0303 #2 - 4/0 #14 - 250 0323 #2 - 300 #14 - 250 0343 #2 - 300 #4 - 300 See page 56 for Electrical Notes. YORK INTERNATIONAL... - Page 53 SYSTEM #2 Model Compressor Data Fan Data Compressor Data Fan Data 11, 12 11,12 Volts YCAS Y-LRA X-LRA Qty. Y-LRA X-LRA Qty. (Ea.) (Ea.) (Ea.) (Ea.) 0283 17.1 17.1 0303 17.1 17.1 0323 17.1 17.1 0343 17.1 17.1 YORK INTERNATIONAL...
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Page 54: Connection To Factory Circuit Breaker
# 14 - 250 71.0 17.1 71.0 17.1 0323 # 14 - 250 98.0 17.1 71.0 17.1 0343 # 14 - 250 105.0 17.1 71.0 17.1 NOTES: Wye-Delta Compressor Start not available with this option.See page 56 for Electrical Notes. YORK INTERNATIONAL... -
Page 55: Compressor Data
(C5N, C5E, C6N, C6E) VOLTAGE CODE MAX kW 80 105 MAX AMPS 135 118 TABLE 3 – FAN DATA (-46) NOMINAL POWER FULL LOAD AMPS LOCKED ROTOR AMPS FAN TYPE (kW) (FLA) (LRA) STANDARD 1.57 18.0 HIGH PRESSURE 46.3 YORK INTERNATIONAL... -
Page 56: Electrical Notes
12. FLA for “Low Noise Fan” motors: 200V = 8.0A, 230V = 7.8A, 380V = 4.4A, 460V = 3.6A, 575V = 2.9A, 380V/50 Hz = 4.1A. 13. Group Rated breaker must be HACR type for cU.L. Machines. YORK INTERNATIONAL... -
Page 57: Wiring Diagram Across-The-Line Start
6A at 115 volts A.C. 115-1-50/60 20A 250V 30A 240V W/O TRANS 5. Contacts are rated at 115V, 100VA, resistive load only, and must be suppressed at load by user. FIG. 16 – WIRING DIAGRAM – ACROSS-THE-LINE START YORK INTERNATIONAL... - Page 58 Technical Data WIRING DIAGRAM ACROSS-THE-LINE START LD06015 FIG. 17 – WIRING DIAGRAM – ACROSS-THE-LINE START YORK INTERNATIONAL...
- Page 59 FORM 201.18-NM6 This page intentionally left blank. YORK INTERNATIONAL...
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Page 60: Elementary Diagram - Across-The-Line Start
Technical Data ELEMENTARY DIAGRAM FIG. 18 – ELEMENTARY DIAGRAM – ACROSS-THE-LINE START YORK INTERNATIONAL... - Page 61 Alarm cir- cuitry, or pilot relays for pump starters wired through motor contactor auxiliary contact must be suppressed with YORK P/N 031-00808-000 sup- pressor across the relay/ contactor coil. Any contacts connected to flow switch inputs or BAS...
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Page 62: Wiring Diagram Wye-Delta Start
6A at 115 volts A.C. 115-1-50/60 20A 250V 30A 240V W/O TRANS 5. Contacts are rated at 115V, 100VA, resistive load only, and must be suppressed at load by user. FIG. 19 – WIRING DIAGRAM – WYE-DELTA START YORK INTERNATIONAL... - Page 63 FORM 201.18-NM6 WIRING DIAGRAM WYE-DELTA START LD06015 YORK INTERNATIONAL...
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Page 64: Elementary Diagram - Wye-Delta Start
Technical Data Technical Data Technical Data ELEMENTARY DIAGRAM ELEMENTARY DIAGRAM FIG. 20 – ELEMENTARY DIAGRAM – WYE-DELTA START YORK INTERNATIONAL... - Page 65 Alarm cir- cuitry, or pilot relays for pump starters wired through motor contactor auxiliary contact must be suppressed with YORK P/N 031-00808-000 sup- pressor across the relay/ contactor coil. Any contacts connected to flow switch inputs or BAS...
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Page 66: Panel Component Locations
Technical Data PANEL COMPONENT LOCATIONS LD06017 FIG. 21A – CONTROL PANEL COMPONENT LOCATIONS YORK INTERNATIONAL... - Page 67 Please note that the System 1 and System 2 Power Panels are located on the left and right side (respectively) of the Control Panel. They have been shown separately from the Control Panel in order to make the drawings large enough to be readable. FIG. 21B – POWER PANEL COMPONENT LOCATIONS YORK INTERNATIONAL...
- Page 68 Technical Data LEGEND 0283 - 0343 LD06179 YORK INTERNATIONAL...
- Page 69 FORM 201.18-NM6 LD05957 YORK INTERNATIONAL...
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Page 70: Connection Diagram
Technical Data CONNECTION DIAGRAM (SYSTEM WIRING) LD06019 YORK INTERNATIONAL... -
Page 71: Compressor Terminal Box
FORM 201.18-NM6 COMPRESSOR TERMINAL BOX LD06020 YORK INTERNATIONAL... -
Page 72: 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 73 0323 71.32 43.05 34.54 0323 72.23 43.14 37.34 0343 71.42 42.97 34.41 0343 73.32 43.06 37.21 2438 SYS.#1 SYS.#2 1772 8" 8" WATER OUTLET WATER INLET (2) 57 DIA. 2108 RIGGING HOLES 2705 (EACH SIDE) 3524 3755 LD05207 YORK INTERNATIONAL...
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Page 74: Clearances
(1.3 m) (2 m) LD05903 Notes: 1. No obstructions allowed above the unit. 2. Only one adjacent wall may be higher than the unit. 3. Adjacent units should be 10 feet (3 meters) apart. FIG. 22 – CLEARANCES YORK INTERNATIONAL... -
Page 75: Weight Distribution And Isolator Mounting Positions
POWER ELEMENTS FOR SYS. 2 25 1/2" 1 1/4" 19 9/16" 55 13/16" 54 3/8" ORIGIN VIEW D-D LD04475 ALUMINUM & BLACK FIN COIL WEIGHT DISTRIBUTION BY MODEL (KGS) YCAS TOTAL 3,426 0283 3,475 0303 3,880 0323 3,905 0343 YORK INTERNATIONAL... - Page 76 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. 23 – CP-2-XX YORK INTERNATIONAL...
- Page 77 (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 78 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. 24 – ISOLATOR DETAILS YORK INTERNATIONAL...
- Page 79 31" POWER ELEMENTS FOR SYS. 2 25 1/2" 1 1/4" 19 9/16" 55 13/16" 54 3/8" ORIGIN VIEW D-D LD04475 COPPER FIN COIL WEIGHT DISTRIBUTION BY MODEL (KGS) YCAS TOTAL 3,802 0283 3,851 0303 4,310 0323 4,335 0343 YORK INTERNATIONAL...
- Page 80 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. 25 – CP-2-XX YORK INTERNATIONAL...
- Page 81 (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 82 AWMR-1-553 2200 997.9 AWMR-2-531 2552 1157.6 AWMR-2-532 3000 1360.8 LD02973 LD02974 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. 26 – ISOLATOR DETAILS YORK INTERNATIONAL...
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Page 83: 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 84: 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. 27 – REFRIGERANT FLOW DIAGRAM YORK INTERNATIONAL... -
Page 85: Process And Instrumentation Diagram
FORM 201.18-NM6 PROCESS AND INSTRUMENTATION DIAGRAM (Added to some models) LD03486 FIG. 28 – PROCESS AND INSTRUMENTATION DIAGRAM YORK INTERNATIONAL... -
Page 86: Component Locations
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 LD05909 FIG. 29 – COMPONENT LOCATIONS YORK INTERNATIONAL... -
Page 87: 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 CODING COIL LD03668 FIG. 30 – COMPRESSOR COMPONENTS YORK INTERNATIONAL... - Page 88 Technical Data COMPRESSOR COMPONENTS – CONT’D LD03669 FIG. 31 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
- Page 89 FORM 201.18-NM6 COMPRESSOR COMPONENTS – CONT’D LD03670 FIG. 32 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
- Page 90 Technical Data COMPRESSOR COMPONENTS – CONT’D LD06231 LD06232 FIG. 33 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
- Page 91 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. 34 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
- Page 92 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. 35 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
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Page 93: System Startup Checklist
SALES ORDER #: _________________________ and below the top of the upper sight glass. LOCATION: _______________________________ If it is necessary to add oil, connect a YORK oil SOLD BY: ________________________________ pump to the charging valve on the oil separator, INSTALLING... -
Page 94: Panel Checks
7. Assure that the CLK jumper J18 on the Micro- processor Board is in the ON position (Top 2 pins). 8. Set the Time and Date. Dip switches 4 through 8 are spares 9. Program the Daily Schedule start and stop times. and have no function. YORK INTERNATIONAL... -
Page 95: Initial Start-Up
8°C (15°F) suction pressure is taken at the compressor suction ser- less than the condensing temperature (The tempera- vice valve. ture corresponding to the condensing pressure from the refrigerant temperature/pressure chart). YORK INTERNATIONAL... -
Page 96: Checking Economizer Superheat
Motor Gas Temp = 32°C (90°F) load and unload to control water temperature, the chiller minus Economizer Press is ready to be placed into operation. 139 PSIG converted to Temp 26°C (- 78°F) 6°C (12°F) YORK INTERNATIONAL... -
Page 97: Section 8 Micro Panel 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 98: Introduction & Physical Description
Board(s). Displays will be updated every two seconds by the mi- External interface is available for control of the chiller croprocessor. via a YORK ISN System or YORK Remote Control Center. In addition, EMS/BAS System connections are YORK INTERNATIONAL... -
Page 99: 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 100: 1.6 Circuit Breakers
• CB2 allows removal of control power from respec- 4T: Supplies power to the Motor Protector Modules. tive System 2 for control system circuitry servicing. Specifically, the 115VAC feed to Relay Output Board 2 which energizes contactors and solenoids. YORK INTERNATIONAL... -
Page 101: Motor Protection Modules
These switches are set at the fac- motor or compressor failure. Addi- tory according to motor specifications. tional details on the Motor Protection Module can be found on page 16. YORK INTERNATIONAL... - Page 102 Micro Panel Contents 29119A SIDE VIEW 29121A 29121A TOP VIEW TOP VIEW DISPLAY SWITCH PUSHED TO LEFT INDICATES 29120A SIDE VIEW FIG. 36– MOTOR PROTECTION MODULE YORK INTERNATIONAL...
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Page 103: 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, 00808-000 across the inductive coil. the setpoint will not change on the dis- play. - Page 104 Reset Temp = 66°C/sec 10 sec cable. If an inductive device (relay, contactor) is supplying these contacts, = 6°C (12°F) the coil of the device must be suppressed with a suppressor YORK Part Number 031-00808-000 across the inductive coil. YORK INTERNATIONAL...
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Page 105: 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. 37 – COMPONENT LAYOUT YORK INTERNATIONAL... -
Page 106: Logic Section Layout
50 HZ MODEL LOGIC SECTION ITEM DESCRIPTION Microprocessor Board Back of Keypad I/O Expansion Board # 1 Power Supply Board Relay Output Board #1 Relay Output Board #2 Flow Switch & Customer Connection Terminals (TB4) FIG. 38 – LOGIC SECTION LAYOUT YORK INTERNATIONAL... -
Page 107: Anti-Recycle Timer
66°C (150 °F) 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 66°C (150 °F). contacts are normally open (N.O.) and will close when YORK INTERNATIONAL... -
Page 108: Run Status (Chiller)
This is true regardless of cal equipment) and the alarm circuit whether the lag compressor is ON or OFF. should fail to function, YORK will not be liable for damages. MANUAL Lead/Lag selection will be automatically overridden by the micro to allow the lag compressor to 1.20... -
Page 109: Status Key: General Status Messages And Fault Warnings
S Y S C O M P R U N N I N G sages apply to individual systems. This message indicates that the respective compressor is running due to demand. YORK INTERNATIONAL... -
Page 110: Unit Warnings
Logic Section(s) of the control panel(s) is/are quire a MANUAL OVERRIDE restart, if a power fail- open. Whenever the contact(s) is /are open, the No Run ure occurs. Permissive message will be displayed and the indicated system will not run. YORK INTERNATIONAL... -
Page 111: Anticipation Control Status Messages
Saturated suction tempera- Anticipation controls are built into the software to ture is computed by the micro by converting suction pres- prevent safety shutdowns by automatically overriding sure to temperature. the temperature controls, if system conditions approach YORK INTERNATIONAL... -
Page 112: Unit Fault Status Messages
Closure of the flow switch(es) is monitored to check Low Ambient Temperature Cutout [page 139]). The that flow is present in the evaporator when a compres- fault will clear when ambient temperature rises 1°C (2°F) above the cut-out. YORK INTERNATIONAL... -
Page 113: System Fault (Safety) Status Messages
Failure to repair the cause of the fault Oil pressure must be less than 4.4 bar (65 PSID) for R- while manually allowing repetitive re- 22 models as long as the compressor continues to run. starts may cause further expensive damage to the system. YORK INTERNATIONAL... - Page 114 After 225 seconds of operation with suction pressure perature is above 107°C (225°F) 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 115 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...
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Page 116: Printout On Fault Shutdown
23 bar (330 PSIG) 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 117: Display Keys & Option Switches
M C H L T 6 . 6 ° 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 118: System # Data Keys
Slide Valve Position is computed based on the number of loading steps that the micro has sent to the slide valve solenoid in the form of a current signal. To the micro- processor, STEP 0 = fully unloaded and STEP 75 = fully loaded. YORK INTERNATIONAL... -
Page 119: Motor Current Key
Cut-Out can be programmed from -13 to 2°C (8 to 36° F) and the Suction Pressure Cut-Out programmed from 1 to 5 bar (20 to 70 PSIG) for R-22 models and 0.3 to 5 bar (5 to 70 PSIG) for R-407c models. YORK INTERNATIONAL... - Page 120 The R-22 Mode MUST be selected for models using LD03511A refrigerant type R-22. Incorrect selection of this switch FIG. 40 – ENLARGED PHOTOGRAPH OF DIP may cause serious damage to the chiller. SWITCHES ON MICROPROCESSOR BOARD YORK INTERNATIONAL...
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Page 121: 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 Cur- Spare Spare rent and Options. Spare Spare Spare Spare YORK INTERNATIONAL... -
Page 122: Print Keys
Timer and the Unload Timer. These Timers constantly printer. As the data is transmitted it is erased from the recycle and are used in conjunction with “rate control” memory. and “temperature deviation from setpoint” to determine when loading should occur. YORK INTERNATIONAL... -
Page 123: Operating Data - Remote Printout
In this case an example is shown for a YCAS 2 System Chiller. PWM CURR – EMS PWM Current Limiting Enabled PWM TEMP – EMS PWM Temp. Reset Enabled CUR/TEMP – EMS PWM Current Limiting & Temperature Reset Enabled YORK INTERNATIONAL... - Page 124 Micro Panel Contents YORK INTERNATIONAL CORPORATION SYSTEM 2 DATA MILLENNIUM SCREW CHILLER COMPRESSORS STATUS UNIT STATUS RUN TIME 0- 0-15-26 D-H-M-S 2:04PM 10 OCT 98 MOTOR CURRENT 104 AMPS 87 %FLA SUCTION PRESSURE 57 PSIG SYS 1 NO COOLING LOAD...
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Page 125: History Key
S H U T D O W N O C C U R R E D This message displays the suction pressure cut-out pro- 5 : 5 9 A M N O V grammed at the time of the fault. YORK INTERNATIONAL... - Page 126 ON or OFF at the time of the fault. the time of the fault. A mixed water sensor may be present when multi-unit sequencing is utilized. If no mixed water temperature sensor is installed, the dis- play will not appear. YORK INTERNATIONAL...
- Page 127 D S C H = 5 3 . 9 ° C D S C H S H E A T 4 . 6 ° C This message indicate compressor discharge gas satu- ration temperature and superheat at the time of the fault. YORK INTERNATIONAL...
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Page 128: Fault History Data - Remote Printout
6 faults. CONDENSER FAN STAGE COMPRESSOR HEATER WYE-DELTA RELAY An example of the HISTORY Printout is shown below: SYSTEM 2 DATA YORK INTERNATIONAL CORPORATION COMPRESSORS STATUS MILLENNIUM SCREW CHILLER RUN TIME 0- 0-15-26 D-H-M-S MOTOR CURRENT 104 AMPS 87 %FLA... -
Page 129: Entry Keys
“AM” or “PM” on the display. For ex- ample, pressing the # key when the cursor is on “PM” this is not done, the new values entered will be lost and the original values will be returned. changes it to “AM.” YORK INTERNATIONAL... -
Page 130: 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 131 Load Timers the lowest slide valve step until the leaving chilled liq- Fixed timers are set to minimize undershoot and over- uid is satisfied. shoot as a result of slide valve control. YORK INTERNATIONAL...
- Page 132 Whenever temperature is below the Setpoint, unload- Range. ing pulses will be sent to open the unloading port on the control solenoid to relieve oil pressure on the slide valve on the compressor with the highest slide valve YORK INTERNATIONAL...
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Page 133: Local Cooling Setpoints Key
10°C (or 10°F). 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 134: Clock Keys
Press- 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 135: 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 136: 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 137: 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 138 0.3 - 4.8 BARG (5 - 70 tion at low refrigerant suction pressure. PSIG) for R-22 and R-407c models. In this mode, the YORK INTERNATIONAL...
- Page 139 The Motor Current Unload point is used to avoid a high motor current safety shutdown by unloading a compres- become operational. Values below -4°C (25°F) can be sor, if current draw approaches the maximum limit cut- used for applications requiring chiller operation at lower YORK INTERNATIONAL...
- Page 140 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...
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Page 141: Programming "Default" Values
Leaving Chilled Liquid Temp Cut-Out 2°C (36°F) the PROGRAM key followed by the ENTER key, to Suction Pressure Cut-Out R-22 3 Bar (44 PSIG) program the “refrigerant type.” Press the Program key again, key in the numbers “6140”, then press Enter. As YORK INTERNATIONAL... -
Page 142: Condenser Fan Control
17.2 BARG in an DP and OAT. Fan staging will be decreased from the highest effort to quickly control the discharge pressure to an fan stage reached if both the DP and OAT requirements acceptable range. YORK INTERNATIONAL... - Page 143 10, 14 2, 4, 6 >19.0 BARG <14.1 BARG & <29.4°C 15M, 16M, 17M 230, 231, 232 10, 14, 15 * Sys 1 Outputs are on Relay Board #1 Sys 2 Outputs are on Relay Output Board #2 YORK INTERNATIONAL...
- Page 144 TURN OFF CONTINUE CONTROL LOAD / UNLOAD NEXT FAN DP < 150 TIMER = 5 SEC TIMER = 15 MIN STAGE CONTINUE LD06011 FIG. 42 – CONDENSER FAN CONTROL (EPROM VERSIONS C.A32.09.02 (0483), C.ACS.09.02 (087E), AND C.A06.09.03 (EI0C) YORK INTERNATIONAL...
- Page 145 10, 14 1, 3, 5 >19.7 BARG <9.3 BARG & <29.4°F 9M, 10M, 11M 130, 131, 132 10, 14, 15 * Sys 1 Outputs are on Relay Board #1 Sys 2 Outputs are on Relay Output Board #2 YORK INTERNATIONAL...
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Page 146: 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 147: 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 148: 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 149: 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 cutout functions Check low oil pressure function. Check pump-down function. Check load / unload function. YORK INTERNATIONAL... -
Page 150: 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 151: 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 152 Check operation of economizer and motor cooling TEVs 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...
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Page 153: Sensor Calibration Charts
Test Point ............Micro-board J11-9/3 Suction Pressure: System 1: ............Micro-board J13-7/1 System 2: ............Micro-board J14-7/1 Oil Pressure: System 1: ............Micro-board J13-8/3 System 2: ............Micro-board J14-8/3 Discharge Pressure: System 1: ............Micro-board J15-8/3 System 2: ............Micro-board J15-7/1 YORK INTERNATIONAL... -
Page 154: 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 155: Temperature Conversion Chart
97.8 16.5 239.3 22.07 190.4 100.0 246.5 22.76 102.2 17.5 253.8 23.45 197.6 104.4 24.14 201.2 106.7 18.5 268.3 24.83 204.8 108.9 275.5 25.52 208.4 111.1 19.5 282.8 26.21 113.3 26.9 215.6 115.6 20.5 297.3 27.59 219.2 117.8 YORK INTERNATIONAL... - Page 156 Proud Sponsor of the 2000 U.S. Olympic Team 36USC380 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 2000 www.york.com ALL RIGHTS RESERVED Form 201.18-NM6 (800)