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Related Manuals for York eco2 YCAS0425EB
Summary of Contents for York eco2 YCAS0425EB
- Page 1 AIR-COOLED SCREW LIQUID CHILLERS INSTALLATION, OPERATION, MAINTENANCE New Release Form 201.18-NM8 (701) Better ecology, Better economy. YCAS AIR-COOLED SCREW LIQUID CHILLER YCAS0425EB – YCAS0605EB 28971AR 50 Hz 031-01798-001 YCAS 2-SYSTEM With EPROM (Standard, Brine & Metric Models Combined)
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Page 2: Table Of Contents
System Inputs ............................34 SECTION COMMISSIONING Preparation ............................41 Preparation – Power Off ........................41 First Time Start-up ..........................43 SECTION OPERATION General Description ..........................44 Start-up ............................44 Normal Running and Cycling ........................ 44 Shutdown ............................44 YORK INTERNATIONAL... - Page 3 Ancillary Circuit Boards ......................102 Circuit Breakers ........................103 Current Transformers (C.T.) ....................103 Transformers ......................... 103 Motor Protector Modules ....................... 103 1.10 EMS / BAS Connections ....................... 105 1.11 Microprocessor Board Layout ....................107 1.12 Logic Section Layout ......................108 YORK INTERNATIONAL...
- Page 4 Set Schedule / Holiday Key ....................137 Manual Override Key ......................138 8. PROGRAM KEY ..........................139 General ..........................139 Program Key – User Programmable Values ................ 139 Programming “Default” Values ....................143 Condenser Fan Control ......................144 YORK INTERNATIONAL...
- Page 5 TABLE 2 - Condenser Fan Control and Fan Contactor Data for DXST Units with 4 Fans System ..144 TABLE 3 - Condenser Fan Control and Fan Contactor Data for DXST Units with 5 Fans System ..144 YORK INTERNATIONAL...
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Page 6: General Safety Guidelines
NOT be installed inside the micro panel. NO external wiring is allowed to be run through the micro panel. All wiring must be in accordance with YORK’s published specifications and must be performed ONLY by qualified YORK personnel. YORK will not be responsible for damages/problems resulting from improper connections to the controls or application of improper control signals. -
Page 7: Changeability Of This Document
If there is any question in the mind While YORK makes no commitment to update or pro- of operating/service personnel as to the applicability vide current information automatically to the manual... -
Page 8: Section 1 General Chiller Information & Safety
Center. See Commissioning, page 41. This manual and the Microprocessor Operating Instruc- tions contain all the information required for correct • Only genuine YORK-approved spare parts, oils and installation and commissioning of the unit, together refrigerants must be used. Recommendations on with operating and maintenance instructions. -
Page 9: Responsibility For Safety
This manual, and any other document supplied with the unit, are the property of YORK which reserves all Electrical rights. They may not be reproduced, in whole or in part, The unit must be grounded. No installation or mainte-... -
Page 10: Emergency Shutdown
When operated, each removes the electrical cial safety hazards. Use of gloves and safety glasses supply from the control system, thus shutting down the unit. are, however, recommended when working on the unit. YORK INTERNATIONAL... -
Page 11: Material Safety Data
Non-flammable at atmospheric conditions. data 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 protective equipment fire conditions. YORK INTERNATIONAL... - Page 12 General Chiller Information & Safety MATERIAL SAFETY DATA REFRIGERANT OIL DATA: YORK “L” OIL SAFETY DATA Classification Non-hazardous In contact with skin Minimally irritating. No first aid necessary. Exercise reasonable personal cleanliness includ- ing cleansing exposed skin areas several times daily with soap and water. Launder soiled work clothes at least weekly.
- Page 13 FORM 201.18-NM8 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. The product contains no known carcinogens. No special warning labels are required under OSHA 29 CFR 1910.1200.
- Page 14 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...
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Page 15: Section 2 Product Description
FIG. 1 – COMPONENT LOCATIONS INTRODUCTION All exposed power wiring is be routed through liquid- tight, non-metallic conduit. YORK YCAS eco chillers are designed for water or water-glycol cooling. All units are designed to be lo- General Description cated outside on the roof of a building or at ground The Air-Cooled Screw Chiller utilizes many compo- level. -
Page 16: Fig. 2 - Screw Compressor
They have a design working pressure of 31 bar 00485VIP (450 PSIG). FIG. 2 – SCREW COMPRESSOR YORK INTERNATIONAL... - Page 17 The oil (YORK “L” oil – a POE oil used for all refrig- erant applications), which drains back into the com- pressor through a replaceable 0.5 - 3.0 micron oil filter, The automatic spring return of the capacity control valve and oil supply solenoid, is at high pressure.
- Page 18 The 7-segment dis- lems that could cause excessive motor current. This play will display either a stationary or a flashing alpha- is accomplished by sending 3-phase current signals numeric value which can be decoded by the operator. YORK INTERNATIONAL...
- Page 19 Motor off or unloaded < 5A AC current level.(Running) High current fault. Loaded phase to phase current imbalance > 17%. It is recommended that an YORK Ser- Unloaded phase to phase current vice Technician or the YORK factory imbalance > 25%. be consulted before changing these Improper incoming phase rotation.
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Page 20: Table 1 - Motor Protector Dip Switch Settings
LEADS NAMEPLATE MP OL CODE DIP SWITCH SETTINGS ON MP (“1” INDICATED ON) VALUE YCAS PHASE 0425 0475 SYS 1 0475 SYS 2 0515 0555 SYS 1 0555 SYS 2 0605 * Indicates one lead/phase through motor protector. YORK INTERNATIONAL... -
Page 21: Motor Starting
The standard display language is English, with 4 other deenergizes 1S/2S and closes the normally closed 1S (SYS languages available. 1) or 2S (SYS 2) contacts, energizing motor contactor 2M (SYS 1) or 4M (SYS 2), completing the “DELTA” con- nection of the motor. YORK INTERNATIONAL... -
Page 22: Accessories And Options
YORK ISN or building automation system. mounted control circuit transformer. The supply with appropriate branch circuit protection in accordance with... -
Page 23: Dx Cooler Options
1.0 g accelerated force in all directions to 51 mm (2"). Level adjustable, Wire enclosure – Heavy gauge welded wire mesh deflection may vary slightly by application. (Field- guards mounted on the exterior of the unit (Factory- or mounted). field-mounted). YORK INTERNATIONAL... -
Page 24: Unit Nomenclature Nameplate Engineering Data
Product Description UNIT NOMENCLATURE NAMEPLATE ENGINEERING DATA YORK INTERNATIONAL... - Page 25 FORM 201.18-NM8 UNIT NOMENCLATURE NAMEPLATE ENGINEERING DATA YORK INTERNATIONAL...
- Page 26 Product Description This page intentionally left blank. YORK INTERNATIONAL...
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Page 27: Section 3 Handling And Storage
Sales Order. Major damage must be reported immediately to your If the unit is to be put into storage, prior to installation, local YORK representative. the following precautions should be observed: MOVING THE CHILLER • Ensure that all openings, such as water connections, Prior to moving the unit, ensure that the installation site are securely capped. -
Page 28: Fig. 3 - Unit Rigging
Handling & Storage UNIT RIGGING 88" (2250mm) CORRECT! WRONG! LD03514 FIG. 3 – UNIT RIGGING WRONG! CORRECT! LD03515 FIG. 4 – LIFTING LUGS YORK INTERNATIONAL... -
Page 29: Installation
If the enclosure is of louvered construc- least 120 mm (4-3/4") wide at the contact points. This tion the same requirement of static pressure loss ap- will allow vibration isolators to be fitted if required. plies as for ducts and attenuators stated above. YORK INTERNATIONAL... -
Page 30: Installation Of Vibration Isolators
1" N.P.T. connection can be obtained Technical Data Section, identify each mount and its cor- from YORK as an accessory for the unit. Alternatively, rect location on the unit. a differential pressure switch sited across an orifice plate may be used, preferably of the high / low limit type. -
Page 31: Water Treatment
Aerated, brackish or salt water is not recommended for all low and high points in the pipework to permit drain- use in the water system(s). YORK recommends that a age of the system and to vent any air in the pipes. -
Page 32: Connection Types & Sizes
Where cross winds may occur, any ductwork must be It is recommended that a piece of pipe is fitted to each supported to prevent side loading on the unit. valve and directed so that when the valve is activated the YORK INTERNATIONAL... -
Page 33: Electrical Connection
This will prevent recir- tion (not supplied by YORK). culation 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 34: Volts Free Contacts
RS-232 port. override the customer master start / stop so that the YORK contact can start the pump in the event of a low Remote Set Point Offset – Temperature temperature liquid condition. -
Page 35: Fig. 8 - Panel Layouts
FORM 201.18-NM8 POWER AND CONTROL PANEL LAYOUTS (WYE-DELTA TYPICAL) 00263VIP FIG. 8 – PANEL LAYOUTS YORK INTERNATIONAL... -
Page 36: Fig. 9 - Option Panel Section
Installation OPTION PANEL LAYOUT (TYPICAL) 00246VIP FIG. 9 – OPTION PANEL SECTION YORK INTERNATIONAL... -
Page 37: Fig. 10 - 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 38: Fig. 11 - Logic Section Layout With Control Panel
Installation LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT 00248VIP FIG. 11 – LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT YORK INTERNATIONAL... -
Page 39: Fig. 12 - 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 40: Fig. 13 - Customer Connections
Installation CUSTOMER CONNECTIONS RELAY BOARDS I/O EXPANSION BOARD TRANSFORMERS POWER SUPPLY BOARD CIRCUIT BREAKERS 28965A CUSTOMER MICROPROCESSOR CONNECTIONS CIRCUIT BOARD 115VAC SUPPLY (Flow Switch, Alarm, Run, etc.) FIG. 13 – CUSTOMER CONNECTIONS YORK INTERNATIONAL... -
Page 41: Commissioning
Compressor Oil Verify that the site voltage supply corresponds to the To add oil to a circuit – connect a YORK hand oil pump unit requirement and is within the limits given in the (Part No. 470-10654-000) to the 6 mm (1/4") oil charg- Technical Data Section. - Page 42 Technical Data Section. Operation grammed by pressing the ‘Remote Reset Temp’ key. outside of these limits is undesirable and could cause (See Section 6.) damage. YORK INTERNATIONAL...
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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: 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: Temperatures And Flows
1. For leaving brine temperature below 4.4°C, contact your nearest YORK office for application requirements. 2. For leaving water temperature higher than 13°C, contact the nearest YORK office for application guidelines. 3. The evaporator is protected against freeze-up to -28.8°C with an electrical heater as standard. -
Page 46: Glycol Correction Factors
1.15 1.10 1.05 A = Correction Factor ˚C B = Mean Temperature through Cooler C = Concentration W/W PROPYLENE GLYCOL Excessive flow, above the max GPM, will damage the evaporator. ˚C LD03504 FIG. 15 – GLYCOL CORRECTION FACTORS YORK INTERNATIONAL... -
Page 47: Physical 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 52°C. SOUND POWER DATA (PRELIMINARY) MODEL YCAS 0425EB 0475EB 0515EB 0555EB 0575EB 0605EB YORK INTERNATIONAL... -
Page 48: Refrigerant
Maximum Refrigerant Side Pressure, bar Minimum Chilled Water Flow Rate, l/s 9.53 10.60 11.67 12.37 13.06 13.63 Maximum Chilled Water Flow Rate, l/s 37.85 42.27 46.87 48.45 48.45 48.45 Water Connections, inches NOTE: 1. Optional 21 bar Waterside available. YORK INTERNATIONAL... - Page 49 FORM 201.18-NM8 This page intentionally left blank. YORK INTERNATIONAL...
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Page 50: Electrical Data
(2) # 2 - 300 (2) 3/0-250 0555EB (2) # 1 - 500 (3) 2/0-400 0575EB (2) # 1 - 500 (3) 2/0-400 0605EB (2) # 1 - 500 (3) 2/0-400 See page 55 for Electrical Data footnotes. YORK INTERNATIONAL... - Page 51 690.0 23.0 0515EB 148.0 267.0 857.0 23.0 148.0 267.0 857.0 23.0 0555EB 188.0 267.0 857.0 23.0 148.0 267.0 857.0 23.0 0575EB 188.0 267.0 857.0 23.0 188.0 267.0 857.0 23.0 0605EB 173.0 267.0 857.0 23.0 173.0 267.0 857.0 23.0 YORK INTERNATIONAL...
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Page 52: Optional Single-Point Power Supply Connection - 2 Compressor Units
(3) 2/0-400 188.0 857.0 23.0 857.0 23.0 0575EB (3) 2/0-400 188.0 857.0 23.0 857.0 23.0 0605EB (3) 2/0-400 173.0 857.0 23.0 857.0 23.0 Option NOT available for units with CE mark. See page 55 for Electrical Data footnotes. YORK INTERNATIONAL... - Page 53 SYSTEM #1 SYSTEM #2 CHILLER 11, 12 11,12 COMPRESSOR DATA FAN DATA COMPRESSOR DATA FAN DATA MODEL X-LRA X-LRA YCAS 0425EB 23.0 23.0 0475EB 23.0 23.0 0515EB 23.0 23.0 0555EB 23.0 23.0 0575EB 23.0 23.0 0605EB 23.0 23.0 YORK INTERNATIONAL...
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Page 54: Control Power Supply
492 428 259 214 193 171 492 428 259 214 193 171 338 294 178 147 135 FAN DATA NOMINAL POWER FULL LOAD AMPS LOCKED ROTOR AMPS FAN TYPE (kW) (FLA) (LRA) STANDARD 1, 57 4, 4 18, 0 HIGH PRESSURE 3, 7 6, 8 46, 3 YORK INTERNATIONAL... -
Page 55: Electrical Notes & Legend
MINIMUM CIRCUIT AMPACITY MINIMUM MIN NF MINIMUM NON-FUSED RUNNING LOAD AMPS S.P. WIRE SINGLE-POINT WIRING UNIT MTD SERV SW UNIT-MOUNTED SERVICE (NON-FUSED DISCONNECT SWITCH) WYE-DELTA WYE-DELTA START XLRA ACROSS-THE-LINE INRUSH LOCKED ROTOR AMPS YLRA WYE-DELTA INRUSH LOCKED ROTOR AMPS YORK INTERNATIONAL... -
Page 56: Power Connection Options
“Optional Field Provided 115-1Ø MicroPanel Supply Suitable for: Y-∆ ∆ ∆ ∆ ∆ Start and Across-The-Line Start SEE NOTE 2 See page 57 for notes. LD05555 FIG. 17 – OPTIONAL SINGLE-POINT POWER SUPPLY CONNECTION WITH INDIVIDUAL SYSTEM CIRCUIT BREAKERS YORK INTERNATIONAL... -
Page 57: Optional Single-Point Power Supply Connection With Field Supplied Circuit Protection
1. – – – – – – – Dashed Line indicates Field Provided Wiring. 2. The above recommendations are based on the National Electrical Code and using copper conductors only. Field wiring must also comply with local codes. YORK INTERNATIONAL... -
Page 58: Wiring Diagrams
Transient Voltage Suppression Terminal Block for Customer Connections Terminal Block for Customer Low Voltage (Class 2) Connections. See Note 2 Terminal Block for YORK Connections Only Wiring and Components by YORK Optional Equipment Wiring and/or Components by Others FIG. 20 – ELEMENTARY DIAGRAM – ACROSS-THE-LINE START... - Page 59 FORM 201.18-NM8 WIRING DIAGRAM ACROSS-THE-LINE START FIG. 20 – CONTINUED LD06967 YORK INTERNATIONAL...
- Page 60 Technical Data ELEMENTARY DIAGRAM FIG. 20 – CONTINUED YORK INTERNATIONAL...
- Page 61 Alarm cir- cuitry, or pilot relays for pump starters wired through motor contactor auxiliary contacts must be suppressed with YORK P/N 031-00808-000 suppressor across the relay/contactor coil. Any contacts connected to flow switch inputs or BAS inputs on ter-...
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Page 62: Fig. 21 - Power Panel (Front Inside View)
Technical Data FIG. 21 – POWER PANEL (FRONT INSIDE VIEW) – ACROSS-THE-LINE START YORK INTERNATIONAL... -
Page 63: Fig. 22 - Electronic Panel (Front Inside View)
FORM 201.18-NM8 LD03280 FIG. 22 – ELECTRONIC PANEL (FRONT INSIDE VIEW) – ACROSS-THE-LINE START YORK INTERNATIONAL... -
Page 64: Fig. 23 - Elementary Diagram: Wye-Delta Start
Transient Voltage Suppression Terminal Block for Customer Connections Terminal Block for Customer Low Voltage (Class 2) Connections. See Note 2 Terminal Block for YORK Connections Only Wiring and Components by YORK Optional Equipment Wiring and/or Components by Others FIG. 23 – ELEMENTARY DIAGRAM – WYE-DELTA START... - Page 65 FORM 201.18-NM8 WIRING DIAGRAM WYE-DELTA START FIG. 23 – CONT’D LD03229 YORK INTERNATIONAL...
- Page 66 Technical Data ELEMENTARY DIAGRAM FIG. 23 – CONTINUED YORK INTERNATIONAL...
- Page 67 Alarm cir- cuitry, or pilot relays for pump starters wired through motor contactor auxiliary contacts must be suppressed with YORK P/N 031- 00808-000 suppressor across the relay/contactor coil. Any contacts connected to flow switch inputs or BAS inputs on ter-...
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Page 68: Fig. 24 - Power Panel (Front Inside View)
Technical Data FIG. 24 – POWER PANEL (FRONT INSIDE VIEW) - WYE-DELTA START YORK INTERNATIONAL... -
Page 69: Fig. 25 - Electronic Panel (Front Inside View)
FORM 201.18-NM8 LD03280 FIG. 25 – ELECTRONIC PANEL (FRONT INSIDE VIEW) – WYE-DELTA START YORK INTERNATIONAL... -
Page 70: Fig. 26 - Connection Diagram
Technical Data LEGEND – FIGS. 20 THROUGH 25 CONNECTION DIAGRAM ELECTRIC BOX DXST DIRECT DRIVE FIG. 26 – CONNECTION DIAGRAM LD03281 YORK INTERNATIONAL... -
Page 71: Fig. 27 - Detail "A
FORM 201.18-NM8 LD03282 LD03283 LD03284 FIG. 27 – DETAIL “A” YORK INTERNATIONAL... -
Page 72: Fig. 28 - Connection Diagram System Wiring
Technical Data CONNECTION DIAGRAM (SYSTEM WIRING) LD03230 FIG. 28 – CONNECTION DIAGRAM SYSTEM WIRING LD03231 FIG. 29 – SENSOR CONNECTION FIG. 30 – COMPRESSORS (SYSTEMS 1 & 2) LD03232 YORK INTERNATIONAL... -
Page 73: Fig. 31 - Compressor Terminal Boxes
FORM 201.18-NM8 COMPRESSOR TERMINAL BOX LD03233 FIG. 31 – COMPRESSOR TERMINAL BOXES YORK INTERNATIONAL... -
Page 74: Fig. 32 - Detail "B
Technical Data LD03285 FIG. 32 – DETAIL “B” YORK INTERNATIONAL... -
Page 75: Fig. 33 - Detail "C
FORM 201.18-NM8 #3/#4 #5/#6 #7/#8 #3/#4 #5/#6 #7/#8 #9/#10 LD06841 FIG 33 – DETAIL “C” YORK INTERNATIONAL... -
Page 76: Dimensions
Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators. - Page 77 0555 2799 1096 0555 2821 1098 0575 2792 1100 0575 2814 1102 2438 1981 SYS.#1 SYS.#2 POWER OPENING 8" 8" (BOTH SIDES) WATER INLET WATER OUTLET (2) 57 DIA. RIGGING HOLES (EACH SIDE) 1624 3419 2989 5718 LD04708 YORK INTERNATIONAL...
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Page 78: Ycas0605Eb
Site restrictions may compromise minimum clearances indicated below, resulting in unpre- dictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pres- sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators. - Page 79 CENTER OF GRAVITY (Copper) YCAS YCAS 0605 3137 1102 0605 3191 1104 2438 1981 SYS.#1 SYS.#2 POWER OPENING 8" 8" (3) 57 DIA. RIGGING (BOTH SIDES) WATER INLET WATER OUTLET HOLES (EACH SIDE) 1624 3419 2184 1900 6937 LD04704 YORK INTERNATIONAL...
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Page 80: Operating Weights - Aluminum & Black Fin Coils
— — — — YCAS0575 -1-551 -1-532 -1-532 -1-532 -1-551 -1-551 -1-532 -1-532 — — — — — — — — YCAS0605 -1-552 -1-552 -1-551 -1-532 -1-553 -1-552 -1-551 -1-532 — — — — — — — — YORK INTERNATIONAL... -
Page 81: Operating Weights - Copper Fin Coils & Perimeter Sound Enclosure
— — — — YCAS0575 -1-551 -1-551 -1-551 -1-551 -1-552 -1-551 -1-551 -1-551 — — — — — — — — YCAS0605 -1-553 -1-552 -1-552 -1-551 -1-553 -1-553 -1-552 -1-551 — — — — — — — — YORK INTERNATIONAL... -
Page 82: Installation Instructions For Vmc Series Awr/Awmr And Cp Restrained Mountings
1/4" shim be- ance of 1/8" between resilient washer and under- tween 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 83: Isolator Details
63.5 12.7 104.8 14.4 R-3 or RD-3 (5.5") (3.375") (2.875") (2.5") (0.5") (4.125") (0.563") (0.25") 158.7 117.6 69.8 76.2 12.7 127.0 14.4 R-4 or RD-4 (6.25") (4.625") (2.75") (3.0") (0.5") (5.0") (0.563") (0.375") FIG. 34 – ISOLATOR DETAILS YORK INTERNATIONAL... -
Page 84: Fig. 35 - Isolator Details
AWMR-4 1-1/4 7-1/2 3-3/4 7-3/4 14-1/2 7-1/4 1000-1628 AWMR-1 10-1/2 3-1/2 1-3/4 8-1/2 4-1/4 10-1/2 50-553 11NC AWMR-2 7-1/2 3-3/4 9-1/2 14-1/2 7-1/4 50-553 10NC AWMR-4 1-1/4 7-1/2 3-3/4 9-3/4 14-1/2 7-1/4 52-553 FIG. 35 – ISOLATOR DETAILS YORK INTERNATIONAL... -
Page 85: Isolator Locations
FORM 201.18-NM8 ISOLATOR LOCATIONS 16 mm (5/8") LD06968 FIG. 36 – ISOLATOR LOCATIONS FOR ALL MODELS YORK INTERNATIONAL... -
Page 86: Clearances
Technical Data CLEARANCES 1.3 m (48") (72") LD03484 NOTES: No obstructions allowed above the unit. Only one adjacent wall may be higher than the unit. Adjacent units should be 3 meters (10 feet) apart. FIG. 37 – CLEARANCES YORK INTERNATIONAL... -
Page 87: Refrigerant Flow Diagram
The high pressure oil-free vapor is fed to the Air- cooled condenser coil and fans where the heat is removed. FIG. 38 – REFRIGERANT FLOW DIAGRAM YORK INTERNATIONAL... -
Page 88: Process And Instrumentation Diagram
DIFFERENTIAL PRESSURE CUTOUT DISCHARGE PRESSURE FAN CONTROL COOLER OCLR OIL COOLER COIL DISPLAY VALUE OIL SEPARATOR HIGH PRESSURE LOAD LIMITING HIGH TEMPERATURE CUTOUT LOW PRESSURE CUTOUT LOW TEMPERATURE CUTOUT SUPERHEAT VALVE LD06897 FIG. 39 – PROCESS AND INSTRUMENTATION DIAGRAM YORK INTERNATIONAL... -
Page 89: 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 LD03487 FIG. 40 – COMPONENT LOCATIONS YORK INTERNATIONAL... -
Page 90: 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. 41 – COMPRESSOR COMPONENTS YORK INTERNATIONAL... -
Page 91: Fig. 42 - Compressor Components
FORM 201.18-NM8 COMPRESSOR COMPONENTS - CONT’D LD03669 FIG. 42 – COMPRESSOR COMPONENTS YORK INTERNATIONAL... -
Page 92: Fig. 43 - Compressor Components
Technical Data COMPRESSOR COMPONENTS - CONT’D LD03670 FIG. 43 – COMPRESSOR COMPONENTS YORK INTERNATIONAL... -
Page 93: Fig. 44 - Compressor Components
FORM 201.18-NM8 COMPRESSOR COMPONENTS - CONT’D LD03671 FIG. 44 – COMPRESSOR COMPONENTS YORK INTERNATIONAL... -
Page 94: Fig. 45 - Compressor Components
Technical Data COMPRESSOR COMPONENTS - CONT’D SLIDE VALVE RETURN SPRING MOTOR ROTOR / MALE ROTOR LOCKING O-RING MALE ROTOR RELIEF O-RING SLIDE VALVE VALVE SUPPORT ECONOMIZER FEMALE ROTOR RINGS PLUG FIG. 45 – COMPRESSOR COMPONENTS LD03672 YORK INTERNATIONAL... -
Page 95: Fig. 46 - Compressor Components
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. 46 – COMPRESSOR COMPONENTS YORK INTERNATIONAL... -
Page 96: Start-Up
SOLD BY: ________________________________ bottom or top sight glass with the com- INSTALLING pressor off. CONTRACTOR: ___________________________ If it is necessary to add oil, connect a YORK oil START-UP TECHNICIAN/ pump to the charging valve on the oil separator, COMPANY: _______________________________ but do not tighten the flare nut on the delivery tub- ing. - Page 97 After sev- eral minutes of operation, the bubbles in the sight glass will disappear and there will be a solid col- umn of liquid when the TXV stabilizes. After YORK INTERNATIONAL...
- Page 98 Suction Press = ____ ____ ____ ____ °C (0°F) SUBCOOLING = 8°C (15°F) Temp = ____ ____ ____ ____ °C (0°F) The subcooling should be adjusted to 7-8°C (12 - 15°F). Superheat = ____ ____ ____ ____ °C (0°F) YORK INTERNATIONAL...
- Page 99 Assure that superheat is set between 6 - 7°C (10 -12°F). YORK INTERNATIONAL...
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Page 100: Section 9 Micro Panel Contents Chiller Control Panel Programming & Data Access
This switch shuts down the entire chiller when placed This key is used for display and programming of the in the OFF position. The switch must be ON for the chiller operational settings and limits. chiller to operate. YORK INTERNATIONAL... -
Page 101: Introduction & Physical Description
External interface is available for control of the chiller Status message indication will be displayed. See Page via a YORK ISN System or YORK Remote Control 93 for the location of this switch. Center. In addition, EMS/BAS System connections are... -
Page 102: Ancillary Circuit Boards
The relay boards are located in the logic section of the mally. Failure to turn the Clock ON could result in the control panel(s). The boards convert 0 - 12VDC logic YORK INTERNATIONAL... -
Page 103: Circuit Breakers
Power Supply Board which rectifies and The module also provides phase rotation protection to filters the signals to variable DC Voltage (analog). These assure the screw compressor does not rotate backwards. analog levels are then fed to the Microprocessor Board YORK INTERNATIONAL... -
Page 104: Fig. 47 - Motor Protection Module
Micro Panel Contents 29119A SIDE VIEW 29121A 29121A TOP VIEW TOP VIEW DISPLAY SWITCH PUSHED TO LEFT INDICATES “ON” 29120A SIDE VIEW FIG. 47 – MOTOR PROTECTION MODULE YORK INTERNATIONAL... -
Page 105: Ems / Bas Connections
Remote Reset Curr = 105% FLA - {(4sec - 1 sec) X (75%FLA)} shown in Section 1.12. 10 sec = 105% - 225%FLA sec Never bypass a flow switch. This will 10 sec cause damage to the chiller and void any warranties. = 82.5% FLA YORK INTERNATIONAL... - Page 106 Reset Temp = 66°C sec (relay, contactor) is supplying these 10 sec contacts, the coil of the device must be = 6°C (12°F) suppressed with a standard RC sup- pressor (50 Hz models) across the in- ductive coil. YORK INTERNATIONAL...
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Page 107: Microprocessor Board Layout
NOTE : Dimple is positioned at top edge Dip Switch Set (8 switches) S2 to S5 System Switches S2 = System 1 S3 = System 2 S4 = System 3 S5 = System 4 FIG. 48 – COMPONENT LAYOUT YORK INTERNATIONAL... -
Page 108: Logic Section Layout
50 HZ MODEL LOGIC SECTION ITEM DESCRIPTION Microprocessor Board Back of Keypad Back of Display I/O Expansion Board Power Supply Board Relay Output Board #1 Relay Output Board #2 Flow Switch & Customer Connection Terminals FIG. 49 – LOGIC SECTION LAYOUT YORK INTERNATIONAL... -
Page 109: Anti-Recycle Timer
(150°F) and will turn on when the discharge tempera- tem or if power is lost to the control panel. The internal ture is equal to or less than 66°C (150°F). contacts are normally open (N.O.) and will close when YORK INTERNATIONAL... -
Page 110: Run Status (Chiller)
YCAS 4-system models) compressor cal equipment) and the alarm circuit is swapped to the lead. This is true regardless of should fail to function, YORK will not whether the lag compressor is ON or OFF. be liable for damages. -
Page 111: Status Key & 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 112: Unit Warnings
MANUAL OVERRIDE restart, if a power fail- in the Logic Section(s) of the control panel(s) is/are ure occurs. open. Whenever the contact(s) is /are open, the No Run Permissive message will be displayed and the indicated system will not run. YORK INTERNATIONAL... -
Page 113: Anticipation Control Status Messages
L I M I T I N G the Unit Switch must be cycled OFF and ON to start the unit. The Suction Temperature Limiting message applies only when the chiller is set for Water Cooling Mode (see YORK INTERNATIONAL... -
Page 114: Unit Fault Status Messages
2 minute start-up timer has elapsed from The Low Ambient Temperature Safety protects the the time when power is re-applied, if the AUTO RE- chiller from running in very low temperatures which START ON POWER FAILURE is enabled. Otherwise YORK INTERNATIONAL... -
Page 115: System Fault (Safety) Status Messages
OFF position, then back when the maximum limit is reached the compressor will to the ON position (see Section 1.11, Fig.48 for switch be shut down. locations). YORK INTERNATIONAL... -
Page 116: Fig. 50 - Suction Pressure Cutout
54 - 66°C (130 - 150°F). Suction Pressure Cutout With 44 PSIG Programmed Cutout The High Oil Temperature Safety is activated after 2 minutes of compressor operation, after which if oil tem- FIG. 50 – SUCTION PRESSURE CUTOUT YORK INTERNATIONAL... - Page 117 3 Current Transformers (CTs) down the compressor. Auto restart will not occur since per motor, one on each phase. manual reset is required. A fault lockout will automati- YORK INTERNATIONAL...
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Page 118: Printout On Fault Shutdown
A fault lockout will result if safety thresh- occur with the corresponding auto- olds are exceeded three times in a 90 minute period. matic printout. This is not a cause for concern. YORK INTERNATIONAL... -
Page 119: Display Keys & Option Switches
M C H L T 6 . 6 ° the ability of the micro to give an actual reading. This YORK INTERNATIONAL... -
Page 120: System # Data Keys
T E M P up to 3 bar (40 PSID). 2 2 . 2 ° C Saturated discharge and suction temperatures are com- Display Limits: Minimum = -20.3°C (-4.6°F) puted by converting measured pressure to temperature. Maximum = 58.8°C (137.9°F) YORK INTERNATIONAL... -
Page 121: Motor Current Key
S 1 - 2 A M B I E N T C O N T R O L the chiller. The Options key can be used to verify the L O W A M B I E N T YORK INTERNATIONAL... -
Page 122: Fig. 51 - Enlarged Photograph Of Dip Switches
R-22. Incorrect selection of this switch may cause serious damage to the chiller. “OPEN” Position: Left side of switch pushed in “CLOSED” Position: LD03511B Right side of switch pushed in LD03511A FIG. 51 – ENLARGED PHOTOGRAPH OF DIP SWITCHES ON MICROPROCESSOR BOARD YORK INTERNATIONAL... -
Page 123: Function Key
Control Control Refrigerant R407C Refrigerant R-22 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 Spare Spare YORK INTERNATIONAL... -
Page 124: Print Keys
“rate control” transmitted from the microprocessor to the remote and “temperature deviation from setpoint” to determine printer. As the data is transmitted it is erased from the when loading should occur. memory. YORK INTERNATIONAL... -
Page 125: Operating Data - Remote Printout
In this case an example is shown PWM CURR –EMS PWM Current Limiting Enabled for a YCAS 2-system Chiller. PWM TEMP – EMS PWM Temp. Reset Enabled CUR/TEMP – EMS PWM Current Limiting & Temperature Reset Enabled YORK INTERNATIONAL... - Page 126 Micro Panel Contents YORK INTERNATIONAL CORPORATION SCREW CHILLER SYSTEM 2 DATA UNIT STATUS COMPRESSORS STATUS 2:04PM 10 OCT 99 RUN TIME 0- 0-15-26 D-H-M-S MOTOR CURRENT 104 AMPS 87 %FLA SYS 1 NO COOLING LOAD SUCTION PRESSURE 57 PSIG DISCHARGE PRESSURE...
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Page 127: History Key
This message displays the suction pressure cutout 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 128 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 129 5 3 . 9 ° C D S C H S H E A T < – 2 2 . 4 ° 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 130: Fault History Data - Remote Printout
COMPRESSOR HEATER WYE-DELTA RELAY An example of the HISTORY Printout is shown. SYSTEM 2 DATA COMPRESSORS STATUS RUN TIME 0- 0-15-26 D-H-M-S YORK INTERNATIONAL CORPORATION MOTOR CURRENT 104 AMPS 87 %FLA SCREW CHILLER SUCTION PRESSURE 57 PSIG DISCHARGE PRESSURE 233 PSIG... -
Page 131: Entry Keys
“AM” or “PM” on the display. For â this is not done, the new values entered will be lost and example, pressing the key when the cursor is on “PM” the original values will be returned. changes it to “AM”. YORK INTERNATIONAL... -
Page 132: Setpoints Keys
This to control the leaving temperature to the actual Setpoint is accomplished by programming the “Setpoint” and temperature. This is accomplished by analyzing the tem- the acceptable deviation (+ or - Range) This deviation is YORK INTERNATIONAL... - Page 133 Whenever chilled liquid leaving temperature is above Fixed timers are set to minimize undershoot and over- the Setpoint, loading current will increase to allow oil shoot as a result of slide valve control. pressure to move the slide valve to increase capacity. YORK INTERNATIONAL...
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Page 134: Local Cooling Setpoints Key
As load continues to decrease, the lead compressor will processor Board must be properly programmed for be pumped down and cycled off if the chilled liquid tem- Brine Cooling (see Section 3.7). If unacceptable val- perature drops below “Setpoint – Control Range/2”. YORK INTERNATIONAL... -
Page 135: Remote Cooling Setpoints Key
“0” for val- from a remote device. This feature is typically used for ues less than 10°C (or 10°F). Press the ENTER Key to demand limiting or ice storage applications. Reset is store the new value in memory. YORK INTERNATIONAL... -
Page 136: Clock Keys
Press ENTER to move on to the hour part of the dis- ing the Set Time key a second time play. Next, key in the time (hours/minutes) using a lead- enters “display” mode in which the cursor will disappear and the “live” clock will be displayed. YORK INTERNATIONAL... -
Page 137: Set Schedule / Holiday Key
ON position, all 00.00s should be programmed into most special Holiday Schedule the daily schedule. This can be done manually for indi- requirements occur only vidual days or for all days by pressing Cancel and En- ter for the Monday Start / Stop schedule. occasionally. YORK INTERNATIONAL... -
Page 138: Manual Override Key
Daily Schedule. Once activated, Manual Override is on line. See also 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 139: Program Key
Enter key is the first 5 seconds of operation after which if the cutout pressed and the display will scroll on to the next pro- point is exceeded for 3 seconds, the system will shut grammable value. down. YORK INTERNATIONAL... - Page 140 0.3 bar (5 - 70 PSIG) for tion at low refrigerant suction pressure. R-22 and R407C models. In this mode, the cutout should YORK INTERNATIONAL...
- Page 141 Values below -4°C (25°F) can be motor current safety shutdown by unloading a compres- used for applications requiring chiller operation at lower sor, if current draw approaches the maximum limit cut- temperatures. If operation is occasionally needed be- YORK INTERNATIONAL...
- Page 142 A fast compressor start response is needed in some applications and not in others. Al- Manual lead/lag. The ENTER key must be pressed to though the minimum setting allowed on this timer will save the selection in memory. YORK INTERNATIONAL...
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Page 143: Programming "Default" Values
To program the default values into memory, first press Leaving Chilled Liquid Temp Cutout 2°C 36°F the PROGRAM key followed by the ENTER key, to Suction Pressure Cutout R-22 3 bar 44 PSIG program the “refrigerant type.” Press the Program key YORK INTERNATIONAL... -
Page 144: Condenser Fan Control
15M, 16M, 17M, 18M, 19M 230, 231, 232 10, 14, 15 TABLE 3 – CONDENSER FAN CONTROL & FAN CONTACTOR DATA FOR DXST UNITS WITH 5 FANS/SYSTEM LD06969 FIG. 52 – CONDENSER FAN LAYOUT FOR DXST 2-COMPRESSOR UNITS YORK INTERNATIONAL... -
Page 145: Maintenance
Compressor Oil Level improper maintenance during the warranty period, Check the compressor oil level after the compressor YORK shall not be liable for costs incurred to return has been operating on ‘FULL LOAD’ for approximately the unit to satisfactory condition. -
Page 146: Fig. 53 - Operating Log
Maintenance FIG. 53 – OPERATING LOG YORK INTERNATIONAL... -
Page 147: Maintenance Requirements
FORM 201.18-NM8 YORK INTERNATIONAL... -
Page 148: General Periodic Maintenance Checks Standard Units
Check contactor contacts. Microprocessor controls: Check fault history. Check fan control function. Check program settings . Check ambient cutout function. Check HP / LP cutout function’s Check low oil pressure function. Check pump-down function. Check load / unload function. YORK INTERNATIONAL... -
Page 149: Spare Parts
Full unit model number, serial number, application and de- tails of the parts required. All requests for parts should be made to your local YORK Sales and Service Center. RECOMMENDED COMPRESSOR OILS The correct type of oil must be used in the unit as shown on the unit data plate and labels. -
Page 150: 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 151 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 152: Sensor Calibration Charts
Test Point ............Microboard J11-9/3 System 1: ............Microboard J13-7/1 System 2: ............Microboard J14-7/1 Oil Pressure: System 1: ............Microboard J13-8/3 System 2: ............Microboard J14-8/3 Discharge Pressure: System 1: ............Microboard J15-8/3 System 2: ............Microboard J15-7/1 YORK INTERNATIONAL... -
Page 153: Limited Warranty
(18) months from date of shipment, whichever has been received by YORK. occurs first. Subject to the exclusions listed below, YORK, at its option, will repair or replace, FOB point ALL WARRANTIES AND GUARANTEES ARE VOID of shipment, such YORK products or components as it finds defective. -
Page 154: 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 155 FORM 201.18-NM8 YORK INTERNATIONAL...
- Page 156 Tele. 800-861-1001 P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA www.york.com Copyright © by York International Corporation 2001 ALL RIGHTS RESERVED Form 201.18-NM8 (701) New Release...