Page 1 AIR-COOLED SCREW LIQUID CHILLERS New Release Form 201.19-NM6 (804) INSTALLATION, OPERATION & MAIN TE NANCE 035-20884-000 YCAS AIR-COOLED LIQUID CHILLERS YCAS0693EC THROUGH YCAS0953EC (3 COMPRESSOR) YCAS1063EC THROUGH YCAS1263EC (4 COMPRESSOR) STYLE G R-22 50 Hz 00258VIP (YCAS 4 SYSTEM EPROMs)
Page 2 While YORK makes no com mit ment to update or provide current information au to mat i cal ly to the manual owner, that information, if ap pli ca ble, can be ob tained by con tact ing the nearest YORK Engineered Systems Service ofﬁ...
Page 3 NOT be installed inside the mi cro pan el. NO external wiring is al lowed to be run through the micro panel. All wir ing must be in ac cor dance with YORK’s pub lished spec i ﬁ ca tions and must be per formed ONLY by qual i ﬁ ed YORK personnel. YORK will not be re spon si ble for dam ag es/problems re sult ing from im prop er con nec tions to the con trols or ap pli ca tion of im prop er con trol sig nals.
Page 4: Table Of Contents
Remote Run / Stop............33 Building Automation System (BAS) Interface....21 Remote Print..............33 Condenser Coil Protection ..........21 Remote Setpoint Offset – Temperature .......33 DX EVAPORATOR AND STARTER OPTIONS ..22 Remote Setpoint Offset – Current .......33 UNIT ENCLOSURE OPTIONS......... 22 YORK INTERNATIONAL...
Page 5 GLYCOL CORRECTION FACTORS ....46 PROGRAMMED VALUES ........131 INITIAL START-UP..........132 SECTION 7 - TECHNICAL DATA ....46 CHECKING SUBCOOLING AND SUPERHEAT ..132 EVAPORATOR WATER PRESSURE DROP ..46 CHECKING ECONOMIZER SUPERHEAT ...133 PHYSICAL DATA - YCAS R-22 (SI UNITS)....48 LEAK CHECKING...........133 YORK INTERNATIONAL...
Page 6 3.5 % Motor Current Key..........158 Scheduled Maintenance..........207 3.6 Operating Hrs / Start Counter Key ......158 ON-BOARD BATTERY BACK-UP ......207 3.7 Options Key & Dip Switch Settings....158 OVERALL UNIT INSPECTION....... 207 3.8 Function Key ............160 COMPRESSOR UNIT OPERATION ...... 208 YORK INTERNATIONAL...
Page 7 DXST UNITS ........192 TABLE 10 – SERVICE MODE PROGRAMMABLE VALUES..........193 TABLE 11 – YCAS STYLE G, ACROSS THE LINE START - 50 HZ......194 TABLE 12 – YCAS STYLE G, WYE DELTA START - 50 HZ........195 TABLE 13 –...
Page 8 FIG. 80 – CONDENSER FAN CONTROL LAYOUT FOR 3 COMPRESSOR..........71 DXST COMPRESSORS UNITS..... 189 FIG. 34 – ELEMENTARY WIRING DIAGRAM - FIG. 81 – CONDENSER FAN CONTROL LAYOUT FOR 4 - COMPRESSOR ............72 DXST COMPRESSORS UNITS...... 191 YORK INTERNATIONAL...
Page 9: Section 1 - General Chiller Information & Safety
Standards for Safety manuals. YCAS chillers are designed and built with in an ISO 9002 accredited design and manufacturing or ga ni za tion. WARRANTY The chillers comply with the applicable sec tions of the...
Page 10: Responsibility For Safety
This manual and any other document supplied with the unit, are the property of YORK which reserves all rights. They may not be reproduced, in whole or in part, with out prior written authorization from an authorized YORK representative.
Page 11: Electrical
(Sys tem 4) can also be used to stop the re spec tive sys tem in an emer gen cy. When op er at ed, CB4 re moves the elec tri cal supply from the con trol sys tem, thus shut ting down the unit. YORK INTERNATIONAL...
Page 12: Section 2 - Product Description
INTRODUCTION All exposed power wiring is be routed through liquid- tight, non-metallic conduit. YORK YCAS chillers are designed for water or wa- ter-glycol cooling. All units are designed to be lo cat ed General Description outside on the roof of a building or at ground level.
Page 13: Evaporator
Condenser The ﬁ n and tube condenser coils are manufactured from seamless, internally enhanced, high condensing co ef ﬁ cient, corrosion resistant copper tubes arranged in 00485VIP FIG. 2 – SCREW COMPRESSOR YORK INTERNATIONAL...
Page 14: Economizer
Economizer (Models YCAS 773, 953, 1093 and 1263) The oil (YORK “L” oil – a POE oil used for all A plate and frame heat exchanger (economizer) is ﬁ tted re frig er ant applications), which ﬂ ows back into the to both refrigerant circuits on models YCAS 773, 953, com pres sor through a replaceable 0.5 - 3.0 micron...
Page 15: Capacity Control
ON/OFF switch, microcomputer keypad and display, system that has fault ed on high motor current. mi cro pro ces sor board, I/O expansion board, relay boards and power supply board. YORK INTERNATIONAL...
Page 16: Motor Protection Modules (2Ace)
It is recommended that a YORK imbalance > 17%. Unloaded phase to phase cur rent Ser vice Tech ni cian or the YORK imbalance > 25%. fac to ry be con sult ed before chang ing Improper in com ing phase ro ta tion.
Page 17: Thermal Overload
“Op er at ing Current” to the measured half line current. The “Op er at ing Current” is given by 0.65 X factory Additional information on the 2ACE MP module may overload cur rent setting. be found on page 138. YORK INTERNATIONAL...
Page 18: Table 1 - Motor Protector Dip Switch Setting
Sys 1 & 2 0783 Sys 3 0873 0953 1063 Sys 1 & 2 1063 Sys 3 & 4 1093 Sys 1 & 2 1093 Sys 3 & 4 1163 1263 * Indicates one lead/phase through motor protector. YORK INTERNATIONAL...
Page 19 Sys 1 & 2 0783 Sys 3 0873 0953 1063 Sys 1 & 2 1063 Sys 3 & 4 1093 Sys 1 & 2 1093 Sys 3 & 4 1163 1263 * Indicates one lead/phase through motor protector. YORK INTERNATIONAL...
Page 20: Motor Starting
• “Out of range” message. 2) con tacts deenergizes 1S/2S and clos es the nor mal ly • Up to 6 fault shut down conditions. (4 in YCAS 3 closed 1S (SYS 1) or 2S (SYS 2) con tacts, en er giz ing, Compressor and YCAS 4 Compressor).
Page 21: Program
Print – Used to display or print operating data or sys tem the BAS (Factory-mounted): fault shutdown history for last six faults. (4 in YCAS 3 Compressor and YCAS 4 Compressor models). Printouts Printed circuit board to accept 4 to 20mA, 0 to 10VDC, through an RS-232 port via a separate print er.
Page 22: Dx Evaporator And Starter Options
(Factory- or ﬁ eld-mounted). Louvered panels (full unit) enclosure – Louvered panels over condenser coils and around the bottom of the unit (Factory- or ﬁ eld-mounted). YORK INTERNATIONAL...
Page 23: Unit Nomenclature
5 6 7 8 11 12 13 14 15 BASE PRODUCT TYPE NOMINAL CAPACITY UNIT DESIGNATOR REFRIGERANT VOLTAGE/STARTER DESIGN/DEVELOPMENT LEVEL (STYLE) : YORK Tons : Design Series G High-EfÞ ciency : R-407C 0693 : Engineering : Chiller Standard : R-22...
Page 24: Product Identification Number (Pin)
EXAMPLES: 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54...
Page 25: Delivery And Storage
Units with remote evaporators will have the chiller and Major damage must be reported immediately to your remote evaporator charged with nitrogen. lo cal YORK representative. MOVING THE CHILLER If the unit is to be put into storage, prior to installation,...
Page 26: Unit Rigging
Handling and Storage FORM 201.19-NM6 (804) UNIT RIGGING ✓ 88" (2250mm) CORRECT! CORRECT! ✗ WRONG! WRONG! LD03514 FIG. 3 – UNIT RIGGING WRONG! CORRECT! LD03515 FIG. 4 – LIFTING LUGS YORK INTERNATIONAL...
Page 27: Location Requirements
4-3/4" (120 mm) wide at the con tact tion the same requirement of static pres sure loss ap plies points. This will allow vibration isolators to be ﬁ tted as for ducts and at ten u a tors stated above. if required. YORK INTERNATIONAL...
Page 28: Compressor Feet Bolt Removal
DO NOT remove the four 3/8" bolts, 3, mounting the in the Tech ni cal Data Section of this corner brackets, 2, to the frame rails. manual, (page 102). COMPRESSOR BASE SUPPORT RAIL CHANNEL BASE LD09131 FIG. 5 – COMPRESSOR MOUNTING YORK INTERNATIONAL...
Page 29: Vibration Isolators
PSIG) working pres sure and hav ing a 1" N.P.T. con- nection can be obtained from YORK as an ac ces so ry PIPEWORK CONNECTION for the unit. Al ter na tive ly a dif fer en tial pres sure switch sited across an oriﬁ...
Page 30: Water Treatment
ﬂ ow to other units. Aerated, brackish or salt water is not recommended for use in the water system(s). YORK recommends that Thermometer and pressure gauge connections should a wa ter treatment specialist is consulted to determine...
Page 31: Pipework Arrangement
No more than 3 feet (1 meter) of light the evaporator to the compressors. con struc tion ductwork should be supported by the unit. Where cross winds may occur, any ductwork must be sup port ed to prevent side loading on the unit. YORK INTERNATIONAL...
Page 32: Electrical Connection
This will prevent re cir - la tion (not sup plied by YORK). cu la tion of air when only one of the fans is running.
Page 33: Remote Emergency Stop Device
Flow Switch If required, a remote emergency stop de vice can be wired A chilled water ﬂ ow switch, (either by YORK or others) into the unit. The device should be wired into ter mi nals MUST be installed in the leaving water piping of the 31 and 32 (Figs.
Page 34: Fig. 9 - Power Panel Section
Installation FORM 201.19-NM6 (804) POWER PANEL LAYOUTS (TYPICAL) (WYE-DELTA - TYPICAL) 00263VIP FIG. 9 – POWER PANEL SECTION YORK INTERNATIONAL...
Page 35: Fig. 10 - Option Panel Section
FORM 201.19-NM6 (804) OPTION PANEL LAYOUT (TYPICAL) 00246VIP FIG. 10 – OPTION PANEL SECTION YORK INTERNATIONAL...
Page 36: Fig. 11 - Logic Section Layout
DESCRIPTION Microprocessor Board I/O Board #2 I/O Expansion Board #1 Power Supply Board Relay Output Board #1 Relay Output Board #2 Flow Switch & Customer Connection Terminals Circuit Breakers CB1 - CB5 FIG. 11 – LOGIC SECTION LAYOUT YORK INTERNATIONAL...
Page 37: Fig. 12 - Logic Section Layout With
FORM 201.19-NM6 (804) LOGIC SECTION LAYOUT WITH CONTROL PANEL 00248VIP FIG. 12 – LOGIC SECTION LAYOUT WITH CONTROL PANEL YORK INTERNATIONAL...
Page 38: Fig. 13 - Customer Connections
Chilled Liquid Circulating Pump Start Temperature System No. 2 Print Alarm Contacts Chiller Run CONNECTION Isolator POINTS FOR Auxiliary EMERGENCY Interlock STOPS System No. 3 Alarm Contacts System No. 4 Alarm Contacts LD09410 FIG. 13 – CUSTOMER CONNECTIONS YORK INTERNATIONAL...
Page 39 FORM 201.19-NM6 (804) CUSTOMER CONNECTIONS RELAY BOARDS I/O EXPANSION BOARD #1 TRANSFORMERS POWER SUPPLY BOARD CIRCUIT BREAKERS (CB1-CB5) 115 VAC SUPPLY MICROPROCESSOR CUSTOMER CIRCUIT BOARD CONNECTIONS (Flow Switch, Alarm, Run, etc.) 00247VIP FIG. 14 – CUSTOMER CONNECTIONS YORK INTERNATIONAL...
Page 40: Section 5 - Commissioning
It is important to check that the correct pri ma ry Compressor Oil 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 voltage to the unit turned off, remove on the oil separator piping with a length of clean hose the lid to the transformer box.
Page 41: Switch Settings
(off set) is to be used, the maximum reset must be pro- wired into the control panel correctly using shielded grammed by pressing the ‘Remote Reset Temp’ key. (See Section 6.) YORK INTERNATIONAL...
Page 42: First Time Start-Up
After several min utes operation and providing a full charge of re frig er ant is in the system, the bubbles will disappear and be re placed by a solid column of liquid. YORK INTERNATIONAL...
Page 43 FORM 201.19-NM6 (804) This page intentionally left blank. YORK INTERNATIONAL...
Page 44: Section 6 - Operation
The units are designed to work independently, or in Once the unit has been started, all operations are fully con junc tion with other equipment via a YORK ISN automatic. After an initial period at minimum capacity build ing management system or other automated con- on the lead compressor, the control system will adjust trol sys tem.
Page 45 FORM 201.19-NM6 (804) This page intentionally left blank. YORK INTERNATIONAL...
Page 46: Flow Rate And Pressure Drop Charts
10.00 1.00 10.00 100.00 Water Flow (l/s) LD04482A MODEL NUMBER YCAS EVAPORATOR 0693, 0773, 0783, 0873, 0953 1063, 1093, 1163, 1263 Pressure Conversion : Ft H20 = 2.3 x PSI FIG. 15 – FLOW RATE AND PRESSURE DROP CHARTS GLYCOL CORRECTION FACTORS...
Page 47 1. For leaving brine temperature below 4.4°C, contact your nearest YORK ofÞ ce for application requirements. 2. For leaving water temperature higher than 13°C, contact the nearest YORK ofÞ ce for application guidelines. 3. The evaporator is protected against freeze-up to -28.8°C with an electrical heater as standard.
Page 48: Physical Data - Ycas R-22 (Si Units)
Technical Data FORM 201.19-NM6 (804) PHYSICAL DATA - YCAS R-22 (SI UNITS) MODEL NUMBER YCAS 0693SC 0773SC 0783EC 0873EC 0953EC 1063EC 1093SC 1163EC 1263EC General Unit Data Unit Capacity at 6.7°C water & 35°C ambient, kW 1002 1045 1095 1199 Number of Independent Refrigerant Circuits Refrig.
Page 49: Operating Limitations And Sound Power Data
OPERATING LIMITATIONS – SI UNITS LEAVING CHILLED LIQUID TEMP ( °C) CHILLED WATER TEMP DIFFERENCE ( °C) WATER SIDE PRESSURE (BAR) – REFRIGERANT SIDE PRESSURE (BAR) – LIQUID FLOW MODEL LITERS/SECOND YCAS MIN. MAX. 0693EC 50.0 0773EC 50.0 0783EC 50.0 0873EC 50.0...
Page 50: Electrical Data
Factory Provided (Lugs) 11, 12 Compressor #1 Com pres sor #3 Wire Range Model Data Over-current Min NF YCAS Volts Protection Standard Optional NF (MCA) Disc SW RLA Y-∆ LRA X-LRA RLA Y-∆ LRA X-LRA Qty FLA (ea) LRA (ea) Min. Max.
Page 51: Fig. 18 - Multiple Point Power Supply Connection With Individual System Circuit Breakers
Factory Provided (Lugs) 11, 12 Chiller Compressor #2 Com pres sor #4 Wire Range Model Data Over-current YCAS Volts Protection Min NF *Standard *Optional NF RLA Y-∆ LRA X-LRA RLA Y-∆ LRA X-LRA Qty FLA (ea) LRA (ea) (MCA) Disc SW 2, 9 Min.
Page 52: Electrical Data
FIELD SUPPLIED WIRING Chiller Field Provided Power Supply Factory Provided (Lugs) Wire Range Model Volts MRA Terminal Block NF Disc. Switch Min NF Over-Current Protection YCAS (Lugs) Wire Range (Lugs) Wire Range (MCA) Disc SW Min. 3, 5 Max. 4, 6 0693...
Page 53 RLA Y-∆ LRA X-LRA FLA (ea) LRA (ea) 17.1 — — — 17.1 17.1 — — — 17.1 17.1 — — — 17.1 17.1 — — — 17.1 17.1 — — — 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 17.1 YORK INTERNATIONAL...
Page 54: Electrical Notes
Minimum Circuit Ampacity to be provided by the installer. If a factory mounted Control Transformer is provided, add 3 amps to the system #1 MCA values in the YCAS Tables. The recommended disconnect switch is based on a minimum of 115% of the summation rated load amps of all the loads included in the circuit, per N.E.C.
Page 55: Table 2 - Compressor Data
DXS45LA – MOTOR CODE A DXS36LA – MOTOR CODE A DXS24LA – MOTOR CODE (TBD) (B5N, B5E, B6N, B6E) (A5N, A5E, A6N, A6E) (C5N, C5E, C6N, C6E) VOLTAGE CODE- -46 -50 -56 MAX kW 80 105 MAX AMPS 135 118 YORK INTERNATIONAL...
Page 56: Elementary Wiring Diagram Ycas0693 - Ycas0953 (3 Compressor)
Technical Data FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS0693 - YCAS0953 (3 COMPRESSOR) 035-15937-103 Rev - A LD09350 FIG. 20 – ELEMENTARY WIRING DIAGRAM – DXST DIRECT DRIVE 3 COMPRESSOR YORK INTERNATIONAL...
Page 57: Fig. 21 - Elementary Wiring Diagram - Across-The-Line Start 3 Compressor
FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS0693 - YCAS0953 (3 COMPRESSOR) ACROSS-THE-LINE START 035-15937-1 Rev - A LD09352 FIG. 21 – ELEMENTARY WIRING DIAGRAM – ACROSS-THE-LINE START 3 COMPRESSOR YORK INTERNATIONAL...
Page 58: Fig. 22 - Elementary Wiring Diagram - Wye Delta Start 3 Compressor
Technical Data FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS0693 - YCAS0953 (3 COMPRESSOR) WYE DELTA START 035-15937-103 Rev - A LD09353 FIG. 22 – ELEMENTARY WIRING DIAGRAM – WYE DELTA START 3 COMPRESSOR YORK INTERNATIONAL...
Page 59: Fig. 23 - Control Power Transformer Kit
Terminal Block for Customer Low Voltage (Class 2) Connections. See Note 2 2. Contacts must be suitable for switching 24VDC, (Gold Terminal Block for YORK Connections Only contacts recommend). Wiring shall not be run in the same conduit with any line voltage wiring.
Page 60: Fig. 24 - Elementary Wiring Diagram Dxst Direct Drive Control Circuit
Technical Data FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS0693 - YCAS0953 (3 COMPRESSOR) LD09354 FIG. 24 – ELEMENTARY WIRING DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT YORK INTERNATIONAL...
Page 61 Ad- pressed with a YORK P/N 031-00808-000 sup pres sor across the ditionally, con trol wir ing not con nect ed to the Smart Panel should not re lay/con tac tor coil.
Page 62: Connection Diagram Elec. Box Ycas0693 - Ycas0953
Technical Data FORM 201.19-NM6 (804) CONNECTION DIAGRAM ELEC. BOX (YCAS0693 - YCAS0953) LD09362a FIG. 25 – CONNECTION DIAGRAM 3 COMPRESSOR YORK INTERNATIONAL...
Page 63: Fig. 26 - Connection Diagram 3 Compressor
FORM 201.19-NM6 (804) Power Panel 035-19205-104 Rev - A LD09358 FIG. 26 – CONNECTION DIAGRAM 3 COMPRESSOR POWER PANEL YORK INTERNATIONAL...
Page 64: Connection Wiring Diagram
Technical Data FORM 201.19-NM6 (804) CONNECTION WIRING DIAGRAM 035-19205-104 Rev - A Power Panel LD09356 FIG. 27 – CONNECTION DIAGRAM 3 COMPRESSOR POWER PANEL YORK INTERNATIONAL...
Page 65 FORM 201.19-NM6 (804) Electronic Panel 035-19205-104 Rev - A LD09359 YORK INTERNATIONAL...
Page 66: Fig. 28 - Connection Diagram 3 Compressor
Technical Data FORM 201.19-NM6 (804) 035-19205-105 Power Panel Rev - A LD09360 FIG. 28 – CONNECTION DIAGRAM 3 COMPRESSOR POWER PANEL YORK INTERNATIONAL...
Page 67: Fig. 29 - Connection Diagram 3 Compressor
FORM 201.19-NM6 (804) CONNECTION WIRING DIAGRAM Electronic Panel 035-19205-105 Rev - A LD09361 FIG. 29 – CONNECTION DIAGRAM 3 COMPRESSOR ELECTRONIC PANEL YORK INTERNATIONAL...
Page 68: Elementary Diagram Dxst Direct Drive Control Circuit
Technical Data FORM 201.19-NM6 (804) ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT 035-15937-102 Rev - D 2ACE Motor Protector LD09363 FIG. 30 – ELEMENTARY DIAGRAM 3 COMPRESSOR DXST DIRECT DRIVE CONTROL CIRCUIT YORK INTERNATIONAL...
Page 69: Elementary Wiring Diagram
FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM 035-15937-102 Rev - D LD09364 FIG. 31 – ELEMENTARY DIAGRAM DXST DIRECT DRIVE - 3 COMPRESSOR YORK INTERNATIONAL...
Page 70: Connection Diagram System Wiring
Technical Data FORM 201.19-NM6 (804) CONNECTION DIAGRAM SYSTEM WIRING 035-19205-106 Rev - LD09365 FIG. 32 – CONNECTION DIAGRAM SYSTEM WIRING 3 COMPRESSOR YORK INTERNATIONAL...
Page 71: Fig. 33 - Connection Diagram Ststem Wiring
FORM 201.19-NM6 (804) CONNECTION DIAGRAM SYSTEM WIRING 035-19205-106 Rev - LD09366 FIG. 33 – CONNECTION DIAGRAM STSTEM WIRING - 3 COMPRESSOR YORK INTERNATIONAL...
Page 72: Elementary Wiring Diagram Ycas1063 - Ycas1263 (4 Compressor)
Technical Data FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS1063 - YCAS1263 (4 COMPRESSOR) PAGE 76 LD09367 FIG. 34 – ELEMENTARY WIRING DIAGRAM - 4 COMPRESSOR YORK INTERNATIONAL...
Page 73: Fig. 35 - Elementary Wiring Diagram - Across-The-Line Start
FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS1063 - YCAS1263 (4 COMPRESSOR) 035-16253-103 Rev - A LD09369 FIG. 35 – ELEMENTARY WIRING DIAGRAM - ACROSS-THE-LINE START YORK INTERNATIONAL...
Page 74: Fig. 36 - Elementary Wiring Diagram - Wye Delta
FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS1063 - YCAS1263 (4 COMPRESSOR) 035-16253-10 Rev - A LD09370 FIG. 36 – ELEMENTARY WIRING DIAGRAM - WYE DELTA YORK INTERNATIONAL...
Page 75: Fig. 37 - Control Power Transformer Kit
Terminal Block for Customer Low Voltage (Class 2) Connections. See Note 2 2. Contacts must be suitable for switching 24VDC, (Gold Terminal Block for YORK Connections Only contacts recommend). Wiring shall not be run in the same conduit with any line voltage wiring.
Page 76: Fig. 38 - Elementary Wiring Diagram
FORM 201.19-NM6 (804) ELEMENTARY WIRING DIAGRAM YCAS1063 - YCAS1263 (4 COMPRESSOR) LD09371 FIG. 38 – ELEMENTARY WIRING DIAGRAM YORK INTERNATIONAL...
Page 77 Ad- pressed with a YORK P/N 031-00808-000 sup pres sor across the ditionally, con trol wir ing not con nect ed to the Smart Panel should not re lay/con tac tor coil.
Page 78: Fig. 39 - Connection Diagram 4 Compressor
FORM 201.19-NM6 (804) YCAS 0358 - 0418 YCAS1063 - 1263 LD09375 FIG. 39 – CONNECTION DIAGRAM 4 COMPRESSOR YORK INTERNATIONAL...
Page 79: Fig. 40 - Connection Diagram 4 Compressor
FORM 201.19-NM6 (804) Power Panel LD09376 FIG. 40 – CONNECTION DIAGRAM 4 COMPRESSOR YORK INTERNATIONAL...
Page 80: Connection Wiring Diagram
FORM 201.19-NM6 (804) CONNECTION WIRING DIAGRAM Power Panel LD09377 FIG. 41 – ELEMENTARY WIRING DIAGRAM YORK INTERNATIONAL...
Page 81 FORM 201.19-NM6 (804) CONNECTION WIRING DIAGRAM Electronic Panel LD09378 YORK INTERNATIONAL...
Page 82: Fig. 42 - Connection Diagram 4 Compressor
FORM 201.19-NM6 (804) YCAS1063 - 1263 YCAS 0358 - 0418 LD09379 FIG. 42 – CONNECTION DIAGRAM 4 COMPRESSOR YORK INTERNATIONAL...
Page 83: Fig. 43 - Connection Diagram 4 Compressor
FORM 201.19-NM6 (804) Power Panel LD09380 FIG. 43 – CONNECTION DIAGRAM 4 COMPRESSOR YORK INTERNATIONAL...
Page 84: Fig. 44 - Connection Diagram 4 Compressor
FORM 201.19-NM6 (804) CONNECTION WIRING DIAGRAM Power Panel LD09381 FIG. 44 – CONNECTION DIAGRAM 4 COMPRESSOR YORK INTERNATIONAL...
Page 85 FORM 201.19-NM6 (804) CONNECTION WIRING DIAGRAM Electronic Panel 035-19206-105 Rev - A LD09382 YORK INTERNATIONAL...
Page 86: Elementary Diagram Dxst Direct Drive Control Circuit
FORM 201.19-NM6 (804) ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT 035-16253 Rev - B 2ACE Motor Protector LD09373 FIG. 45 – ELEMENTARY DIAGRAM - DXST DIRECT DRIVE CONTROL CIRCUIT YORK INTERNATIONAL...
Page 87: Fig. 46 - Elementary Diagram - Dxst Direct Drive Control Circuit
FORM 201.19-NM6 (804) ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT 035-16253-102 Rev - B LD09374 FIG. 46 – ELEMENTARY DIAGRAM - DXST DIRECT DRIVE CONTROL CIRCUIT YORK INTERNATIONAL...
Page 88: Connection Diagram System Wiring Standard And Remote Evap Units
FORM 201.19-NM6 (804) CONNECTION DIAGRAM SYSTEM WIRING STANDARD AND REMOTE EVAP UNITS CONNECTION DIAGRAM SYSTEM WIRING YCAS 1063 - 1263 STANDARD & REMOTE EVAP. UNITS 035-19206-106 Rev - LD09383 FIG. 47 – CONNECTION DIAGRAM SYSTEM WIRING YORK INTERNATIONAL...
Page 89: Fig. 48 - Connection Diagram System Wiring
FORM 201.19-NM6 (804) CONNECTION DIAGRAM SYSTEM WIRING STANDARD AND REMOTE EVAP UNITS 035-19206-106 Rev - LD09385 FIG. 48 – CONNECTION DIAGRAM SYSTEM WIRING YORK INTERNATIONAL...
Page 90: Compressor Terminal Box System 1 Through 4
FORM 201.19-NM6 (804) COMPRESSOR TERMINAL BOX SYSTEM 1 THROUGH 4 035-19206-106 Rev - LD09384 FIG. 49 – COMPRESSOR TERMINAL BOX, SYSTEM 1-4 YORK INTERNATIONAL...
Page 91 FORM 201.19-NM6 (804) This page intentionally left blank. YORK INTERNATIONAL...
Page 92: Dimensions - Ycas0693 - Ycas0773 (Si)
Site re stric tions may compromise min i mum clearances indicated below, resulting in un pre dict able air ß ow pat terns and possible di min ished performance. YORK’s unit controls will optimize operation without nui sance high pres sure safety cutout;...
Page 93 FORM 201.19-NM6 (804) DIMENSIONS – YCAS0693 - YCAS0773 (SI) LD03977 CENTER OF GRAVITY (Alum.) CENTER OF GRAVITY (Cop per) YCAS YCAS 3732 3750 1008 0693 0693 3734 1001 3751 1011 0773 0773 LD03978 YORK INTERNATIONAL...
Page 94: Dimensions - Ycas0783 - Ycas0953 (Si)
Site re stric tions may compromise min i mum clearances indicated below, resulting in un pre dict able air ß ow pat terns and possible di min ished performance. YORK’s unit controls will optimize operation without nui sance high pres sure safety cutout;...
Page 95 2235 POWER ELEMENTS FOR SYS. #2 CONTROL PANEL 1453 1229 1453 1453 1400 LD03969 ORIGIN TOP VIEW CENTER OF GRAVITY (Alum.) CENTER OF GRAVITY (Cop per) YCAS YCAS 4015 1011 4059 1020 0783 0783 4001 1006 4047 1020 0873 0873...
Page 96: Dimensions - Ycas1063 (Si)
Site re stric tions may compromise min i mum clearances indicated below, resulting in un pre dict able air ß ow pat terns and possible di min ished performance. YORK’s unit controls will optimize operation without nui sance high pres sure safety cutout;...
Page 97 FORM 201.19-NM6 (804) DIMENSIONS – YCAS1063 (SI) LD04017 CENTER OF GRAVITY (Alum.) CENTER OF GRAVITY (Cop per) YCAS YCAS 5738 1119 5745 1119 1063 1063 LD04018 YORK INTERNATIONAL...
Page 98: Dimensions - Ycas1093 (Si)
Site re stric tions may compromise min i mum clearances indicated below, resulting in un pre dict able air ß ow pat terns and possible di min ished performance. YORK’s unit controls will optimize operation without nui sance high pres sure safety cutout;...
Page 99 FORM 201.19-NM6 (804) DIMENSIONS – YCAS1093 (SI) LD03993 CENTER OF GRAVITY (Alum.) CENTER OF GRAVITY (Cop per) YCAS YCAS 5182 1120 5198 1119 1093 1093 LD03994 YORK INTERNATIONAL...
Page 100: Dimensions - Ycas1163 - Ycas1263 (Si)
Site re stric tions may compromise min i mum clearances indicated below, resulting in un pre dict able air ß ow pat terns and possible di min ished performance. YORK’s unit controls will optimize operation without nui sance high pres sure safety cutout;...
Page 101 FOR SYS. #2 & #4 CONTROL PANEL 1453 1453 1422 1453 1422 1422 ORIGIN TOP VIEW LD04001 CENTER OF GRAVITY (Alum.) CENTER OF GRAVITY (Cop per) YCAS YCAS 5438 1108 5449 1109 1163 1163 5440 1108 5453 1109 1263 1263...
Page 102: Technical Data
(1.3 m) (2 m) LD09409 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. 55 – CLEARANCES YORK INTERNATIONAL...
Page 103: Weight Distribution And Isolator Mounting Positions
WEIGHT DISTRIBUTION AND ISOLATOR MOUNTING POSITIONS Aluminium Fin and Black Fin Coils Models YCAS0693EC – YCAS0953EC LD04126 LD04126 Models YCAS1063EC – YCAS1263EC LD04127 ALUMINUM FIN COIL WEIGHT DISTRIBUTION BY MODEL ( KGS ) YCAS TOTAL 0693 1,019 1,066 — — —...
Page 104: Fig. 56 - Cp-2-Xx
Purple CP-2-27 1,500 680.4 1.06 26.9 Orange CP-2-28 1,800 816.4 1.02 25.9 Green CP-2-31 2,200 997.9 0.83 21.0 Gray CP-2-32 2,600 1,179.3 0.74 18.7 White CP-2-35 3,000 1,360.8 0.70 17.7 Gold ISOLATOR DETAILS LD01089 FIG. 56 – CP-2-XX YORK INTERNATIONAL...
Page 105: Fig. 57 - Isolator Details
AWMR-2-531 2552 1157.6 AWMR-1-552 1900 861.8 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 11NC 50-553 AWMR-2 7-1/2 3-3/4 9-1/2 14-1/2 7-1/4 10NC 50-553 FIG. 57 – ISOLATOR DETAILS YORK INTERNATIONAL...
Page 106 (499.4) (158.7)(117.6) (41.4) (69.8) (76.2) (12.7) (127.0) (14.4) (9.6) RD-4 BLACK 1,500 (681.0) 2,250 (1021.5) 0.25 0.50 * HD dimension applies to double deﬂ ection Type RD mountings only. GREEN 3,000 (1362.0) (6.3) (12.7) RD-4 GRAY 4,000 (1816.0) YORK INTERNATIONAL...
Page 107 WEIGHT DISTRIBUTION AND ISOLATOR MOUNTING POSITIONS Copper Fin Condenser Coils Models YCAS0693EC – YCAS0953EC LD04126 Models YCAS1063EC – YCAS1263EC LD04127 COPPER FIN COIL WEIGHT DISTRIBUTION BY MODEL ( KGS ) YCAS Total 1,075 1,051 1,137 — — — — —...
Page 108: Fig. 58 - Cp-2-Xx
Purple CP-2-27 1,500 680.4 1.06 26.9 Orange CP-2-28 1,800 816.4 1.02 25.9 Green CP-2-31 2,200 997.9 0.83 21.0 Gray CP-2-32 2,600 1,179.3 0.74 18.7 White CP-2-35 3,000 1,360.8 0.70 17.7 Gold ISOLATOR DETAILS LD01089 FIG. 58 – CP-2-XX YORK INTERNATIONAL...
Page 109: Fig. 59 - Isolator Details
AWMR-2-531 2552 1157.6 AWMR-1-552 1900 861.8 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 11NC 50-553 AWMR-2 7-1/2 3-3/4 9-1/2 14-1/2 7-1/4 10NC 50-553 FIG. 59 – ISOLATOR DETAILS YORK INTERNATIONAL...
Page 110 (499.4) (158.7)(117.6) (41.4) (69.8) (76.2) (12.7) (127.0) (14.4) (9.6) RD-4 BLACK 1,500 (681.0) 2,250 (1,021.5) 0.25 0.50 * HD dimension applies to double deﬂ ection Type RD mountings only. GREEN 3,000 (1,362.0) (6.3) (12.7) RD-4 GRAY 4,000 (1,816.0) YORK INTERNATIONAL...
Page 111 Aluminium Fin and Black Fin Condenser Coils with Silencer Kit Models YCAS0693EC – YCAS0953EC LD04126 Models YCAS1063EC – YCAS1263EC LD04127 ALUMINUM FIN WITH OPTIONAL SILENCER KIT WEIGHT DISTRIBUTION BY MODEL ( KGS ) YCAS Total 1,075 1,051 1,137 — — — —...
Page 112: Fig. 60 - Cp-2-Xx
Purple CP-2-27 1,500 680.4 1.06 26.9 Orange CP-2-28 1,800 816.4 1.02 25.9 Green CP-2-31 2,200 997.9 0.83 21.0 Gray CP-2-32 2,600 1,179.3 0.74 18.7 White CP-2-35 3,000 1,360.8 0.70 17.7 Gold ISOLATOR DETAILS LD01089 FIG. 60 – CP-2-XX YORK INTERNATIONAL...
Page 113: Fig. 61 - Isolator Details
AWMR-2-531 2552 1157.6 AWMR-1-552 1900 861.8 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 11NC 50-553 AWMR-2 7-1/2 3-3/4 9-1/2 14-1/2 7-1/4 10NC 50-553 FIG. 61 – ISOLATOR DETAILS YORK INTERNATIONAL...
Page 114 (499.4) (158.7)(117.6) (41.4) (69.8) (76.2) (12.7) (127.0) (14.4) (9.6) RD-4 BLACK 1,500 (681.0) 2,250 (1,021.5) 0.25 0.50 * HD dimension applies to double deﬂ ection Type RD mountings only. GREEN 3,000 (1,362.0) (6.3) (12.7) RD-4 GRAY 4,000 (1,816.0) YORK INTERNATIONAL...
Page 115 Copper Fin Condenser Coils with Silencer Kit Models YCAS0693EC – YCAS0953EC LD04126 Models YCAS1063EC – YCAS1263EC LD04127 COPPER FIN COIL with optional silencer kit Weight Distribution by Model ( KGs ) YCAS Total 1,075 1,051 1,137 — — — —...
Page 116: Fig. 62 - Cp-2-Xx
Purple CP-2-27 1,500 680.4 1.06 26.9 Orange CP-2-28 1,800 816.4 1.02 25.9 Green CP-2-31 2,200 997.9 0.83 21.0 Gray CP-2-32 2,600 1,179.3 0.74 18.7 White CP-2-35 3.000 1,360.8 0.70 17.7 Gold ISOLATOR DETAILS LD01089 FIG. 62 – CP-2-XX YORK INTERNATIONAL...
Page 117: Fig. 63 - Isolator Details
AWMR-2-531 2552 1157.6 AWMR-1-552 1900 861.8 AWMR-2-532 3000 1360.8 LD02974 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 11NC 50-553 AWMR-2 7-1/2 3-3/4 9-1/2 14-1/2 7-1/4 10NC 50-553 FIG. 63 – ISOLATOR DETAILS YORK INTERNATIONAL...
Page 118 (499.4) (158.7)(117.6) (41.4) (69.8) (76.2) (12.7) (127.0) (14.4) (9.6) RD-4 BLACK 1,500 (681.0) 2,250 (1,021.5) 0.25 0.50 * HD dimension applies to double deﬂ ection Type RD mountings only. GREEN 3,000 (1,362.0) (6.3) (12.7) RD-4 GRAY 4,000 (1,816.0) YORK INTERNATIONAL...
Page 119: Installation Instructions For Vmc Series Awr/Awmr And Cp Restrained Mountings
1/4" shim be tween the upper load plate and vertical up rights. Lower the equip ment on the blocking or shimmed isolators. Complete piping and ﬁ ll equipment with wa ter, re frig er ant, etc. YORK INTERNATIONAL...
Page 120: Refrigerant Flow Diagram
The high pressure oil-free vapor is fed to the ing to the evaporator. air cooled condenser coil where the heat is re moved. On economized models, the fully con densed liquid enters the econ o miz er. YORK INTERNATIONAL...
Page 121: Process And Instrumentation Diagram
DIFFERENTIAL PRESSURE CUTOUT CONDENSER COIL COOLER DISCHARGE PRESSURE FAN CONTROL DISPLAY VALUE OIL COOLER COIL HIGH PRESSURE LOAD LIMITING OIL SEPARATOR HIGH TEMPERATURE CUTOUT LOW PRESSURE CUTOUT LOW TEMPERATURE CUTOUT LD09429 FIG. 65 – PROCESS AND INSTRUMENTATION DIAGRAM YORK INTERNATIONAL...
Page 122: 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. 66 – COMPONENT LOCATIONS YORK INTERNATIONAL...
Page 123: Component Locations - 4 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 LD05024 FIG. 66 – COMPONENT LOCATIONS (CONT’D) YORK INTERNATIONAL...
Page 124: Compressor Components
OIL FILTER LOCKING BOLT COVER PLATE OIL FILTER BLEED & EVACUATION POINT LIFTING LUG THREADED HOLE HEATER ECONOMIZER GAS IN DISCHARGE CASE DISCHARGE GAS OUT EVACUATION PORT OIL INLET FROM CONDENSER LD03668 COOLING COIL FIG. 67 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
Page 125: Fig. 68 - Compressor Components
FORM 201.19-NM6 (804) COMPRESSOR COMPONENTS – CONT’D LD03669 FIG. 68 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
Page 126: Fig. 69 - Compressor Components
Technical Data FORM 201.19-NM6 (804) COMPRESSOR COMPONENTS – CONT’D LD03670 FIG. 69 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
Page 127: Fig. 70 - Compressor Components
FORM 201.19-NM6 (804) COMPRESSOR COMPONENTS – CONT’D MALE ROTOR DISCHARGE CHECK VALVE LD06079 RELIEF VALVE FIG. 70 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
Page 128: Fig. 71 - 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. 71 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
Page 129: Fig. 72 - Compressor Components
FORM 201.19-NM6 (804) COMPRESSOR COMPONENTS – CONT’D MOTOR ROTOR / MALE ROTOR LOCKING KEY O-RING MALE ROTOR SLIDE VALVE RELIEF O-RING RETURN VALVE SPRING FEMALE ROTOR ECONOMIZER SLIDE VALVE SUPPORT PLUG RINGS LD03672 FIG. 72 – COMPRESSOR COMPONENTS YORK INTERNATIONAL...
Page 130: System Startup Checklist
Technical Data FORM 201.19-NM6 (804) SYSTEM STARTUP CHECKLIST If it is necessary to add oil, con nect a YORK oil pump to the charging valve on the oil sep a ra tor, JOB NAME: _____________________________ but do not tight en the ﬂ are nut on the delivery SALES ORDER #: ________________________ tub ing.
Page 131: Panel Checks
Refrigerant R-22 leav ing wa ter tem per a ture. Do Not Use YCAS 7. Assure that the CLK jumper J18 on the Mi cro - Motor Current Av- pro ces sor Board is in the ON position (Top 2...
Page 132: Initial Start-Up
This Liq Line Temp = ºF (ºC) is due to the com pres sor com ing up to speed and Subcooling = ºF (ºC) lubrication chang ing from liq uid re frig er ant to YORK INTERNATIONAL...
Page 133: Checking Economizer Superheat
(IF APPLICABLE) (15 TON TXV) load and unload to control water temperature, the chill er is ready to be placed into operation. The economizer superheat should be checked to as sure YORK INTERNATIONAL...
Page 134: Section 8 - Micro Panel Contents
This switch shuts down the entire chiller when placed in the OFF position. The switch must be ON for the chiller to operate. The systems will not pump down at shutdown when the UNIT switch is switched OFF. YORK INTERNATIONAL...
Page 135: Introduction & Physical Description
The YORK Screw Chiller Control Panel is a mi cro pro - ces sor based control system ﬁ tted to YCAS liq uid chill- YCAS chillers each have a single split circuit evap o ra tor ers.
Page 136: 1.3 Unit (Chiller) On / Off Switch
(setpoints, clock, cutouts, etc.) I/O Ex pan sion Board which multiplexes them and then are not lost during a power failure or shutdown period feeds them to the Microprocessor Board. re gard less of the time involved. YORK INTERNATIONAL...
Page 137: Circuit Breakers
The second I/O Expansion Board is used only on 3 and trols. 4 compressor YCAS chillers. Due to limited output and • CB1, CB2, and CB3 allows removal of control pow er input capabilities of the main Microprocessor Board, an...
Page 138: 1.8 Transformers
M1 and M2 contacts, the last 2 faults will show Low CURR/MP/HP, but will have no value for trouble- shooting. The information contained in HISTORY BUFFER #3 will be use- ful on troubleshooting the cause of the Mo tor Pro tec tor fault. YORK INTERNATIONAL...
Page 139: Fig. 73 - Motor Protection Module
SWITCH PUSHED TO THE LEFT SIDE VIEW INDICATES ON (SWITCHES PLACED IN THE ON POSITION ADD TO EQUAL THE OVERLOAD SETTING VALUE. FOR EXAMPLE, IF SWITCH 2 AND 128 ARE ON, THE DISPLAY WILL FLASH HA130) FIG. 73 – MOTOR PROTECTION MODULE YORK INTERNATIONAL...
Page 140: Ems/Bas Controls
Current Limit may be viewed on the the de vice must be sup pressed with a EMS Current Lim it ing Dis play under sup pres sor YORK Part Number 031- the Mo tor Current Key (see Sec tion 00808-000 across the in duc tive coil.
Page 141 For example, with a programmed setpoint of 44°F (7°C), with a sup pres sor YORK Part Num ber after a 4 second pulse and a programmed maximum off set 031-00808-000 across the in duc tive of 40°F (22°C), the temperature offset would equal:...
Page 142: Microprocessor Board Layout
NOTE : Dimple is positioned at top edge (3A) Dip Switch Set (8 switches) System Switches S2 = System 1 S3 = System 2 S2 to S5 S4 = System 3 S5 = System 4 FIG. 74 – COMPONENT LAYOUT YORK INTERNATIONAL...
Page 143: Logic Section Layout
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) Circuit Breakers FIG. 75 – LOGIC SECTION LAYOUT YORK INTERNATIONAL...
Page 144: Anti-Recycle Timer
5 minutes. After 5 minutes has elapsed, the heat er will shut off if the discharge temperature rises above 150 °F (66°C) and will turn on when the dis charge tem per a ture is equal to or less than 150 °F (66°C). YORK INTERNATIONAL...
Page 145: Alarms
42. See Fig. 11, Page 36 for the lo ca tion of these 2. In YCAS 3 System models, SYS 2 is assigned ﬁ rst ter mi nals. lag and SYS 3 the second lag. The same lead/lag...
Page 146: Or 4 Compressor Chiller Configuration
The second timer assures that a minimum of 3 minutes elapses from the time the economizer turns off to the next time it is called to turn on again. YORK INTERNATIONAL...
Page 147 FORM 201.19-NM6 (804) This page intentionally left blank. YORK INTERNATIONAL...
Page 148: Status Key: General Status Messages & Fault Warnings
S Y S C O M P R U N N I N G applicable to represent the system number where mes- sag es apply to individual systems. This message indicates that the respective compressor is running due to demand. YORK INTERNATIONAL...
Page 149: Unit Warnings
Once a low battery condition is detected, the only way to run the chiller is to use the Manual Override key - see Section 8.7.4. This al lows re pro gram ming of setpoints, cutouts, and sched ule. YORK INTERNATIONAL...
Page 150: Anticipation Control Status
Therefore, "Automatic" is typically ambient or load conditions occur. See Anticipatory Un- selected and programmed under the loading Controls Page 173 for detailed operation. PROGRAM key. See page 182. YORK INTERNATIONAL...
Page 151: Unit Fault Status Messages
This the chill er must be manually reset. See Section 8.2 feature is programmable and can also be used to shut (page 182). down the chiller at a temperature where continued run- YORK INTERNATIONAL...
Page 152: System Fault (Safety) Status Messages
ﬂ ow switch. backup for the mechanical High Pres sure Cutout in each YCAS chillers require a single ﬂ ow switch wired to the system. The Discharge Pressure Safety is pro gram ma ble control panel.
Page 153: Fig. 76 - Suction Pressure Cutout
130 - 150°F (54 - 66°C). The High Oil Temperature Safety is activated after 2 minutes of compressor operation, after which if oil tem per a ture is above 225°F (107°C) for more than 3 sec onds, the compressor will shut down. YORK INTERNATIONAL...
Page 154 This may result from loss of re frig er ant, a de- fective contactor, power problems, or from a compressor that is not pumping due to a mechanical malfunction. YORK INTERNATIONAL...
Page 155: Printout On Fault Shutdown
R-407C. This safety uses the Evaporator Inlet Refrigerant Temp Sen sors to mon i tor evaporator inlet refrigerant tem per a ture on each system. These sensors are only installed on R-407C units. YORK INTERNATIONAL...
Page 156: Display Keys & Option Switches
M C H L T 4 3 . 8 ° 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
Display Limits: Minimum - 4.6°F (-20.3°C) valve solenoid in the form of a voltage signal. To the Maximum 137.9°F (58.8°C) mi cro pro ces sor, STEP 0 = fully unloaded and STEP 75 = fully loaded. YORK INTERNATIONAL...
Page 158: Motor Current Key
The Options key provides a display of op tions which are Cutout setting at 25°F (-4°C) and is not ad just able. programmed by the po si tions of the S1 Dip Switch es on the Mi cro pro ces sor Board. Proper pro gram ming of YORK INTERNATIONAL...
Page 159: Fig. 78 - Enlarged Photograph Of Dip Switches On Microprocessor Board
A V E R A G I N G E N A B L E D Place the switch in the CLOSED position selects the type of chiller as an air cooled chiller (YCAS). The DO NOT USE THIS POSITION.
Page 160: Function Key
Low Ambient Control Control Refrigerant R-407C Refrigerant R-22 Do Not Use Closed: YCAS YCWS S 1 - 6 H E A T R E C O V E R Y Not Recommended. Recommended. E N A B L E D...
Page 161: Print Keys
“rate control” and “temperature deviation from setpoint” to de ter mine Information available using the Operating Data key is de- when loading/unloading should occur. YORK INTERNATIONAL...
Page 162 – YorkTalk via ISN or Remote Control Center (remote mode). 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 163: Operating Data - Software Version
S Y S R U N T I M E for a YCAS 2 System Chiller. YCAS 3 System models 3 - 4 8 - 1 7 D - H - M - S and YCAS 4 System models provide similar printouts...
Page 164: History Key
No. 1. After the ENTER Key is pressed, a mes sage in- dicating the time and date of the Fault Shut down will appear: 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 L O W A M B I E N T T E M P This message indicates the type of Chiller (YCAS or C U T O U T 2 5 . 0 ° F YCWS) programmed at the time of the fault. (MUST...
Page 166 N U M B E R This message indicates the compressor motor current in amps and as a percentage of Full Load Amps. This message indicates which system was in the lead at the time of the fault. YORK INTERNATIONAL...
Page 167 R E F R I G T E M P 2 8 . 2 ° F This message, which is only displayed if the unit is in R-407C mode, indicates the refrigerant temperature at the inlet of the evaporator. YORK INTERNATIONAL...
Page 168: Fault History Data - Remote Printout
ECONOMIZER TXV SOLENOID An example of the HISTORY Printout is shown be- CONDENSER FAN STAGE low: COMPRESSOR HEATER WYE-DELTA RELAY YORK INTERNATIONAL CORPORATION SYSTEM 2 DATA MILLENNIUM SCREW CHILLER COMPRESSORS STATUS SAFETY SHUTDOWN NUMBER 1 RUN TIME 0- 0-15-26 D-H-M-S...
Page 169: Entry Keys
“AM” or “PM” on the display. For ex- original values will be returned. am ple, pressing the " key when the cursor is on “PM” changes it to “AM.” YORK INTERNATIONAL...
Page 170: Setpoints Keys & Chilled Liquid Control
“Control Range” and is best the slide valve solenoid of each compressor. Voltage de scribed as the maximum acceptable + and - deviation increases with load (0 - approximately 9VDC at full from Setpoint. load). YORK INTERNATIONAL...
Page 171 2nd and 3rd lag compressor will of the mechanism, a position less than 75, possibly 60, be alternately loaded until the leaving chilled liquid could also mean that the compressor is fully loaded. A temperature is satisﬁ ed. YORK INTERNATIONAL...
Page 172 Chill er fault on a Low Wa ter Tem- > 80 % per a ture cut-out under the fol low ing > 90 % conditions: a) if chilled liq uid tem- > 95 % per a ture falls below the low end of the YORK INTERNATIONAL...
Page 173 S Y S D S C H / O I L I N H I B > 108 % S Y S D S C H / O I L I N H I B > 115 % YORK INTERNATIONAL...
Page 174: Local Cooling Setpoints Key
“0” for val ues After the Setpoint and Range is keyed in, press the less than 10°F (or 5.6°C). Press the ENTER Key to store ENTER Key to store the data in memory. the new value in memory. YORK INTERNATIONAL...
Page 175: Clock Keys
Press ENTER to move on to the hour part of the display. Next, key in the time (hours/minutes) using a leading Press ing the Set Time key a second time enters “display” mode in which the cursor will dis ap pear and the “live” clock will be dis played. YORK INTERNATIONAL...
Page 176: Set Schedule / Holiday Key
ON position, all 00.00s should be programmed into the oc ca sion al ly. daily schedule. This can be done manually for in di vid u al days or for all days by pressing Cancel and En ter for the Monday Start/Stop schedule. YORK INTERNATIONAL...
Page 177: Manual Override Key
30 min utes and the fol low ing 2.3, page 149. sta tus message will be ob served: M A N U A L O V E R R I D E YORK INTERNATIONAL...
Page 178: Program Key
ﬁ rst 5 seconds of operation after which if the cut out point is pressed and the display will scroll on to the next pro- is exceeded for 3 seconds, the system will shut down. gram ma ble value. YORK INTERNATIONAL...
Page 179 FORM 201.19-NM6 (804) Normally, air-cooled chillers, such as YCAS chillers, as the compressor runs. For the ﬁ rst 270 sec onds of run- should have the cutout set at 395 PSIG (27 bar) for R22 ning, suction pressure can be lower than the pro grammed and R407C models.
Page 180 This is important when demand limiting is setting and press the Enter key to store the value into crit i cal due to power requirements or limitations in the memory and scroll to the next display. build ing (See also Section 1.10). YORK INTERNATIONAL...
Page 181 S E T P O I N T = 1 2 . 0 º F The EEV superheat setpoint is programmable. The setpoint can be programmed for 9.0ºF (5.0ºC) to 15ºF (8.3ºC) with 12.0ºF (6.6ºC) as the default. YORK INTERNATIONAL...
Page 182: Programming "Default" Values
This will preset all programmable values un der the Program key to values that will allow operation of the chiller under most operating conditions. This al lows quick start-up pro gram ming for typical chilled wa ter ap pli ca tions. YORK INTERNATIONAL...
Page 183: Table 3 - Default Values Table
Imperial Lead / Lag Control Mode Automatic Power Failure Restart Mode Automatic Motor Current Averaging Cutout 30% FLA 110% FLa 70 % FLA 9.0 ºF 15.0 ºF 12.0 ºF Suction Superheat Setpoint 5.0 ºC 8.3 ºC 6.6 ºC YORK INTERNATIONAL...
Page 184: 8.4 Electronic Expansion Valve
The purpose of the EEV is to meter a ﬂ ow of liquid refrigerant into the evaporator to maintain a superheat 120 VAC PILOT SOLENOID EXPANSION VALVE 24 VAC HEAT MOTOR LD09132 FIG. 79 – ELECTRONIC EXPANSION VALVE YORK INTERNATIONAL...
Page 185: 8.5 Eev Operation
ﬁ rst. is the PWM per cent age that will be sent to the ETRE heat motor. This PWM output is the percentage of a 1 second pe ri od that the 24VAC heat motor power signal is energized. YORK INTERNATIONAL...
Page 186 COOLER INLET REFRIG 44.6 DEGF S Y S S E N S O R F A I L U R E LIQUID LINE SOLENOID ECONOMIZER TXV SOLENOID OFF(YCAS) OIL COOLING SOLENOID OFF(YCWS) HEAT RECOVERY SOLENOID OFF(B HR) DISCHARGE COOLING SOLENOID OFF(EC,LT)
Page 187: 8.6 Eev Programming
The Expansion Valve type selection is viewable un der the OP TIONS key. TABLE 4 – PROGRAMMABLE VALUES TABLE (MINIMUM/MAXIMUM) PROGRAM VALUE MODE LOW LIMIT HIGH LIMIT DEFAULT 15.0 12.0 º º º SUPERHEAT SETPOINT (5.0 º º º YORK INTERNATIONAL...
Page 188: 8.7 Eev Troubleshooting
EEV output. · If everything checks out, it is possible that the EEV has failed. If the small charge in the bulb leaks, the valve will not be able to open and the entire EEV must be replaced. YORK INTERNATIONAL...
Page 189: Compressor Condenser Fan Control
13, 15, 17, 19 >295 PSIG <215 PSIG & <85°F 21M, 22M, 23M, 24M 330, 331, 332 8, 9, 10 * At ambients above 85ºF, stages 3, 4, 5, and 6 will all turn on at 240 psig. YORK INTERNATIONAL...
Page 190 <215 PSIG & <85°F 15M, 16M, 17M, 18M, 19M 230, 231, 232 10, 14, 15 SYSTEM 3 IS ALWAYS EQUIPPED WITH 4 FANS. * At ambients above 85ºF, stages 3, 4, 5, and 6 will all turn on at 240 psig. YORK INTERNATIONAL...
Page 191: Compressor Condenser Fan Control
14, 16, 18, 20 >295 PSIG <215 PSIG & <85°F 27M, 28M, 29M, 30M 430, 431, 432 8, 9, 10 * At ambients above 85ºF, stages 3, 4, 5, and 6 will all turn on at 240 psig. YORK INTERNATIONAL...
Page 192: Table 9 - Condenser Fan Control And Fan Contactor Data For Dxst Units
9, 10 14, 16, 18 >295 PSIG <215 PSIG & <85°F 27M, 28M, 29M 430, 431, 432 8, 9, 10 * At ambients above 85ºF, stages 3, 4, 5, and 6 will all turn on at 240 psig. YORK INTERNATIONAL...
Page 193: 8.10 Service Mode: Unit Setup
2ACE motor protector. prior to removing the old EPROM. These values should then be checked ** The chiller must always be programmed for YCAS and programmed into the micro when the new EPROM is installed. *** Heat recovery must always be disabled.
Page 194: Table 11 - Ycas Style G, Across The Line Start - 50 Hz
Micro Panel Contents FORM 201.19-NM6 (804) TABLE 11 – YCAS STYLE G, ACROSS THE LINE START - 50 HZ. 100% FLA Model Volt. Chiller Name- No. Leads per Phase MP OL Value Set Code Plate RLA Of Sys. 0693 Sys 1 & 2...
Page 195: Table 12 - Ycas Style G, Wye Delta Start - 50 Hz
FORM 201.19-NM6 (804) TABLE 12 – YCAS STYLE G, WYE DELTA START - 50 HZ. 100% FLA Model Volt. Chiller Name - No. Leads per Phase MP OL Value Set Code Plate RLA Of Sys. 0693 Sys 1 & 2...
Page 196 (ON and OFF). An example is shown below: S Y S L L S V J 7 - 3 O F F YORK INTERNATIONAL...
Page 197: 8.11 Control Inputs/Outputs
SPARE Microboard / Relay Board 2 J8-5 / TB1-6/5 Evaporator Pump Microboard / Relay Board 2 J8-6 / TB1-4/3 Sys 2 Alarm I/O Expansion J13-1 Sys 1 EEV Heat Motor I/O Expansion J13-2 Sys 2 EEV Heat Motor YORK INTERNATIONAL...
Page 198: Table 14 - Analog Inputs
I/O Expansion J9-2 Sys 2 Fan Pressure Transducer (Heat Recovery only) I/O Expansion J10-6 Sys 2 Oil Temp Sensor I/O Expansion J10-7 Sys 1 Oil Temp Sensor I/O Expansion J11-2 Sys 1 Evaporator Inlet Refrigeration Temp Sensor (R-407c only) YORK INTERNATIONAL...
Page 199: Table 15 - Digital Inputs
Hot Flow Switch (Heat Recovery only) ANALOG OUTPUTS Table 16 lists all the analog outputs and what output board they are on. TABLE 16 - ANALOG OUTPUTS I/O Expansion J2-1 Sys 1 Slide Valve I/O Expansion J12-1 Sys 2 Slide Valve YORK INTERNATIONAL...
Page 200: 8.12 Sensor Calibration Charts
TEST POINTS: Suction Pressure: 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 201: 8.13 Isn Control
DXST Chiller Data Page 8-11 Analog Leaving Chilled Liquid Temp 12-15 Return Chilled Liquid Temp Mixed Chilled Liquid Temp (optional) - YCAS 16-19 Leaving Hot Liquid Temp - YCWS Hot Liquid Temp - Heat Recovery 20-23 Sys 1 Suction Temperature 24-27...
Page 202 Sys 1 Spare Sys 1 Discharge Cooling Solenoid Status (Euro CAT, Low Temp) Sys 1 Liquid Line Solenoid Valve Status Sys 1 Economizer TXV Solenoid Status (YCAS) Sys 1 Oil Cooling Solenoid Status (YCWS) Sys 1 Condenser Solenoid Status (EURO CAT)
Page 203 Cooling Range 174-177 Sys 1 Discharge Superheat 178-181 Sys 2 Suction Temperature 182-185 Sys 2 Discharge Temperature 186-189 Sys 2 Suction Superheat 190-193 Sys 2 Discharge Superheat Digital S1-7 Expansion Valve Type: 0=TXV, 1=EEV S1-8 SPARE — — — YORK INTERNATIONAL...
Page 204: Table 19 - Isn Operational And Fault Codes
* The operational and fault codes are deﬁ ned in Table 19. Note that this table of fault and operational codes is for all DX products. The codes that are grayed out are not used on this unit. YORK INTERNATIONAL...
Page 205 FORM 201.19-NM6 (804) This page intentionally left blank. YORK INTERNATIONAL...
Page 206: Section 9 - Maintenance
YORK Service Agent. for these regular maintenance requirements and/or en ter into a maintenance agreement with a York In ter na tion al Unit Status: Press the ‘STATUS’ key on the keypad ser vice organization to protect the operation of the unit.
Page 207: Chiller / Compressor Operating Log
Nor mal ly a ‘minor’ service should be carried out every three to six months and a ‘major’ service once a year. It is recommended that your local YORK Service Cen ter is contacted for recommendations for in di vid u al sites. ON-BOARD BATTERY BACK-UP U17 is the Real Time Clock chip that maintains the date/ time and stores customer programmed setpoints.
Page 208: 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 209 * Reserved for customer use for any special site determined requirements. This procedure must be performed at the speciÞ ed time interval by an Industry CertiÞ ed Technician who has been trained and qualiÞ ed to work on this type of YORK equipment.
Page 210: General Periodic Maintenance Checks Standard Units
Check emergency stop. Check motor protectors. Check overload devices. Microprocessor controls: Check fault history. Check fan control function. Check program settings. Check ambient cut-out function. Check HP / LP cutout functions Check pump-down function. Check load / unload function. YORK INTERNATIONAL...
Page 211: Section 10 - Spare Parts
Other spare parts vary depending on the unit mod el. Review the chiller Renewal Parts Manual or Contact your local YORK Sales and Ser vice Center for in for ma tion (Please quote the unit model num ber and serial number).
Page 212: Section 11 - Troubleshooting Guide
Check that the compressor unloads correctly. Measured temperature is incorrect. Check water temp sensor and wiring. Chiller FAULT: VAC Check main supply is stable and within allowable UNDERVOLTAGE Poor main supply voltage. limits. displayed. Check for voltage dip on compressor start. YORK INTERNATIONAL...
Page 213 Check operation of economizer, TXV, and liquid solenoid valve. SYS # CURR LIMITING High compressor motor current Check if liquid temperature is within operating limits. displayed has activated unloading. Check if ambient air temperature is above operating (Compressor current un- limits. loading.) YORK INTERNATIONAL...
Page 214: Limited Warranty York Americas Engineered Systems
Except for reciprocating compressors, which YORK war- rants for a period of one year from date of ship ment, YORK in law or in fact, including the war ran ties of warrants reconditioned or re place ment ma te ri als, or start- merchantability and ﬁ...
Page 215: 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 216 P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA Tele. 800-861-1001 Copyright © by York International Corporation 2004 ALL RIGHTS RESERVED www.york.com Form 201.19-NM6 (804) New Release...

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