York YCAS Series Installation Operation & Maintenance Download

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INSTALLATION, OPERATION & MAIN TE NANCE

AIR-COOLED SCREW LIQUID CHILLERS

New Release

Form 201.19-NM8 (804)

YCAS AIR-COOLED LIQUID CHILLERS

YCAS0685EB THROUGH YCAS0965EB (3 COMPRESSOR)
YCAS1065EB THROUGH YCAS1215EB (4 COMPRESSOR)

STYLE G R407C

50 Hz

I/O BOARD #2 EPROM

031-01798-001

MICROPROCESSOR BOARD

031-01788-002

(YCAS 3 SYSTEM EPROMs)

(YCAS 4 SYSTEM EPROMs)

I/O BOARD #2 EPROM

031-01798-001

MICROPROCESSOR BOARD

031-01788-002

035-20886-000

00258VIP

Summary of Contents for YCAS Series

Page 1: ...QUID CHILLERS YCAS0685EB THROUGH YCAS0965EB 3 COMPRESSOR YCAS1065EB THROUGH YCAS1215EB 4 COMPRESSOR STYLE G R407C 50 Hz I O BOARD 2 EPROM 031 01798 001 MICROPROCESSOR BOARD 031 01788 002 YCAS 3 SYSTEM...

Page 2: ...l owner that information if applicable can be obtained by contacting the nearest YORK Engineered Systems Service office It is the responsibility of operating service personnel to verify the applicabil...

Page 3: ...aterials This individual shall also be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question SAFETY SYMBOLS The following symbols are u...

Page 4: ...Automation System BAS Interface 21 Condenser Coil Protection 21 DX EVAPORATOR AND STARTER OPTIONS 22 UNIT ENCLOSURE OPTIONS 22 FAN OPTIONS 22 SOUND REDUCTION OPTIONS 22 VIBRATION ISOLATION 22 UNIT NOM...

Page 5: ...CONNECTION 50 MULTIPLE POINT POWER SUPPLY CONNECTION 51 OPTIONAL SINGLE POINT POWER SUPPLY CONNECTION AND INDIVIDUAL SYSTEM CIRCUIT BREAKERS 52 ELECTRICAL NOTES 54 WIRING DIAGRAMS 56 WIRING DIAGRAMS...

Page 6: ...4 Cancel Key 169 5 5 Keys 169 6 SETPOINTS KEYS CHILLED LIQUID CONTROL 170 6 1 General 170 6 2 Chilled Liquid Temperature Control 170 6 3 Local Cooling Setpoints Key 174 6 4 Remote Cooling Setpoints K...

Page 7: ...L AND FAN CONTACTOR DATA FOR DXST UNITS 191 TABLE 8 CONDENSER FAN CONTROL AND FAN CONTACTOR DATA FOR DXST UNITS 192 TABLE 9 CONDENSER FAN CONTROL AND FAN CONTACTOR DATA FOR DXST UNITS 192 TABLE 10 SER...

Page 8: ...PRESSOR 71 FIG 34 ELEMENTARY WIRING DIAGRAM 4 COMPRESSOR 72 FIG 35 ELEMENTARY WIRING DIAGRAM ACROSS THE LINE START 73 FIG 36 ELEMENTARY WIRING DIAGRAM WYE DELTA START 74 FIG 37 CONTROL POWER TRANSFORM...

Page 9: ...ce that the failure has occurred within the warranty period and that the unit has been operated within the designed parameters specified All warranty claims must specify the unit model serial number o...

Page 10: ...EQUIPMENT Suitability for Application The unit is intended for cooling water or glycol solutions and is not suitable for purposes other than those specified in these instructions Any use of the equip...

Page 11: ...s recommended Refrigerants and Oils Refrigerants and oils used in the unit are generally non toxic non flammable and non corrosive and pose no special safety hazards Use of gloves and safety glasses a...

Page 12: ...allic conduit General Description TheAir Cooled Screw Chiller utilizes many components which are the same or nearly the same as a standard reciprocating chiller of a similar size This includes modular...

Page 13: ...refrigerant using an external oil separator The pressurized oil from the oil separator is then cooled in the condenser coils and piped back to the compressor for lubrication The compressor design wor...

Page 14: ...alve is controlled by the microprocessor The valve will remain off for the first 3 minutes of compressor operation After 3 minutes of operation the economizer solenoid valve will open if the slide val...

Page 15: ...ection contains ON OFF switch microcomputer keypad and display microprocessor board I O expansion board relay boards and power supply board The options sections contain A control circuit transformer c...

Page 16: ...o senses the low motor current and shuts the system down The micro will try two more starts before locking the system out The system locks out because the motor protector is a manual re set device Aft...

Page 17: ...ompares the Operating Current to the measured half line current The Operating Current is given by 0 65 X factory overload current setting An unloaded compressor condition occurs when any measured half...

Page 18: ...85 Sys 3 50 162 2 219 1 1 0 1 1 0 1 1 0775 50 128 1 173 1 0 1 0 1 1 0 1 0835 Sys 1 50 163 2 220 1 1 0 1 1 1 0 0 0835 Sys 2 3 50 128 1 173 1 0 1 0 1 1 0 1 0905 50 163 2 209 1 1 0 1 0 0 0 1 0965 Sys 1 2...

Page 19: ...64 32 16 8 4 2 1 0685 Sys 1 2 50 99 1 134 1 0 0 0 0 1 1 0 685 Sys 3 50 162 2 219 1 1 0 1 1 0 1 1 0775 50 128 2 173 1 0 1 0 1 1 0 1 0835 Sys 1 50 163 2 220 1 1 0 1 1 1 0 0 0835 Sys 2 3 50 128 2 173 1 0...

Page 20: ...elay is enabled by the microprocessor from Relay Output Board 1 Terminal 8 SYS 1 or Relay Output Board 2 Terminal 6 SYS 2 The 1TR SYS 1 or 2TR SYS 2 contacts open de energizing 1S SYS 1 or 2S SYS 2 1M...

Page 21: ...he fins and other corrosive applications except strong alkalis oxidizers and wet bromine chlorine and fluorine in concentrations greater than 100 PPM The standard display language is English with 4 ot...

Page 22: ...nclosure Heavy gauge welded wire mesh guards mounted on the exterior of the unit Factory or field mounted Louvered panels and wired guards Louvered pan els mounted over the exterior condenser coil fac...

Page 23: ...t Reset Offset Special BAS Reset Offset Required English LCD Keypad Display std Spanish LCD Keypad Display French LCD Keypad Display German LCD Keypad Display Italian LCD Keypad Display Special LCD Ke...

Page 24: ...und Fans Low Sound Fans High Static Fans Special Sound Fans No Final Overspray Paint Required Final Overspray Paint Special Overspray Paint Required No Vibration Isolators 1 Vibration Isolators Seismi...

Page 25: ...not be steam cleaned It is recommended that the unit is periodically in spected during storage INSPECTION Remove any transit packing and inspect the unit to en sure that all components have been deli...

Page 26: ...26 YORK INTERNATIONAL FORM 201 19 NM8 804 88 2250mm UNIT RIGGING CORRECT WRONG LD03514 FIG 3 UNIT RIGGING CORRECT WRONG LD03515 FIG 4 LIFTING LUGS CORRECT WRONG Handling and Storage...

Page 27: ...must be at least 4 3 4 120 mm wide at the contact points This will allow vibration isolators to be fitted if required Any ductwork or attenuators fitted to the unit must not have a total static press...

Page 28: ...from the base rails DO NOT remove the four 3 8 bolts 3 mounting the corner brackets 2 to the frame rails 1 2 2 COMPRESSOR CHANNEL BASE BASE SUPPORT RAIL 3 3 LD09131 FIG 5 COMPRESSOR MOUNTING Where ac...

Page 29: ...at any time Refer to the Technical Data Section for details The liquid must enter the evaporator at the inlet connection The inlet con nection for the evaporator is at the control panel end of the un...

Page 30: ...insulation is recommended supplied independently and controlled by an ambient temperature thermostat set to switch on at 37 F 21 C above the freezing temperature of the liquid The liquid circulation...

Page 31: ...at the outlet of relief valves vent pipe remain clear of obstructions at all times DUCTWORK CONNECTION General Requirements The following ductwork recommendations are intended to ensure satisfactory o...

Page 32: ...install overcurrent protection devices between the supply conductors and the power supply terminals on the unit To ensure that no eddy currents are set up in the power panel the cables forming each 3...

Page 33: ...rminals 29 and 30 Figs 13 and 14 pages 38 and 39 close to indicate that a system is running Alarm Contacts Each system has a voltage free change over contact which will operate to signal an alarm cond...

Page 34: ...34 YORK INTERNATIONAL FORM 201 19 NM8 804 POWER PANEL LAYOUTS TYPICAL FIG 9 POWER PANEL SECTION 00263VIP Installation WYE DELTA TYPICAL...

Page 35: ...35 YORK INTERNATIONAL FORM 201 19 NM8 804 4 FIG 10 OPTION PANEL SECTION OPTION PANEL LAYOUT TYPICAL 00246VIP...

Page 36: ...SECTION FIG 11 LOGIC SECTION LAYOUT LOGIC SECTION LAYOUT 00247VIP ITEM 1 2 3 4 5 6 7 8 DESCRIPTION Microprocessor Board I O Board 2 I O Expansion Board 1 Power Supply Board Relay Output Board 1 Relay...

Page 37: ...37 YORK INTERNATIONAL FORM 201 19 NM8 804 4 FIG 12 LOGIC SECTION LAYOUT WITH CONTROL PANEL LOGIC SECTION LAYOUT WITH CONTROL PANEL 00248VIP...

Page 38: ...rrent PWM Flow Switch System No 1 Run System No 2 Run 13 13 13 13 13 14 15 16 17 18 19 23 24 25 26 27 28 29 30 System No 1 Alarm Contacts Chilled Liquid Circulating Pump Start System No 2 Alarm Contac...

Page 39: ...4 FIG 14 CUSTOMER CONNECTIONS CUSTOMER CONNECTIONS CIRCUIT BREAKERS CB1 CB5 00247VIP MICROPROCESSOR CIRCUIT BOARD RELAY BOARDS I O EXPANSION BOARD 1 TRANSFORMERS CUSTOMER CONNECTIONS Flow Switch Alarm...

Page 40: ...e options panel It is important to check that the correct primary tapping has been used With the supply voltage to the unit turned off remove the lid to the transformer box SECTION 5 COMMISSIONING PRE...

Page 41: ...fitted in the customer s pipework on the evaporator outlet and wired into the control panel correctly using shielded cable There should be a straight run of at least 5 pipe diameters on either side of...

Page 42: ...g a full charge of refrigerant is in the system the bubbles will disappear and be replaced by a solid column of liquid Fan Rotation As discharge pressure rises the condenser fans operate in stages to...

Page 43: ...43 YORK INTERNATIONAL FORM 201 19 NM8 804 5 This page intentionally left blank...

Page 44: ...ons are fully automatic After an initial period at minimum capacity on the lead compressor the control system will adjust the unit load depending on the chilled liquid temperature and rate of temperat...

Page 45: ...45 YORK INTERNATIONAL FORM 201 19 NM8 804 6 This page intentionally left blank...

Page 46: ...RE DROP CHARTS Excessive flow above the max GPM will damage the evaporator GLYCOL CORRECTION FACTORS ETHYLENE GLYCOL PROPYLENE GLYCOL A A B B C C 1 45 1 40 1 35 1 30 1 25 1 20 1 15 1 10 1 05 1 8 1 7 1...

Page 47: ...50 0835 5 0 13 0 21 0 76 0 17 7 50 0905 5 0 13 0 21 0 76 0 17 7 50 0965 5 0 13 0 21 0 76 0 17 7 50 1065 5 0 13 0 27 2 101 0 17 7 50 1135 5 0 13 0 27 2 101 0 17 7 50 1215 5 0 13 0 27 2 101 0 17 7 50 N...

Page 48: ...512 512 512 512 512 512 Condenser Fans Number Ckt 1 Ckt 2 Ckt 3 Ckt 4 3 3 4 4 4 4 4 4 4 4 4 4 5 5 6 4 4 4 4 4 4 4 4 4 4 4 4 Standard Fans Fan Motor HP kW 3 2 6 3 2 6 3 2 6 3 2 6 3 2 6 3 2 6 3 2 6 3 2...

Page 49: ...46 ENTERING HIGH PRESS FANS 18 46 CONDENSER C LOW NOISE FANS 18 46 FAN STANDARD FANS 20 AVAILABLE STATIC HIGH PRESS FANS OPTION 1 85 PRESSURE Pa HIGH PRESS FANS OPTION 2 150 LOW NOISE FANS 10 ELECTRI...

Page 50: ...stem Circuit Breakers opt10 in each of the two Motor Control Centers ELECTRICAL SYSTEM 1 FIELD SUPPLIED WIRING Field Provided Power Supply Factory Provided Lugs Compressor 1 Compressor 3 Fan11 12 Mode...

Page 51: ...ly 2 Suitable for Y D Start and Across the Line Start CE Mark ELECTRICAL SYSTEM 2 FIELD SUPPLIED WIRING Field Provided Power Supply Factory Provided Lugs Compressor 1 Compressor 3 Fan11 12 Model Data...

Page 52: ...B or DS Field Supply Suitable for Y D Start and Across the Line Start See Note 3 See Note 3 on page 54 OPTIONAL SINGLE POINT POWER SUPPLY CONNECTION WITH INDIVIDUAL SYSTEM CIRCUIT BREAKERS 3 AND 4 COM...

Page 53: ...7 8 5 7 25 163 267 857 163 267 857 8 5 7 25 155 267 857 148 267 857 11 5 7 25 128 267 857 128 267 857 8 5 7 25 162 267 857 128 267 857 8 5 7 25 162 267 857 162 267 857 8 5 7 25 ELECTRICAL SYSTEM 2 Com...

Page 54: ...be accommodated by unit wiring lugs The 1 2 or 3 indicate the number of termination points or lugs which are available per phase Actual wire size and number of wires per phase must be determined base...

Page 55: ...OLTAGE CODE MAX KW MAX AMPS CONTROL POWER SUPPLY UNITS WITHOUT STANDARD CONTROL CIRCUIT TRANSFORMER NO OF COMPRESSORS CONTROL POWER SUPPLY MCA MAX LOAD CURRENT MAX DUAL ELEMENT FUSE SIZE NON FUSED DIS...

Page 56: ...YORK INTERNATIONAL FORM 201 19 NM8 804 Technical Data ELEMENTARY WIRING DIAGRAM YCAS0685 YCAS0965 3 COMPRESSOR FIG 20 ELEMENTARY WIRING DIAGRAM DXST DIRECT DRIVE 3 COMPRESSOR LD09350 035 15937 103 Rev...

Page 57: ...NATIONAL FORM 201 19 NM8 804 FIG 21 ELEMENTARY WIRING DIAGRAM ACROSS THE LINE START 3 COMPRESSOR 7 ELEMENTARY WIRING DIAGRAM YCAS0685 YCAS0965 3 COMPRESSOR ACROSS THE LINE START LD09352 LD09352 035 15...

Page 58: ...K INTERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 22 ELEMENTARY WIRING DIAGRAM WYE DELTA START 3 COMPRESSOR ELEMENTARY WIRING DIAGRAM YCAS0685 YCAS0965 3 COMPRESSOR WYE DELTA START 035 15937 103...

Page 59: ...t installed a jumper must be connected between terminals 5 and 1 Device must have a minimum contact rating of 100A at 115 volts A C 5 Alarm contacts are for annunciating alarm unit malfunc tion Contac...

Page 60: ...60 YORK INTERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 24 ELEMENTARY WIRING DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT ELEMENTARY WIRING DIAGRAM YCAS0685 YCAS0965 3 COMPRESSOR LD010031...

Page 61: ...across the relay contactor coil Any contacts connected to flow switch inputs or BAS inputs on terminals 13 19 or TB3 or any other terminals must be sup pressed with a YORK P N 031 00808 000 suppresso...

Page 62: ...62 YORK INTERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 25 CONNECTION DIAGRAM 3 COMPRESSOR CONNECTION DIAGRAM ELEC BOX YCAS0685 YCAS0965 LD010033...

Page 63: ...63 YORK INTERNATIONAL FORM 201 19 NM8 804 7 FIG 26 CONNECTION DIAGRAM 3 COMPRESSOR POWER PANEL LD010034 Power Panel 035 15937 104 Rev E...

Page 64: ...64 YORK INTERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 27 CONNECTION DIAGRAM 3 COMPRESSOR POWER PANEL CONNECTION WIRING DIAGRAM LD010035 Power Panel 035 15937 104 Rev E...

Page 65: ...65 YORK INTERNATIONAL FORM 201 19 NM8 804 7 LD09359 LD010036 Electronic Panel 035 15937 104 Rev E...

Page 66: ...66 YORK INTERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 28 CONNECTION DIAGRAM 3 COMPRESSOR POWER PANEL LD010039 CONNECTION DIAGRAM ELEC BOX YCAS0685 YCAS0965...

Page 67: ...67 YORK INTERNATIONAL FORM 201 19 NM8 804 7 FIG 29 CONNECTION DIAGRAM 3 COMPRESSOR ELECTRONIC PANEL CONNECTION WIRING DIAGRAM LD010037 Power Panel 035 15937 105 Rev D...

Page 68: ...ERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 30 ELEMENTARY DIAGRAM 3 COMPRESSOR DXST DIRECT DRIVE CONTROL CIRCUIT LD010038 Electronic Panel CONNECTION DIAGRAM ELEC BOX YCAS0685 YCAS0965 035 15937...

Page 69: ...69 YORK INTERNATIONAL FORM 201 19 NM8 804 7 FIG 31 ELEMENTARY DIAGRAM DXST DIRECT DRIVE 3 COMPRESSOR LD010040 ELEMENTARY DIAGRAM DXST DRIVE CONTROL CIRCUIT...

Page 70: ...70 YORK INTERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 32 ELEMENTARY DIAGRAM SYSTEM WIRING 3 COMPRESSOR LD010041 ELEMENTARY WIRING DIAGRAM CONT D...

Page 71: ...71 YORK INTERNATIONAL FORM 201 19 NM8 804 7 FIG 33 CONNECTION DIAGRAM STSTEM WIRING 3 COMPRESSOR LD010042 CONNECTION DIAGRAM SYSTEM WIRING YCAS0685 YCAS0965 035 17140 106 Rev A...

Page 72: ...72 YORK INTERNATIONAL FORM 201 19 NM8 804 Technical Data FIG 34 CONNECTION DIAGRAM STSTEM WIRING 3 COMPRESSOR LD010043 CONNECTION DIAGRAM SYSTEM WIRING 035 17140 106 Rev A...

Page 73: ...73 YORK INTERNATIONAL FORM 201 19 NM8 804 7 FIG 35 ELEMENTARY WIRING DIAGRAM ACROSS THE LINE START LD09367 ELEMENTARY WIRING DIAGRAM YCAS1065 YCAS1215 4 COMPRESSOR...

Page 74: ...74 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 36 ELEMENTARY WIRING DIAGRAM WYE DELTA START ELEMENTARY WIRING DIAGRAM YCAS1065 YCAS1215 4 COMPRESSOR LD09369 035 16253 103 Rev A 035 16253 103 Rev A...

Page 75: ...75 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 37 CONTROL POWER TRANSFORMER KIT LD09370 ELEMENTARY WIRING DIAGRAM YCAS1065 YCAS1215 4 COMPRESSOR 035 16253 10 Rev A 035 16253 103 Rev A...

Page 76: ...e stop contact between terminals 5 and 1 If a stop device is not installed a jumper must be connected between terminals 5 and 1 Device must have a minimum contact rating of 100A at 115 volts A C 5 Ala...

Page 77: ...77 YORK INTERNATIONAL FORM 201 19 NM8 804 This page intentionally left blank...

Page 78: ...78 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 39 ELEMENTARY DIAGRAM 4 COMPRESSOR LD010044 ELEMENTARY WIRING DIAGRAM YCAS1065 YCAS1215 4 COMPRESSOR...

Page 79: ...P N 031 00808 000 suppressor across the relay contactor coil UNIT CONTROL MIN MAX DUAL NON FUSED VOLTAGE POWER CIRCUIT ELEMENT DISC SUPPLY AMP FUSE SIZE SWITCH SIZE ALL MODELS 115 1 50 60 20A 20A 250V...

Page 80: ...80 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 41 CONNECTION WIRING DIAGRAM CONNECTION DIAGRAM ELEC BOX YCAS1065 YCAS1215...

Page 81: ...81 YORK INTERNATIONAL FORM 201 19 NM8 804 LD10047 035 16253 104 Rev D Power Panel...

Page 82: ...82 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 42 CONNECTION DIAGRAM 4 COMPRESSOR LD10048 CONNECTION WIRING DIAGRAM 035 16253 104 Rev E Power Panel...

Page 83: ...83 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 43 CONNECTION DIAGRAM 4 COMPRESSOR LD10049 CONNECTION WIRING DIAGRAM 035 16253 104 Rev E Electronic Panel...

Page 84: ...84 YORK INTERNATIONAL FORM 201 19 NM8 804 LD10050 FIG 44 CONNECTION DIAGRAM 4 COMPRESSOR CONNECTION DIAGRAM ELEC BOX YCAS1065 YCAS1215...

Page 85: ...85 YORK INTERNATIONAL FORM 201 19 NM8 804 LD10051 CONNECTION WIRING DIAGRAM Power Panel 035 16253 105 Rev D...

Page 86: ...86 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 45 CONNECTION DIAGRAM CONNECTION WIRING DIAGRAM Power Panel 035 16253 105 Rev D...

Page 87: ...87 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 46 CONNECTION DIAGRAM LD10053 CONNECTION WIRING DIAGRAM Electronic Panel 035 16253 105 Rev D...

Page 88: ...88 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 47 CONNECTION DIAGRAM SYSTEM WIRING LD09373 ELEMENTARY DIAGRAM DXST STARTER CONTROL CIRCUIT 2ACE Motor Protector 035 16253 Rev B 035 16253 102 Rev D...

Page 89: ...89 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 48 CONNECTION DIAGRAM SYSTEM WIRING LD09374 035 16253 102 Rev B ELEMENTARY DIAGRAM DXST FAN CONTROL CIRCUIT 035 16253 102 Rev D...

Page 90: ...90 YORK INTERNATIONAL FORM 201 19 NM8 804 FIG 49 CONNECTION DIAGRAM SYSTEM WIRING LD09383 CONNECTION DIAGRAM SYSTEM WIRING STANDARD AND REMOTE EVAP UNITS 035 19206 106 Rev 035 19206 106 Rev a...

Page 91: ...91 YORK INTERNATIONAL FORM 201 19 NM8 804 LD09385 CONNECTION DIAGRAM SYSTEM WIRING STANDARD AND REMOTE EVAP UNITS 035 19206 106 Rev 035 19206 106 Rev a FIG 49 CONNECTION DIAGRAM SYSTEM WIRING CONT D...

Page 92: ...92 YORK INTERNATIONAL FORM 201 19 NM8 804 LD10054 COMPRESSOR TERMINAL BOX SYSTEM 1 THROUGH 4 035 19206 106 Rev a...

Page 93: ...93 YORK INTERNATIONAL FORM 201 19 NM8 804 This page intentionally left blank...

Page 94: ...without nuisance high pressure safety cutout however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is no higher than on spring...

Page 95: ...ORK INTERNATIONAL FORM 201 19 NM8 804 DIMENSIONS YCAS0685 SI A F E J D I C H B G LD03977 LD03978 CENTER OF GRAVITY Copper YCAS X Y Z 0685 3711 1008 954 CENTER OF GRAVITY Alum YCAS X Y Z 0685 3689 999...

Page 96: ...l optimize operation without nuisance high pressure safety cutout however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is no h...

Page 97: ...TER INLET 10 WATER OUTLET 2438 16 DIA MOUNTING HOLES TYP A B C D E F G H I J K L POWER ELEMENTS FOR SYS 1 3 POWER ELEMENTS FOR SYS 2 CONTROL PANEL 762 762 2235 ORIGIN 806 1453 1453 1453 1229 1400 32 3...

Page 98: ...n without nuisance high pressure safety cutout however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is no higher than on sprin...

Page 99: ...1056 SYS 2 SYS 3 SYS 1 2 SYS 3 Y X G C SYS 1 1400 1229 1453 1453 1453 806 L K J I H G F E D C B A D D 51 1614 1713 10 10 2438 191 A A 762 762 2235 32 32 X Z G C 1727 914 1981 2277 8694 3607 3992 VIEW...

Page 100: ...operation without nuisance high pressure safety cutout however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is no higher than...

Page 101: ...06 J D D 51 2438 191 A A 762 762 32 32 914 1981 2235 WATER OUTLET WATER INLET POWER OPENING 4 57 DIA RIGGING HOLES EACH SIDE CONTROL PANEL POWER ELEMENTS FOR SYS 2 4 FOR SYS 1 3 POWER ELEMENTS 16 DIA...

Page 102: ...804 TECHNICAL DATA CLEARANCES 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 LD09409 FIG 54 CLEAR...

Page 103: ...33 1 124 9 081 YCAS0775 885 778 1 024 617 536 657 885 778 1 168 718 699 1 071 9 817 YCAS0835 898 797 1 028 623 542 662 892 787 1 173 725 705 1 076 9 906 YCAS0905 902 802 1 046 630 544 664 902 802 1 17...

Page 104: ...NS VMC TYPE CP 2 XX See Table below MODEL A B C D E F G H I J K L M N O P YCAS0685 2 31 2 32 2 31 2 26 2 28 2 31 2 35 2 32 2 28 2 32 YCAS0775 2 31 2 28 2 32 2 27 2 26 2 27 2 31 2 28 2 32 2 28 2 28 2 3...

Page 105: ...3 2000 907 2 2 51 AWMR 1 530 2300 1043 3 2 51 AWMR 2 531 2552 1157 6 2 51 AWMR 2 532 3000 1360 8 2 51 ALUMINUM FINS SEISMIC ISOLATOR SELECTIONS VMC MODEL AWMR X XXX See Table below MODEL A B C D E F G...

Page 106: ...OR 139 7 85 8 44 4 73 2 63 5 12 7 104 8 14 4 6 3 RD 3 R 4 6 1 4 4 5 8 1 5 8 2 3 4 3 1 2 5 9 16 3 8 OR 158 7 117 6 41 4 69 8 76 2 12 7 127 0 14 4 9 6 RD 4 DIMENSIONS ins mm HD dimension applies to doub...

Page 107: ...5 952 880 1 103 696 611 735 946 870 1 239 806 783 1 141 10 762 YCAS0905 956 885 1 121 704 613 737 956 885 1 245 811 786 1 144 10 842 YCAS0965 917 848 1 084 693 651 609 435 324 893 810 1 188 807 899 92...

Page 108: ...TIONS VMC TYPE CP 2 XX See Table below MODEL A B C D E F G H I J K L M N O P YCAS0685 2 31 2 32 2 32 2 27 2 31 2 31 2 35 2 32 2 28 2 35 YCAS0775 2 31 2 31 2 32 2 28 2 27 2 28 2 31 2 31 2 35 2 28 2 28...

Page 109: ...2000 907 2 2 51 AWMR 1 530 2300 1043 3 2 51 AWMR 2 531 2552 1157 6 2 51 AWMR 2 532 3000 1360 8 2 51 MODEL A B C D E F G H I J K L M N O P YCAS0685 1 553 2 531 2 530 1 531 1 552 1 553 2 532 2 531 1 552...

Page 110: ...4 4 73 2 63 5 12 7 104 8 14 4 6 3 RD 3 R 4 6 1 4 4 5 8 1 5 8 2 3 4 3 1 2 5 9 16 3 8 OR 158 7 117 6 41 4 69 8 76 2 12 7 127 0 14 4 9 6 RD 4 DIMENSIONS ins mm HD dimension applies to double deflection T...

Page 111: ...0835 952 880 1 103 696 611 735 946 870 1 239 806 783 1 141 10 762 YCAS0905 956 885 1 121 704 613 737 956 885 1 245 811 786 1 144 10 842 YCAS0965 917 848 1 084 693 651 609 435 324 893 810 1 188 807 899...

Page 112: ...CER KIT 1 ISOLATOR SELECTIONS VMC TYPE CP 2 XX See Table below MODEL A B C D E F G H I J K L M N O P YCAS0685 2 31 2 32 2 32 2 27 2 31 2 31 2 35 2 32 2 28 2 35 YCAS0775 2 31 2 31 2 32 2 28 2 27 2 28 2...

Page 113: ...1157 6 2 51 AWMR 2 532 3000 1360 8 2 51 MODEL A B C D E F G H I J K L M N O P YCAS0685 1 553 2 531 2 530 1 531 1 552 1 553 2 532 2 531 1 552 2 532 YCAS0775 1 553 1 553 2 531 1 551 1 532 1 552 1 553 1...

Page 114: ...12 7 104 8 14 4 6 3 RD 3 R 4 6 1 4 4 5 8 1 5 8 2 3 4 3 1 2 5 9 16 3 8 OR 158 7 117 6 41 4 69 8 76 2 12 7 127 0 14 4 9 6 RD 4 DIMENSIONS ins mm HD dimension applies to double deflection Type RD mounti...

Page 115: ...86 841 1 007 929 1 289 882 870 1 235 11 599 YCAS0835 1 020 948 1 164 771 598 939 1 014 938 1 293 888 876 1 239 11 688 YCAS0905 1 024 953 1 182 779 694 847 1 024 953 1 300 893 878 1 241 11 768 YCAS0965...

Page 116: ...SOLATOR SELECTIONS VMC TYPE CP 2 XX See Table 3 page 43 MODEL A B C D E F G H I J K L M N O P YCAS0685 2 31 2 32 2 32 2 27 2 31 2 32 2 35 2 32 2 31 2 35 YCAS0775 2 32 2 31 2 32 2 28 2 28 2 31 2 32 2 3...

Page 117: ...0 907 2 2 51 AWMR 1 530 2300 1043 3 2 51 AWMR 2 531 2552 1157 6 2 51 AWMR 2 532 3000 1360 8 2 51 MODEL A B C D E F G H I J K L M N O P YCAS0685 1 553 2 531 2 531 1 532 1 553 2 530 2 532 2 532 1 553 2...

Page 118: ...7 85 8 44 4 73 2 63 5 12 7 104 8 14 4 6 3 RD 3 R 4 6 1 4 4 5 8 1 5 8 2 3 4 3 1 2 5 9 16 3 8 OR 158 7 117 6 41 4 69 8 76 2 12 7 127 0 14 4 9 6 RD 4 DIMENSIONS ins mm HD dimension applies to double def...

Page 119: ...ree height of the isolator To use the isolator as blocking for the equipment insert a 1 4 shim between the upper load plate and vertical uprights Lower the equipment on the blocking or shimmed isolato...

Page 120: ...entage of the of the liquid passes through an expansion valve into the other side of the economizer where it is evaporated This low pressure liquid subcools the major part of the refrigerant Medium pr...

Page 121: ...PANSION VALVE THERMOSTATIC SOLENOID VALVE BALL VALVE RELIEF VALVE STOP VALVE ANGLE ACCESS PURGE VALVE PLUG PRESSURE SENSOR TEMPERATURE SENSOR REPLACEABLE CORE FILTER DRYER SIGHT GLASS FLOW SWITCH opti...

Page 122: ...CHARGE TEMPERATURE BOP OIL PRESSURE BOT OIL TEMPERATURE BSP SUCTION PRESSURE CCCV COMPRESSOR CAPACITY CONTROL VALVE ECH CRANK CASE HEATER EEH EVAPORATOR HEATER SHPI HIGH PRESSURE CUT OUT STS SUCTION T...

Page 123: ...TURE BSP SUCTION PRESSURE CCCV COMPRESSOR CAPACITY CONTROL VALVE ECH CRANK CASE HEATER EEH EVAPORATOR HEATER SHPI HIGH PRESSURE CUT OUT STS SUCTION TEMPERATURE SENSOR RFTS REFRIGERANT FEED TEMPERATURE...

Page 124: ...HOLE OIL HEATER ECONOMIZER GAS IN DISCHARGE CASE OIL INLET FROM CONDENSER COOLING COIL DISCHARGE GAS OUT OIL FILTER BLEED EVACUATION POINT OIL FILTER COVER PLATE CAPACITY CONTROL SOLENOID CAPACITY CON...

Page 125: ...125 YORK INTERNATIONAL FORM 201 19 NM8 804 COMPRESSOR COMPONENTS CONT D FIG 67 COMPRESSOR COMPONENTS LD03669 7...

Page 126: ...126 YORK INTERNATIONAL FORM 201 19 NM8 804 COMPRESSOR COMPONENTS CONT D FIG 68 COMPRESSOR COMPONENTS LD03670 Technical Data...

Page 127: ...127 YORK INTERNATIONAL FORM 201 19 NM8 804 COMPRESSOR COMPONENTS CONT D FIG 69 COMPRESSOR COMPONENTS LD06079 MALE ROTOR RELIEF VALVE DISCHARGE CHECK VALVE 7...

Page 128: ...EARING 22 BEARING CLAMP NUT 23 BEARING SPACER SLEEVE 24 BEARING PRELOAD SPRING 25 O RING 26 BEARING BORE PLUG 27 DISCHARGE COVER 28 BEARING BORE PLUG 29 BEARING PRELOAD SPRING 30 BEARING SPACER SLEEVE...

Page 129: ...19 NM8 804 COMPRESSOR COMPONENTS CONT D FIG 71 COMPRESSOR COMPONENTS O RING MOTOR ROTOR MALE ROTOR LOCKING KEY MALE ROTOR FEMALE ROTOR O RING RELIEF VALVE ECONOMIZER PLUG SUPPORT RINGS LD03672 SLIDE V...

Page 130: ...on the oil separator but do not tighten the flare nut on the delivery tubing With the bottom suction end of the pump submerged in oil to avoid entrance of air operate the pump until oil drips from th...

Page 131: ..._____ Heat Recovery _______________________________ Sys 1 100 FLA _________________________Amps Sys 2 100 FLA _________________________Amps Sys 3 100 FLA _________________________Amps Sys 4 100 FLA __...

Page 132: ...kPa Temp F C Liq Line Temp F C Subcooling F C Sys 1 Motor Protector Input ________________ Volts Sys 2 Motor Protector Input ________________ Volts Sys 3 Motor Protector Input ________________ Volts...

Page 133: ...er economizer operation and motor cooling Correct superheat setting is approx 10 12 F 6 7 C The superheat is calculated as the difference between the pressure at the Economizer Service Valve on the co...

Page 134: ...history data from recent safety shutdowns ON OFF ROCKER SWITCH 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 wi...

Page 135: ...nt systems are provided on the Mi croprocessor Board External interface is available for control of the chiller via a YORK ISN System or YORK Remote Control Center In addition EMS BAS System connectio...

Page 136: ...f the time involved The battery is a 10 year lithium type but life will de pend upon whether the Real Time Clock s internal clock circuit is energized With the clock OFF a rated life of approximately...

Page 137: ...ut Board which activates and de activates 115VAC control outputs to System 3 and 4 compressors solenoids etc These outputs are controlled in response to commands issued by the Microprocessor Board Rel...

Page 138: ...the Motor Protector dip switches These switches are set at the factory according to motor specifications The module also provides phase rotation protection to as sure the screw compressor does not rot...

Page 139: ..._ _ WHEN OFF AND SEGMENTS FLASH ONE AT A TIME IN A CIRCLE WHEN THE SYSTEM IS RUNNING ON NUMERICAL VALUES 29121A TOP VIEW TOP VIEW 29121A SIDE VIEW 29120A SWITCH PUSHED TO THE LEFT INDICATES ON SWITCHE...

Page 140: ...input is used for purposes of demand limit and operates as follows Closing the input contact for a defined period of time allows reset of the Current Limit downward Contact closure of 1 11 seconds wil...

Page 141: ...set Temp 4 sec 1 sec X 40 F 10 sec Reset Temp 120 Fsec 10 sec 12 F 6 C To determine the new setpoint add the reset to the setpoint programmed into memory In the example above if the programmed setpoin...

Page 142: ...sable Jump Contact Real Time Clock and Battery Backup I C Microprocessor I C label shows version NOTE Dimple is positioned at top edge 3A Dip Switch Set 8 switches System Switches S2 System 1 S3 Syste...

Page 143: ...els PHOTOGRAPH OF 50HZ MODEL LOGIC SECTION 00262VIP 1 2 3 6 7 5 4 8 ITEM 1 2 3 4 5 6 7 8 9 DESCRIPTION Microprocessor Board Back of Keypad I O Expansion Board 2 I O Expansion Board 1 Power Supply Boar...

Page 144: ...SSOR HEATER CONTROL Each compressor has its own heater The heater will be off whenever the compressor is running As soon as the compressor shuts off the heater will turn on and stay on for 5 minutes A...

Page 145: ...Individual system Run Status contacts are not available 1 21 LEAD LAG COMPRESSOR SELECTION The chiller may be set up for AUTO or MANUAL Lead Lag This is accomplished by programming the option under t...

Page 146: ...ing at the TXV over 40 F 4 4 C This should not be confused with subcooling at the liquid valve which should generally be 12 Fto 15 F 6 7 C to 8 3 C The micro monitors the dif ference in pressure ratio...

Page 147: ...147 YORK INTERNATIONAL FORM 201 19 NM8 804 8 This page intentionally left blank...

Page 148: ...hese messages are described in detail below with ex amples of each display In each example is used as applicable to represent the system number where mes sages apply to individual systems 2 2 GENERAL...

Page 149: ...id temperature is below the point where the microprocessor will bring the lead system on and or that the loading sequence has not loaded the chiller far enough to bring the lag system on The lag syste...

Page 150: ...ressure nears the point at which the high pressure cutout would shut the system down When the above message appears discharge pressure has ex ceeded the programmable threshold and the compressor is be...

Page 151: ...TO RE START ON POWER FAILURE is enabled Otherwise the chiller must be manually reset See Section 8 2 page 182 2 5 UNIT FAULT STATUS MESSAGES A Unit Fault will shut the entire chiller down when a prese...

Page 152: ...s monitored to check that flow is present in the evaporator when a compressor is running Any external cycling devices fitted by the customer are connected in series with the flow switch YCAS chillers...

Page 153: ...not be picked up by the High Oil Differential Safety since no flow will cause the dif ferential through the oil piping to drop to zero During normal operation differential oil pressure must be greater...

Page 154: ...when the pilot solenoid is closed 10 times in 2 minutes due to low superheat S Y S H I G H M T R C U R R S Y S H I G H M T R C U R R The High Motor Current Safety protects against exces sively high m...

Page 155: ...essor operation From this time the system will be shut down if average motor current is less than 10 of FLA Compressor Motor Protection Modules and Me chanical High Pressure Cutouts are integral to ea...

Page 156: ...required data about the operation of the chiller This is particularly useful during commissioning mon itoring the operation of the chiller diagnosing potential future problems and service troubleshoot...

Page 157: ...E M P 2 8 2 F S Y S O I L 1 7 6 P S I G S P 6 4 D P 1 9 5 P S I G S Y S O I L 1 5 7 4 F S T 3 1 0 D T 1 2 3 2 F S S A T S U C T 3 2 9 F S U C T S H E A T 1 5 0 F 8 SlidevalvepositionisAPPROXIMATE and...

Page 158: ...to programstheLowAmbient Cutout setting at 25 F 4 C and is not adjustable S 1 2 A M B I E N T C O N T R O L S T A N D A R D 3 5 MOTOR CURRENT KEY Pressing the Motor Current key displays compressor cur...

Page 159: ...TION Incorrect programming may cause damage to the chiller Closed Place the switch in the CLOSED position selects the type of chiller as an air cooled chiller YCAS The switch MUST always be in the CLO...

Page 160: ...tus message The following keys can be scrolled using the Function Key Chilled Liquid Temps System Data Motor Cur rent and Options Closed Placing the switch in the CLOSED position disables motor curren...

Page 161: ...remotely as hard copy printouts The Operating Data Oper Data key provides a real time list of system operating data and programmed settings The History key provides a comprehensive list of op erating...

Page 162: ...tor water pump and the status of the evaporator heater For the evaporator pump contacts ON contacts closed OFF contacts open The Evaporator Heater status is controlled on ambient temperature as follow...

Page 163: ...inter attached In this case an example is shown for a YCAS 2 System Chiller YCAS 3 System models and YCAS 4 System models provide similar printouts for the appropriate number of systems YORK INTERNATI...

Page 164: ...the fault regardless of whether the fault caused a lockout to occur This information is not affected by power failures or manual resetting of a fault lockout The microprocessor stores data for up to...

Page 165: ...9 5 0 P S I G D I S C H A R G E P R E S S U R E U N L O A D 3 7 5 0 P S I G S U C T I O N P R E S S U R E C U T O U T 4 4 0 P S I G S Y S 1 N O F A U L T S S Y S 2 H I G H M T R C U R R S 1 4 Y C A S...

Page 166: ...This message indicates the status of both the evaporator pump signal from the microprocessor and the evapo rator heater This message indicates that a remote device such as a Remote Control Center an...

Page 167: ...S I G S P 6 2 D P 2 7 1 P S I G S S A T S U C T 3 4 7 F S U C T S H E A T 1 0 5 F S S A T D S C H 1 2 9 F D S C H S H E A T 6 2 8 F S Y S S V S T E P 4 0 S Y S C O O L E R I N L E T R E F R I G T E M...

Page 168: ...NOID ON CONDENSER FAN STAGE 3 COMPRESSOR HEATER OFF WYE DELTA RELAY ON DAILY SCHEDULE S M T W T F S HOLIDAY MON START 00 00AM STOP 00 00AM TUE START 00 00AM STOP 00 00AM WED START 00 00AM STOP 00 00AM...

Page 169: ...e returned The Enter key is also used to scroll through available data when using the Program or Set Schedule Holiday keys 5 4 CANCEL KEY When the Cancel key is pressed the cursor will always return t...

Page 170: ...lled liquid temperature and adjusts the chiller cooling capacity to maintain this temperature within a programmed range The capacity is controlled by switching compressors on or off and by varying a l...

Page 171: ...eaving liquid temperature rises above the upper range limit of the Control Range the lead compressor will be started A 0VDC signal is sent to the compressor slide valve control solenoid to allow the i...

Page 172: ...load continues to decrease the lead compressor will continue to unload to a slide valve position of 0 and will pump down and cycle off if the chilled liquid temperature drops below Setpoint Control R...

Page 173: ...ed in the following table Percentage of Motor Current or Discharge Pressure Unload Point Maximum Steps of Unloading After Load Timer Counts to 0 100 1 102 2 104 3 106 4 108 5 115 10 In the case of Sat...

Page 174: ...et Temperature Range key The following message will appear The display indicates the Remote Setpoint which is always equal to the chilled liquid setpoint programmed by the Chilled Liquid Temperature R...

Page 175: ...isplay mode in which the cursor will disappear and the live clock will be displayed 7 CLOCK KEYS O U T O F R A N G E T R Y A G A I N 7 1 GENERAL The microprocessor features a continuously running in t...

Page 176: ...are scrolled through by re petitively pressing the set Schedule Holiday key To re program any of the daily schedules key in the new Start time then if necessary change the associated AM PM by pressin...

Page 177: ...n OFF period This key avoids the need to reprogram the Daily Schedule Once activated Manual Override is only active for a period of 30 minutes and the following status message will be observed M A N U...

Page 178: ...hillers such as YCAS chillers D I S C H A R G E P R E S S U R E C U T O U T 3 9 5 0 P S I G 8 PROGRAM KEY 8 1 GENERAL The Program key is used to program system operating parameters including cutout po...

Page 179: ...seconds of run ning suction pressure can be lower than the programmed cutout but must be greater than This cutout value increases with time until after 270 sec onds it equals the programmed cutout val...

Page 180: ...mitations in the building See also Section 1 10 To program the Suction Pressure Cutout key in the re quired setting and press the Enter key to store the value into memory and scroll the next display H...

Page 181: ...below the programmed limit The message will be removed and additional loading will take place when motor current drops below 90 of the programmed threshold Typically this setpoint should be set at 100...

Page 182: ...utomatically program default values into memory This will preset all programmable values under the Program key to values that will allow operation of the chiller under most operating conditions This a...

Page 183: ...25 0 F Ambient 3 9 Low 0 F 50 0 F 25 0 F Ambient 17 8 C 10 0 C 3 9 C Leaving Chilled Liquid Temp Cutout Water Cooling 36 0 2 2 Glycol Cooling 8 0 F 36 0 F 36 0 F 13 3 C 2 2 C 2 2 C Low Temp Glycol 5...

Page 184: ...or software The superheat setpoint can be programmed on the control panel The purpose of the EEV is to meter a flow of liquid refrigerant into the evaporator to maintain a superheat FIG 78 ELECTRONIC...

Page 185: ...that the 24VAC heat motor power signal is energized MOP FEATURE The controller also has an MOPfeature Maximum Op erating Pressure that overrides superheat control when the MOP setpoint is exceeded Th...

Page 186: ...tdown This safety will lock out a system the first time and will not allow automatic restart ing Following are the messages for all systems OPERATING DATA DISPLAYS The following display relating to EE...

Page 187: ...EV output will be set to 0 When the expansion valve type is set to electronic by closing DIP switch 7 the EEV controller low superheat safety device low superheat safety and the sensor failure safety...

Page 188: ...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 The system shuts down on Low Superheat Verify th...

Page 189: ...t numbers relating to fans energized SYS 1 fan contactors are controlled by Relay Output Board 1 SYS 2 by Relay Output Board 2 SYS 3 is controlled by I O Expansion Board 2 TABLE 5 CONDENSER FAN CONTRO...

Page 190: ...PSIG 195 PSIG 70 F 12M 13M 132 10 S 4 1 7 9 275 PSIG 205 PSIG 75 F 9M 12M 13M 130 132 10 15 5 3 5 7 9 285 PSIG 210 PSIG 80 F 10M 11M 12M 13M 131 132 10 14 1 6 1 3 5 7 9 295 PSIG 215 PSIG 85 F 9M 10M...

Page 191: ...I O Expansion Board 2 FIG 80 CONDENSER FAN CONTROL LAYOUT FOR DXST COMPRESSORS UNITS LD05023 TABLE 7 CONDENSER FAN CONTROL AND FAN CONTACTOR DATA FOR DXST UNITS WITH 4 FANS SYSTEM At ambients above 8...

Page 192: ...PSIG 70 F 29M 432 10 S 4 14 18 275 PSIG 205 PSIG 75 F 27M 29M 430 432 8 10 5 16 18 285 PSIG 210 PSIG 80 F 28M 29M 431 432 9 10 4 6 14 16 18 295 PSIG 215 PSIG 85 F 27M 28M 29M 430 431 432 8 9 10 At am...

Page 193: ...r Drop in Unit Type YCAS or YCWS Heat Recovery Unit Enabled or Disabled Sys 1 100 Full Load Amps 75 to 500 Amps Sys 2 100 Full Load Amps 75 to 500 Amps Sys 1 Motor Protector Input 1 0 to 5 0 volts Sys...

Page 194: ...Phase 100 FLA Of Sys MP OL Value Set 0693 Sys 1 2 50 140 2 151 189 693 Sys 3 50 124 2 134 167 0773 Sys 1 2 50 140 2 151 189 0773 Sys 3 50 183 2 198 124 0783 Sys 1 2 50 124 2 134 167 0783 Sys 3 50 168...

Page 195: ...A Of Sys MP OL Value Set 0693 Sys 1 2 50 140 2 151 189 693 Sys 3 50 124 2 134 167 0773 Sys 1 2 50 140 2 151 189 0773 Sys 3 50 183 2 198 143 0783 Sys 1 2 50 124 2 134 167 0783 Sys 3 50 168 2 181 132 08...

Page 196: ...ample is shown below SERVICE MODE OUTPUT ENABLE The Service Mode allows the user to enable and disable the outputs except compressor To enter the Service Mode turn the UNIT switch off and press PROGRA...

Page 197: ...conomizer TXV Solenoid Microboard Relay Board 1 J9 3 TB1 8 Sys 1 Wye Delta Relay Microboard Relay Board 1 J9 4 TB1 7 SPARE Microboard Relay Board 1 J9 5 TB1 6 5 Evaporator Heater Microboard Relay Boar...

Page 198: ...oboard J15 8 Sys 1 Discharge Pressure Transducer Microboard J16 4 Sys 2 Suction Temp Sensor Microboard J16 6 Sys 1 Suction Temp Sensor Microboard J17 9 Input from I O Expansion Board Microboard J17 10...

Page 199: ...board they are on TABLE 16 ANALOG OUTPUTS Microboard J4 1 Unit Switch Microboard J4 2 PWM Current Limit Microboard J4 3 SPARE Flow Switch Euro CAT only Microboard J4 4 PWM Temp Reset Microboard J4 5 S...

Page 200: ...2 1 93 32 0 0 2 05 36 2 2 2 17 39 3 9 2 30 43 6 1 2 42 46 7 8 2 54 50 10 2 66 68 20 3 22 86 30 3 69 104 40 4 05 TEST POINT Test Point Microboard J11 9 3 8 12 SENSOR CALIBRATION CHARTS Pressure Transdu...

Page 201: ...ero will be sent Tables 18 and 19 show the data values and page listings for this unit 8 13 ISN CONTROL TABLE 17 ISN RECEIVED DATA ISN CONTROL DATA PAGE P03 SETPOINT P04 ISN Current Limit P05 P06 P07...

Page 202: ...URO CAT Sys 1 Heat Recovery Solenoid Status Heat Recovery P44 116 D Sys 1 Wye Delta P45 117 D Sys 2 Spare Sys 2 Discharge Cooling Solenoid Status Euro CAT Low Temp P46 118 D Sys 2 Liquid Line Solenoid...

Page 203: ...58 161 A High Discharge Pressure Cutout P72 162 165 A Remote Leaving Chilled Liquid Setpoint P73 166 169 A Sys 1 Suction Superheat P74 170 173 A Cooling Range P75 174 177 A Sys 1 Discharge Superheat P...

Page 204: ...ing 11 Anti Recycle Timer Active 11 High Oil Temperature 12 Manual Override 12 High Discharge Temperature 13 Suctioin Limiting 13 Improper Phase Rotation 14 Discharge Limiting 14 Low Motor Current MP...

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Page 206: ...tions or ancillary equipment as applicable The Safety Section of this manual should be read carefully before at tempting any maintenance operations on the unit Daily Weekly Maintenance The following m...

Page 207: ...ry between each minor and major service can vary depending on for instance application site conditions and expected operating schedule Normally a minor service should be carried out every three to six...

Page 208: ...re Suction Temperature Suction Superheat Discharge Pressure Actual Discharge Temperature Oil Pressure Oil Temperature FLA Motor Oil Level example Oil Added gallons or liters Inlet Temperature Outlet T...

Page 209: ...ooling1 X Check compressor and evaporator heaters for operation X Sample compressor oil and replace oil if necessary1 X Leak check the chiller1 X Disconnect power source and lock out Check tightness o...

Page 210: ...condition of oil Check discharge superheat Evaporator Check water ow Check water pH glycol strength Check water pressure drop Check heater Air cooled condensers Check for air ow obstructions Brush ns...

Page 211: ...YORK Sales and Service Center for information Please quote the unit model number and serial number When ordering spare parts we will require the following information to ensure the correct parts are...

Page 212: ...displayed value is limit approximately correct The warning message should clear when the ambient air temperature rises above the programmed operating limit Check the programmed settings are correct f...

Page 213: ...OIL PRESS DIFF is displyed High oil differential pressure Ball valve in oil circuit closed Dirty blocked oil lter Check ball valves are open position Check and change oil lter cartridge SYS LOW SUCTI...

Page 214: ...the following costs and expenses 1 Labor to remove or reinstall any equipment materials or components 2 Shipping handling or transportation charges 3 Cost of refrigerant No warranty repairs or replace...

Page 215: ...9 78 172 4 196 91 1 80 176 200 93 3 82 179 6 204 95 6 84 183 2 208 97 8 86 186 8 212 100 0 88 190 4 216 102 2 90 194 220 104 4 92 197 6 224 106 7 94 201 2 228 108 9 96 204 8 232 111 1 98 208 4 236 11...

Page 216: ...1001 www york com P O Box 1592 York Pennsylvania USA 17405 1592 Subject to change without notice Printed in USA Copyright by York International Corporation 2004 ALL RIGHTS RESERVED Form 201 19 NM8 804...

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