York YCUL0045 Installation Operation & Maintenance
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York YCUL0045 Installation Operation & Maintenance

Air-cooled condensing units r22 & hfc - 407c style c (50 hz.)
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AIR-COOLED CONDENSING UNITS
HERMETIC SCROLL
Supersedes: 150.63-NM6 (308)
Form 150.63-NM6 (1020)
INSTALLATION, OPERATION, MAINTENANCE
035-19322-000
YCUL0045 - YCUL0275
R22 & HFC - 407C
STYLE C
(50 Hz.)
29224(R)A
YCUL0045 – YCUL0275 EPROM (031-02050-001 MICROBOARD)
031-02049-001
380-3-50
MODEL ONLY
Standard, Glycol & Metric Models, Combined

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  • Page 1 HERMETIC SCROLL Supersedes: 150.63-NM6 (308) Form 150.63-NM6 (1020) INSTALLATION, OPERATION, MAINTENANCE 035-19322-000 YCUL0045 - YCUL0275 R22 & HFC - 407C STYLE C (50 Hz.) 29224(R)A YCUL0045 – YCUL0275 EPROM (031-02050-001 MICROBOARD) 031-02049-001 380-3-50 MODEL ONLY Standard, Glycol & Metric Models, Combined...
  • Page 2 FORM 150.63-NM6 (1020) IMPORTANT! READ BEFORE PROCEEDING! GENERAL SAFETY GUIDELINES This equipment is a relatively complicated apparatus. which it is situated, as well as severe personal injury or During rigging, installation, operation, maintenance, death to themselves and people at the site. or service, individuals may be exposed to certain com- This document is intended for use by owner-authorized ponents or conditions including, but not limited to:...
  • Page 3 Planned Service Agreement that leverages real time and generalized conditions. In lieu of the tradition- and historical data, delivering performance reporting, al maintenance program, a Johnson Controls YORK corrective actions required and data enabled guidance Conditioned Based Maintenance (CBM) program can for optimal operation and lifecycle assurance.

  • Page 4: Table Of Contents

    FORM 150.63-NM6 (1020) TABLE OF CONTENTS PAGE PRODUCT IDENTIFICATION NUMBER ..........9-10 REFRIGERANT FLOW DIAGRAM ..............11 SPECIFICATIONS ..................12 SECTION INSTALLATION ............... 14 CONTOL WIRING ..................27 ELECTRICAL DATA ..................30 PHYSICAL DATA ................... 40 DIMENSIONS & CLEARANCES ..............44 WEIGHT DISTRIBUTUION ................
  • Page 5 OUTDOOR AMBIENT TEMP. & DP ............. 115 YCUL0045 - YCUL0275 CONDENSER FAN CONTROL USING DP ONLY ....................115 YCUL0045 - YCUL0275 LOW AMBIENT COND FAN CONTROL + DISCHARGE PRESSURE CONTROL ..........116 COMPRESSOR OPERATION – LOAD LIMITING ......118 MICROBOARD DIGITAL INPUTS ............123 MICROBOARD ANALOG INPUTS ............
  • Page 6 FORM 150.63-NM6 (1020) LIST OF TABLES CON'T TABLES PAGE OUTDOOR AIR SENSOR TEMP./VOLT./RESISTANCE ....125 DISCHARGE AIR TEMP. SENSOR, TEMPERATURE/VOLTAGE/ RESISTANCE CORRELATION ............126 SUCTION TEMP. SENSOR, TEMPERATURE/VOLTAGE/ RESISTANCE CORRELATION ............127 KEYPAD PIN ASSIGNMENT MATRIX..........130 TROUBLESHOOTING CHARTS ............132 ISN RECEIVED DATA ................
  • Page 7 MICROBOARD LAYOUT ....................124 MICROBOARD RELAY CONTACT ARCHITECTURE ..........129 PRINTER TO MICROBOARD ELECTRICAL CONNECTIONS ........131 ELEMENTARY DIAGRAM – CONTROL CIRCUIT (YCUL0045 - YCUL0095) ...140 ELEMENTARY DIAGRAM – POWER CIRCUIT (YCUL0045 - YCUL0095) ....142 ELEMENTARY DIAGRAM – MIDDLE MARKET (YCUL0045 - YCUL0095) ....143 CONNECTION DIAGRAM –...
  • Page 8 FORM 150.63-NM6 (1020) LIST OF FIGURES CON'T FIGURES PAGE ELEMENTARY DIAGRAM – CONTROL CIRCUIT (YCUL0211 - YCUL0275) ....160 ELEMENTARY DIAGRAM – POWER CIRCUIT (YCUL0211 - YCUL0275) ....162 ELEMENTARY DIAGRAM – MIDDLE MARKET (YCUL0211 - YCUL0275) ....164 CONNECTION DIAGRAM – MIDDLE MARKET (YCUL0211 - YCUL0275) ....166 JOHNSON CONTROLS...

  • Page 9: Product Identification Number

    5 6 7 8 11 12 13 14 15 BASE PRODUCT TYPE NOMINAL CAPACITY UNIT DESIGNATOR REFRIGERANT VOLTAGE/STARTER DESIGN/DEVELOPMENT LEVEL : YORK : High Efficiency : R-22 : Design Series A : Chiller : R-407C : Engineering : Air-Cooled : 380-415 / 3 / 50...
  • Page 10 FORM 150.63-NM6 (1020) 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 JOHNSON CONTROLS...

  • Page 11: Refrigerant Flow Diagram

    FORM 150.63-NM6 (1020) REFRIGERANT FLOW DIAGRAM LD08997A FIG. 1 – REFRIGERANT FLOW DIAGRAM JOHNSON CONTROLS...

  • Page 12: Specifications

    The compressors incorporate a compli- ant scroll design in both the axial and radial direction. One (YCUL0045-0121) or two (YCUL0125-0275) inde- All rotating parts of the compressors are statically and pendent refrigerant circuits will be finished on each unit.
  • Page 13 FORM 150.63-NM6 (1020) This page intentionally left blank. JOHNSON CONTROLS...

  • Page 14: Section 1 Installation

    To ensure warranty coverage, this The following pages outline detailed procedures to be followed to install and start-up the unit. equipment must be commissioned and serviced by an authorized YORK HANDLING service mechanic or a qualified service person experienced in chiller instal- These condensing units are shipped as completely as- lation.
  • Page 15 YORK Engineering Guide for the specific unit model. Sound blankets for the compressors and low sound fans Recommended clearances for units are given in DIMEN- are available.
  • Page 16 Installation FORM 150.63-NM6 (1020) If separate evaporator blowers are used with respect DISCHARGE AIR SENSOR to each refrigerant system in the condensing unit, then The discharge air sensor and associated connector two air proving must be wired in series across CTB1 hardware is factory supplied but must be field installed.
  • Page 17 System piping should never exceed 40 psi (276 kPa). Refrigerant vapor in the conform to the York DX piping guide form 050.40ES2 or liquid line will measurably reduce valve capacity and ASHRAE refrigeration handbook guidelines. All piping poor system performance can be expected.

  • Page 18: Fitting Equivalent Lengths

    .8 oz./ft. (23 grams/30cm) 1-3/8" (35mm) 8.6 oz./ft. (244 grams/30cm) * Pressure drops or equivalent length values are approximate. If more precise value is desired, consult either the York DX Piping Guide (form 050.40-ES2) or ASHRAE Refrigerant Handbook. JOHNSON CONTROLS...

  • Page 19: Refrigerant Line Connections

    FORM 150.63-NM6 (1020) TABLE 4 – REFRIGERANT LINE CONNECTIONS YCUL REFRIGERANT LINE CONNECTIONS MODEL YCUL SUCTION LIQUID MODEL YCUL SUCTION LIQUID 0045 1-3/8" 7/8" 0211 2-1/8" 1-1/8" 0061 1-5/8" 7/8" 0235 2-1/8" 1-1/8" 0081 2-1/8" 7/8" 0255 2-5/8" 1-1/8" 0095 2-1/8"...
  • Page 20 Installation FORM 150.63-NM6 (1020) TABLE 5 – REFRIGERANT LINE PRESSURE DROPS (ENGLISH) SUCTION LINE LIQUID LINE MODEL SYSTEM NOMINAL VELOCITY NUMBER COPPER PRESSURE NOMINAL COPPER PRESSURE @NOMINAL NUMBER TONS TYPE L DROP TONS TYPE L DROP PSI/100 FT. CAPACITY IN INCHES O.D.

  • Page 21: Refrigerant Line Pressure Drops (Metric)

    FORM 150.63-NM6 (1020) TABLE 6 – REFRIGERANT LINE PRESSURE DROPS (METRIC) SUCTION LINE LIQUID LINE MODEL NOMINAL SYSTEM VELOCITY UMBER COPPER PRESSURE NOMINAL COPPER PRESSURE @NOMINAL NUMBER TYPE L DROP TYPE L DROP kPa/30.5 m CAPACITY IN INCHES O.D. UNLOADED INCHES O.D. kPa/30.5 m YCUL at "Full Load"...
  • Page 22 Installation FORM 150.63-NM6 (1020) TABLE 6 – REFRIGERANT LINE PRESSURE DROPS (METRIC) SUCTION LINE LIQUID LINE VELOCITY SYSTEM NOMINAL NUMBER COPPER PRESSURE NOMINAL COPPER PRESSURE @NOMINAL NUMBER TYPE L DROP TYPE L DROP kPa/30.5 m CAPACITY IN INCHES O.D. UNLOADED INCHES O.D. kPa/30.5 m YCUL at "Full Load"...
  • Page 23 6. Hot gas bypass lines are typically 7/8" for lines up to 40 feet and 1-1/8" for lines over 40 feet (12 meters) in length. The field connections sizes are 7/8" for the optional factory mounted hot gas bypass valve. 7. For more information, please refer to either the York DX Piping Application Guide or the ASHRAE Refrigeration Handbook.

  • Page 24: Multi Point Power Supply Wiring

    Installation FORM 150.63-NM6 (1020) MULTI POINT POWER SUPPLY WIRING – (0045 - 0275) (TERMINAL BLOCK) To Field Installed Liquid Line Solenoid Valves – See Fig. 6 Control Panel Power Panel Circuit #1 Circuit #2 CTB3 Terminal Terminal Block 1 Block 2 (0046-0090) Only Circuit # 2...

  • Page 25: Single Point Power Supply Wiring

    FORM 150.63-NM6 (1020) SINGLE POINT POWER SUPPLY WIRING – (0045 - 0275) (TERMINAL BLOCK, NON FUSED DISCONNECT SWITCH OR CIRCUIT BREAKER) To Field Installed Liquid Line Solenoid Valves – See Fig. 6 Control Panel Power Panel CTB3 Terminal Block NF Disconnect SW or Circuit Breaker Micropanel CTB2...

  • Page 26: Single Point Power Supply Wiring

    Installation FORM 150.63-NM6 (1020) SINGLE POINT POWER SUPPLY WIRING – (0045 - 0275) (TERMINAL BLOCK, NON FUSED DISCONNECT SWITCH, CIRCUIT BREAKERS WITH INDIVIDUAL SYSTEM) To Field Installed Liquid Line Solenoid Valves – See Fig. 6 Control Panel Power Panel CTB3 Circuit Circuit Terminal...

  • Page 27: Contol Wiring

    FORM 150.63-NM6 (1020) CONTROL WIRING AIR PROVING SWITCH AIR PROVING SWITCH REMOTE START/STOP SYS 1 ZONE T'STAT CONTACTS * SYS 2 ZONE T'STAT PWM INPUT PWM INPUT LOAD LIMIT INPUT LOAD LIMIT INPUT *YCUL0125 - YCUL0275 CTB1 – DISCHARGE AIR TEMPERATURE CONTROL CTB1 –...

  • Page 28: Ctb2 Power Panel Field Wiring

    Installation FORM 150.63-NM6 (1020) CONTROL WIRING LD08663 GROUND LIQUID LINE SOLENOID VALVE 1 NEUTRAL SYSTEM 1 120VAC SIGNAL GROUND LIQUID LINE SOLENOID VALVE 1 NEUTRAL SYSTEM 2 (YCUL 0125 - YCUL0275) (YCUL0046 - YCUL0090) 120VAC SIGNAL GROUND LIQUID LINE SOLENOID VALVE 2 NEUTRAL SYSTEM 1 120VAC SIGNAL...

  • Page 29: Discharge Air Sensor Field Wiring

    SENSOR SYS 2 RED (SIGNAL) DRAIN (GND) J5 PIN IDENTIFICATION REFER TO ASSEMBLY INSTRUCTIONS IN FACTORY ON MICRO BOARD SUPPLIED KIT. CABLE, SENSORS AND ELECTRICAL CONNECTIONS ARE INCLUDED. LD08828 YCUL0045-YCUL0275 FIG. 9 – OPTIONAL SUCTION TEMPERATURE SENSOR FIELD WIRING JOHNSON CONTROLS...

  • Page 30: Electrical Data

    Installation FORM 150.63-NM6 (1020) ELECTRICAL DATA SINGLE-POINT POWER SUPPLY CONNECTIONS – YCUL0045 - YCUL0121 One Field Provided Power Supply to the condensing unit. Field connections to Factory Provided Power Terminal Block (standard), Non-Fused Disconnect Switch (optional) or Circuit Breaker (optional).
  • Page 31 FORM 150.63-NM6 (1020) This page intentionally left blank. JOHNSON CONTROLS...

  • Page 32: Multiple Point Power Supply Connections

    Installation FORM 150.63-NM6 (1020) MULTIPLE POINT POWER SUPPLY CONNECTIONS – YCUL0125 - YCUL00275 Two Field Provided Power Supply Circuits to the condensing unit. Field connections to Factory Provided Terminal Blocks (standard), Non- Fused Disconnect Switches (optional), or individual System Circuit Breakers (optional) per electrical system. TABLE 8 –...
  • Page 33 FORM 150.63-NM6 (1020) SYSTEM #2 FIELD SUPPLIED WIRING SYSTEM #2 COMPRESSOR & FAN D.E. FUSE CKT. BKR. COMPR. #1 COMPR. #2 COMPR. #3 FANS INCOMING (LUGS) DISC WIRE RANGE (EA) # 10 - # 1 16.6 16.6 — — # 10 - # 1 16.6 16.6 —...

  • Page 34: Optional Single Point Power Supply Connections

    Installation FORM 150.63-NM6 (1020) OPTIONAL SINGLE-POINT POWER SUPPLY CONNECTIONS – YCUL0045 - YCUL0121 One Field Provided Power Supply to the condensing unit. Field connections to Factory Provided Power Terminal Block (standard), Non-Fused Disconnect Switch (optional) or Circuit Breaker (optional). TABLE 9 – OPTIONAL SINGLE-POINT POWER SUPPLY SYSTEM #1 FIELD SUPPLIED WIRING SYSTEM #1 COMPRESSOR &...
  • Page 35 FORM 150.63-NM6 (1020) This page intentionally left blank. JOHNSON CONTROLS...

  • Page 36: Optional Multiple Point Power Supply Connections

    Installation FORM 150.63-NM6 (1020) OPTIONAL MULTIPLE POINT POWER SUPPLY CONNECTIONS – YCUL0125 - YCUL0275 Two Field Provided Power Supply Circuits to the condensing unit. Field connections to Factory Provided Terminal Blocks (standard), Non- Fused Disconnect Switches (optional), or individual System Circuit Breakers (optional) per electrical system. TABLE 10 –...
  • Page 37 FORM 150.63-NM6 (1020) SYSTEM #2 FIELD SUPPLIED WIRING COMPR. #1 COMPR. #2 COMPR. #3 FANS RLA LRA RLA LRA (EA) 16.6 16.6 — — 19.9 19.9 — — 19.9 19.9 — — 23.9 23.9 — — 23.9 23.9 — — 19.9 19.9 19.9...
  • Page 38 100% of the rated load amps for all other loads included in the circuit. Exception: YCUL0045 and YCUL0061 must have the optional factory overloads installed to use a standard circuit breaker. Otherwise, an HACR-type circuit breakers must be used. Maximum HACR circuit breaker rating is based on 225% of the rated load amps for the largest motor plus 100% of the rated load amps for all other loads included in the circuit.

  • Page 39: Micropanel Power Supply

    FORM 150.63-NM6 (1020) ELECTRICAL DATA TABLE 11 – MICROPANEL POWER SUPPLY OVER CURRENT PROTECTION, UNIT VOLTAGE UNIT VOLTAGE CONTROL POWER SEE NOTE B NF DISC Sw NOTE A MODELS w/o 115-1-60/50 30 A / 240V CONTROL TRANS MODELS w/ 380-1-50 30 A / 480V CONTROL TRANS A.

  • Page 40: Physical Data

    Installation FORM 150.63-NM6 (1020) PHYSICAL DATA (ENGLISH) YCUL0045 - YCUL0275 TABLE 13 – PHYSICAL DATA (ENGLISH) MODEL NUMBER YCUL 0045 0061 0081 0095 0121 0125 0145 General Unit Data Nominal Tons, R-22 12.7 17.5 21.9 26.7 32.1 36.3 40.0 Nominal Tons, R-407C 12.2...
  • Page 41 FORM 150.63-NM6 (1020) MODEL NUMBER YCUL00 0161 0171 0185 0211 0235 0255 0275 43.8 48.0 53.3 58.5 65.3 71.5 77.7 42.6 46.8 52.3 56.5 63.3 69.6 75.8 42.1/42.1 46.8/42.1 56.2/56.2 58.5/48.4 64.7/64.7 71.8/64.7 78.0/78.0 40.6/40.6 45.1/40.6 54.2/54.2 56.4/46.7 62.4/62.4 69.2/62.4 75.2/75.2 58.4/58.4 58.4/58.4...

  • Page 42: Physical Data (Metric)

    Installation FORM 150.63-NM6 (1020) PHYSICAL DATA (METRIC) YCUL0045 - YCUL0275 TABLE 14 – PHYSICAL DATA (METRIC) MODEL NUMBER YCUL 0045 0061 0081 0095 0121 0125 0145 General Unit Data Nominal kW, R-22 44.7 61.5 77.0 93.9 112.9 127.7 140.7 Nominal kW, R-407C 42.9...
  • Page 43 FORM 150.63-NM6 (1020) MODEL NUMBER YCUL 0161 0171 0185 0211 0235 0255 0275 154.0 168.8 187.5 205.7 229.7 251.5 273.3 149.8 164.6 183.9 198.7 222.6 244.8 266.6 19.5/19.5 28.9/19.5 25.7/25.7 26.5/21.8 35.9/35.9 35.9/35.9 35.9/35.9 18.8/18.8 27.9/18.8 24.8/24.8 25.5/21.0 34.6/34.6 34.6/34.6 34.6/34.6 26.5/26.5 26.5/26.5...

  • Page 44: Dimensions & Clearances

    Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 45 FORM 150.63-NM6 (1020) 9 1/4" 1 1/2" POWER PANEL 51 1/2" 3/4" DIA. MOUNTING 37" HOLES (TYP.) CONTROL PANEL 1 1/2" ORIGIN 10 5/16" 78 7/16" TOP VIEW 9" LIQUID 68 3/8" STOP VALVE 1 5/8" O.D. SUCT. CONN. 29" 7/8"...
  • Page 46 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 47 FORM 150.63-NM6 (1020) 9 1/4" 1 1/2" POWER PANEL 51 1/2" 3/4" DIA. MOUNTING 37" HOLES (TYP.) CONTROL PANEL 1 1/2" ORIGIN 73 7/16" 10 5/16" TOP VIEW 87 3/4" 2 1/8" O.D. 9" SUCT. CONN. LIQUID STOP VALVE 29" 7/8"...
  • Page 48 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 49 FORM 150.63-NM6 (1020) 1 1/2" 9 1/4" POWER PANEL 51 1/2" 3/4" DIA. MOUNTING 37" HOLES (TYP.) CONTROL PANEL 1 1/2" ORIGIN 10 5/16" 73 7/16" TOP VIEW 87 3/4" 2 1/8" O.D. 9" SUCT. CONN. LIQUID STOP VALVE 29" 7/8"...
  • Page 50 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 51 FORM 150.63-NM6 (1020) 15 1/4" 1 1/2" POWER PANEL 80 1/2" 3/4" DIA. MOUNTING 50" HOLES (TYP.) CONTROL PANEL 1 1/2" ORIGIN 9 3/4" 99 1/2" TOP VIEW SYS. 2 LIQ. 89 7/8" 9" STOP VALVE 2 1/16" Sys. 2 SYS.
  • Page 52 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 53 FORM 150.63-NM6 (1020) 1 1/2" POWER PANEL 20 1/2" 91" 3/4" DIA. MOUNTING 50" HOLES (TYP.) CONTROL PANEL ORIGIN 1 1/2" 9 3/4" 99 1/2" TOP VIEW 97 3/8" 9" SYS. 1 & 2 2 1/16" SUCT. CONNS. SYS. 1 & 2 LIQ. STOP VALVES 29"...
  • Page 54 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 55 FORM 150.63-NM6 (1020) POWER PANEL 1308 19 DIA. MOUNTING HOLES (TYP.) CONTROL PANEL ORIGIN 1993 TOP VIEW LIQUID 1737 STOP VALVE 1 5/8" O.D. SUCT. CONN. 7/8" O.D. LIQUID CONN. (2) 76 X 76 RIGGING HOLES (EACH SIDE) 2043 2670 MODEL YCUL 0045 LD08732...
  • Page 56 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 57 FORM 150.63-NM6 (1020) POWER PANEL 1308 19 DIA. MOUNTING HOLES (TYP.) CONTROL PANEL ORIGIN 1866 TOP VIEW 2229 2 1/8" O.D. SUCT. CONN. LIQUID STOP VALVE 7/8" O.D. LIQUID CONN. (2) 76 X 76 RIGGING HOLES (EACH SIDE) 2043 2670 SIDE VIEW MODEL YCUL 0081...
  • Page 58 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 59 FORM 150.63-NM6 (1020) POWER PANEL 1308 19 DIA. MOUNTING HOLES (TYP.) CONTROL PANEL ORIGIN 1866 TOP VIEW 2229 2 1/8" O.D. SUCT. CONN. LIQUID STOP VALVE 7/8" O.D. LIQUID CONN. (2) 76 X 76 RIGGING HOLES (EACH SIDE) 2043 2670 LD08719 ALUMINUM COIL COPPER COIL...
  • Page 60 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 61 FORM 150.63-NM6 (1020) POWER PANEL 2045 19 DIA. MOUNTING 1270 HOLES (TYP.) CONTROL PANEL ORIGIN 2527 TOP VIEW SYS. 2 LIQ. 2282 STOP VALVE Sys. 2 SYS. 1 LIQ. CONN. 7/8" O.D. LIQ. CONN. SYS. 1 & 2 SUCT. CONNS. SYS.
  • Page 62 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable airflow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high-pressure safety cutouts; however, the system designer must consider potential performance degradation. Access to the unit control center assumes the unit is no higher than on spring isolators.
  • Page 63 FORM 150.63-NM6 (1020) POWER PANEL 2311 19 DIA. MOUNTING 1270 HOLES (TYP.) CONTROL PANEL ORIGIN 2527 TOP VIEW 2473 SYS. 1 & 2 SUCT. CONNS. SYS. 1 & 2 LIQ. STOP VALVES SYS. 1 & 2 LIQ. CONNS. MODEL YCUL 0211 0235 0255...

  • Page 64: Weight Distributuion

    Installation FORM 150.63-NM6 (1020) WEIGHT DISTRIBUTION ALUMINUM FIN AND PRECOAT COILS LD03736 English Units Aluminum Fin and Precoat Coil Weight Distribution (lbs) YCUL Total 0045 2051 0061 2058 0081 2401 0095 2445 0121 2788 0125 3947 0145 1005 1005 4000 0161 1012 1013...
  • Page 65 FORM 150.63-NM6 (1020) SI Units Aluminum Fin and Precoat Coil Weight Distribution (kg) YCUL Total 0045 0061 0081 1089 0095 1109 0121 1265 0125 1791 0145 1814 0161 1840 0171 1866 0185 1894 0211 2196 0235 2270 0255 2336 0275 2377 JOHNSON CONTROLS...
  • Page 66 Installation FORM 150.63-NM6 (1020) WEIGHT DISTRIBUTION COPPER FIN COILS English Units Copper Fin Coil Weight Distribution (lbs) YCUL Total 0045 2201 0061 2208 0081 2551 0095 2595 0121 2938 0125 1055 1065 1058 1069 4247 0145 1073 1086 1064 1077 4300 0161 1080...

  • Page 67: Isolator Selections

    FORM 150.63-NM6 (1020) ISOLATOR SELECTIONS ALUMINUM FIN AND PRECOAT COILS 1" DEFLECTION ISOLATOR SELECTION - VMC TYPE Aluminum Fin, 1” Isolator Selections VMC Type CP-x-xx YCUL 0045 CP-1-26 CP-1-26 CP-1-26 CP-1-26 0061 CP-1-26 CP-1-26 CP-1-26 CP-1-26 0081 CP-1-27 CP-1-26 CP-1-27 CP-1-26 0095 CP-1-27...
  • Page 68 FORM 150.63-NM6 (1020) ISOLATOR SELECTIONS CON'T ALUMINUM FIN AND PRECOAT COILS 1" DEFLECTION ISOLATOR SELECTION - VMC TYPE Aluminum Fin, Neoprene Mount Selections VMC Type RD YCUL 0045 -3 Grn -3 Red -3 Grn -3 Red 0061 -3 Grn -3 Red -3 Grn -3 Red 0081...
  • Page 69 FORM 150.63-NM6 (1020) ISOLATOR SELECTIONS COPPER FIN COILS 1" DEFLECTION ISOLATOR SELECTION - VMC TYPE Copper Fin, 1” Isolator Selections VMC Type CP-x-xx YCUL 0045 CP-1-27 CP-1-26 CP-1-27 CP-1-26 0061 CP-1-27 CP-1-26 CP-1-27 CP-1-26 0081 CP-1-27 CP-1-26 CP-1-27 CP-1-26 0095 CP-1-27 CP-1-26 CP-1-27...
  • Page 70 Installation FORM 150.63-NM6 (1020) ISOLATOR SELECTIONS CON'T COPPER FIN COILS 1" DEFLECTION ISOLATOR SELECTION - VMC TYPE Copper Fin, Neoprene Mount Selections VMC Type RD YCUL 0045 -3 Grn -3 Red -3 Grn -3 Red 0061 -3 Grn -3 Red -3 Grn -3 Red 0081...
  • Page 71 FORM 150.63-NM6 (1020) This page intentionally left blank. JOHNSON CONTROLS...

  • Page 72: Type Cp Isolator

    Installation FORM 150.63-NM6 (1020) DIMENSIONS LD03839 FIG. 10 – TYPE CP 1 LD03840 FIG. 11 – TYPE CP 2 ISOLATOR SPRING IDENTIFICATION TABLE 1" DEFLECTION SEISMIC MODEL PART- # COLOR MODEL PART # COLOR CP-1-26 308439-26 PURPLE AEQM-95 301055-95 CP-1-27 308439-27 ORANGE AEQM-97...

  • Page 73: Installation And Adjusting

    FORM 150.63-NM6 (1020) INSTALLATION AND ADJUSTING INSTALLATIONS TYPE CP MOUNTING Mountings are shipped completely assembled, ready 4. Set the machine or base on the mountings. The to install. weight of the machine will cause the upper hous- ing of the mount to go down, possibly resting on the lower housing.

  • Page 74: Aeqm" Spring-Flex Isolator

    Installation FORM 150.63-NM6 (1020) DIMENSIONS MODEL # AEQM-97 5-1/2 4-1/2 2-1/2 7-1/4 AEQM-98 5-1/2 4-1/2 2-1/2 7-1/4 AEQM-99 5-1/2 4-1/2 2-1/2 7-1/4 AEQM-1000 8-1/2 6-1/2 4-1/2 8-3/8 AEQM-1300 8-1/2 6-1/2 4-1/2 8-3/8 AEQM-1600 8-1/2 6-1/2 4-1/2 8-3/8 AEQM-1625 8-1/2 6-1/2 4-1/2 8-3/8 AEQM-1628...

  • Page 75: Aeqm" Spring-Flex Mounting

    FORM 150.63-NM6 (1020) “AEQM” SPRING-FLEX MOUNTING INSTALLATION AND ADJUSTMENT INSTRUCTIONS 1. Isolators are shipped fully assembled and are to be Anchor all isolators to floor or subbase as required. spaced and located in accordance with installation For installing on concrete VMC recommends HILTI drawings or as otherwise recommended.

  • Page 76: Pre-Startup Checklist

    Installation FORM 150.63-NM6 (1020) PRE-STARTUP CHECKLIST 8. Visually inspect wiring (power and control). JOB NAME: ______________________________ Wiring MUST meet N.E.C. and local codes. See SALES ORDER #: _________________________ Figures 2- 5, pages 24 - 27.  9. Check tightness of power wiring inside the power LOCATION: _____________________________ panel on both sides of the motor contactors and overloads.

  • Page 77: Initial Startup

    FORM 150.63-NM6 (1020) This unit uses scroll compressors TABLE 15 – SETPOINTS ENTRY LIST which can only operate in one direc- OPTIONS Display Language tion. Failure to observe this will lead Sys 1 Switch to compressor failure. Sys 2 Switch * Ambient Control Local/Remote Mode ...
  • Page 78 Installation FORM 150.63-NM6 (1020) after steady state operation of the chiller has been estab-  3. Allow the compressor to run a short time, being lished, the leaving water temperature has been pulled down ready to stop it immediately if any unusual noise to the required leaving water temperature, and the unit is or adverse conditions develop.
  • Page 79 FORM 150.63-NM6 (1020) This page intentionally left blank. JOHNSON CONTROLS...

  • Page 80: Section 2 Unit Controls

    YORK MILLENNIUM CONTROL CENTER 00065VIP INTRODUCTION MICROPROCESSOR BOARD The YORK MicroComputer Control Center is a micro- The Microprocessor Board is the controller and de- processor based control system designed to provide the cision maker in the control panel. System inputs such entire control for the liquid chiller.
  • Page 81 FORM 150.63-NM6 (1020) The Microprocessor Board energizes on-board relays to “greater than” (>) or “less than” (<). These characters output 120VAC to motor contactors, solenoid valves, indicate the actual values are greater than or less than etc. to control system operation. It also energizes solid the limit values which are being displayed.

  • Page 82: "Status" Key

    Unit Controls FORM 150.63-NM6 (1020) “STATUS” KEY 00066VIP The following messages are displayed when the “Status” S Y S S Y S S W I T C H O F F key is pressed. Following each displayed message is an S Y S S Y S S W I T C H...
  • Page 83 FORM 150.63-NM6 (1020) S Y S 1 Z O N E T H E R M O F F S Y S S U C T L I M I T I N G S Y S S U C T L I M I T I N G S Y S 2 Z O N E T H E R M O F F...
  • Page 84 Unit Controls FORM 150.63-NM6 (1020) S Y S P U M P I N G D O W N S Y S L O W S U C T P R E S S S Y S P U M P I N G D O W N S Y S L O W...
  • Page 85 FORM 150.63-NM6 (1020) The internal motor protector opens at 185°F - 248°F (85°C UNIT SAFETIES: - 120°C) and auto resets. The mechanical HP switch opens at 405 PSIG +/- 10 PSIG (27.92 barg +/- .69 barg) Unit safeties are faults that cause all running compres- and closes at 330 PSIG +/- 25 PSIG (22.75 barg +/- 1.72 sors to be shut down.
  • Page 86 Unit Controls FORM 150.63-NM6 (1020) L O W B A T T E R Y C H E C K P R O G / S E T P / O P T N The Low Battery Warning can only occur at unit power-up.

  • Page 87: Status Key Messages

    FORM 150.63-NM6 (1020) STATUS KEY MESSAGES TABLE 16 – STATUS KEY MESSAGES STATUS KEY MESSAGES General Messages Fault Messages System Safeties Unit Safeties Unit Switch Off Shutdown Remote Controlled System X High Disch Pressure Low Ambient Temp Shutdown Daily Schedule System X Low Suct Pressure 115VAC Undervoltage Shutdown...

  • Page 88: Display/Print Keys

    Unit Controls FORM 150.63-NM6 (1020) DISPLAY/PRINT KEYS 00067VIP following list of operating data screens are viewable The Display/Print keys allow the user to retrieve sys- under the Oper Data key in the order that they are dis- tem and unit information that is useful for monitoring played.
  • Page 89 FORM 150.63-NM6 (1020) S Y S 7 2 . 1 P S I G L O A D T I M E R S E C = 2 2 7 . 0 P S I G U N L O A D T I M E R S E C These displays show suction and discharge pressures...
  • Page 90 EEV pilot solenoid and hot gas solenoid are being turned on by the microboard. Please ISN – York Talk via ISN allows remote load limiting note that hot gas in not available for system 2, so there and temperature reset through an ISN system.

  • Page 91: Operator Data Quick Reference List

    FORM 150.63-NM6 (1020) OPER DATA QUICK REFERENCE LIST TABLE 17 – OPERATION DATA The following table is a quick reference list for infor- mation available under the OPER DATA key. Block of information repeats for each system ** Only displayed when Control Mode programmed for Discharge Air Temperature.
  • Page 92 A sample Operating LIQUID LINE SOLENOID Data printout is shown below. (Note: Not all values are CONDENSER FAN STAGES printed for all models.) DAILY SCHEDULE YORK INTERNATIONAL CORPORATION S M T* W T F S *=HOLIDAY MILLENNIUM CONDENSING UNIT SUN START=00:00AM STOP=00:00AM...
  • Page 93 C . M M C . 0 4 . 0 1 difference is that the Daily Schedule is not printed in the history print and the header will be as follows. YORK INTERNATIONAL CORPORATION MILLENNIUM LIQUID CHILLER SAFETY SHUTDOWN NUMBER 1...
  • Page 94 Unit Controls FORM 150.63-NM6 (1020) The UP and DOWN arrows are used to scroll forward M A N U A L O V E R R I D E M O D E and backward through the history buffer to display the X X X X X X X X X shutdown conditions stored at the instant the fault oc- curred.
  • Page 95 FORM 150.63-NM6 (1020) S E T P O I N T X X X . X ° F S Y S R U N T I M E R A N G E + / - ° F X X - X X - X X - X X D - H - M - S Displays the programmed Setpoint and Range, if the Displays the system run time when the fault occurred.

  • Page 96: "Entry" Keys

    Unit Controls FORM 150.63-NM6 (1020) “ENTRY” KEYS 00068VIP The Entry Keys allow the user to view, change programmed The UP and DOWN arrow keys are also used for pro- values. The ENTRY keys consist of an UP ARROW key, gramming the control panel such as changing numerical DOWN ARROW key, and an ENTER/ADV key.

  • Page 97: "Setpoints" Keys

    FORM 150.63-NM6 (1020) “SETPOINTS” KEYS 00069VIP Programming of the cooling setpoints, daily schedule, Following are the four possible messages that can be and safeties is accomplished by using the keys located displayed after pressing the COOLING SETPOINT key, under the SETPOINTS section. indicating the cooling mode: The three keys involved are labeled COOLING L O C A L...
  • Page 98 +/- the cooling range. This method of control cannot be used unless the unit is equipped This message indicates that the cooling setpoint is under with suction transducers (optional on YCUL0045 - REMOTE control. When under remote control, the cool- YCUL0185).
  • Page 99 FORM 150.63-NM6 (1020) Pressing the COOLING SETPOINTS again will bring Whenever the daily schedule is up the display that allows the Maximum EMS-PWM changed for Monday, all the other Temperature Reset to be programmed. This message is days will change to the new Monday shown below.
  • Page 100 Unit Controls FORM 150.63-NM6 (1020) TABLE 18 – COOLING SETPOINTS PROGRAMMABLE LIMITS AND DEFAULTS SETPOINT VALUE LOW LIMIT HIGH LIMIT DEFAULT 45.0 °F 70.0°F 44.0°F Discharge Air Temp. Setpoint 7.2°C 21.1°C 12.7°C 3.0°F 10.0°F 5.0°F Discharge Air Temp. Range 1.7°C 5.6°C 2.8°C 60 PSIG...
  • Page 101 FORM 150.63-NM6 (1020) A single system chiller MUST have a F A N C O N T R O L jumper between terminals 13 - 17 on P R E S S U R E = X X X P S I G terminal block CTB1.

  • Page 102: Cooling Setpoints, Programmable Limits & Defaults 100 19 Program Key Limits & Defaults

    Unit Controls FORM 150.63-NM6 (1020) • Multiply the sum by 1.25 SYSTEM TRIP VOLTS • Divide by 270A For individual system high current trip programming • The resulting voltage is the value that should be pro- on chillers: grammed • Add the sum of the compressor and fan RLA’s in the system For example, if fan and compressor RLA’s total 180A: •...

  • Page 103: Setpoints Key Quick Reference List

    FORM 150.63-NM6 (1020) OPER DATA QUICK REFERENCE LIST Table 20 provides a quick reference of the setpoints list for the Setpoints Keys. SETPOINTS KEYS Cooling Setpoints Key Schedule/ Program Mode (press key to adv.) Advance Day Key (press enter to adv.) Local/Remote Discharge Mon.

  • Page 104: "Unit" Keys

    Unit Controls FORM 150.63-NM6 (1020) “UNIT” KEYS 00070VIP OPTIONS KEY There are many programmable options under the OP- S Y S S W I T C H O F F TIONS key. The OPTIONS key is used to scroll through S Y S S W I T C H the list of options by repeatedly pressing the OPTIONS...
  • Page 105 FORM 150.63-NM6 (1020) OPTION 3 – AMBIENT CONTROL TYPE: OPTION 6 – DISPLAY UNITS: (YCUL0045 - 0255 ONLY) D I S P L A Y U N I T S I M P E R I A L A M B I E N T...
  • Page 106 Unit Controls FORM 150.63-NM6 (1020) This should only be enabled on European units with soft F A N C O N T R O L start on 2 compressors. This feature modifies the com- A M B I E N T &...
  • Page 107 FORM 150.63-NM6 (1020) Also see the UNIT KEYS PROGRAMMING QUICK S O F T S T A R T REFERENCE LIST in Table 21, Page 108. D I S A B L E D CLOCK This MUST be selected on all chillers without the soft start option.

  • Page 108: Unit Keys Quick Reference List

    TABLE 21 – UNIT KEYS PROGRAMMING QUICK REFERENCE LIST Unit Type Ambient Control (standard or low) (YCUL0016 - 0090 ONLY) (YCUL0045 - 0275) Unit Control Mode Suction Pressure Discharge Air Temp System Manual or Automatic Lead/Lag Control (2 System Discharge Air Temp Control Only...

  • Page 109: Unit Operation

    FORM 150.63-NM6 (1020) UNIT OPERATION CAPACITY CONTROL DISCHARGE AIR TEMPERATURE CONTROL To initiate the start sequence of the unit, all run per- The setpoint in Discharge Air Temperature Control is the missive inputs must be satisfied (air proving/remote temperature the condensing unit will control to within +/- start/stop switch), and no unit or system faults exist.

  • Page 110: Discharge Air Temperature Control 5 & 6 Comp

    Unit Controls FORM 150.63-NM6 (1020) TABLE 22 – DISCHARGE AIR TEMPERATURE CONTROL FOR 5 AND 6 COMPRESSORS (7 AND 8 STEPS) LEAD SYSTEM LAG SYSTEM *STEP COMP 1 COMP 2 COMP 3 COMP 1 COMP 2 COMP 3 ON+HG SEE NOTE 1 SEE NOTE 2 SEE NOTE 3 TABLE 23 –...

  • Page 111: Discharge Air Temperature Control 3 Comp

    FORM 150.63-NM6 (1020) TABLE 24 – DISCHARGE AIR TEMPERATURE CONTROL FOR 3 COMPRESSORS (SINGLE SYSTEM) *STEP COMP 1 COMP 2 COMP 3 ON+HG SEE NOTE 1 TABLE 25 – DISCHARGE AIR TEMPERATURE CONTROL FOR 2 COMPRESSORS (SINGLE SYSTEM) *STEP COMP 1 COMP 2 ON+HG SEE NOTE 1...

  • Page 112: Suction Pressure Control

    Unit Controls FORM 150.63-NM6 (1020) If the suction pressure falls below the Setpoint High SUCTION PRESSURE CONTROL Limit and greater than the Setpoint Low Limit, loading The setpoint in Suction Pressure Control is the suction and unloading do not occur. This area of control is called pressures each individual system on the condensing unit the control range.
  • Page 113 FORM 150.63-NM6 (1020) SYSTEM LEAD/LAG ANTI-COINCIDENCE TIMER (Discharge Air Temp Control Only) This timer is not present on single-system units. Two Lead/lag between systems may be selected to help equal- timing controls are present in software to assure com- ize average run hours between systems on chillers with 2 pressors within a circuit or between systems, do not start refrigerant systems.
  • Page 114 Two safeties are associated with the EEV, the low su- grammed for low ambient operation, the condenser perheat safety and the sensor fault safety. Details are fans will operate as shown in Table 28 (YCUL0045 outlined in the System Safeties section. – YCUL0275)

  • Page 115: Ycul0045 - Ycul0275 Condenser Fan Control Using

    FORM 150.63-NM6 (1020) CONDENSER FAN CONTROL - YCUL0045 – YCUL0275 TABLE 26 – YCUL0045 – YCUL0275 CONDENSER FAN CONTROL USING OUTDOOR AMBIENT TEMPERA- TURE AND DISCHARGE PRESSURE (DISCHARGE PRESSURE CONTROLS WILL NOT FUNC- TION UNLESS THE OPTIONAL DISCHARGE PRESSURE TRANSDUCER IS INSTALLED)

  • Page 116: Discharge Pressure Control

    Unit Controls FORM 150.63-NM6 (1020) CONDENSER FAN CONTROL - YCUL0045 – YCUL0275 TABLE 28 – YCUL0045 - YCUL0275 LOW AMBIENT CONDENSER FAN CONTROL – DISCHARGE PRESSURE CONTROL MICRO BOARD FAN # CONTACTOR FAN STAGE OUTPUT TB-4 SYS 1 SYS 2...
  • Page 117 FORM 150.63-NM6 (1020) This page intentionally left blank . JOHNSON CONTROLS...

  • Page 118: Compressor Operation - Load Limiting

    Unit Controls FORM 150.63-NM6 (1020) Simultaneous operation of Load Lim- LOAD LIMITING iting and EMS-PWM Temperature Load Limiting is a feature that prevents the unit from Reset (described on following pages) loading beyond the desired value. 2 and 4 compressor cannot occur.
  • Page 119 FORM 150.63-NM6 (1020) BAS/EMS DISCHARGE AIRTEMPERATURE RESET USING A VOLTAGE OR CURRENT SIGNAL The Remote Reset Option allows the Control Center of the If a 4-20mA signal is supplied, it is applied to terminals unit to reset the discharge air temperature setpoint using a A+ and A- and jumper JP1 on the I/O board must be installed between pin 1 and 2.

  • Page 120: Field & Factory Electrical Connections - Optional Remote Temperature Reset Board

    Unit Controls FORM 150.63-NM6 (1020) THIS PAGE INTENTIONALLY BLANK JOHNSON CONTROLS...

  • Page 121: Section 3 Service And Troubleshooting

    FORM 150.63-NM6 (1020) SERVICE AND TROUBLESHOOTING type, expansion valve type, and start/hour counters to CLEARING HISTORY BUFFERS be viewed/modified. The ENTER/ADV key is used to The history buffers may be cleared by pressing the HIS- advance through the outputs. Using the UP/DOWN AR- TORY key and then repeatedly pressing the UP arrow ROW keys will turn the respective digital output on/off key until you scroll past the last history buffer choice.

  • Page 122: Service Mode - Chiller Configuration

    SYS 1 MP / HPCO INPUT SYS 2 MP / HPCO INPUT SOFT START REFRIGERANT TYPE The suction pressure transducer is optional on YCUL0045 - YCUL0235. A low pressure switch is standard on these models in EXPANSION VALVE TYPE place of the suction transducer.

  • Page 123: Microboard Digital Inputs

    FORM 150.63-NM6 (1020) TABLE 32 – MICROBOARD DIGITAL OUTPUTS TABLE 30 – MICROBOARD DIGITAL INPUTS *J9-1 30VDC UNREGULATED SUPPLY TB3-2 SYS 1 COMPRESSOR 1 J9-2 UNIT ON/OFF SWITCH TB3-3 SYS 1 LIQUID LINE SOLENOID VALVE OR EEV J9-3 PWM TEMP RESET PILOT SOLENOID OR LOAD LIMIT STAGE 2 ON 3, 5 &...

  • Page 124: Microboard Layout

    Service and Troubleshooting FORM 150.63-NM6 (1020) REAL TIME CLOCK/ BATTERY CLK ON/OFF JUMPER 00770VIP FIG. 19 – MICROBOARD LAYOUT JOHNSON CONTROLS...

  • Page 125: Outdoor Air Sensor Temp./Volt./Resistance

    FORM 150.63-NM6 (1020) CHECKING INPUTS AND OUTPUTS TABLE 34 – OUTDOOR AIR SENSOR TEMPERATURE/VOLTAGE/ DIGITAL INPUTS RESISTANCE CORRELATION TEMP °F VOLTAGE RESISTANCE TEMP C° Refer to the unit wiring diagram. All digital inputs are 85398 connected to J9 of the microboard. The term “digital” re- 72950 fers to two states –...

  • Page 126: Resistance Correlation

    Service and Troubleshooting FORM 150.63-NM6 (1020) TABLE 35 – DISCHARGE AIR TEMP. SENSOR DISCHARGE AIR TEMPERATURE SENSOR TEMPERATURE/VOLTAGE/ RESISTANCE CORRELATION J6-6 = +5 VDC regulated supply to sensor. J6-9 = VDC input signal to the microboard. See Table 35 for voltage readings that correspond to specific discharge temperatures.

  • Page 127: Resistance Correlation

    FORM 150.63-NM6 (1020) Suction Temperature Sensor - System 1 TABLE 36 – SUCTION TEMP. SENSOR TEMPERATURE/VOLTAGE/ RESISTANCE CORRELATION J5-7 = +5 VDC regulated supply to sensor. J5-12 = VDC input signal to the microboard. See Table 36 for voltage readings that correspond TEMP °F VOLTAGE RESISTANCE...
  • Page 128 J4-8 = +5VDC return The suction pressure transducers are optional on J4-9 = drain (shield connection = 0VDC) YCUL0045 - YCUL0185. If the suction transducers are not installed, a mechanical low pressure switch will be System 2 Discharge Transducer installed in its place, and the suction pressure readout on the display will be 0 PSIG when the LP switch is J7-7 = +5VDC regulated supply to transducer.

  • Page 129: Microboard Relay Contact Architecture

    J7-1 = +5VDC return J7-2 = drain (shield connection = 0VDC) If the optional Suction Transducer is not used on the YCUL0045 - YCUL0185 , a Low Pressure switch will be used. Following are the microboard connections for the Low Pressure switch.

  • Page 130: Keypad Pin Assignment Matrix

    Service and Troubleshooting FORM 150.63-NM6 (1020) KEYPAD TABLE 37 – KEYPAD PIN ASSIGNMENT MATRIX KEYPAD PIN CONNECTIONS The operator keypad is connected to the microboard STATUS 1 TO 5 by a ribbon cable, which is connected to J2 on the mi- OPER DATA 1 TO 7 croboard.

  • Page 131: Optional Printer Installation

    “OPER DATA” key or The part number for the printer that is packaged specifi- “HISTORY” key. cally for YORK is P/N 950915576. The cable to connect the printer can either be locally assembled from the parts listed, or ordered directly from WEIGH-TRONIX under part number 287-040018.

  • Page 132: Troubleshooting

    4. Unplug connections at or pressure transducers. Microboard to isolate. 5. Defective Microboard 5. Replace Microboard. or Display board. NOTE: Contact YORK Service before Replacing circuit Boards! “FLOW SWITCH/REM 1. No air flow. 1. Check air flow. STOP NO RUN PERMISSIVE”...
  • Page 133 FORM 150.63-NM6 (1020) TROUBLESHOOTING (CONT’D) PROBLEM CAUSE SOLUTION “LOW SUCTION PRESSURE” 4. TXV defective. 4. Replace TXV. FAULT (CONT’D) 5. Reduced flow of air through 5. Check CFM the evaporator coil. 6. Defective suction pressure 6. Replace transducer/low transducer/low pressure pressure switch or faulty switch or wiring.
  • Page 134 4. Compressor failure 4. Diagnose cause of failure and replace. LACK OF COOLING EFFECT 1. Dirty evaporator surface. 1. Contact the local YORK Low suction pressure will service representative. be observed. 2. Improper CFM through the 2. Verify nominal 400 CFM/ton evaporator coil.

  • Page 135: Maintenance

    Note: at shutdown, the oil level can time and stores customer programmed setpoints. Any- fall to the bottom limit of the oil sight glass. Use YORK time the chiller is to be off (no power to the microboard) “F”...

  • Page 136: Isn Control

    Service and Troubleshooting FORM 150.63-NM6 (1020) ISN CONTROL RECEIVED DATA (CONTROL DATA) TABLE 40 – ISN TRANSMITTED DATA The Middle Market receives 8 data values from the TYPE DATA ISN. The first 4 are analog values and the last 4 are Analog Leaving Chilled Liquid Temp digital values.
  • Page 137 FORM 150.63-NM6 (1020) TABLE 40 – ISN TRANSMITTED DATA (CONT’D) TYPE DATA TYPE DATA Analog Anti-Recycle Time (Programmed) Digital SYS 2 Comp 3 Run Analog Leaving Chilled Liquid Temp Cutout Digital Chilled Liq. Type (0=Water, Analog Low Ambient Temp Cutout 1=Glycol) Analog ––...

  • Page 138: Isn Operational & Fault Codes

    Service and Troubleshooting FORM 150.63-NM6 (1020) TABLE 41 – ISN OPERATIONAL AND FAULT CODES P56/58 OPERATIONAL CODE P57/59 FAULT CODE NO ABNORMAL CONDITION NO FAULT UNIT SWITCH OFF VAC UNDER VOLTAGE SYSTEM SWITCH OFF LOW AMBIENT TEMPERATURE LOCK-OUT HIGH AMBIENT TEMPERATURE UNIT FAULT LOW LEAVING CHILLED LIQUID TEMP SYSTEM FAULT...
  • Page 139 FORM 150.63-NM6 (1020) This page intentionally left blank . JOHNSON CONTROLS...

  • Page 140: Section 4 Wiring Diagrams

    Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0045 – YCUL0095 LD08780 FIG. 22 – ELEMENTARY DIAGRAM, CONTROL CIRCUIT – YCUL0045 - YCUL0095 JOHNSON CONTROLS...
  • Page 141 FORM 150.63-NM6 (1020) LD08801 JOHNSON CONTROLS...

  • Page 142: Elementary Diagram - Power Circuit (Ycul0045 - Ycul0095)

    Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0045 – YCUL0095 LD08778 FIG. 23 – ELEMENTARY DIAGRAM, POWER CIRCUIT – YCUL0045 - YCUL0095 JOHNSON CONTROLS...

  • Page 143: Elementary Diagram - Middle Market (Ycul0045 - Ycul0095)

    FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0045 – YCUL0095 LD08945 FIG. 24 – ELEMENTARY DIAGRAM, MIDDLE MARKET – YCUL0045 - YCUL0095 JOHNSON CONTROLS...

  • Page 144: Connection Diagram - Middle Market (Ycul0045 - Ycul0095)

    Wiring Diagrams FORM 150.63-NM6 (1020) CONNECTION DIAGRAM YCUL0045 – YCUL0095 LD08779 FIG. 25 – CONNECTION DIAGRAM, MIDDLE MARKET – YCUL0045 - YCUL0095 JOHNSON CONTROLS...
  • Page 145 FORM 150.63-NM6 (1020) LD08946 JOHNSON CONTROLS...

  • Page 146: Elementary Diagram - Control Circuit (Ycul0121)

    Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0121 LD08777 FIG. 26 – ELEMENTARY DIAGRAM, CONTROL CIRCUIT - YCUL0121 JOHNSON CONTROLS...
  • Page 147 FORM 150.63-NM6 (1020) LD08800 JOHNSON CONTROLS...

  • Page 148: Elementary Diagram - Power Circuit (Ycul0121)

    Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0121 LD08774 FIG. 27 – ELEMENTARY DIAGRAM, POWER CIRCUIT - YCUL0121 JOHNSON CONTROLS...

  • Page 149: Elementary Diagram - Middle Market (Ycul0121)

    FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0121 LD08945 FIG. 28 – ELEMENTARY DIAGRAM, MIDDLE MARKET - YCUL0040E_ JOHNSON CONTROLS...

  • Page 150: Connection Diagram - Middle Market (Ycul0121)

    Wiring Diagrams FORM 150.63-NM6 (1020) CONNECTION DIAGRAM YCUL0121 LD08944 FIG. 29 – CONNECTION DIAGRAM, MIDDLE MARKET - YCUL0121 JOHNSON CONTROLS...
  • Page 151 FORM 150.63-NM6 (1020) LD08776 JOHNSON CONTROLS...

  • Page 152: Elementary Diagram - Control Circuit (Ycul0125 - Ycul0185)

    Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0125 – YCUL0185 LD08784 FIG. 30 – ELEMENTARY DIAGRAM, CONTROL CIRCUIT – YCUL0125 - YCUL0185 JOHNSON CONTROLS...
  • Page 153 FORM 150.63-NM6 (1020) LD08804 JOHNSON CONTROLS...

  • Page 154: Elementary Diagram - Power Circuit (Ycul0125 - Ycul0185)

    Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0125 – YCUL0185 LD08802 FIG. 31 – ELEMENTARY DIAGRAM, POWER CIRCUIT – YCUL0125 - YCUL0185 JOHNSON CONTROLS...
  • Page 155 FORM 150.63-NM6 (1020) LD08781 JOHNSON CONTROLS...

  • Page 156: Elementary Diagram - Middle Market (Ycul0125 - Ycul0185)

    Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0125 – YCUL0185 LD08783 FIG. 32 – ELEMENTARY DIAGRAM, MIDDLE MARKET – YCUL0125 - YCUL0185 JOHNSON CONTROLS...
  • Page 157 FORM 150.63-NM6 (1020) This page intentionally left blank. JOHNSON CONTROLS...

  • Page 158: Connection Diagram - Middle Market (Ycul0125 - Ycul0185)

    Wiring Diagrams FORM 150.63-NM6 (1020) CONNECTION DIAGRAM YCUL0125 – YCUL0185 LD08782 FIG. 33 – CONNECTION DIAGRAM, MIDDLE MARKET – YCUL0125 - YCUL0185 JOHNSON CONTROLS...
  • Page 159 FORM 150.63-NM6 (1020) LD08803 JOHNSON CONTROLS...
  • Page 160 Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0211 – YCUL0275 LD08788 FIG. 34 – ELEMENTARY DIAGRAM, CONTROL CIRCUIT – YCUL0211 - YCUL0275 JOHNSON CONTROLS...
  • Page 161 FORM 150.63-NM6 (1020) LD08807 JOHNSON CONTROLS...
  • Page 162 Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0211 – YCUL0275 LD08805 FIG. 35 – ELEMENTARY DIAGRAM, POWER CIRCUIT – YCUL0211 - YCUL0275 JOHNSON CONTROLS...
  • Page 163 FORM 150.63-NM6 (1020) LD08785 JOHNSON CONTROLS...
  • Page 164 Wiring Diagrams FORM 150.63-NM6 (1020) ELEMENTARY DIAGRAM YCUL0211 – YCUL0275 LD08786 FIG. 36 – ELEMENTARY DIAGRAM, MIDDLE MARKET – YCUL0211 - YCUL0275 JOHNSON CONTROLS...
  • Page 165 FORM 150.63-NM6 (1020) This page intentionally left blank. JOHNSON CONTROLS...
  • Page 166 Wiring Diagrams FORM 150.63-NM6 (1020) CONNECTION DIAGRAM YCUL0211 – YCUL0275 LD08787 FIG. 37 – CONNECTION DIAGRAM, MIDDLE MARKET – YCUL0211 - YCUL0275 JOHNSON CONTROLS...
  • Page 167 FORM 150.63-NM6 (1020) LD08806 JOHNSON CONTROLS...
  • Page 168 5000 Renaissance Drive, New Freedom, Pennsylvania USA 17349 1-800-524-1330 Subject to change without notice. Printed in USA Copyright © by Johnson Controls 2020 www.johnsoncontrols.com ALL RIGHTS RESERVED Form 150.63-NM6 (1020) Issue Date: October 19, 2020 Supersedes: 150.63-NM6 (308)

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