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York YMC2 Wiring

York YMC2 Wiring

Chiller with m1 compressor
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Wiring Diagrams
Contractor ____________________________
Order no. ____________________________
Johnson Controls contract no. ____________
Johnson Controls order no. ______________
Reference
Date _______
Job data:
Chiller model no. YMC
Number of units
Supersedes: 160.78-PW2 (1016)
Purchaser _______________________________________________
Job name _______________________________________________
Location ________________________________________________
Engineer ________________________________________________
Approval
Date ________
2
Issue Date:
August 5, 2024
Unit Wiring and
Field Control Modifications
Model YMC
2
with M1 Compressor
Construction
Form: 160.78-PW2 (824)
Chiller
Date ________

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Summary of Contents for York YMC2

  • Page 1 Supersedes: 160.78-PW2 (1016) Form: 160.78-PW2 (824) Unit Wiring and Field Control Modifications Model YMC Chiller with M1 Compressor Wiring Diagrams Contractor ____________________________ Purchaser _______________________________________________ Order no. ____________________________ Job name _______________________________________________ Johnson Controls contract no. ____________ Location ________________________________________________ Johnson Controls order no. ______________ Engineer ________________________________________________ Reference Date _______...
  • Page 2 Form 160.78-PW2 Issue date: 08/05/2024 Important Read before proceeding General safety guidelines This equipment is a relatively complicated apparatus. well as severe personal injury or death to themselves During rigging, installation, operation, maintenance, and people at the site. or service, individuals may be exposed to certain This document is intended for use by owner- components or conditions including, but not limited authorized rigging, installation, and operating/service...
  • Page 3 Form 160.78-PW2 Issue date: 08/05/2024 Interface control wiring warning Risk of personal injury, do not drill into or grind in the control panel. Knockouts are provided in the control panel to run the approved customer interface wiring, refer to Mod A Unit Wiring and Field Control Modifications with M1 Compressor (Form 160.78-PW2) for further details.
  • Page 4 Mod A OptiView™ Control Center Operation Manual 160.78-O2 Mod A Unit Service 160.78-M1 Mod A OptiView™ Service 160.78-M2 Nomenclature 0050 YORK Mod Level A Magnetic Bearing Refrigerant R-134a Centrifugal Chiller Capacity in KW S = Single Stage T = Two Stage...

  • Page 5: Table Of Contents

    Form 160.78-PW2 Issue date: 08/05/2024 Table of contents Section 1 - Unit wiring .............................7 Section 2 - Field control modifications .......................39 Notes ................................39 Remote mode ready-to-start contacts ......................40 Cycling shutdown contacts ..........................40 Safety shutdown contacts ..........................40 Run contacts ..............................
  • Page 6 Form 160.78-PW2 Issue date: 08/05/2024 List of figures Figure 1: Unit device locations, front view ........................8 Figure 2: Unit device locations, rear view .........................9 Figure 3: OptiView component layout ........................10 Figure 4: Microboard (031-02430-006) details ....................... 11 Figure 5: Microboard (031-03630-007) details .......................12 Figure 6: I/O board (031-01743) details .........................13 Figure 7: OptiView Control Panel TB6 and TB7 details ..................13 Figure 8: LTC I/O board (031-02895) details ......................14...

  • Page 7: Section 1 - Unit Wiring

    Section 1 - Unit wiring 1. This wiring diagram describes the standard 7. Device contact rating to be 5 milliamperes at 115 electronic control scheme for use with a YORK Volts AC. Variable Speed Drive. 8. Contact rating is 5A resistive at 120 Volts AC or 2.

  • Page 8: Figure 1: Unit Device Locations, Front View

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Variable OptiView Speed Control Drive Panel Magnetic Bearing Controller Liquid Level Sensor Orifice Valve Drop Leg Actuator Refrigerant Temperature (RT6) LD14644 Figure 1: Unit device locations, front view Johnson Controls...

  • Page 9: Figure 2: Unit Device Locations, Rear View

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 *Vent Variable † Motor Cooling Motor Geometry Valve Temperature Diffuser Stall Detector Pressure Motor Discharge Temperature (RT2) High Pressure Cut-out Condenser Pressure Hot Gas Bypass Valve * PRV Leaving Position Condenser Liquid Evaporator...

  • Page 10: Figure 3: Optiview Component Layout

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 035-22948-013 REV A E-LINK SC-EQ LD14648b Figure 3: OptiView component layout Johnson Controls...

  • Page 11: Figure 4: Microboard (031-02430-006) Details

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 -12V +12V -12V OPTIONAL +12V REMOTE POWER CURRENT SUPPLY & TEMP. INTERFACE OPTIONAL GPIC POWER SHIELD MUTLI- UNIT COMMS BACKLIGHT SHIELD LTC I/O BOARD DISPLAY VARIABLE SPEED DRIVE OPTIONS DTRI PRINTER/ GPIC/ SC-EQ TXDI...

  • Page 12: Figure 5: Microboard (031-03630-007) Details

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 SD Card OPTIONAL CURV REMOTE CURI CURRENT LWTV +24V & TEMP LWTI -12V INTERFACE +12V POWER SUPPLY Power EVAPORATOR INPUT FLOW SWITCH CONDENSER INPUT FLOW SWITCH OPTIONAL SHLD SC-EQ POWER LTC I/O BOARD -12V...

  • Page 13: Figure 6: I/O Board (031-01743) Details

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 J-PRV J-VGD J-VGD J-PRV J-VSD MICROBOARD 031-02430 031-03630 NOTE: TB6-14 25 DO Number placed above wire is pin number. TB6-25 LD14650A Figure 6: I/O board (031-01743) details J-VSD J-VSD J-PRV J-VSD J-PRV J-VGD...

  • Page 14: Figure 8: Ltc I/O Board (031-02895) Details

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 To HGBP Actuator J-3 To Level Control Orifice Actuator J-3 To Motor Housing EEV Control Board To TB7-313 Figure 8: LTC I/O board (031-02895) details LD14734 Johnson Controls...

  • Page 15: Figure 9: Stall Detector Board (031-02418) Details

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 TPE TPD TPK GND -5V +5V INPUT GREEN J8-1 J7-2 Microboard SIG IN 031-02430 BLACK J7-24 INPUT J8-15 INPUT J7-23 BLACK Stall Detector WHITE Discharge Pressure OUT2 OUT1 031-02418-001 LD14737 Figure 9: Stall detector board (031-02418) details LD14736 Figure 10: Connector details...

  • Page 16: Figure 11: Component Connection Details

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 VGD POTENTIONMETER BLACK OptiView Control Panel - Early Release Units Figure 11: Component connection details LD14735 Johnson Controls...

  • Page 17: Figure 12: Power Distribution Diagram 490A And 744A

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Power distribution diagram 092-42636-004 CIRCUIT BREAKER DRIVE AMPS 1200 TRANSFORMER SECONDARY FUSE DRIVE DESIGNATION AMPS 11 FU MOD A 15 FU MOD B 11 FU MOD B 25 FU DRIVE AMPS MOD A MOD A...

  • Page 18: Figure 13: Electrical Ground Diagram 490A And 744A

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Electrical ground diagram 035-22948-014 MOD A ONLY LD21280 Figure 13: Electrical ground diagram 490A and 744A Johnson Controls...

  • Page 19: Figure 14: Run Permissive Circuit

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Run permissive circuit 035-22948-009 REV A LD14647 Figure 14: Run permissive circuit Johnson Controls...

  • Page 20: Figure 15: Motor Cooling Valve, Interface (Bm1 Model B Only)

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 MOTOR IB2 INTERFACE COOLING BOARD VALVE J - 1 J - 2 NOTE J - 3 J - 4 MICROBOARD SERIAL COMMS POSITION SIGNAL 4/12 RS-485 0-10VDC COM3 3/11 – RETURN 24V-1 BOARD...

  • Page 21: Figure 16: Optiview Power Wiring 02430 Microboard

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 OptiView power wiring Mod Level A with 031-02430-006 microboard 035-22948-004 REV B To Line 702 To Line 702 To Line 903 To Line 903 LD14636a Figure 16: OptiView power wiring 02430 microboard Johnson Controls...

  • Page 22: Figure 17: Optiview Power Wiring 03630 Microboard

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 OptiView power wiring Mod Level B with 031-03630-007 microboard 092-42636-006 ISOLATED TRANSFORMER USED WITH IB2 IN MOD LEVEL B UNITS ONLY LD21600 Figure 17: OptiView power wiring 03630 microboard Johnson Controls...
  • Page 23 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 This page intentionally left blank Johnson Controls...

  • Page 24: Figure 18: Low Voltage I/O Wiring Diagram

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Low voltage I/O wiring diagram LD21601a Figure 18: Low voltage I/O wiring diagram Johnson Controls...
  • Page 25 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Low voltage I/O wiring diagram (cont'd) 092-42636-007 LD21601b Figure 18: Low voltage I/O wiring diagram (cont'd) Johnson Controls...
  • Page 26 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 This page intentionally left blank Johnson Controls...

  • Page 27: Figure 19: I/O Control Wiring

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Control I/O wiring 092-42636-008 LD21606 Figure 19: I/O control wiring Johnson Controls...
  • Page 28 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Control I/O wiring (cont'd) LD21602a Figure 19: I/O control wiring (cont'd) Johnson Controls...
  • Page 29 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Control I/O wiring (cont'd) 092-42636-009 LD21602b Figure 19: I/O control wiring (cont'd) Johnson Controls...

  • Page 30: Figure 20: I/O Control Wiring Hyp490Vsd

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 I/O control wiring HYP490VSD LD21603a Figure 20: I/O control wiring HYP490VSD Johnson Controls...
  • Page 31 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 I/O control wiring HYP490VSD (cont'd) 092-42636-010 LD21603b Figure 20: I/O control wiring HYP490VSD (cont'd) Johnson Controls...

  • Page 32: Figure 21: I/O Control Wiring Hyp744Vsd

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 I/O control wiring HYP744VSD LD21604a Figure 21: I/O control wiring HYP744VSD Johnson Controls...
  • Page 33 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 I/O control wiring HYP744VSD (CONT'D) 092-42637-010 LD21604b Figure 21: I/O control wiring HYP744VSD (cont'd) Johnson Controls...

  • Page 34: Figure 22: I/O Wiring Options

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 I/O wiring options LD21605a Figure 22: I/O wiring options Johnson Controls...
  • Page 35 Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 I/O wiring options (cont'd) 092-42636-011 LD21605b Figure 22 – I/O wiring options (cont'd) Johnson Controls...

  • Page 36: Figure 23: Motor Connections

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 Motor connections MODULE OUTLET MODULE OUTLET MOTOR POWER OUTLET MOTOR SIGNAL OUTLET LD14806 Figure 23: Motor connections Johnson Controls...

  • Page 37: Figure 24: Mbc Interconnection Diagram

    Form 160.78-PW2 Section 1 - Unit wiring Issue date: 08/05/2024 MBC interconnection diagram MOTOR Z1 SIDE INTERCONNECTION DIAGRAM AXIAL SENSOR AXIAL BEARING RADIAL BEARING RADIAL SENSOR TEMPERATURE PROBE TEMPERATURE PROBE HOUSING GROUND Security Cable Z2 SIDE INTERCONNECTION DIAGRAM RADIAL BEARING RADIAL SENSOR AXIAL BEARING AXIAL SENSOR...
  • Page 38 Form 160.78-PW2 Issue date: 08/05/2024 This page intentionally left blank Johnson Controls...

  • Page 39: Section 2 - Field Control Modifications

    Control Center Wiring ™ (see Product Drawing Form 160.00-PA1.1) in Diagram. NEMA I enclosure. Consult your YORK or 2. If more than one of these modifications is to Johnson Controls representative. be utilized with a particular unit, additional 10. Sequence control kits (see Figure 39 on page...

  • Page 40: Remote Mode Ready-To-Start Contacts

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 Remote mode ready-to-start contacts cause of the shutdown on the System Details bar of When closed, the remote mode ready-to-start contacts signify the following: the display. Cycling Shutdown contacts function in all operating modes.

  • Page 41: Anticipatory/Alarm Contacts

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 Even when the chiller is applied with Remote Start-Stop (when the Control Center is in the “Remote Operating Mode”), an EMERGENCY STOP BOARD by an operator or others can STOP the compressor from the OptiView™...

  • Page 42: Multi-Unit Sequence

    TB5-22 to I/O board YORK. See Figure 39 on page 45 for two unit TB2-150. Then connect I/O board TB2-151 to the sequence control kit.

  • Page 43: Condenser Flow Sensors

    Microboard and the paddle-type flow sensor applied. Flow Switch – McDonnel type FS8W, max. interfaces with the I/O board. 150 psi (YORK Part No. 024-15793) is available at additional cost. If the condenser water flow switch For the program to read the appropriate inputs for...

  • Page 44: Thermal Type Flow Sensor

    For two unit sequence control kit, order YORK Accessory Kit No. 466- MICROBOARD 61597T for controls as specified with NEMA 1 THERMAL-TYPE FLOW SENSOR enclosure.

  • Page 45: Figure 39: Two Unit Sequence Control

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 Figure 39: Two unit sequence control LD06835 See Figure 39. LD06826 Figure 40: Multiple units (two) - series operation Johnson Controls...

  • Page 46: Multiple Units (Two) - Parallel Operation - Individual Unit Pumps

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 Multiple units (two) – parallel operation – individual unit pumps This piping arrangement has a chilled water pump associated with each evaporator that are cycled ON and OFF with the unit. This results in reduced chilled water flow rates whenever a single unit can handle the cooling load.

  • Page 47: Figure 43: Remote Current Limit Setpoint With 0-10 Vdc Or 2-10 Vdc Signal

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 Important: The signal type used for Remote Current Limit Setpoint reset and SIGNAL the signal type used for Remote Leaving Chilled Liquid Temperature setpoint reset must be the same. For example, if a 0-10 COMMON VDC signal is being used for Remote Leaving Chilled Liquid Temperature...

  • Page 48: Remote Leaving Chilled Liquid Setpoint

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 Remote leaving chilled liquid setpoint SIGNAL Remote Leaving Chilled Liquid Temperature Setpoint Reset can be accomplished by supplying (by others) a 0-10 VDC, 2-10 VDC, 0-20 mA, 4-20 mA, or 1 COMMON to 11 second pulse width modulated (PWM) signal to the Control Center.

  • Page 49: Figure 46: Remote Leaving Chilled Liquid Temperature Setpoint With 0-10 Vdc Or 2-10 Vdc Signal

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 0-10 VDC OFFSET (°F) = (5 – 2)(10) As shown in Figure 46 on page 49, connect input to Microboard J22-3 (signal) and J22-5 (Gnd). A = (3)(10) 0 VDC signal produces a 0°F offset. A 10 VDC signal produces the maximum offset (10 or 20°F above = 30 the Local Setpoint Value).

  • Page 50: Figure 47: Remote Leaving Chilled Liquid Temperature Setpoint With 0-20 Ma Or 4-20 Ma Signal

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 1-11 seconds. As shown in Figure 48 on page 50, 4-20 mA As shown in Figure 47 on page 50, connect input connect dry closure relay contacts between I/O Board to MicroBoard J22-4 (signal) and J22-5 (Gnd.).

  • Page 51: External Signal For Refrigeration Unit Failure

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 External signal for refrigeration unit failure When the Safety Shutdown Contacts (see Figure 27 on page 40) are not connected to an Energy Management System they may be employed to energize a local or remote safety alarm (by others).

  • Page 52: Optional Head Pressure Control

    Form 160.78-PW2 Section 2 - Field control modifications Issue date: 08/05/2024 Optional head pressure control The chiller provides optional output for control of During head pressure control operation in a system equipment to maintain condenser temperature configuration where the means used by the particular for heat recovery on a double-bundle condenser site is to throttle flow through the single condenser unit or for head pressure control.

  • Page 53: Section 3 - Energy Management Systems

    Form 160.78-PW2 Issue date: 08/05/2024 Section 3 - Energy Management Systems chiller design allows for ease of interfacing with 2. When multiple unit installations are controlled Energy Management Systems (EMS). The OptiView by an EMS, remote start and stop con tacts are ™...
  • Page 54 Form 160.78-PW2 Section 3 - Energy Management Systems Issue date: 08/05/2024 6. Controlling the maximum allowable compressor chiller plant system control. The Metasys System motor amps from 30% to 100% through remote directly communicates with the OptiView™ current limit setpoint. See Figure 45 on page 48 Control Center via the E-Link Gateway or SC- when the remote current limit is accomplished by EQ which may be installed in the Control Center.
  • Page 55 Form 160.78-PW2 Issue date: 08/05/2024 Notes Johnson Controls...
  • Page 56 5000 Renaissance Drive, New Freedom, Pennsylvania USA 17349 1-800-524-1330 Subject to change without notice. Printed in USA Copyright © by Johnson Controls 2024 www.johnsoncontrols.com ALL RIGHTS RESERVED Form 160.78-PW2 (824) Issue Date: August 5, 2024 Supersedes: 160.78-PW2 (1016)

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