York YMC2 A Connection Diagram
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York YMC2 A Connection Diagram

York YMC2 A Connection Diagram

Chiller with m1 compressor
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Field Connections Diagram for YMC
Wiring diagrams
Contractor:
Order number:
Johnson Controls contract number:
Johnson Controls order number:
Purchaser:
Job name:
Location:
Engineer:
Reference
Approval
Construction
Job data
Chiller model number YMC
Number of units __________________________________________________________________________________________
Motor/variable speed drive power: 380 V, 400 V, 460 V for 60 Hz; 380 V, 400 V, 415 V for 50 Hz
Date:
Date:
Date:
_____________________________________________________________________________
2
Chiller with M1 Compressor
Form Number: 160.78-PW1 (824)
Supersedes: 160.78-PW1 (823)
Model A
2
Issue Date: 2024-08-05

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Summary of Contents for York YMC2 A

  • Page 1 Field Connections Diagram for YMC Model A Chiller with M1 Compressor Form Number: 160.78-PW1 (824) Supersedes: 160.78-PW1 (823) Issue Date: 2024-08-05 Wiring diagrams Contractor: Order number: Johnson Controls contract number: Johnson Controls order number: Purchaser: Job name: Location: Engineer: Reference Date: Approval Date:...

  • Page 2: General Safety Guidelines

    General safety guidelines Important: Read before proceeding. This equipment is a relatively complicated apparatus. During rigging, installation, operation, maintenance, or service, individuals might be exposed to certain components or conditions including, but not limited to: heavy objects, refrigerants, materials under pressure, rotating components, and both high and low voltage.
  • Page 3 Wiring warning WARNING External wiring, unless specified as an optional connection in the manufacturer’s product line, is not to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls and any external wiring must not be installed inside the micro panel. All wiring must be in accordance with the published specifications of Johnson Controls and must be performed only by a qualified electrician.

  • Page 4: Changeability Of This Document

    Changeability of this document In complying with the Johnson Controls policy for continuous product improvement, the ® information contained in this document is subject to change without notice. Johnson Controls makes no commitment to update or provide current information automatically to the manual or product owner.
  • Page 5 Variable speed drive (490, 0490A, 0490B, 0490C) 1. All field wiring must be completed in accordance with the National Electrical Code (NEC) USA codes and other applicable codes and specifications listed in this manual. NEC articles and paragraphs cited are for reference only and may not be the current NEC code. WARNING Correct grounding is required.
  • Page 6 3. Using power correction capacitors may cause interference with the operation of the drive, or may cause the power factor to be over-corrected. The drive corrects the power factor to 0.95 for the drive. 4. Johnson Controls does not supply the wiring, electrical conduit, junction boxes, fused disconnect switches (FDS), or circuit breakers, starters (M), pushbutton stations (PB), manual-off-automatic switch (S), flow switch (FLS) or control relays.
  • Page 7 14. Refer to the wiring diagram for YORK control center and Field Control Modifications (Form 160.78- PW2). 15. The branch circuit overcurrent protection device for the YORK drive must be a time delay type with a rating which is the standard fuse or circuit breaker size in line with NEC standards.
  • Page 8 17. The drive is equipped with a UL listed rotary disconnect switch or optional circuit breaker. In both cases, fast acting semiconductor fuses are located downstream of the disconnecting device, to provide additional protection to the drive. A ground fault is employed on both circuit breaker and disconnect switch models through the drive logic control board.
  • Page 9 Table 5: Variable speed drive (490, 0490A, 0490B, 0490C) VSD model Input voltage (V) Frequency VSD circuit breaker rating at 480 Semiconductor Ground (Hz) VAC, 60 Hz or 400 VAC, 50 Hz fuse rating (A) at fault trip 660 VAC Trip (A) Withstand 380/400/460...
  • Page 10 Figure 3: Variable speed drive front view (490, 0490A, 0490B, 0490C) Callout Description Circuit breaker, optional Disconnect switch Field Connections Diagram for YMC Model A Chiller with M1 Compressor...
  • Page 11 Variable speed drive (744A) 1. All field wiring must be done in accordance with National Electric Code (NEC) USA codes and other codes and specifications listed in this manual. NEC articles and paragraphs cited are for reference only and may not be current NEC code. WARNING Correct grounding is required.
  • Page 12 3. Using power correction capacitors may cause interference with the operation of the drive, or may cause the power factor to be over-corrected. The drive corrects the power factor to 0.95 for the drive. 4. Johnson Controls does not supply the wiring, electrical conduit, junction boxes, fused disconnect switches (FDS), or circuit breakers, starters (M), pushbutton stations (PB), manual-off-automatic switch (S), flow switch (FLS), or control relays.
  • Page 13 14. Refer to the wiring diagram for YORK control center and Field Control Modifications (Form 160.78- PW2). 15. The branch circuit overcurrent protection device for the YORK VSD must be a time delay type with a rating which is the standard fuse or circuit breaker size required to protect the field supply wiring conductors in line with the NEC standards.
  • Page 14 17. The drive is equipped with a UL listed rotary disconnect switch or optional circuit breaker. In both cases, fast acting semiconductor fuses, downstream of the disconnecting device, to provide additional protection to the drive. Ground fault is employed on both circuit breaker and disconnect switch models through the drive logic control board.
  • Page 15 Table 9: Variable speed drive (744A) Input voltage (V) Frequency Chiller motor VSD circuit breaker rat- ing Semiconductor Ground fault (Hz) code at 480 VAC, 60 Hz or 400 VAC, fuse rating (A) at trip (A) 50 Hz 660 VAC Trip (A) Withstand 380/400 /460...
  • Page 16 Figure 6: Variable speed drive front view (744A) Callout Description Circuit breaker, optional Disconnect switch Field Connections Diagram for YMC Model A Chiller with M1 Compressor...

  • Page 17: Field Connections

    Field connections Figure 7: Field connections Field supplied FDS5 FDS3 Auto note note Note note Chilled water pump motor Wire 14 AWG Condenser water copper pump motor notes 12 and 18 Wire TB4* TB2* 14 AWG copper 1 95 1 82 11 1 31 9 1 13 12 1 20 19 1 8 7 1 44 45 55 56 26 27 42 43 40 41 150 151 Note 12...
  • Page 18 Wire 14 AWG copper, Note 12 OptiView™ Control Center * Notes 5 and 7   Compressor motor* © 2024 Johnson Controls. 5000 Renaissance Drive, New Freedom, York, PA 17349, USA. Subject to change without notice. All rights reserved.

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