McQuay M5MAC Troubleshooting Guide download pdf (Page 43)

McQuay Service Guide Book

6.6 Chilled Water Fan Coil Unit (W1V3)

The standard W1V3 board comes with a VALVE jumper. The system can be configured as the jumper

selection listed below:

VALVE jumper HEAT jumper

Heatpump Mode & Valve Application

√

Heatpump Mode & Valveless Application X

√

Cooling Mode & Valve Application

√

Cooling Mode & Valveless Application X X

√

: Jumper Remained X : Jumper Removed

VALVE & HEAT Jumper Location

Model: WM 05-25FW

1. VALVE jumper is plugged into JVLV connector on the emergency switchboard.

2. HEAT jumper is plugged into JMODE connector on the emergency switchboard.

Model: CK 20-50AW, CK 15-25BW, CK 10-20CW, CE 20-50DW and CC 10-60CW

1. VALVE jumper is plugged into JVLV connector on the main board.

2. HEAT jumper is plugged into the OD connector on the main board.

VALVE Jumper.

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McQuay M5MAC Troubleshooting Guide Page 43