Chilled Water Fan Coil Unit - W2.0 - McQuay MWM Service Manual Book

Chilled Water Fan Coil Unit (W2.0)
The system model can be configured via the following jumpers. For each model selected, the
permissible operating modes are as follows:
Jumper Configuration
M1 2 Pipes without Aux. Heater
M2 2 Pipes with Aux. Heater
M3 4 Pipes + Boiler
M4 4 Pipes + Boiler
The standard W2.0 board comes with a VALVE jumper. The system can be configured as the
jumper selection listed below:
Heatpump Mode & Valve Application
Heatpump Mode & Valveless Application
Cooling Mode & Valve Application
Cooling Mode & Valveless Application
√ : Jumper Remained
VALVE & HEAT Jumper Location
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 Operating Modes
1 Heat>Cool>Dry>Fan
2 Heat>Cool>Dry>Fan
3 Heat>Cool>Dry>Auto>Fan
4 Heat>Cool>Dry>Fan
VALVE jumper
X
X
X : Jumper Removed
M1
M2
M3
M4
HEAT jumper
X
X
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