35
Jumper Configuration
Model
Operating Modes
M1
2 Pipes without Aux. Heater
1
Heat>Cool>Dry>Fan
M2
2 Pipes with Aux. Heater
2
Heat>Cool>Dry>Fan
M3
4 Pipes + Boiler
3
Heat>Cool>Dry>Auto>Fan
M4
4 Pipes + Boiler
4
Heat>Cool>Dry>Fan
VALVE jumper
HEAT jumper
Heatpump Mode & Valve Application
Heatpump Mode & Valveless Application
X
Cooling Mode & Valve Application
X
Cooling Mode & Valveless Application
X
X
M1
M2
M3
M4
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:
The standard W2.0 board comes with a VALVE jumper. The system can be configured as the
jumper selection listed below:
√ : Jumper Remained
X : Jumper Removed
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.
Summary of Contents for M4LC
Page 1: ...Service Guide Book...
