McQuay M5MAC Guida alla Risoluzione dei Problemi Scaricare il pdf (Pagina 44)

McQuay Service Guide Book

6.7 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 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

The standard W2 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

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

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

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McQuay M5MAC Guida alla Risoluzione dei Problemi Pagina 44