McQuay M4RT

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.