Wiring Diagrams - Carrier 42BJ ICM Installation Manual

13.5 - Wiring diagrams

The ICM unit can be delivered without a control system, that is, without valves or flexible water pipes, but with the fan cable
bundle connected to the speed controller and the electric heater connected to the power relay (depending on the configuration). If
this option is chosen, the ICM is delivered with a terminal strip and a plastic protective cover.
5-row cooling coil (2 pipes)
5-row coil with heating/cooling changeover (2 pipe change-over)
Cooling valve
Fan
Cooling Heating
valve valve
Fan
Speed 1(LS)
Speed 2
Speed 3 (HS)
Cooling valve open
L: Thermostat supply (230 V a.c.)
N: Thermostat supply (230 V a.c.)
6 x 0.75 mm 2
Supply:
230 V, 50 Hz, 1 phase 3G1, 5 mm
Protection: T2A
Speed 1(LS)
Speed 2
Speed 3 (HS)
Cooling valve control
Heating valve control
L: Thermostat supply (230 V a.c.)
N: Thermostat supply (230 V a.c.)
7 x 0.75 mm 2
Supply:
230 V, 50 Hz, 1 phase 3G1, 5 mm 2
Protection: T2A
2
33