Fan Coil Unit Thermostat Wiring Diagram

The common wire sometimes referred to as the c wire is what s responsible for delivering constant power to your thermostat.

Fan coil unit thermostat wiring diagram.

A the fan coil unit is controlled by a unit mounted controller provided by mechanical systems controls contractor mscc. On a further call for cooling the thermostat signals for the fan to speed up from its. I have further analyzed the wiring between the fan coil units and thermostats and it definitely looks like temporary stuff. Fan coil relay board fcrb installation operation and maintenance.

3vdc 2 x aaa batteries 110vac 2 120vac 3 220vac 4 230vac 5 240vac 6 50 60hz. Thermostat wireless control unit specifications srw series wireless fan coil control unit is constituted with a thermostat remote and a receiver combined with valve actuator or not. B on a call for cooling the thermostat signals for the heating control valve to modulate toward the closed position. For programmable thermostats and smart thermostats c wires are essential for setting a schedule or having your heat or air conditioner turn on at a desired temperature while some units can run without a c wire even brands like nest recommend having one for optimal.

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In the most basic system this functionality is provided by use of a fan center relay and the low voltage wiring to the thermostat now will require a minimum of three wires for heat only units and four wires for heat cool fan for control. See more ideas about fan motor diagram thermostat wiring. This additional terminal is labeled g in the thermostat. Sep 13 2019 explore julian gonzalez s board century condenser fan motor wiring diagram on pinterest.