Fan Coil Thermostat Wiring Diagram

If you check the honeywell thermostat ct31a1003 wiring diagram you ll see that it requires only two wires.

Fan coil thermostat wiring diagram.

A the fan coil unit is controlled by a unit mounted controller provided by mechanical systems controls contractor mscc. B on a call for cooling the thermostat signals for the heating control valve to modulate toward the closed position. On a further call for cooling the thermostat signals for the fan to speed up from its. Fan coil relay board fcrb installation operation and maintenance.

If fan speeds are adjustable the relay. Fan coil unit fcu fan motor control. Page 7 tb6575 tb8575 digital fan coil thermostats thermostat wiring diagrams the figures in this section illustrate typical wiring for. Example wiring diagrams typical 24vac control drawing.

Add a jumper wire from y or y1 to g on the furnace board or fan coil wiring to allow the blower to turn on during cooling operation. Valve tb6575a1000 tb6575b1000 and tb6575c1000 fan coil thermostats which are 120 240 277 vac powered. 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.

13 beginning on page 7. This is because it s a very basic thermostat designed only to control a heating system. Page 7 tb6575 tb8575 suitepro digital fan coil thermostats thermostat wiring diagrams l hot the figures in this section illustrate typical wiring for. See more ideas about fan motor diagram thermostat wiring.

I am especially concerned about possible confusion between the fancoil s c terminal fancoil to water control valve and y terminal thermostat to fancoil for water control valve. 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. I have further analyzed the wiring between the fan coil units and thermostats and it definitely looks like temporary stuff. Use the g wire for the c wire at the equipment 2.

L hot tb6575a1000 and tb6575b1000 fan coil thermostats valve which are 120 240 vac powered. Equipment applications with 4 wires running to the thermostat r w y g and carrier fan coils.