Honeywell Heat Cool Thermostat Wiring Diagram

2 1 2 furnace r rc switch up o b heat only.

Honeywell heat cool thermostat wiring diagram. This is because it s a very basic thermostat designed only to control a heating system. Honeywell thermostat wiring diagram 4 wire examples. If you have a system that both heats and cools your house you need a more complex thermostat with more wire terminals and if your system incorporates a heat pump you need even more wire terminals. Your system likely only has one transformer as most typical residential systems only use a single transformer for control.

Gas or oil furnace cool only c g w r s s y y2 g c u u a w2 w k rc r l a e aux m36882 1 common optional. The thermostat makes a contact on both a rise and on a fall of room temperature. But here is a list of the most common wire color mappings as seen in many four wire t stat setups. If you have a two stage heat pump then you will also utilize terminal y2 for the second stage.

Most heat only gas or oil forced air systems do not use a fan g wire. T6 pro wiring diagrams wiring diagrams heat only. A wiring diagram is a streamlined conventional photographic representation of an electrical circuit. The table above provides a more complete list of honeywell thermostat wiring colors and their uses.

It shows the parts of the circuit as simplified shapes and also the power as well as signal connections between the devices. Furthermore this thermostat wiring diagram is specifically for a system with two transformers. C 24 vac common you might see blue purple or brown typically used for this wire. If you check the honeywell thermostat ct31a1003 wiring diagram you ll see that it requires only two wires.

That is a basic honeywell thermostat wiring diagram for a single stage heat pump. Gas or oil furnace.