Gas Furnace Forced Air Thermostat Wiring

Color of wire and termination. Furnaces need a thermostat in order to turn the furnace on and off as needed.

Thermostat wiring and wire color chart thermostat wiring colors code.

You can find out more Diagram below

Gas furnace forced air thermostat wiring. This can save a considerable amount of energy especially in the spring and fall. One way to know if you have a line voltage thermostat is to look at the wires. Room thermostat installation wiring guide.

Without a thermostat the furnace would heat the home to uncomfortable temperatures. The most basic of systems such as an older heat only forced air gas furnace with a standing pilot light only need two wires for control. Run the wire through the furnace covering and into the control panel where the thermostat will be located.

It is a red wire and comes from the transformer usually located in the air handler for split systems but you may find the transformer in the condensing unit. Conventional gas forced air furnaces single stage or multi stage heat pumps providing heating and cooling electric central air conditioning systems with forced air ductwork. The kind of heating and cooling system you have will determine how many wires run from your furnace to your thermostat.

They connect to a two wire thermostat generally a mechanical thermostat with a mercury filled ball connected to a coiled bi metal strip. I am presently trying to set up the thermostat so it runs the gas furnace blower first mistake learned how to turn the air conditioner while heating by wiring the gas furnace thermostat to the wood boiler thermostat. R the r terminal is the power.

By contrast wires for low voltage thermostats are very thin similar to. A low voltage thermostat or control system is commonly used to connect with. This article series explains the basics of wiring connections at the thermostat for heating heat pump or air conditioning systems.

How to install a digital thermostat on furnace and ac syst. Conventional gas forced air furnaces including standing pilot and. It has the ability to run at a low btu output and a high btu output depending on the needs of the home.

We provide honeywell white rodgers other thermostat wiring diagrams and explanation showing how to wire a room thermostat including just what connections to make. A two stage forced air gas furnace is almost like having two furnaces in one. If the wire is not already connected to the furnace connect it to the proper terminal according to your furnace owners manual.

Most furnaces have a power switch in the central control or the heating system. The wire leads will be quite thick 12 gauge or 14 gauge wires like those connected to a wall outlet or light switch. The gas furnace blower has a honeywell mini zone controller.