Single Stage Furnace Thermostat Wiring

The thermostat only kicks in the second stage if the furnace can t maintain 6 to 8 degrees per hour.

Single stage furnace thermostat wiring.

The first and foremost thing you must do is to check what kind of heating system you are using at your home. So you may have to fish an additional four strand cable from the furnace room to the thermostat location photo 1. A two stage thermostat may need more wires than your current programmable thermostat. If not connect them in this manner.

The e and w2 hook ups are for the emergency heat relay and auxiliary heat control respectively. Single stage hvac system thermostat source. Verify that the red wire is connected to the r terminal green wire to the g terminal and white wire to the w terminal. 1 know your heating system.

How to choose the right furnace thermostat. If you have a two stage heat pump then you will also utilize terminal y2 for the second stage. Strip the brown thermostat wire back one half inch and connect it to the w2 terminal on the furnace. That is a basic honeywell thermostat wiring diagram for a single stage heat pump.

A dual fuel system which is comprised of a gas furnace and a heat pump should be connected to a thermostat or control system that can accommodate the specific heating set points. The terminals are usually marked r and w. The new thermostat doesn t have these because it isn t designed for this type of installation. Cadet 16 7 amp 120 208 240 volt single pole electronic 7 day programmable wall thermostat in white.

Basically heating furnaces are of two types. A two stage or variable speed system may only be operating at a single speed because the thermostat or control system doesn t allow for two stage wiring. The thermostat you purchased is designed for a single stage system such as an air conditioner and a single stage gas furnace. Conventional single stage systems will have one wire leading into w or w1 terminal for heating and one wire leading into y or y1 terminal for cooling.

This controls the second stage of heating. One which is common is the single stage heating system and the other one is multi stage heating system.