Honeywell Rth111 Thermostat Wiring Diagram

I bought the rth111rth221 programmable thermostat and the old thermostat is a two wire my issue is the furnace is a fes 90 45 90000 input the red led is connected to open and the green wire is conne. Thermostat honeywell rth111 series operating manual.

Help With Thermostat Wiring O B To O And B Or To Jump Heat

Do not use c c1 or x wire.

Honeywell rth111 thermostat wiring diagram. Honeywell rth111 quick installation manual. Non programmable thermostat rth111 5 typical wiring 1 match each labeled wire with the terminal having the same letter. Thermostat honeywell rth111 quick installation manual.

Guide connect wires contd alternate wiring if a labeled wire does not match any terminal designation see diagram below. 3 push any excess wire back into the wall opening. Honeywell rth111 installation manual.

I have an oil burner and bought the honeywell rth111rth221 thermostat to replace my old mercury one. Rth111rth221 28 24 fan operation setting note. Its there so you can supply power to the heating and cooling switches with a single wire which is usually red.

The wiring for your honeywell thermostat depends on the functions of your heating and cooling system. Non programmable thermostat 28 pages. Thermostat wiring for dummies.

Thermostat terminal and remove it from the terminal. Identify and label each wire with the corresponding letter on the. When you purchase an item through links on our site we may earn an affiliate commission.

Do not use b wire if you already have o wire. Thermostat center is supported by our readers. Even the most seasoned people who enjoy diy may come across problems with wiring a thermostat.

If a wire does not match any terminal on the thermostat. Heck now im not calling anyone a dummy. When replacing an existing thermostat simply note the terminals to which the wires are attached and attach them to the same terminals.

2 loosen the terminal screws using a screwdriver insert the wires then tighten the screws. Ignore wire colors use only letter designations to. Youll probably see a thermostat jumper wire connecting the rc and rh terminals.

If its a new installation you may have to identify the wires first. The honeywell rth111b is a programmable version of the honeywell rth111 thermostat series. This setting is not applicable if there is no fan connected to the g terminal.

The jumper is located on the back of the thermostat faceplate. Non programmable thermostat 32 pages.