Typical Thermostat Wiring for Furnace Heating and Air Conditioning. Green – The green wire connects to the fan. This is a round thermostat with a dial on it. One is for cool and the other is for heat, hence the abbreviation “RH” and “RC”. (Ex. Variety of honeywell round thermostat wiring diagram. The new one is a 1F87-361 White Rodgers. 3. For coupons and instant savings on Honeywell Products, visit http://www.honeywellstore.com/store/honeywell-coupon-code-discount.asp today! If we recommend placing a wire in a terminal, do not move it to another terminal if we address it later in the guide. How to calibrate thermostat. T8775A T8775C. The Round. 2. Yes, this step is included in every smart thermostat installation manual but it’s easy to get excited and take just one or two blurry photos (or skip this step entirely). Orange – This wire connects to your heat pump (if you have one). *Never attach wires to both the B and O terminals. This electrical wiring question came from: Pamela, a Handy woman from Brockton, Massachusetts. Red – Now, there can be two separate wires for this. RTH9585WF. Then the thermostat body is screwed in place. These run from the thermostat to the furnace and control the heat in a home. A plug connector may be used: Your old thermostat is a mechanical thermostat and did not have a common wire running to it. I am replacing my old Honeywell round gold thermostat (mercury bulb) with a new digital programmable one. It reveals the elements of the circuit as streamlined forms, as well as the power as well as signal links in between the tools. … The current connections on my old round thermostat are as follows: W = White wire for Heating G= Green wire for fan relay to energize blower fan R= Red wire for power to thermostat Y= yellow wire for air conditioning and a mysterious blue wire … Your photos should be good enough to help you put your old thermostat back into service. After you have removed and labeled all wires you can unscrew, remove the old thermostat wall plate and mount the new thermostat's wall plate. After mounting the new thermostat’s wall plate, we can re-connect the wiring. If the furnace is cycling on and off too often, move the lever away from the “longer” setting by one calibration mark. CT87A,B,J ROUNDfi THERMOSTAT 69-0274-6 6 Wire the thermostat 1. A wiring diagram is a simplified conventional pictorial depiction of an electric circuit. Use the wiring cross-reference table below to match each old thermostat wire with its corresponding terminal on the CT87 wallplate or subbase. Document(s) Updated: 2020. Locate the heat anticipator adjustment lever arm (Photo 2). 8 through 13 wiring diagrams. For the new thermostat to work, you need a 24 volt common to complete the circuit with the 24-volt hot wire to provide power for the thermostat because it is a state of the art digital programmable wi-fi thermostat it will need 24-volt power to work. Two-wire thermostats typically have a red and a white wire. Choosing the incorrect manual may mean you have the wrong Honeywell thermostat instructions for wiring or configuring your device. To wire a thermostat of this kind, basic electrical skills, tools and safety techniques are required. The screws that secure a round Honeywell traditional wall thermostat to its backing plate will also connect it properly to the wiring. Non-Programmable Thermostat 2020 User Manual Installation Manual. See Fig. Blue – This is your common or “C” wire. Always turn … Next, adjust the heat anticipator, which fine-tunes the point at which the thermostat turns off the furnace burners. 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