Thursday, November 26, 2020

Upgrading White-Rodgers Thermostat

My current home has a White Rodgers Thermostat, Model 1F82-261, installed to control the York Diamond 80 furnace and the air-conditioner. 

With the cover off, the White-Rodgers Thermostat shows the following wiring.

Original Thermostat Wiring (4-wire version) that runs on batteries:

  • W  => white wire
  • RH => red wire (tied to RC)
  • B => n/c
  • RC => red wire (tied to RH)
  • C => n/c
  • G => green wire
  • O => n/c
  • Y => blue wire

To learn more about the wiring of thermostats, I watched a handy YouTube video:


The color code for wires is as follows:

Thermostat Wiring

  • W = Heating (white)
  • Y = Cooling (yellow)
  • G = Fan (green)
  • Rc = 24V power for Cooling (red)
  • Rh = 24V power for heating (red)
  • C = Common (blue)

Furnace Wiring

  • W = Heating (white)
  • R = 24V power for heating
  • Y/Y2 = Cooling (yellow)
  • G = Fan (green)
  • C = Common (blue)
Condenser Wiring
  • R = 24V power (red)
  • C = Common (blue)

To install the Ecobee smart thermostat, I will need to add the PTK converter to the York Diamond 80 furnace's control board (since the Common wire is missing):


Is replacing the White-Rodgers Thermostat worth all of the effort?


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