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airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 7738
Experience:  Furnace, A/C and heat pump specialist.
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I have a Carrier Weather Maker 1200 propane furnace. Heat

Customer Question

I have a Carrier Weather Maker 1200 propane furnace. Heat only. Old thermostat gone. Four wires sticking out of wall: Red, yellow, green, black. Bought Honeywell CT87K thermostat to replace missing thermostat. Which wires from furnace get connected to the R, W, and Y terminals on the new thermostat?
Submitted: 3 months ago.
Category: HVAC
Customer: replied 3 months ago.
Which wires (red, yellow, green, black) get connected to the R, W, and Y terminals on the new thermostat?
Expert:  airheatman replied 3 months ago.

You will only need 2 wires. One to R and the other to W. We need to pen furnace though and see where the wires are connected in furnace to know which two to use.

Customer: replied 3 months ago.
Thanks. Opened furnace. Found the red wire connected to R terminal and yellow wire connected to W terminal. It's all very clear now. Job done. Thanks again.
Expert:  airheatman replied 3 months ago.

If you have further questions, please let me know.

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