I want to wire a separate thermostat for my outdoor wood boiler so that just the furnace fan will come on without the propane kicking on. This is a Coleman furnace.
Is this possible and if so, how would I go about doing it?
Have a separate thermostat for a wood boiler
boilerhvac
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Best Answer
You don't offer much detail in your question, so it's difficult to determine exactly what you want to do. If you're just looking for manual control you could just energize the
Gterminal on the furnace, which will run the fan in high speed mode (if the furnace has a variable speed motor). Most thermostats have a switch labeledAUTOandFAN. If you put the switch in theFANposition, theGterminal of the thermostat will be connected to theRterminal (meaning theGterminal is energized).If you want automatic control, you might be able to use a thermostat that has multiple heating controls. Then you might be able to use the
W2terminal of the thermostat to turn on the furnace fan, and the outdoor boiler.Again, without more information it's difficult to tell you exactly what you can/should do.