Heat Pumps and Electric Heating - Wiring a 2nd thermostat for blower only

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IAMRADTECH
03-16-08, 12:18 PM
How do I wire a 2nd thermostat for blower only to my electric system for outdoor wood furnace?
I want the heat pump thermostat to be set on say 65 and the wood furnace to be set on say 70 the wood furnace thermostat only needs to be able to control fan.
thnx Joe

Ed Imeduc
03-16-08, 12:31 PM
Not sure what you have there now to make the blower come on. So lots of ways to do it. Could put 24v relay for on and off at the motor and run 2 wire to the new tstat put them on R and W. This way when it calls for heat it should close the relay on the blower motor to make it run. Think about it and draw it out on paper first
doug321
03-16-08, 04:13 PM
Buy a cheapo heat only thermostat and wire its two terminals across the common and fan terminals on your existing thermostat. Whenever the temperature falls to 70 the fan will turn on and stay on until the temp is above 70.