- Feb 11, 2010
- 149
I have almost finished installing my OWB. The last thing keeping me from it is thermostat wiring. My conventional heating system is a variable speed air handler and heat pump combo with electric coils as emergency heat. I'd like to leave that system in place functioning normally in case I'm not home and the fire burns out in my OWB. I was hoping to run a second separate thermostat for the OWB so that it kicks the fan on in the air handler and also opens a zone valve for the water/air heat exchanger in the plenum. I'd like to keep the heat pump system working normally with it's thermostat set a few degrees below the OWB thermostat. Any ideas? My thought was to set the heat pump thermostat such that the fan is set to "ON" rather than "AUTO" and have the second thermostat to be able turn it off as necessary.