Wood boiler wiring to fan control on furnace

Donald Blake

I have installed a Central Boiler wood boiler with two hot water coils. One in the duct of my oil furnace and the other in th duct of my heat pump. They told me to wire a separate t-stat to bring the blower on. I was to wire from the t-stat to the G and C on the fan control. When I did that, nothing happened. After looking at the wiring diagram for the oil furnace or heat pump, it looked like I should go with G and R, but that brought both the blower and the outside unit on. Can anyone help? Do I need some additional relay?

don_185

thats simple

The hard part is how are you locking out the oil furnace and
heatpump when you used the wood boiler?

IMHO..I also feel like having forceair connected to a wood boiler is really a big waste of wood without some kind of storage tank.

Oil furnace then the heatpump and now a wood stove!
I'll bet the wife wondering will it ever end.