e.alleg wrote:The only info I can find is from the outdoor boiler sites, they have the circulator running constantly and the thermostat controls the forced air fan, this doesn't seem right except for the fact that wood is "free" and they need the water flowing so it doesn't freeze up.
I run a Modine fan off my boiler and I used a Honeywell L6006 to control the fan. When the boiler temperature gets to a certain point, the fan will start and when the boiler temp falls below a set point, the fan will go off. The circulator to the Modine is controlled by a B aquastat, which closes on temperature rise, and a relay.
The circulator won't start until the aquastat senses its set point and the Modine won't run until its set point.
Maybe this is how your house is set up. I don't know.