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sgruver78 11-26-2008 01:12 PM

Outdoor Wood Furnace HELP!!!!
So I have an outdoor wood furnace that i just starting using last night. It wasn't fun but i am new to it. My question is should both circulator pumps be running constantly? I have two, one that keeps the existing boiler hot and the pump that runs from the outdoor furnace.

Gary_602z 11-26-2008 02:07 PM

Are you running a water to water heat exchanger? What type of outside furnace and what is the aquastat set to temp wise?


sgruver78 11-26-2008 02:15 PM

i have a water to water heat exchanger and i have it wired to run constantly because someone told me to but i didn't know if there is another way of doing it so it just kicks on at a certain time.

Gary_602z 11-26-2008 03:14 PM

If you have an aquastat on the wood heater that will control your draft to keep your water from the outide at a constant temp. Your circ. pump from the outside furnace should run all the time.


sgruver78 11-26-2008 05:11 PM

thanks gary. do you think its a problem that i keep the pump running on my existing furnace. i am not too familiar with pumps and i didn't know if it would burn out quickly. thanks!

Gary_602z 11-26-2008 05:44 PM

Sorry but I don't really know how your boiler system is set up, but I am sure someone will chime in.


Gary_602z 11-26-2008 08:08 PM

This should give you a rough idea.


hoistdoctor 11-26-2008 10:05 PM

Do you have an hydronic system with an existing boiler in your house? Or do you have a forced air system with a heat exchanger coil in the ductwork above or below the furnace?

TazinCR 11-26-2008 10:19 PM

I had a water furnace once and the pump only circulated the water when the thermostat called for heat. When the thermostat cut out the pump cut off and the fan ran until the limit switch cut it off.

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