I've been thinking about adding a 3-wire motorized damper to let more combustion air into the boiler room for our Tarm Solo Innova 50 gasifier. I currently have a six inch diameter round opening for combustion air on an outside wall of a 8' by 12' boiler room. That's about a 27-28 square inch opening, and what the manual calls for. There are no other window openings.
Even after a thorough cleaning of all boiler components, the flue, and the outside combustion air opening, I've noticed flue temps approaching 500 degrees Fahrenheit (260 Celsius). However, when the outside door to the boiler room is open, flue temps rapidly drop about 75 degrees F. The manual says I should be running flue temps of around 213 degrees F.
The boiler has a induced draft fan which is working fine. The chimney appears to be drawing well, and everything else seems to be working as it should. The wood I am burning (oak, locust, cedar, cherry) if anything is on the too dry side. Got moisture readings around 15 yesterday for my first burn this season. The flame in the lower combustion chamber is yellow and pale bluish as called for by the manual.
1. if you are letting in outside combustion air, about how many square inches of opening do you have?
2. Do you think it is a good idea to increase the size of my combustion air opening?
3. What size rectangular motorized damper (opening) would you recommend?
Thanks for your advice.
Mike
Even after a thorough cleaning of all boiler components, the flue, and the outside combustion air opening, I've noticed flue temps approaching 500 degrees Fahrenheit (260 Celsius). However, when the outside door to the boiler room is open, flue temps rapidly drop about 75 degrees F. The manual says I should be running flue temps of around 213 degrees F.
The boiler has a induced draft fan which is working fine. The chimney appears to be drawing well, and everything else seems to be working as it should. The wood I am burning (oak, locust, cedar, cherry) if anything is on the too dry side. Got moisture readings around 15 yesterday for my first burn this season. The flame in the lower combustion chamber is yellow and pale bluish as called for by the manual.
1. if you are letting in outside combustion air, about how many square inches of opening do you have?
2. Do you think it is a good idea to increase the size of my combustion air opening?
3. What size rectangular motorized damper (opening) would you recommend?
Thanks for your advice.
Mike
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