Results 1 to 6 of 6
Thread: combustion air
09-23-2010, 10:44 PM #1
at minus 10 celsius or 15 what is the opinion of having combustion air piped to a condensing furnace or from the room which is obviously room temp and if you say comb air from outside will the pipe sweat and should i insulate it.thanks for any comments.
09-24-2010, 06:10 AM #2Professional Member*
- Join Date
- Dec 2002
- SouthEast NC ICW & Piedmont Foothills
what do the mfg's instructions have to say about it?It`s better to be silent and thought the fool; than speak and remove all doubt.
09-24-2010, 06:28 AM #3
09-24-2010, 01:36 PM #4
If you're talking about combustion air for the furnace in the form of pvc attatched directly to the furnace, there is no need to insulate it. If you're drawing combustion air into a mechanical room via a 6" pipe, then yes I would insulate that for sure and probably snorkel it to slow down the rush of cold air entering the room.
09-24-2010, 03:03 PM #5
thanks i will pipe it in since i will change existing abs for the proper 636 pipe since somebody installed it 2 years ago that way .
09-24-2010, 04:57 PM #6
Going for a ride in the way back machine here...
Back when I used to install furnaces, and we ran the intake and exhaust through a roof I always cut a tee in the intake and put a plug in there.
Only a few times did I have an intake freeze up, but I was sure glad there was a tee in there and I could pull the plug and run it like that for a day or 2 until it either melted open, or it was safe to get on the roof.
If it vents out the side of the house I don't care, because you can generally get to those to beat the ice off of them."If you call that hard work, a koalas life would look heroic."
VETO PRO PAC, The Official Tool Bag of HVAC-Talk.com
Testo... you guys rule!