Do you have any more details on this? Is the idea to create some restriction in the plenum?I installed a manual damper this year on the plenum and saw a drastic increase in supply temps,
Do you have any more details on this? Is the idea to create some restriction in the plenum?I installed a manual damper this year on the plenum and saw a drastic increase in supply temps,
Sorry I should of said register, Im blowing hot air into the basement which is then being recycled through the furnace boosting my supply temp, the warmer the return air the hotter the supply. From your pics it looks like you’re drawing your return for the basement?Do you have any more details on this? Is the idea to create some restriction in the plenum?
You have no dampers on your supply lines, or adjustable registers?Do you have any more details on this? Is the idea to create some restriction in the plenum?
Wouldn't that be like perpetual motion?Sorry I should of said register, Im blowing hot air into the basement which is then being recycled through the furnace boosting my supply temp, the warmer the return air the hotter the supply. From your pics it looks like you’re drawing your return for the basement?
Yes, generally. Air temp in basement is between 62F-65F, floor to ceiling. It’s just being warmed by whatever heat comes off the furnace door.From your pics it looks like you’re drawing your return for the basement?
The floor registers are adjustable. No other dampers in the ducting…You have no dampers on your supply lines, or adjustable registers?
Partially closing those would produce static pressure in your supply system...it could be set by using the manometer...I've never seen Lamppa mention it, but most wood furnaces call for about .2" WC (max IIRC)The floor registers are adjustable. No other dampers in the ducting…
Correct but its a 4x10 register that I keep partially closed, the original reason was to help shed heat in a power outage but I noticed that the return air had jumped about 5 degrees from 75 to 80 bumping my supply temps to about 103 with the computer on low and the blower on low.Wouldn't that be like perpetual motion?
I made this adjustment over the weekend and think that did improve the heat delivery. Maintained 69-70F on smaller more frequent loadings. Computer set to High. Not quite as cold as last week, but we did have windchill values of 8F outside, so I took that as a win.Partially closing those would produce static pressure in your supply system...it could be set by using the manometer...I've never seen Lamppa mention it, but most wood furnaces call for about .2" WC (max IIRC)
Drill a hole, install it between the furnace and the baroTesting through the baro-damper (12 inches up from stove connection), I get a draft reading of .03-.04.
Testing through the pilot holes in the computer controlled damper, I get .04-.05
Testing through my chimney cleanout door, I get .03-.04
I would say your "cold" cold air return is a very likely contributer to your issue. The less you have to heat the return air the better. I would as you suggested bypass the cold air return to troubleshoot and try using the air closest to the ceiling in the basement. Check these results and go from thereThe ductwork down there is admittedly a mess. Whoever did that install made some crazy choices. I’m kind of retrofitting and I’ll address that over time. Air temp at the ceiling is around 65F. I just moved my thermometer to see where it’s at on that return. Wondering if it’s worth abandoning the return and grabbing air from ceiling height.
The flue has a 6” to 8” adapter on it inside the clay thimble. That adapter is tight to the walls of the clay and much further in than that fiberglass. Was a temporary test to see if it improved draft in case of a leak. It’ll go away when I get the new liner. It’s not fireproof, but I believe combustion temp is at least 1000F. I just didn’t have rock wool on hand.
I moved the low limit this evening and re-set it to 105. Anything higher than that and the fan will cycle on off. The temp in the living space is holding 68, but it’s “only” 21F outside now.