Top Take Off From Plenum?

Top Take Off From Plenum?

PostBy: heatwithcoal On: Sun Mar 31, 2013 3:34 pm

I am installing my new LL AK110 :D and am at the point where I am putting the plenum (20x20x24 tall) on and connecting it to a 14" round elbow. I was going to place it on top of the plenum (already cut the hole in top) but have since read that this is not proper practice. I plan on having a few 7" rounds coming off the sides of the plenum. Any insight would be greatly appreciated.

Mark
heatwithcoal
 
Hot Air Coal Stoker Furnace: AK-110
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: AK-110

Re: Top Take Off From Plenum?

PostBy: Rigar On: Sun Mar 31, 2013 4:24 pm

it should be ok in your case from what i understand of what your doing.
Typically its not the best way to connect a branch duct (at top of of plenum)
but from what i remember the 14 inch round is going to act like a main trunk to your upstairs.
I would think in this case you will be fine
Rigar
 
Hot Air Coal Stoker Furnace: Keystoker A 150
Coal Size/Type: anthracite rice
Stove/Furnace Make: Keystoker
Stove/Furnace Model: A 150 warm air furnace

Re: Top Take Off From Plenum?

PostBy: Rigar On: Sun Mar 31, 2013 4:29 pm

one more thing....it could be dampered at the plenum if your worried about it (the 14 inch round)
Rigar
 
Hot Air Coal Stoker Furnace: Keystoker A 150
Coal Size/Type: anthracite rice
Stove/Furnace Make: Keystoker
Stove/Furnace Model: A 150 warm air furnace


Re: Top Take Off From Plenum?

PostBy: heatwithcoal On: Sun Mar 31, 2013 6:35 pm

Thanks Rigar. I have actually decided to run a separate duct system for the furnace across the basement ceiling and not tie into the A/C ductwork in the attic. The 14" round will be the trunk (25ft long). Good point on the damper.

Thanks.
heatwithcoal
 
Hot Air Coal Stoker Furnace: AK-110
Stove/Furnace Make: Leisure Line
Stove/Furnace Model: AK-110