Wood Stove and HVAC Return Duct Proximity

[BeezFun]

How would you control the damper?

Manually. When you light the stove open the damper. When you're not using the stove, close the damper.

 

[BeezFun]

I am ventilation expert I do not recommend doing this because temperature from wood stove is to hot

Too hot for what? The temp at the heat exchanger in the furnace is a lot higher than the temp on the ceiling above a stove.

and the next question is Is your return air space made of combustible material or completely lined with sheet metal

The ceiling above the stove is made out of drywall, why does the ductwork need to be more fireproof than the drywall?

also the forced air systeme will bring the room under negative pressure

Only true if there are no supply ducts in that area and the room is relatively sealed.

And if it's lined with sheet metal it can make noise because it expending do to the heat

That's what happens every time the furnace cycles.

 

[andrehoude]

Too hot for what? The temp at the heat exchanger in the furnace is a lot higher than the temp on the ceiling above a stove.

The ceiling above the stove is made out of drywall, why does the ductwork need to be more fireproof than the drywall?

Only true if there are no supply ducts in that area and the room is relatively sealed.

That's what happens every time the furnace cycles.

In the new houses we do we line the return air with a sort of Cardboard All the contractors like this but it makes a fire hazarded at the entree point of the air

 

[Obed]

BeezFun's comments seem to make sense to me. Also, I think putting an HVAC return above the wood stove is a terrific idea. In our house, we have a high efficiency fireplace with a heat duct that runs from the FP to the ceiling in the hallway at the end of the house. We have a secondary HVAC return in the ceiling beside the FP duct. This setup keeps our entire 2100 SF ranch house warm. The highs the past few days have been in the 40s and the lows have been in the 20s. This morning the temperature of the bedrooms at the farthest end of the house was 65 F; it was 68 F in the living room with just a few coals left in the FP. Using the HVAC return to circulate the warm air is an important component in our ability to heat with wood.

Good luck with your project,
Obed