Feeding Air to the Fire

The vent piping for the outside air delivery to the wood stove was finished this week. The outside piping was already installed last week.

New external air vent

New external air vent.

Regular dryer venting was used to connect to the pipe where it enters from outside and to the pipe that goes into the ground below the slab.

Air vent connected inside

Air vent connected inside

The chase under the floor that carries the cold water return piping doubles as the chase for the air supply for the wood fire. The pipe will be caulked and joints taped after hookup to prevent leaks into the house so the air will get to the fire without much loss. A  wye connector was installed to route the intake air through the chase–the boiler return water pipe (1″ pex) is routed through the vertical part of the wye.

Joins to cold water pipe chase

Joins to wood boiler’s return water pipe chase

The entry pipe hangs below the valve manifold for the radiant heat.

Flexible vent pipe under boiler piping

Flexible vent pipe under boiler piping

Where the pipe exits the floor at the stove, a tee is installed instead of a wye because I had one on hand. I will use a sharkbite elbow to extend the pipe out to the boiler loop. The vent piping is connected directly to the stove air intake–keeping as much outside air feeding the fire instead of sucking air from the room and providing some insurance against backdrafting smoke into the house when it is sealed up tight.

Flexible vent to wood boiler

Flexible vent from cold water chase to wood boiler

Plumbing for the wood boiler has been ordered, maybe we’ll get a chance to try it out when the temperature drops. Lots to do and figure out yet though.

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