Bring In the Fresh Air

The Combustion Air System (CAS) is a system designed to bring in outside combustion air directly to your wood or pellet stoves. This eliminates the use of conditioned inside air for combustion, improving the efficiency of central heating systems.

Combustion Air System is a patent-pending design that pre-heats combustion air. Inbound air is circulated through baffles around the heated areas of the support box or wall thimble. For PelletVent Pro, the pre-heated air is delivered down a wall channel to assure that the pellet vent is not cooled. For DuraTech and HTC, the preheated air is supplied between the stove pipe's 2nd and 3rd wall, while the 1st wall maintains high stove temperatures.

CAS enables outside air to be used as combustion air below grade. The wall thimbles for both wood and pellet stoves provide combustion air to appliances used in below grade (basement) installations. Wood stoves utilize the triple wall stove pipe. Pellet stoves utilize the adjustable air channel. CAS also minimizes downdrafts in below grade installations. It does not consume warm indoor air for combustion and not subject to oxygen starvation, poor draft and other problems associated with 'tight' energy efficient homes.

This system simplifies installation with only one wall or ceiling penetration, eliminating the need for a second penetration in the building envelope to introduce combustion air. The design is simple and elegant with decorative black finish. All products are factory finished in matte black.

Combustion Air System for DuraTech and DuraPlus HTC

CAS system for DuraTech and DuraPlus HTC can be used with both vertical (through- the ceiling) and horizontal (through-the-wall) chimney installations. DuraTech & DuraPlus HTC CAS wood stove systems are available in 6" and 8" chimney diamaters, using system specific triple-wall connector pipe, elbows, and tees to deliver combustion air to the appliance from outside the room through the chimney penetation in the structure for combustion air intake.

Ceiling Support Box

Fresh Air is drawn and warmed through the top of the ceiling support box in the attic. The air continues down an inner chamber of the combustion air stove pipe, and stubs out at the top of stove or tee. Aluminum flex completes the connection to the appliance.

Specs

Combustion Air Systems for DuraTech and DuraPlus HTC Applications:
Triple-wall chimney system designed to provide air for combustion through its components. Provides a 3" air intake for the appliance.

Materials and Construction
.016" stainless steel inner wall.
.018" galvalume middle wall.
.018" galvalume outer, painted black.

Clearances
6" clearance to walls. 8" clearance to
ceiling on horizontal pipe that runs
below the ceiling.

Diameters
6" and 8"

Listing
ULC-S641
c-UL-us

Looking for Warranty Information please visit Duravent website (listed below)

DuraVent Link for Combustion Air Systems