American Energy Systems MagnuM T40 - Manual (Page 11)

11
OUTSIDE MAKE-UP AIR FOR COMBUSTION IS REQUIRED ON ALL INSTALLATIONS
1) For FREESTANDING installations with horizontal through-the-wall exhaust, it is REQUIRED that
the stove combustion air intake be connected to a fresh air intake outside. If the home is newer or has
been tightly insulated it is imperative to the operation of the unit to install outside combustion air. If
you do not, then an additional 6 inch intake into the furnace room in the basement is required.
2) Connection to outside the house is REQUIRED for mobile home installations.
3) The outside air tubing must be a minimum of 3” inside diameter. It is recommended that the tubing
be non-combustible materials but is not required.
4) If the air inlet is connected to the outside, it MUST be terminated with a vertical 90-degree bend
(down) or with a wind hood. Failure to do so could result in a burn back during high winds blowing
directly up the air inlet during a simultaneous power failure (see diagram above).
5) It is important not to terminate the inlet of the fresh air intake too close to the venting outlet for the
smoke. It is recommended that the inlet for the fresh air is a minimum of 3 feet away from the venting
outlet and at least 1-2 feet below.
6) Blockage, excessive length, or bends in the air intake pipe will starve the stove of combustion air. A
90-degree bend is equivalent in restriction to approximately 30 inches of straight inlet pipe.
DESIGN GUIDELINES FOR OUTSIDE COMBUSTION AIR CONNECTION
3”