Chimney Connector (Stove Pipe); Importance Of Proper Draft - U.S. Stove Defender II Owner's Manual

CHIMNEY CONNECTOR (STOVE PIPE)

Your chimney connector and chimney must have the same diameter as the stove outlet (6"). If this is not the
case, we recommend you contact your dealer in order to insure there will be no problem with the draft.
The stove pipe must be made of aluminized or cold roll steel with a minimum thickness of 0.021" or 0.53 mm. It is
strictly forbidden to use galvanized steel.
Your smoke pipe should be assembled in such a way that the male section (crimped end) of the pipe faces
down. Attach each of the sections to one another with three equidistant metal screws. Seal with furnace cement.
The pipe must be short and straight. All sections installed horizontally must slope at least 1/4 inch per foot, with
the upper end of the section toward the chimney. Any installation with a horizontal run of chimney pipe must
conform to NFPA 211. You may contact NFPA (National Fire Protection Association) and request the latest edition
of the NFPA Standard 211.
To insure a good draft, the total length of the coupling pipe should never exceed 8' to 10' (2.4m to 3.04 m).
(Except for cases of vertical installation, cathedral-roof style where the smoke exhaust system can be much
longer and connected without problem to the chimney at the ceiling of the room).
There should never be more than two 90 degrees elbows in the smoke exhaust system.
Installation of a "barometric draft stabilizer" (fireplace register) on a smoke exhaust system is prohibited.
Furthermore, installation of a draft damper is not recommended. Indeed, with a controlled combustion wood
stove, the draft is regulated upon intake of the combustion air in the stove and not at the exhaust.

IMPORTANCE OF PROPER DRAFT

Draft is the force which moves air from the appliance up through the chimney. The amount of draft in your
chimney depends on the length of the chimney, local geography, nearby obstructions and other factors. Too
much draft may cause excessive temperatures in the appliance and may cause damage. Inadequate draft
may cause backpuffing into the room and 'plugging' of the chimney.
Inadequate draft will cause the appliance to leak smoke into the room through appliance and chimney
connector joints. An uncontrollable burn or excessive temperature indicates excessive draft.
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