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Heat Commander Furnace Installation and Operation Manual
17
4.1.3 Minimum chimney height
The top of the chimney should be tall enough to be above the air turbulence caused when
wind blows against the house and its roof.
- The chimney must
extend at least 3 ft. (1 m)
above the highest point
of contact with the roof.
- Extend at least 2 ft.
(61 cm) higher than any
roof line or obstacle
within a horizontal
distance of 10 ft. (3 m).
4.2 The connector pipe
o Recommended inner diameter: 6" (152 mm)
• If an increaser must be used (max 6" (152 mm) to 7" (178 mm)), it must be
installed as close as possible to the chimney.
4.2.1 Best practices and requirements of the installation code
o Where passage through a wall or partition of combustible construction is desired,
the installation shall conform to CAN/CSA-B365, Installation Code for Solid-Fuel-
Burning Appliances and Equipment;
o A flue pipe must never pass through a combustible floor or ceiling or through an
attic, roof space, closet or concealed space;
o Minimum upward slope towards the chimney: 1/4 in/ft. (20 mm/m);
o The maximum horizontal run is 10’ (3 m). Do not count the starting elbow;
o All flue pipe joints must be secured with three screws. Failure to secure them to
each other may allow for separation and leaks;
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