INSTALLATION
CHIMNEY HEIGHT REQUIREMENTS
The chimney must extend 3 feet above the level of roof penetration and a minimum of 2 feet higher than any roof surface within 10 feet (see below). Check with your local building officials for any additional requirements for your area.
Due to prevailing winds, local terrain, adjacent tall trees, a hill, or ravine near the home, or adjacent structures, additional chimney height or a special chimney cap may be required to ensure optimum performance.
DRAFT REQUIREMENTS
The appliance is merely one component of a larger sys- tem. The other equally important component is the vent- ing system. This is necessary for achieving the required flow of combustion air to the fire chamber and for safely removing unwanted combustion byproducts from the appliance. If the venting system's design does not pro- mote these ends, the system may not function properly.
Requires a listed termi- nation cap
Top of the flue must be 2’ (610 mm) higher than any part of roof within 10’ (305 cm)
h i t l
Top of the flue must be 3’ (915
mm)higher than highest point of roof penetration
These rules are minimums. In some instances, chimney height may need to be increased to achieve sufficient draft.
Poorly functioning venting systems may create per- formance problems as well as be a safety hazard (i.e. an oversized chimney may result in less than optimum performance. Installations into a large, masonry chim- ney may require a liner to improve performance). A draft test should read greater than .04' W.C. (inches water column) and less than .08" W.C.
American National Standards Institute ANSI/NFPA 211-
To achieve a stable draft, the total flue height required (from the appliance to termination) is 12 to 15 feet mini- mum.
For Manufactured (Mobile) Homes Only: Portions of the chimney and termination that exceed an elevation of 13½ feet above ground level may be designed to be removed for transporting the manufactured home.
92, draft
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