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CHIMNEY REQUIREMENTS
The chimney should extend at least 3’ above a flat roof or the highest roof ridge (see Fig.
2)and be free in a radius of 30’ of objects such as tree limbs, other buildings, etc, which may cause a down draft. The chimney should be lined as required by the local Gas Company or local codes.
Some utilities require new chimney liners for all gas installations. Use a corrosion resistant chimney liner (approved for gas service) of the same size as the vent pipe.
