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Alpine Supply Company 42 Direct Vent Gas Fireplace
VENTING REQUIREMENTS
VENTING REQUIREMENTS – VERTICAL / HORIZONTAL TERMINATIONS
SIMPSON DURA-VENT DIRECT VENT SYSTEM
(FOR BOTH PROPANE AND NATURAL GAS)
The diagrams show all allowable combinations of straight vertical, offset to vertical, and offset to horizontal termina-
tions with Simpson Dura–Vent systems. Maximum of two 45 deg. elbows are allowed.
If length “B” is increased, length “A” must
be decreased by a corresponding amount.
•
Horizontal venting must be
supported every 3 feet
•
Firestops are required at each
floor level and whenever
passing through a wall.
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