Double Wall Water Heater Vent Pipe Clearance

Each type of vent pipe has recommended clearances to combustible materials.

Double wall water heater vent pipe clearance.

4 5 and 6 oval. Aluminum 020 inner wall galvanized 021 outer wall. Exhaust gases are vented outdoors through a separate vent duct or through a separate chamber of the same pipe this requires a double wall vent duct. Maximum horizontal section of the furnace water heater double wall vent pipe cannot be longer than 100 of the vertical vent pipe length.

Such installation could create pyrophoric conditions and a fire hazard. Transite generally requires 1 to 3 inches depending on various factors. Metal single wall generally requires 6 inches of clearance. Diameters 3 30 round diameter.

We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys. Amerivent is a complete gas venting system from 3 to 30 pipe diameters in 7 different pipe lengths to single to multi appliance hook ups. 6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material. Trim back the wood shift the vent or.

Single wall gas water heater vent pipe connector cannot be installed closer than 6 from any combustible materials such as floor wall framing paper etc. Typical listed and labeled double wall vent pipe clearance to combustible materials is one inch but you should always check before installation. Each of these ameri vent gas pipes features rugged double wall construction with aluminum alloy 1100 3003 or 3105 inner pipe and corrosion resistant galvanized steel outer pipe. Note some modern high efficiency water heater may have pvc vents.

Metal double wall b vent requires 1 inch minimum clearance. Clearances 1 clearance to combustibles in single and multi family dwellings. One of the fire safety features of double wall type b gas vent is that its outer wall insulated by the airspace beneath it requires only 1 clearance to combustible material in the structure. 3 16 diameters feature twist lock fittings screws required for 14 and larger diameters.

An exception is made for non combustible walls such as solid masonry or concrete. Direct vent water heaters. With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof. Single wall vents should have a minimum of 6 inches of clearance and double wall sometimes called a b vent should have 1 inch minimum clearance.

Water heater vent pipe clearances and restrictions. For gas fired water heater vents. Round type b gas vent 18 3. Single wall vent pipes cannot pass through a ceiling floor firewall or wall.

Furnace water heater vent pipe clearance double wall.