Double Wall Water Heater Vent Pipe Clearance

Metal single wall generally requires 6 inches of clearance.

Double wall water heater vent pipe clearance.

Single wall vent pipes cannot pass through a ceiling floor firewall or 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. With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof. An exception is made for non combustible walls such as solid masonry or concrete.

Transite generally requires 1 to 3 inches depending on various factors. Type b vents ceiling floor wall clearances b vent clearances to combustibles clearance distances for a b vent to combustible materials in floors walls ceilings attics roofs. 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.

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. Aluminum 020 inner wall galvanized 021 outer wall. Such installation could create pyrophoric conditions and a fire hazard. Metal double wall b vent requires 1 inch minimum clearance.

Direct vent water heaters. 6 minimum clearance from single wall vent pipe or flue vent connector to any combustible material. Clearances 1 clearance to combustibles in single and multi family dwellings. Typical listed and labeled double wall vent pipe clearance to combustible materials is one inch but you should always check before installation.

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. 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. Furnace water heater vent pipe clearance double wall. 4 5 and 6 oval.

3 16 diameters feature twist lock fittings screws required for 14 and larger diameters. Note some modern high efficiency water heater may have pvc vents. Water heater vent pipe clearances and restrictions. This article series describes b vent metal chimneys used for gas fired appliances.

Metal vents that are too close to wood or combustionable materials may cause the wood to burst into flames. Each type of vent pipe has recommended clearances to combustible materials. 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. Round type b gas vent 18 3.

For gas fired water heater vents.