Gas Fireplace Vent Pipe Clearance

018 galvanized steel outer wall.

Gas fireplace vent pipe clearance.

On 2019 03 22 by mod direct vent gas fireplace clearances. Run dura vent directvent pro 5 inch inner diameter galvanized vent pipe extension 16 inch length. 24 as shown in your drawing water can enter the vent assembly causing rust damage safety concerns. Clearances for direct vent pipe may vary and these clearances will be specified by the manufacturer of your direct vent appliance.

Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles. Fire clearances required range from 6 to 36 depending on the equipment. Class a chimney usually has a 2 inch clearance to combustibles and a type b gas vent normally has 1 inch clearance. Vent pipe for a direct gas fireplace is unique.

Directvent pro is a unitized coaxial concentric venting system designed for use with direct vent gas or propane stoves heaters and fireplaces. Double wall stovepipe is used when you don t have 18 or more clearance from combustibles. Using a heat shield on a single wall stovepipe allows you to reduce the clearances from 18 to 6 to the wall and 9 to the ceiling. 9 is a typical clearance between a gas fired boiler or furnace flue connector and combustibles.

Materials and construction 020 aluminum inner wall. We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys. Heat n glo direct vent gas fireplaces are designed to oper ate with all combustion air siphoned from outside of the building and all exhaust gases expelled to the outside. Metal flue fire clearance requirements single wall metal pipe flues gas fired equipment.

The general rule of thumb however is a 1 inch clearance all the way around for vertical vent runs. 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. Gas appliance direct vent clearances distances from direct gas vent to building features sidewall vent direct vent direct exhaust systems for gas fired heaters water heaters other appliances. For minimum clearances see the direct vent termination clearance diagrams on pages 19 and 20 in this manual.

Table illustrations of the required space between a direct or side wall vent for a gas fired heating appliance and building windows doors corners gas meter air intakes sidewalks balconies. This article series describes b vent metal chimneys used for gas fired appliances.