Gas Fireplace Vent Pipe Clearance

Clearances for direct vent pipe may vary and these clearances will be specified by the manufacturer of your direct vent appliance.

Gas fireplace vent pipe clearance. Materials and construction 020 aluminum inner wall. 018 galvanized steel outer wall. 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. The general rule of thumb however is a 1 inch clearance all the way around for vertical vent runs.

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. Fire clearances required range from 6 to 36 depending on the equipment. Directvent pro is a unitized coaxial concentric venting system designed for use with direct vent gas or propane stoves heaters and fireplaces.

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. It typically has a 1 inch clearance when it is run vertically but when it is run horizontally the clearance requirements vary. 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. On 2019 03 22 by mod direct vent gas fireplace clearances.

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. Dura vent type b gas vent pipe wall strap for vent pipes with a 4 inch diameter 4gvws duravent directvent pro 4x6 co linear masonry chimney conversion kit 35 ft. Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles.

Double wall stovepipe is used when you don t have 18 or more clearance from combustibles. Here is the valor horizon direct vent gas fireplace heater manual l pdf if you don t already have a copy the vent must be at least 12 above grade level per the manual p. This article series describes b vent metal chimneys used for gas fired appliances. 24 as shown in your drawing water can enter the vent assembly causing rust damage safety concerns.

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. 9 is a typical clearance between a gas fired boiler or furnace flue connector and combustibles.