Gas Fireplace Vent Pipe Clearance

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.

Gas fireplace vent pipe clearance. 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. The general rule of thumb however is a 1 inch clearance all the way around for vertical vent runs. 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. On 2019 03 22 by mod direct vent gas fireplace clearances.

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. Metal flue fire clearance requirements single wall metal pipe flues gas fired equipment. It typically has a 1 inch clearance when it is run vertically but when it is run horizontally the clearance requirements vary. Vent pipe for a direct gas fireplace is unique.

Fire clearances required range from 6 to 36 depending on the equipment. Materials and construction 020 aluminum inner wall. 24 as shown in your drawing water can enter the vent assembly causing rust damage safety concerns. 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. For minimum clearances see the direct vent termination clearance diagrams on pages 19 and 20 in this manual. This article series describes b vent metal chimneys used for gas fired appliances. We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys.

Class a chimney usually has a 2 inch clearance to combustibles and a type b gas vent normally has 1 inch clearance. 018 galvanized steel outer wall. 9 is a typical clearance between a gas fired boiler or furnace flue connector and combustibles. Clearances for direct vent pipe may vary and these clearances will be specified by the manufacturer of your direct vent appliance.

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. Directvent pro is a unitized coaxial concentric venting system designed for use with direct vent gas or propane stoves heaters and fireplaces.