5 in. x 3 ft. Round Type B Gas Vent Pipe Light-weight and rugged, the American Metal Light-weight and rugged, the American Metal Products 5 in. x 36 in. Round Type B Gas Vent Pipe features an aluminum and steel double-wall construction that is corrosion-resistant. With ends and fittings constructed with snap-lock coupling, it is a safe and secure fit for 5 in. pipes.
See the complete table of the "Capacity of Type B Double Wall Vents with Type B Double Wall Vent Connectors Serving a Single Appliance", Table C-9-B in Appendix C. New York 1984 Uniform Fire Prevention and Building Code, Article 10, Heating, Ventilating, and Air Conditioning Requirements Flue Design Is Critical For Furnace InstallationsNov 20, 2001 · By the way, some installers who become frustrated by the difficulty in mating double-wall flue pipe bend in the inner lining to defeat the troublesome locking mechanism to ease assembly. This can cause a flue system to malfunction from restrictions and/or because the dead insulative air space between the flue pipe walls has been compromised.
Metal single wall vent pipe. 2. Metal Double wall vent pipe, often called B vent pipe Each type of vent pipe has recommended clearances to combustible materials. 1. Metal single wall generally requires 6 inches of clearance. 2. Metal Double wall / B vent requires 1 inch minimum clearance. 3. Transite generally requires 1 to 3 Sizing Guide - Hart and CooleyHart & Cooley 5030 Corporate Exchange Blvd. SE Grand Rapids, MI 49512 P (800) 433-6341 F (800) 223-8461 hartandcooley
Apr 24, 2019 · Also, typically, single wall flues for gas furnaces have a 6" clearance to combustibles, and double wall (Type-B) flues require 1". Gas- and wood-burning appliances have different clearances, as you probably know. In your area, arent there draft-stopping/fire-stopping issues that