What is Type B gas vent pipe used for?
Type-B Gas Vent is a chimney venting system that is specifically designed to make use of air within the room to aid combustion. Type-B DuraConnect Gas Vent Pipe is a low-cost, space saving chimney venting system that is relatively easy to install.
Do you need a thimble with B vent?
You should not use a thimble for B vent (which that is) through a ceiling, you need a firestop. That collar is probably supposed to be a firestop, but may not be approved, check your ahj. B vent firestop is usually a flat sheet metal plate.
What does Type B Gas Vent mean?
Type B vents are vents suitable only for listed, draft-hood equipped, gas-fired appliances, including most domestic heating and hot water systems.
Is B vent single or double wall?
AmeriVent Type B gas vent uses a double wall of metal pipe for insulation and safety. The inner pipe of reflecting aluminum heats quickly, containing the warm flue gases inside. The airspace between the inner and the outer pipes provides insulation against heat loss to keep the warmer flue gases on the rise.
Can I cut B vent pipe?
2 Answers. The short answer is no. B-vent cannot be cut.
Can you spray foam around B Vent?
Caulk this wood blocking to the framing (Source). Seal the gap between the flue and metal flashing with a high-temperature caulk. Warning: Do not use spray foam for any of the joints near a vent pipe. Always use fire-resistant caulking.
When should you use a wall thimble?
Running any residential or building heating appliance, burning gas, liquid, or solid fuels through a combustible wall, will require an Insulated Wall Thimble as your passageway to connect appliances to interior or exterior masonry chimneys.
How far can you run B vent horizontal?
The vent horizontal could be 1/3 the vertical. So if you had 24 feet of vertical, your horizontal could be 8 feet. If you go up a pipe size, there is no limit.
What is the clearance for B vent?
1-inch
A 1-inch clearance (air space) to combustible materials must be maintained, when using DuraVent Round B-Vent, regardless of the pipe diameter. at least 2 feet higher than an adjacent wall or obstruction, if it is within 8 feet.
https://www.youtube.com/watch?v=c1Q2ELBUPq4