It is of the utmost importance that type b gas vent be installed.
B vent wall thimble installation.
Type b gas vent.
Duravent 4 inner diameter type b round gas vent pipe double wall wall thimble.
B it allows disconnection of the appliance for service at any time without disturbing or temporarily supporting the vent.
Type b gas vent 3 to 12 diameter installation instructions 5 a it allows installation of the vent system prior to installation of appliances.
Completely frame in on all four sides a properly sized square opening.
C it provides the required firestop as well as support.
Duraliner masonry thimble l402 installation instruction addendum pdf 1 6mb duraplus.
We have other components that are used to safely support and or firestop the pipe as it passes up through a ceiling.
See local codes for guidelines.
Cut a hole in the outside wall 1 4 larger than the diameter of the sleeve on wall thimble mpt.
B vent wall thimble use for through the wall system to provide clearances for vent from combustibles.
Polypro double wall installation instructions fr pdf 1 8mb polypro for multiple vents dual language pdf 472kb.
One of the fire safety features of double wall type b gas vent is that its outer wall insulated by the airspace beneath it requires only 1 clearance to combustible material in the structure.
Page 1 installation instructions round and oval type b gasvent systems for use with natural as or liquid propane category i and draft hood equipped appliances and appliances listed to use type b gas vent.
Install the wall thimble by inserting the larger of the two parts on the appliance side and the.
B vent will slide through the middle as it passes through the wall.
4 inch round gas vent collection.
Page 2 a major cause of vent related fires is failure to maintain required clearances air spaces to combustible materials.
D it is ul.
Amerivent is a complete gas venting system from 3 to 30 pipe diameters in 7 different pipe lengths to single to multi appliance hook ups.
Adjusts from 3 to 6 to accommodate various wall thicknesses.
It will also provide lateral support for the pipe as it lays horizontally inside the thimble.
The b vent then fastening to the wall.
Using a wall band assures that the clearance to combustibles is maintained see figure 3.