B Vent Installation Through Wall

If you are using a b vent typically a double walled air insulated vent for gas appliances typically you ll see a fire clearance stamped right into the metal of the chimney stating 1 inch minimum clearance to combustibles as you ll see in this photo.

B vent installation through wall.

Clamp bracket securely to pipe section using the. Ul approved type b gas vent products form a continuous passageway from an approved gas appliance to the termination of the vent above the roof of 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. Pass type b gas vent through opening in fire stop support fsp.

Using a wall band assures that the clearance to combustibles is maintained see figure 3. The b vent then fastening to the wall. It is of the utmost importance that type b gas vent be installed. Install the wall thimble by inserting the larger of the two parts on the appliance side and the.

The amerivent all metal double wall gas vent is listed as type b by underwriters laboratories inc. Type b gas vent systems give you these important advantages. The heating appliance vents directly out through a building side wall powered by natural draft provided by the heating equipment typically using a single wall metal flue or chimney or a b vent. And is approved for such residential and commercial applications as category 1 water heaters boilers furnaces space heaters or wall heaters.

Type b gas vent 3 to 12 diameter installation instructions 3 figure 2 figure 3 nail strapping in place four places nail through slots four places figure 4 nail through slots four places 4. This venting method typically for gas fired boilers can be used only by certain heating appliance models such as weil mclain s cgs boilers excluding the cgs 4e model 10. Page 2 a major cause of vent related fires is failure to maintain required clearances air spaces to combustible materials. Install support bracket as shown in figure 1.

Properly installed the vent cannot come apart through vibration and offers protection against vent failure or fire hazard.