80 Installing a Common Vent System
2. Assemble the wye joint or wye assembly to the vent pipe.
Apply solvent cement to the mating surfaces.
Apply
Cement
Hub Wye Assembly
Apply
Cement
Hub Reducing Wye Assembly
Note
The options shown here are only examples. The setup
you choose will vary based on the installation location,
local building codes, and other factors. The installer is
responsible for all equipment and detailing required
by local codes.
DANGER
If the connections leak, harmful flue gas may cause personal
injury or death. After completing the installation and filling the
boiler with water, turn on the boiler and test for leaks using a
bubble test kit. After applying the soap solution, bubbles will
form on the connection if any leaks exist.
9.3.3 Assembling the Wye Joint
1. Assemble the hub wye, the 8” to 3” reducer, and the 90º elbow
into the common vent. You can also use the hub reducing wye
and the 90º elbow to assemble the common vent. Apply the
proper solvent cement to the mating surfaces.
Apply Cement
Apply Cement
Hub Wye, 8" to 3" Reducer, 90˚ Elbow
Apply Cement
Hub Reducing Wye and 90˚ Elbow
Note
Multiple reducers can be used to allow proper
connection of 3" vent pipe to the common vent
system.
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