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WHL-004 REV. 12.17.14
D. TIGHTENING WATER HEATER COLLAR TO EXHAUST VENT AND INTAKE PIPE
This appliance uses 2” or 3” diameter pipe for exhaust vent and intake pipe. In order to use 2” pipe, it is required to reduce pipe size in
a vertical length of pipe with a reducing coupling (
not included). Follow the steps below to install 3” pipe into the appliance collar. See
Figure 6 for additional details.
1. Clean and dry the appliance connection. DO NOT use primer or cement on the appliance connection.
2. Push the length of pipe into the connection until it touches the bottom of the fitting.
3. Tighten the clamps using a screwdriver.
4. Ensure the pipe is secure before continuing installation.
5.
For 2” installations, install a reducing coupling in a vertical section of pipe. See Figure 7.
Figure 6
– Correct Installation into the Water heater Collar
Figure 7
– Transitioning from 3” to 2” Vent Pipe
E. VENT TERMINATION
1. Two Pipe Roof and Sidewall Vent Terminations
Figure 8
– Direct Vent, Roof and Sidewall Vent Terminations
All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of ¼” per foot back to the appliance to
allow drainage of condensate. When placing support brackets on vent piping, the first bracket must be within 1 foot of the appliance and
the balance at 4 foot intervals on the vent pipe. Appliance venting must be readily accessible for visual inspection for the first three feet
from the appliance.
