21
WHL-060 REV. 1.6.16
3. Tighten the clamps using a screwdriver.
4. Ensure the pipe is secure before continuing installation.
5.
For 2” installations, install the reducing coupling in a vertical section of pipe. At least a 6” length of 3” pipe MUST BE
INSTALLED before reducing to 2”. See Figure 8.
Figure 7
– Correct Installation into the Water Heater Collar
Figure 8
– Transitioning from 3” to 2” Vent Pipe
E. VENT TERMINATION
1. Direct Vent, Two Pipe Roof and Sidewall Vent Terminations
Figure 9
– Direct Vent, Roof and Sidewall Vent Terminations
All vent pipes must be glued, proper
ly 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.
