Sidewall Termination And Fittings; Multiple Vent And Air Terminations - Watts Aerco TAG-0072 GF-146-E Operation & Maintenance Manual

AM Series Boiler & Water Heater User Manual
CHAPTER 6: INSTALL – VENT & COMBUSTION AIR PIPING
Figure 6-6: Separate Air Intake and Vent Pipes Sidewall Termination

6.5.12 Sidewall Termination and Fittings

Ensure the following when installing through sidewalls:
•
The air termination coupling must be oriented at least 12 inches above grade or snow line
as shown in Figure 6-5.
•
Maintain the required dimensions of the finished termination piping shown in Figure 6-5.
•
Do not extend exposed vent pipe outside of the building more than what is shown in
Figure 6-5. Condensate could freeze and block vent pipe.

6.5.13 Multiple Vent and Air Terminations

When installing multiple air and vent terminations, ensure the following:
•
Terminate each vent/air connection as shown in Figure 6-7.
•
All vent pipes and air inlets must terminate at the same height.
•
Place wall penetrations to obtain minimum clearance of 12 inches between edge of air
inlet and adjacent vent outlet, as shown in Figure 6-7 for U.S. installations. For Canadian
installations, provide clearances required by CSA B149.1 Installation Code.
•
The air inlet is part of a direct vent connection. It is not classified as a forced air intake
with regard to spacing from adjacent appliance vents.
OMM-0100_E • GF-146 • 11/15/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 76 of 170