Installation Guide

Polypropylene (PP) Common Venting Installation Instructions 19
Copyright © 2018 Rinnai America Corporation. All Rights Reserved.
Horizontal Terminaon Clearances
This appliance along with the Common Vent System is cered with the 3”, 4”, 6” Wall Terminaon mounted
in the orientaon shown below.
The exhaust and combuson air terminaons must follow these clearances:
• 12 inch minimum vercally from boom of combuson air terminaon to ground or ancipated snow
line.
• 12 inch minimum from edge of exhaust terminaon to edge of combuson air terminaon.
There should be a minimum of 36 inch between exhaust terminaons in mulple common vent installaons.
Refer to the Rinnai installaon and operaon manual for maximum vent lengths based on the vent diameter
installed.
NOTE: During colder weather when the exhaust
temperature is much hoer than the outside air, the
exhaust fumes will condense, producing water vapor.
As a result a plume of water vapor may be seen leaving
the exhaust.
EXHAUST
VENT
COMBUSTION
AIR VENT
Vent Size Separaon Distance
3”, 4”, 6” 12” Minimum
• MINIMUM 12”
From Exhaust Vent to Combustion Air Vent:
• Minimum 12”
COMBUSTION AIR IS NOT ALLOWED
IN THE SHADED AREA
Combustion
Air Vent
Combustion
Air Vent
Combustion
Air Vent
Combustion
Air Vent
Combustion
Air Vent
Min 12” above grade or
anticipated snow level
Exhaust
Vent