Installation Guide

Polypropylene (PP) Common Venting Installation Instructions 27
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Installaon Instrucons
Back to back Conguraon (2 to 8 water heaters)
In Line Conguraon (2 to 8 water heaters)
Follow these Rinnai instrucons, the Rinnai Installaon and operaon Manual and the Ubbink Vent System
Assembly instrucons located in the appendix of this manual.
Install the venng according to one of the 2 conguraons below. Do not locate the common vent header
remotely from the water heaters. (Room air conguraons follow the same instrucons excluding
informaon regarding air intake.)
The installaon area should be measured to make sure that adequate space is available to install the water
heaters and venng system.
NOTE: Dimensions above
are used in all back to back
configurations
Note: If water heaters are mounted directly on a wall, air intake piping will need to be in front of the
appliance adapters. Installer is responsible for installing appropriate support for the vent system.
20.5” (520mm)
TYPICAL
20.5” (520mm)
TYPICAL
3°
1”
(25mm)
2”
(51mm)
3”
(76mm)
AIR
INTAKE
7”
(187mm)
6.25”
(159mm)
3°
1”
(25mm)
2”
(51mm)
3”
(76mm)
AIR
INTAKE
4”
(101mm)
5”
(127mm)
6”
(152mm)
7”
(178mm)