Installation manual

Rinnai CVent 20
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)
Refer to the Ubbink appendix of this manual for the vent system assembly instrucons.
Follow these Rinnai installaon instrucons in this manual in addion to the Ubbink vent system assembly
instrucons.
Install the venng according to one of the 2 conguraons below. Do not locate the common vent remotely
from the water heaters.
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. The intake header in the drawing above has been removed for illustraon purposes.
TYPICAL
20.5” (520)
3°
1”
(25mm)
2”
(51mm)
3”
(76mm)
EXHAUST
AIR
INTAKE
7”
(178mm)
6.25”
(159mm)
1”
(25mm)
2”
(51mm)
3”
(76mm)
3°
4”
(101mm)
5”
(127mm)
6”
(152mm)
7”
(178mm)
TYPICAL
20.5” (520)
AIR
INTAKE
EXHAUST