Rinnai RUR98i Manuel D'installation Et D'utilisation page 26

Installation of PVC/CPVC Vent and Intake Air Piping:
DO NOT apply PVC glues, solvents, or cleaners to the water heaters intake or exhaust gasket connections.
The RUR series units do not require additional parts to be used with standard 3" 3rd party solid core PVC/CPVC
pipes; refer to figure below for required parts for 3" PVC/CPVC assembly configuration.
3" SCH 40 PVC/CPVC Elbows
(female unthreaded socket ends)
Components by others
(displayed as example),
not included with unit
Included with
(To be removed and discarded
for twin pipe configuration)
Conversely, the RUR series units require 2 additional (4"x 3" Flush – Schedule 40 PVC) bushing to be used with
4" SCH 40 PVC/CPVC Elbows
(female unthreaded socket ends)
Components by others
(displayed as example),
not included with unit
Included with
(To be removed and discarded
for twin pipe configuration)
Failure to correctly assemble the components according to these instructions may result in property damage,
personal injury, or death.
26
Required Parts For 3" PVC/CPVC Assembly Configuration
Combustion Air
Intake Cap
Required Parts For 4" PVC/CPVC Assembly Configuration
4" PVC/CPVC assembly configuration (refer to figure below).
Combustion Air
Intake Cap
WARNING
Exhaust
3" standard - wall white
PVC/CPVC unthreaded pipe
Exhaust
(SCH 40 PVC/CPVC) or any other
3" standard - wall white
PVC/CPVC unthreaded pipe
WARNING
KBP Series Manual
(SCH 40 solid core)
Exhaust Adapter Ring
(To remain, required for
twin pipe configuration)
4"X 3" flush bushing
reducer type fitting
(SCH 40 solid core)
Exhaust Adapter Ring
(To remain, required for
twin pipe configuration)