Rinnai SENSEI RSC160i Installation And Operation Manual page 40

1. Direct Vent
Twin Pipe Installation Instructions
The water heater is equipped with a 2 in. (51 mm)
pipe connection. With the use of a pipe reducer,
installers can use a 3 in. (76 mm) pipe for the
combustion air and exhaust.
WARNING
solvents, or cleaners to the water heater's
combustion air or exhaust gasket
connections. Failure to correctly assemble
the components according to these
instructions may result in property
damage, personal injury, or death.
1. Remove and discard the screw from the
combustion air vent connection.
Figure 34
2. Remove and discard the combustion air vent
cap.
Figure 35
40
(Twin Pipe)
DO NOT apply
PVC glues,
Rinnai Tankless Water Heater Installation and Operation Manual
3. Install the combustion air vent pipe. Ensure it
is properly seated.
Secure the combustion air vent pipe to the
combustion air vent connection with the
supplied screw.
Figure 36
4. Install the exhaust vent pipe. Ensure it is
properly seated.
Secure the exhaust vent pipe to the exhaust
adapter ring with the supplied screw.
Figure 37
Combustion Air Vent Pipe
Supplied screw
Exhaust Vent Pipe
Supplied screw