Rinnai Demand Duo CX Series Installation Instructions Manual page 31

Non-Direct Vent
2
1. Remove and discard screw from
combustion air vent connection.
Figure 34
2. Remove and discard the combustion air
vent cap.
Figure 35
3. Install the intake air pipe. Ensure
is properly seated.
Secure the intake air pipe to the
combustion air vent connection with
the supplied screws.
Figure 36
Demand Duo H-Series with SENSEI CX Installation Instructions
(Room Air)
it
Intake Air Pipe
Supplied screws
4. Place the vent screen or room air screen
inside elbow and secure with the supplied
screw. Use the room air screen for
environments where room air is dusty.
Notes:
•
2 in vent screen supplied with
water heater.
•
Room air screen is available as
an accessory.
Figure 37
Elbow
Vent
screen
5. Install the exhaust vent pipe.
Ensure it is properly seated.
Secure the exhaust vent pipe to the
exhaust adapter ring with the supplied
screws.
Figure 38
Supplied screw
Exhaust vent
Supplied
screws
31