Installation Guide

44 Rinnai Tankless Water Heater Installation and Operation Manual
1. Remove and discard screw from
combustion air vent connection.
2. Remove and discard the combustion
air vent cap.
3. Install the intake air pipe. Ensure it is
properly seated.
Secure the intake air pipe to the
combustion air vent connection with the
supplied screws.
Room Air: Installation Instructions
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.
Supplied screw
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 34
Figure 35
Figure 36
Figure 37
Figure 38
Intake Air Pipe
Supplied screws
Exhaust vent pipe
Supplied screws