Rinnai REU-N2024FF-US, Installation And Operation Manual

Page: 29 / 76

Rinnai Tankless Water Heater Installation and Operation Manual 29
If venting through an exterior wall, align the wall mounting
bracket template (located in literature bag) to the wall and
follow the instructions on the template for appropriate
vent hole location. Use a level to make sure the wall
mounting bracket is even and level.
Remove and discard screw from
concentric flue connection.
Remove exhaust adapter ring (discard for
concentric venting configurations).
Concentric
Vent
Install the concentric vent. Ensure it
is properly seated.
Secure the vent pipe to the concentric flue
connection with the supplied screw.
Concentric Vent Maximum Equivalent Length
Vent Sizes 2 in. X 4 in. 3 in. X 5 in.
Vent Lengths
65 ft (20 m) 150 ft (46 m)
•
45° elbow is equivalent to 3 ft (1 m)
•
90° elbow is equivalent to 6 ft (2 m)
Concentric Pipe Installation Instructions
Important: Install the venting termination according to the diagrams and instructions in
this manual. Slope the venting 1/4 in. per foot toward the appliance according to the vent
manufacturer
’ s installation instructions. Dispose of condensate per local codes.
Concentric Pipe Example Vent Applications
Horizontal Wall Terminations
2 in. x 4 in.
3 in. x 5 in.
Vertical Roof
Terminations
2 in. x 4 in.
and
3 in. x 5 in.
Concentric Pipe Maximum Vent Length
Direct Vent
(Concentric Pipe)
1
2
3
1
4
Mount Concentric Pipe Through Wall
Wall Mounting
Bracket Template
Level
Wall Mounting
Bracket
SAMPLE
Illustrative Purposes Only