Rinnai RHFE-431FA Owner's Operation And Installation Manual page 54

I TYPES COMPATIBLE WITH EXTENSION SET
RHFE-431FA
INSTALLING AN EXTENSION KIT
Installing an extension kit requires construction of an air line and the exhaust line. The air line is connected
between the Air Supply Elbow at the rear of the heater and the air inlet port on the Flue pipe.
Similarly, the exhaust line is connected between the joint pipe at the rear of the heater, and the exhaust
port on the Flue pipe.
Caution: Check to see there is no debris inpipe or hose.
I HOW TO INSTALL
MODEL:RHFE-431FA
Example:Using 2 sets of extension set and 1 bent set.
Pipe stopper A
Pipe stopper B
Air intake elbow
(comes with main unit)
Vent manifold
(comes with main unit)
Hose joint
Air intake hose
Pipe stopper A
Bent elbow
Pipe stopper A
Hose joint
Pipe stopper B
Exhaust pipe
Pipe stopper A
Pipe stopper B
Example:Using 80 inches slide pipe set.
Vent manifold
(comes with main unit)
Air intake elbow
(comes with main unit)
Pipe clamp
Pipe clamp Pipe clamp
Pipe clamp
Pipe clamp
Air intake hose
– 52 –
Pipe stopper A
Pipe stopper B
Exhaust pipe
Pipe stopper A
40 inch straight pipe
Pipe stopper A
Hose joint
Pipe stopper B