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24 Rinnai Corporation ES38 Manual
Clearances
exhaust pipe to combustibles 1 inch (25.4 mm)
exhaust pipe to non-combustibles zero
Extension Kit Installation
Both the exhaust line and air intake hose are
supported by clamps which are attached to the wall.
A wall fixture can be used to offset the clamp from the
wall. Use Screw B to attach the wall fixture to the
wall. If the wall fixture is not used then use Screw A
and the nut to attach the clamp to the wall.
The air intake hose should always be underneath the
exhaust line so that in case the air intake hose sags it
will not come into contact with the exhaust line.
Clamps
Exhaust pipe
Exhaust pipe
Air intake hose
Air intake hose
The exhaust line is connected between the bent pipe
at the rear of the heater and the exhaust port on the
flue manifold.
Installing the Exhaust Line
To connect exhaust pipes with other straight pipes or
bends, fit the male end into the female end. Use pipe
stopper A to clamp the connection.
Use pipe stopper B to fix the length on the adjustable
exhaust pipes. Do not extend these pipes beyond the
red line.
Do not cut the exhaust pipe. Use the adjustable
pipes if necessary.
To bend the elbow, insert exhaust pipes into both
ends for additional leverage. Bend to desired angle.
Do not straighten the bent pipe attached to the
appliance.
Pipe stopper A
Pipe stopper B
Male end
Female end
Adjust the angle
Connecting the Air Intake Hose
The air intake hose is connected between the air
connection at the rear of the heater and the air intake
port on the flue manifold.
Push the air intake hose onto the flue manifold and
secure with the plastic cable tie.
Join air intake hoses by screwing the hose joint half of
its length into the air intake hose and then screwing
another air intake hose into the hose joint.
The lengths of the air intake hose and the exhaust
pipe must be the same in order for the appliance to
operate properly. The hose can be cut to the required
length. Deburr all rough edges. Do not cut the hose
attached to the appliance.
Support the air intake hose with pipe clamps.
Hose joint
air intake hoses
CAUTION
Use the pipe stoppers, connectors, clamps, and screws according to these instructions in
order to ensure no leakage of exhaust gases.