Extension Kit Installation
Clearances
exhaust pipe to combustibles | 1 inch (25.4 mm) |
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exhaust pipe to | zero |
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Clamps | Exhaust pipe |
Both the exhaust line and air intake hose are | Exhaust pipe |
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supported by clamps which are attached to the wall. |
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A wall fixture can be used to offset the clamp from the |
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wall. Use Screw B to attach the wall fixture to the |
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wall. If the wall fixture is not used then use Screw A |
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and the nut to attach the clamp to the wall. |
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The air intake hose should always be underneath the |
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exhaust line so that in case the air intake hose sags it |
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will not come into contact with the exhaust line. | Air intake hose |
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| Air intake hose |
Installing the Exhaust Line
The exhaust line is connected between the bent pipe at the rear of the heater and the exhaust port on the flue manifold.
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.
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.
Male end | Female end | Pipe stopper B |
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Pipe stopper A
Adjust the angle
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
24 | Rinnai Corporation ES38 Manual |