Removal Of Gas Control; Removal Of Heat Exchanger - Rinnai REU-2018W Service Manual

11) Removal of Gas Control

CAUTION
- 240 volt potential exposure. Isolate the
appliance and reconfirm with a neon
screwdriver or multimeter.
a. Remove the manifold (5 screws), refer
section 8a,b,c.
b. Remove the four (4) screws that hold
the gas connection and gas control in
place. Remove the gas connection.
Handle O-ring carefully. (phillips driver)
c. Remove one (1) screw that holds the
gas control in place, disconnect
connectors, pull out the gas control.
Infinity REU-2425W

12) Removal of Heat Exchanger

- 240 volt potential exposure. Isolate the
appliance and reconfirm with a neon
screwdriver or multimeter.
- Isolate Water Supply.
- Drain All Water
a. Remove PCB unit; refer to section 2-a.
b. Remove the heat exchanger water.
connection pipe; refer to section 3-a.
c. Remove one (1) screw from the
outlet connection clip, to pull out the
hot water supply connection pipe
towards yourself. (Handle O-ring
carefully)
d. Remove the three (3) screws
securing the manifold to the gas
control.
e. Remove four (4) screws that secure
the heat exchanger unit in place.
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CAUTION
Issue 2 - 5/07/04 ©Rinnai