Rinnai REU-V1620WG Service Manual page 45

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9) Removal of Gas Control
a. Remove manifold (refer item 8)
b. Remove front panel (4 screws). (refer item 1).
c. Remove four (4) screws on gas connection inlet and
gas control (assy), and pull out the gas connection.
Handle O-ring carefully.
10) Removal of Heat Exchanger
a. Remove PCB (refer item 2)
b. Remove Heat Exchanger inlet water tube
(refer item 3)
c. Remove outlet water tube (refer item 6).
d. Remove three (3) screws from the manifold (refer
item 8).
e. Pull off high tension lead and flame rod terminal
(refer item 4).
f. Remove connectors of OHS, Sparker, Anti Frost
heater and fan motor.
g. Remove four (4) screws from heat exchanger.
Infinity REU-V1616W / REU-V1620W / REU-V2018W / REU-V2020W- 40 -
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h. Pull off Heat Exchanger
11) Removal of Thermal Fuse
a. Pull off heat exchanger (refer item 10).
b. Remove thermal fuse .
Issue 2 - 21/03/06 ©Rinnai