LAARS U.H.E. - Service Manual - Manual (Page 24)

LAARS Heating Systems Page 24
Gas Valve Replacement Procedure
Step 6. Remove the 2 gas valve mounting screws (Torx bit) located at the
11:00 O-clock & 5:00 O-clock position on the venturi mounting flange
and remove gas valve from water heater.
Step 7. Remove any residual gasket material from blower and venturi mounting flange.
Step 8. Install new gas valve with new gasket provided. Secure gas valve in place using
screws from step 6.
Step 1. Position main power switch to “OFF”.
Step 2. Disconnect (unplug) water heater from
120 volt power source.
Step 3. Turn off gas supply to water heater.
Step 4. Un-latch & remove surround cover from top of
heater.
Step 5. From the gas valve, disconnect
the gas connection, PVC venting,
wire harness and silicone tubing.
Step 9. Reconnect PVC venting, gas supply, silicone tubing & wire harness to gas valve. Turn
on gas supply to heater and check for gas leaks, repair any gas leaks found.
Step 10. Restore 120 volt power supply to water heater and confirm proper operation following
the lighting instructions on the lighting instruction label or the lighting instruction located
in the installation and operating instruction manual.
Step 11. Replace surround cover on top of
water heater.
Gas valve
assembly
Blower / gas valve
gasket
Blower
Venturi
mounting flange
Gas valve
mounting screws
(2 places)
Venturi inlet
Gas valve
wire harness
WARNING
120 volt potential exposure. Isolate the
appliance and reconfirm power is
disconnected using a multi-meter.
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