TM081 Rheem 834 Series Hydroelectric CFGWH Service Instructions
REV: AA Issued: 22/02/17
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed uncontrolled.
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8. Remove two Phillips head screws retaining gas valve to gas inlet fitting (screws are
accessed via holes underneath heater).
9. Push burner manifold up slightly and slide out gas valve. Do not lose silicon gasket
between gas valve/ burner manifold connection and do not lose o'ring between gas
inlet / gas valve connection.
10. Reassemble in reverse order of above ensuring gas valve o'ring and gasket are clean
and free from cracks.
Notes:
When reconnecting ignition module leads, ensure top
ignition module lead connects to ignition rod and bottom ignition module lead connects
to flame rod. Take care not to cross thread large hex head nut at the burner manifold
to gas valve connection.
11. Start heater and check for gas leaks at all gas train connections using a soapy water
solution.
12. Check and adjust burner gas pressure (refer to 'Checking & Adjusting Burner Gas
Pressure' on page 47).
Gas Inlet Assembly (Procedure 14)
The gas inlet assembly is part of the gas valve and is not available as a spare part. If the
gas inlet assembly is faulty the entire gas valve assembly will need to be replaced.
1. Remove gas valve by performing steps 1 ~ 9 of procedure 13.
2. Disconnect pipe work from gas inlet connection.
3. Remove two Phillips head screws retaining gas inlet assembly to heater base and
withdraw gas inlet assembly out from heater.
4. Reassemble in reverse order of above ensuring gas valve o'ring and gasket are clean
and free from cracks.
Notes:
When reconnecting ignition module leads, ensure top
ignition module lead connects to ignition rod and bottom ignition module lead connects
to flame rod. Take care not to cross thread large hex head nut at the burner manifold
to gas valve connection.
5. Start heater and check for gas leaks at all gas train connections using a soapy water
solution.
6. Check and adjust burner gas pressure (refer to 'Checking & Adjusting Burner Gas
Pressure' on page 47).
Cold Water Inlet Drain Plug & Inlet Strainer (Procedure 15)
1.
Isolate water supply to heater by closing cold water inlet isolation valve located
below heater.
2. Relieve system pressure by opening and then closing a hot tap.
3. Unscrew drain plug from cold water inlet assembly.
4. To remove cold water inlet strainer, withdraw strainer from drain plug orifice using a
pair of long nose pliers (pay attention to strainer orientation for later reassembly).
5. Reassemble in reverse order of above ensuring drain plug o'ring is clean, free from
cracks and lubricated with silicone grease if dry.
6. Start heater and check for water leaks.
