Component Replacement Procedures - Rheem Premier Loline TM024 Service Instructions Manual

Component Replacement Procedures

Draining the Water Heater (Procedure 1)
Elevated temperatures may be present during the draining process. Wear
Personal Protective Equipment to prevent scalds or burns.
Wear Personal Protective Equipment when conducting step 3 of this
procedure to reduce the risk of electric shock. Refer to Rheem Safety
Procedure on electrical testing.
1. Isolate power and water supplies to the water heater.
2. Relieve pressure from the water heater through the T&PR valve or a hot tap.
3. Remove the upper electrical access cover (refer to procedure 5) and confirm with a
multi-meter between the Active and Neutral, then Active and Earth, then Neutral
and Earth terminals of the terminal block that voltage is not present.
4. Disconnect the cold water supply pipe.
5. Fit a drain hose to the cold-water connection and run the other end to a drain or safe
location.
6. Open the temperature and pressure relief valve to allow air into the system.
Solar Circuit Relief Valve (Procedure 2)
Elevated temperatures may be present during this procedure. Wear Personal
Protective Equipment to prevent scalds or burns.
Wear Personal Protective Equipment when conducting step 2 of this
procedure to reduce the risk of electric shock. Refer to Rheem Safety
Procedure on electrical testing.
Under no circumstances should solar circuit work be performed whilst the
solar circuit is hot. It is recommended to conduct any solar circuit procedures
in the early morning before maximum solar gain is achieved. Work should
also be performed with the solar collectors covered.
It is dangerous to open any part of the closed solar circuit when the system is
hot. A serious and significant burn and scald hazard exists. The following
procedure is only to be performed when the system is cold.
1. Isolate power supply to the water heater and remove upper electrical access cover
(refer to procedure 5).
2. Confirm with a multi-meter between Active and Neutral, then Active and Earth,
then Neutral and Earth terminals of the terminal block that voltage is not
present.
3. Open a hot tap and draw off all hot water from the tank. This will help cool the solar
circuit fluid in the heat exchanger.
4. If the pump has been operating allow five minutes for closed circuit fluid to drain back
to heat exchanger.
5. Disconnect the drain line from the solar circuit relief valve.
6. Remove the spring clip from the solar circuit relief valve and remove the valve by lifting
upwards.
A quantity of hot vapour may discharge from the tank during this process.
Wear Personal Protective Equipment to prevent scalds or burns and do not
lean over relief valve.
7. Complete reassembly in reverse order of above.
TM024 Premier Loline Solar Drain back Service Instructions REV: A
D.O.I: 12/12/2007
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