Component Replacement Procedures - Water Heater - Rheem 55027500 Service Instructions Manual

Component Replacement Procedures - Water Heater

Draining the Water Heater (Procedure 1)
Elevated temperatures may be present during the draining process.
Personal Protective Equipment should be worn to prevent scalds or burns.
Personal Protective Equipment should be worn when conducting step 3 of
this procedure to reduce the risk of electric shock. Refer to Rheem Safety
Procedure on electrical testing.
1. Isolate the 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 access cover and confirm with a multi-meter between Active and
Neutral at 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.
Temperature and Pressure Relief Valve (Procedure 2)
Never fit a T&PR valve with a rating higher than that indicated on the water
heater rating plate. Do not use reconditioned T&PR valves.
1. Isolate the 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 drain line from the T&PR valve.
4. Unscrew the T&PR valve and remove.
A quantity of hot water will discharge from the tank during this process.
Personal Protective Equipment should be worn to prevent scalds or burns.
5. Confirm the replacement T&PR valve is the correct rating and refit using thread tape.
6. Refit the drain line.
7. Close the hot tap and restore water supply.
8. Check T&PR valve thread for leaks.
9. Operate the T&PR valve lever to reset relief drain.
10. Purge air from the system through hot taps.
11. Restore the power supply to the water heater.
Dip Tube (Procedure 3)
1. Isolate the 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. Disconnect the hot water line from the outlet of the water heater.
A quantity of hot water will discharge from the outlet during this process.
Personal Protective Equipment should be worn to prevent scalds or burns.
4. Using a flat blade screwdriver gently split the outer rim at the top and bottom of the dip
tube face and prise the dip tube out of the cylinder fitting.
5. Fit the replacement dip tube into the cylinder fitting ensuring the flat lines up with the
fitting (dip tube facing up) and gently drive the dip tube into the fitting a short distance.
6. Reconnect the plumbing; this will push the dip tube into the correct location.
7. Restore the water supply and purge air from the system through hot taps.
8. Restore the power supply.
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
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