Rheem Solar Hiline 52D Series Owner's Manual And Installation Instructions page 57

Draining and Flushing the Solar Collectors
•
From the bottom end of the solar collectors, unscrew and remove the end plug.
Connect a hose to the collector connection. Let the other end of the hose go to a drain.
•
From the top end of the solar collectors, unscrew and remove the end plug.
This will let air into the collector and allow the water to drain through the hose.
•
If flushing the solar collector:
Connect a hose to the top collector connection. Let the other end of the hose go to a drain.
◼
Open the cold water isolation valve to the water heater.
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Allow water to flow from the solar collectors until it is clear of any sediment.
◼
When satisfied the solar collectors are flushed, close the cold water isolation valve to the water heater.
◼
•
When satisfied the solar collectors are drained or flushed, remove the hose(s) and reconnect the end
plug(s).
FILL AND TURN ON THE WATER HEATER
After the solar storage tank and solar collectors have been drained or flushed:
•
Fill and turn on the water heater. Refer to
•
Remove the covering from the solar collectors.
DRAINING AND FLUSHING THE WATER HEATER
"To Fill And Turn On The Water Heater"
57
on page 54.