THERMOSIPHONIC SOLAR WATER HEATERS / TECHNICAL DOCUMENTATION / JANUARY 2021 PAGE
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STEP 7
Assuming the tank is filled with water and the closed circuit is filled with solution you may remove the
cover sheet from the collector at this point. If it is a sunny day the solution will start overflowing from
the safety valve outlet at the top of the tank as it heats up. If there is no overflow check that:
1. The closed circuit is filled.
2. There is no air in the closed circuit.
3. There are no leaks in the closed circuit connections.
Take the appropriate action until there is overflow.
STEP 8
Connect the domestic hot water tube. Turn on the domestic cold water supply and check for leaks. The
domestic water pressure should cause the closed circuit solution to overflow from the safety valve
outlet at the top of the tank. If there is no overflow perform the diagnostic tests of Step 7.
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