Rheem GAS BOOSTED SOLAR WATER HEATER - Manual (Page 40)

COMMISSIONING
40
10. Check the closed circuit fluid is circulating around the solar circuit.
To check circulation:
ƒ Listen for the trickling sound of the closed circuit fluid returning into the heat exchanger by
placing your ear against the side toward the top of the solar storage tank.
If the fluid is circulating around the solar circuit, a trickling sound will be heard as the fluid
returns back into the heat exchanger.
If no trickling sound is heard, check:
¾ the hot sensor lead is disconnected at the solar storage tank.
If connected, disconnect the hot sensor lead at the solar storage tank (refer to step 8 ) .
¾ the isolation valve in the pipe work between the outlet of the heat exchanger and the solar
pump, located behind the lower front cover of the solar storage tank, is fully open.
Warning: Switch off the electrical supply at the power outlet to the solar storage tank
before entering the area inside the solar storage tank behind the front cover.
If closed, open the isolation valve on the outlet of the heat exchanger (refer to step 3 ) .
¾ there is no leakage from the solar circuit. It is important to check all of the solar circuit pipe
work, including in the roof space and on the roof.
If leaking, rectify any leaks in the solar circuit.
¾ the height from the base of the storage tank to the top of the collectors has not exceeded
the maximum allowable height.
¾ the length of solar cold and solar hot pipe has not exceeded the maximum recommended
pipe length.
If the maximum allowable height or the maximum recommended pipe length has been
exceeded, it may be necessary to relocate the solar collectors to either a lower level or
closer to the solar storage tank, or install a second solar pump, or relocate the solar
storage tank closer to the solar collectors. Refer to
“Pipe Lengths” on page 27.
11. Mark the dynamic level of the closed circuit fluid in the
hose on the side of the solar storage tank with a non
permanent marker when satisfied the solar circuit
circulation is operating satisfactorily.
12. If the procedure to check the solar circuit circulation is
not complete before the pump has automatically
turned off, then:
ƒ switch off the electrical supply at the power outlet to the solar storage tank.
ƒ wait ten (10) minutes for the operating system to reset to its commissioning sequence,
otherwise the pump will not operate when the power supply is switched on.
ƒ recommence this procedure from step 9.
mark dynamic
level on tank