Rheem GAS BOOSTED SOLAR WATER HEATER - Manual (Page 45)

COMMISSIONING
45
Pressure Testing the Solar Circuit
20. Close the heat exchanger drain valve.
21. Refit the solar circuit relief valve, orientating the valve
outlet to the rear of the solar storage tank. Secure
with the spring clip. Reconnect the drain pipe to the
valve.
22. Switch on the electrical supply at the power outlet to
the solar storage tank.
The pump will activate and commence pumping fluid around the solar circuit.
Note: The level of the closed circuit fluid in the clear hose will not change, as the heat exchanger
drain valve has been closed.
Allow the pump to operate for three (3) minutes (one and two collector systems) or for five (5)
minutes (3 collector system) to allow the solar circuit to stabilise and fill with closed circuit fluid.
Note: The solar pump will operate for one hour with the hot sensor lead disconnected, before
automatically turning itself off. Refer to
step 24.
23. Check the solar pipe work and collector unions for leaks whilst the pump is operating and the solar
circuit is at its working pressure. It is important to check all of the solar circuit pipe work, including in
the roof space and on the roof.
24. If the procedure to check the solar pipe work for leaks 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 22.
25. Switch off the electrical supply at the power outlet to the solar storage tank.
The pump will deactivate.
The closed circuit fluid will drain back down to the heat exchanger.
26. Rectify any leaks in the solar pipe work and collector unions.
If brazing is required to fix any leaks, then it is necessary to remove the solar circuit relief valve
(refer to step 5 ) .
Warning: The solar circuit may be under pressure. Take care when removing the solar circuit
relief valve, as a sudden discharge of pressurised hot air may be experienced. This discharge will
create a sharp sound of air being released.
27. If minor leaks have been rectified, recommence this procedure from step 22. If a major leak has
been rectified, recommence this procedure from step 5.
heat
exchanger
drain valve
closed