Specifications

TM024 Premier Loline Solar Drain back Service Instructions REV: A
D.O.I: 12/12/2007
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65
Pressure Testing the Solar Circuit
21. Close the heat exchanger drain valve.
22. 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.
23. Switch on the electrical supply at the isolating switch to the
solar storage tank.
Warning: Take care not to enter the area inside the solar storage tank behind
the access covers whilst the power is on as the electrical circuit will be live.
The red LED on the solar monitor label will start flashing.
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 25.
24. 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.
25. If the procedure to check the solar pipe work for leaks is not complete before the pump
has automatically turned off, then:
• Switch off the electrical supply at the isolating switch to the solar storage tank.
• Wait one (1) minute for the operating system to reset to its commissioning
sequence, otherwise the pump may not operate when the power supply is
switched on.
• Recommence this procedure from step 23.
26. Switch off the electrical supply at the isolating switch to the solar storage tank.
The red LED on the solar monitor label will stop flashing.
The pump will deactivate.
The closed circuit fluid will drain back down to the heat exchanger.
27. 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 6).
Warning: The solar circuit may be under pressure. Take care when removing
the solar circuit relief valve, as a sudden discharge of pressurised hot
vapour may be experienced. This discharge will create a sharp sound of
vapour being released.
28. If minor leaks have been rectified, recommence this procedure from step 23. If a major
leak has been rectified, recommence this procedure from step 6.