COMMISSIONING
38
6. Disconnect the drain line from the solar circuit relief
valve at the top of the solar storage tank. Remove the
spring clip from the solar circuit relief valve and
remove the valve.
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.
7. Open the heat exchanger drain valve and remove the
plug from the end of the hose.
The closed circuit fluid will flood the hose to the static
level of the closed circuit fluid inside of the heat
exchanger.
8. Mark the static level of the closed circuit fluid on the
side of the solar storage tank with a non permanent
marker.
Solar Circuit Circulation
9. Disconnect the hot sensor lead from the connecting
plug located on the tab in the upper front cover
opening.
It is important, at the end of this procedure when the
commissioning and checking of the solar circuit is
complete, to reconnect the hot sensor lead, otherwise
when the electrical supply is switched on, the solar
pump will deactivate after one hour and the solar
control unit will then enter a fault mode and no solar
gain will be achieved.
10. Switch on the electrical supply at the power outlet to the solar storage tank.
Warning:
Take care not to enter the area inside the solar storage tank behind the front 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 closed circuit fluid around the solar circuit.
The level of the closed circuit fluid in the clear hose will slowly drop to the dynamic operating level.
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 fill with closed circuit fluid and stabilise.
Note:
The solar pump will operate for one hour with the hot sensor lead disconnected, before
automatically turning itself off
(refer to step
13
)
.
disconnect hot
sensor lead
disconnect
drain line
and remove
solar circuit
relief valve
heat
exchanger
drain valve
open
