Specifications

COMMISSIONING
49
Commissioning the Solar Circuit
To commission and check the solar circuit:
1. Switch off the electrical supply at the power outlets to the solar storage tank and in-series gas booster.
If the pump has been operating, wait five minutes to allow the drain back of the closed circuit fluid in the
solar circuit.
2. Cover the solar collector with an opaque material to prevent solar gain during the commissioning
process.
3. Remove the screw from the front jacket securing the lower front cover in position and remove the cover
from the solar storage tank.
Attach Closed Circuit Fluid Level Hose
4. Attach the clear hose to the solar circuit.
To attach the hose:
 Ensure the heat exchanger drain valve is closed.
The heat exchanger drain valve is located in the
centre on the underside of the cylinder, behind the
lower front cover of the solar storage tank.
 Attach one end of the hose to the hose tail
connection.
 Plug the free end of the hose.
 Affix the hose securely in a vertical orientation to the
front of the solar storage tank using tape, adjacent
to the text, “MINIMUM FLUID LEVEL WITH PUMP
OPERATING” and ensure there are no kinks in the
hose.
5. 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.
6. 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.
7. Mark the static level of the closed circuit fluid on the side
of the solar storage tank with a non permanent marker.
affix hose
to tank
disconnect
drain line
and remove
solar circuit
relief valve
attach
hose
heat
exchanger
drain valve
open
heat
exchanger
drain valve
closed