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THERMOSTAT SETTING
The thermostat controlling the electricity supply to the booster heating unit is adjustable from 60°C to 70°C.
The factory setting of the thermostat is 60°C. The thermostat is adjusted by turning the adjuster anticlockwise
to decrease the temperature setting and clockwise to increase the temperature setting. Only adjust the
temperature setting when the isolating switch is switched off at the switchboard.
For reasons of safety and economy, we advise the thermostat be set at the lowest temperature that will provide
sufficient hot water during periods when boosting is required. It is recommended the thermostat is set at 60°C
to maximise solar contribution. Discuss the thermostat setting requirements with the householder.
SOLAR CONTROL UNIT
The solar control unit, supplied with a 1.8 metre power cord, requires a switched 220 V - 240 V a.c. 50 Hz
general purpose outlet (GPO) to be located within 1.2 metres of the installation. The GPO must have a
continuous power supply originating from a circuit other than the water heater circuit. The GPO is required to
be weatherproof if installed outdoors.
The GPO to the solar control unit must be switched on for the solar control system to operate and solar gain
to be achieved. This includes for the circulating freeze protection system to operate.
The solar control unit automatically controls the flow rate through the collector circuit. This is achieved via the
hot and cold sensors and differential controller programming providing control over the operation of the
circulator. There is no provision for nor is adjustment to the solar control unit required.
WIRING DIAGRAM
– SOLAR STORAGE TANK
Booster Heating Unit
–
Single Element Model
