INSTALLATION INSTRUCTIONS - ALL MODELS
23
Booster Control
The isolating switch(s) installed at the switchboard and adjacent to the solar storage tank (if installed) should be left
switched on.
Leaving the isolating switch(s) switched on will also provide a sufficient period of time each day for the booster heating
unit to operate, if required, to satisfy the requirements of AS 3498.
Timer Control Switch
A suitably rated timer control switch can be installed and will help maximise energy savings with an electrically boosted
solar water heater connected to a continuous, time of use or extended Off-Peak (overnight and day) electricity supply.
If used with an extended Off-Peak (overnight and day) electricity supply, the timer switch should:
•
Be operated by a continuous power supply on its own circuit from the switchboard with the booster heating unit
operated by the Off-Peak power supply.
A double pole isolating switch is required to be installed at the switchboard to simultaneously isolate both circuits.
Or
•
Be of a type which has an internal rechargeable battery to keep time when the power supply is not available to the
timer.
on page 13.
Timer Control Switch Wiring Diagram
Timer With Contactor (if required)
Timing Wiring Diagrams Electric Boosted Solar Water Heater
Continuous
Power Supply
Switchboard
Extended Off-Peak
Power Supply
Switchboard
Timer
Terminal Block
Timer Without Contactor
Timer
Terminal Block
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