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HOW YOUR WATER HEATER WORKS
12
MANUAL CONTROLS
An isolating switch is installed in your electrical meter box for your solar water
heater. Rheem recommends as an optional extra a second switch, called the
Booster Switch, be installed in a convenient location such as the kitchen or laundry.
This switch should be a normal on/off manually operated switch (recommended for
Off-Peak electricity supplies to single element models and the bottom element on
twin element models) or the Rheem “One Shot Control” switch (recommended for
continuous electricity supplies to single element models only).
The amount of water heated by the booster heating unit depends on the model of
water heater installed. The boosted volumes of hot water are:
Model 250 L 315 L 400 L
Lower Heating Unit (all models) 250 litres 315 litres 400 litres
Top Heating Unit (twin element models) 50 litres 50 litres 90 litres
MANUAL ON/OFF SWITCH
(a) Continuous Tariff Connection
Operate the booster switch to activate the
auxiliary booster heating unit when the hot
water falls below an acceptable temperature.
It is important to ensure the booster switch is
turned OFF after you have satisfied your hot
water needs. Do not leave the booster switch
ON in sunlight hours because your solar
savings will be reduced.
(b) Extended Off-Peak Tariff Connection
Operation is very similar to that suggested for
continuous tariff, but it is important to be
aware of the hours during which electricity is
available so boosting, if required, can be
adapted to suit. (Check with your local
Electricity Supply Authority for hours of
operation). Do not leave the booster switch on
during daylight hours unless boosting is
required, as solar savings will be reduced.
(c) Off-Peak (night rate) Tariff Connection
Most systems will be connected to an Off-Peak supply of electricity. Boosting will
only occur overnight (usually between 11:00 PM and 6:00 AM). In the winter
months many households will find it necessary to leave the booster switch ON.
However, in some cases it may only be necessary to switch the booster switch ON
every second night. This can be determined over a trial period.