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ABOUT YOUR WATER HEATER
7
SINGLE ELEMENT MODEL
This type of water heater has one heating unit with its
own thermostat, located at the base of the water heater.
The heating unit can be connected to an Off-Peak
(overnight) or time controlled supply, Extended Off-Peak
(overnight and day) or Extended time controlled supply,
or a Continuous / Domestic electricity supply. The
thermostat is factory set to 65°C and is tradesperson
adjustable from 60°C to 75°C (80°C for 050 models).
Continuous electricity supply
This type of connection is suited to where the storage
capacity is less than the normal daily usage.
Off-Peak electricity supply
This type of connection will only allow heating to occur
during set hours. A volume of water sufficient for the
day’s total use is heated and stored. This type of
heating will be more economical due to reduced tariffs
by the electricity authority.
TWIN ELEMENT MODEL
This type of water heater has two heating units, each with its own thermostat.
One heating unit is at the base of the water heater and the other near the top.
The lower thermostat is factory set to 70°C and is tradesperson adjustable from
60°C to 75°C. The top thermostat has a fixed setting of 60°C.
Bottom heating unit
During normal operation this heating unit supplies all
the hot water.
Top heating unit (Booster)
This heating unit only operates during periods of high
demand to provide an additional supply of heated
water.
Electrical connection
The two heating units are wired for non-simultaneous
operation, so that only one heating unit can operate
at a time. The bottom heating unit is usually
connected to an Off-Peak (overnight) or time
controlled supply and the top heating unit to a
Continuous / Domestic electricity supply. Some
electricity suppliers allow both heating units to be
metered at the Off-Peak or controlled tariff.
NOTE: Power must be available to the top heating unit circuit at all times
for this water heater to operate as designed.
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