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How your hot water system works
Your hot water system contains two main components – a
heat pump and a hot water storage tank:
Heat Pump
The heat pump is the primary heating device and employs
the same heating technology as a refrigeration style air
conditioner. The heating operation works by taking heat
energy from the surrounding air and then transferring the
heat energy into water circulating from the hot water storage
tank. Since this energy is not created but simply moved and
concentrated from one location to another, it is a very efficient
and cost effective when compared to a common electric hot
water service.
Hot Water Storage Tank
The hot water storage tank is where the hot water is stored
and kept available for use throughout the day. It comprises
of an enamel coated steel preservation tank, surrounded by
a thick layer of thermal insulation and protected by an outer
metal casing. A sacrificial anode is installed inside the tank
to protect it from corrosion as well as an electric element,
controlled by a thermostat, which can be used as an auxiliary
heating device. Depending on the installation your storage
tank will have the storage capacity of either 270, 340 or 425
litres.
Operating modes
The hot water system has two operating modes, automatic
mode and electric heating manual mode:
1. Automatic mode: This is the default operating mode.
The heat pump starts up and shuts down according to
the water temperature inside the storage tank. When
the temperature inside the tank drops below the restart
temperature setpoint, the heat pump will start up
automatically. When the temperature inside the tank
reaches the required temperature setpoint, the heat
pump will stop automatically.
2. Electric heating manual mode: When the auxiliary heating
boost button is pressed, the heat pump operation will
change to the electric heating manual mode. During this
mode the heat pump will not operate, instead outputting
power to a heating element inside the storage tank. This
heating element will maintain the water temperature
inside the tank according to the thermostat setting
(factory pre-set to 60°C). The electric heating manual
mode will operate for up to a one day period before
the heat pump automatically reverts back to its normal
automatic mode (no resetting required). This mode can
be useful when wanting to quickly boost the temperature
of the water inside the tank or in the unlikely event that
the heat pump requires a service call, ensuring hot water
will always be available when required.
Note: electric heating manual mode can only be activated by
manually pressing the boost button on the heat pump. the
heat pump will never automatically change over to this mode,
even if a fault situation occurs. In this way you will always be
aware and able to identify when something has happened
to the heat pump that requires attention and there will be no
unpleasant surprises on the next electricity bill.
6 how your hot water system works Kelvinator heat pump hot water system
Using your hot water system
The auxiliary heating boost button is located on the side of
the heat pump near the inlet and outlet water connections.
auxiliary
heating
boost
button
To activate the electric heating manual mode:
•
Twist clockwise to release the button (if already in pushed
in position), wait a few seconds then push the button until
it clicks into place.
•
The fan may start up if needed to keep the heat pump
circuitry and electronics cool
•
After a couple of seconds a "click" sound may be heard
inside the heat pump and the storage tank element
circuit will be activated.
•
The storage tank element circuit will stay activated for
up to a 1 day period, after which the heat pump will
deactivate the element circuit and revert back to its
normal operating mode (even when the button
remains depressed).
Continuous or off-peak power supply
The heat pump may be installed on a continuous only power
supply, or with an extended off-peak supply to power the
compressor circuit and continuous supply to power the
electronics and tank element. If the heat pump is installed on
a continuous only power supply, the compressor will operate
at any time of the day as required. If the heat pump is installed
on extended off-peak power supply, the compressor will
operate as required only when the extended off-peak power
supply is available.
The heat pump is designed to operate on extended off peak
(or off peak 2) which provides power for approximately 18
hours per day. If the premesis only has standard night rate off
peak (or off peak 1) which provides power for approximately
8 hours per day, then there is a possibility that the customer
may not have sufficient hot water in the late afternoon,
and the automatic weekly sanitisation function may not
always work in accordance to Australian Standard AS3498
for Legionella control. Failure to follow this requirement
is considered an installation error, and hence resulting
complaints may not be covered under warranty. Please
contact your electricity supplier to confirm or change to
extended off peak power supply as required.
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