Installation and Owner’s Manual – Airoheat Heat Pump
16
H4120 025941 Rev. B
has been increased to 60°C or slightly
above. To condition the unit properly
allow the heat pump to go through one
heat up cycle, before use, then wait 24
hours before using the hot water.
Water Quality
Your water heater has been manufactured
to suit all water conditions in “All Water
Areas” present in Australia. Please note
that harsh water supplies can have a
detrimental effect on a water heater
and its life expectancy. If you are unsure
about your water quality, you can obtain
information from your local water supply
authority.
Water can also contain material known
to create lime scale where lime scale
can build up and block safety fittings.
One measure of this water quality is
known as the saturation index. If the
saturation index is greater than 0.40 and
therefore subject to lime scale, a cold
water expansion control valve should
be fitted to the unit, as shown in the
diagram on page 6.
How Long Will The Heat Pump Run
Each Day?
The length of time that the unit will run
each day will vary dependent upon the
amount of hot water being used by the
household and the average outdoor
ambient temperature and humidity.
Generally the unit will run longer in
winter and at night when the outside air
temperature contains less energy.
What Is Subzero
(De-icing Function)?
Depending on the level of humidity, ice
may begin to form at around 5°C on the
evaporator coil, which has the potential
to affect the system’s performance.
The system’s Hotlogic controller
determines if conditions conducive to
icing exist, and triggers the de-icing
cycle as a result.
The de-icing cycle interrupts the flow
of heated refrigerant, shuts down the
compressor, and runs the fan in reverse,
drawing air through the evaporator coil
and past the louvres. It is this airflow
which de-ices the evaporator coil. Once
de-icing has occurred, the system
allows the heated refrigerant to flow, and
heating recommences.
Does The Heat Pump Need Sun-
light To Operate?
Heat pump water heaters extract their
energy from the surrounding air and
not from sunlight. For this reason they
can efficiently produce hot water any
time day or night and even on cloudy or
overcast days. It is not uncommon for
your system to operate during the night.
Caution: All water heaters have
the ability to produce hot water
in a surprisingly short time.
To reduce the risk of scald
injury, it is mandatory under
the requirements of Australian
Standards AS3500 that an
Owner’s Manual
