Water Quality - Rinnai RIN250EHP Installation And Owner's Manual

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 <?>.
H4123 025961
Owner's Manual
Rev. A July 2012
Installation and Owner's Manual – Heat Pump
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)?
During colder temperatures (below 0°C),
and dependant on the level of humidity,
ice can begin to form on the evaporator
coil, which has the potential to affect the
system's performance.
Operating through the patented Hotlogic
controller, the system instinctively
determines when conditions conducive
to icing exist. At this time the de-icing
process commences, removing ice from
the evaporator and allowing the unit to
continue to heat water.
The de-icing cycle interrupts the flow of
heated refrigerant, whilst still allowing
the fan to run, continuing to draw air
through the louvres. It is this airflow
which de-ices the evaporator. Once
de-icing has occurred the system allows
the refrigerant to flow, and heating
continues.
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