Installation and Owner’s Manual – Airoheat Heat Pump
6
H4120 025941 Rev. D
Water Supply:
This water heater has been
manufactured to suit the water
conditions of most Australian
metropolitan supplies.
Please note certain water supplies can
have a detrimental effect on the water
heater and its life expectancy. If you are
unsure about the water supply you can
obtain information from the local water
supply authority.
The water heater is designed for use in
areas where the Total Dissolved Solids
(TDS) content of the water supply is
less than 2500 mg/L. The Tank Failure
Warranty does not apply in areas where
the TDS exceeds 2500 mg/L.
In areas where the TDS exceeds
600 mg/L, it is possible the magnesium
alloy anodes (supplied in a standard
heat pump water heater) may become
over-reactive. To alleviate this, the
magnesium alloy anodes should be
replaced with aluminium alloy anodes.
Aluminium alloy anodes are available
from your local Dux Supplier.
Water can also be very corrosive, the
measure of this is the saturation index.
If the water saturation index is greater
than 0.40, an expansion control valve
should be fitted. Please consult Dux
After Sales and Service for advice if
required.
Plumbing Connections
Note: a combined isolating valve/non-return valve/line strainer may be used.
The expansion control valve is only required where local regulations demand,
although it is recommended in areas where the water saturation index is greater
than 0.40.
Cold Water Connection Diagram:
