Dux proflo 125X136 Benutzerhandbuch - Seite 7
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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 anode (supplied
in standard water heaters) may become over-
reactive. To alleviate this, a hard water model is
recommended, or the magnesium alloy anode
should be replaced with an aluminium alloy
anode. 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. If
the index is greater than 0.80, the electrical
heating element should be replaced with a low
power density Incoloy heating element. Please
consult Dux After Sales and Service for advice
if required.
Cold Water Connection:
The water heater is intended to be permanently
connected to the water supply main, and not
connected by a hose-set.
An approved isolating valve, non-return valve,
line strainer (optional but recommended) and
union must be fitted between the water supply
main and a RP¾"(DN20) socket marked
"INLET" at the bottom of the water heater. See
the diagram on page 6 for details.
On dual handed models, the unused socket
marked "INLET" is to be plugged with one of
the brass plugs supplied. Ensure that a sealing
material is applied to the brass plug to prevent
water leaks.
H0421
0421
Rev. R
Owner's Manual – Proflo Electric Storage Water Heaters
Plumbing Connections
All fittings must be approved by the relevant
Authority. Plastic pipes or fittings shall not be
used between the isolating valve and the inlet.
Water Supply Pressure:
This water heater is designed for direct
connection to water supply pressures of up to
1,120 kPa for 80L, 125L and 160L models, and
800 kPa for 135L, 180L, 250L, 300L, 315L
and 400L capacities.
Where the mains pressure can exceed or
fluctuate beyond this pressure, a pressure
reducing valve must be fitted in the cold water
inlet supply.
Note for New Zealand, South Australia and
Western Australia:
It is a requirement in these locations that an
expansion control valve be fitted on the cold
water supply line between the non-return valve
and the water heater.
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