Owner’s Manual – Solar Water Heaters
H3165 029664 Rev. B
Important Safety Information
Relief Valve:
The Pressure & Temperature Relief (PTR)
Valve must be installed directly into the
RP½”(DN15) socket marked “RELIEF
VALVE”.
The PTR Valve rating is 1,000 kPa and is
also shown on the compliance plate.
The valve must not be tampered with or
removed. The water heater must not be
operated unless this valve is fitted and in
working order.
The PTR Valve should be checked by
a licensed tradesperson for adequate
performance, or replaced at intervals not
exceeding five years, or less in areas where
local regulations apply.
The PTR Valve is to be operated regularly to
remove lime deposits and to verify it is not
blocked.
DANGER – FAILURE TO OPERATE
THE PTR VALVE EASING LEVER AT
LEAST ONCE EVERY SIX MONTHS
MAY RESULT IN THE WATER HEATER
EXPLODING.
Continuous leakage of water from the PTR
Valve may indicate a problem with the water
heater. This may be caused by excessive
water supply pressure, a faulty PTR Valve or
a faulty thermostat.Turn off the water heater
and contact Dux After Sales and Service.
Relief Valve Discharge Pipe:
The discharge pipe connected to the PTR
Valve is to be installed in a continuously
downward direction and in a frost-free
environment.
It is normal for water to drip from the
discharge pipe of the PTR Valve during
heating cycles. The discharge pipe must be
left open to be atmosphere.
Permanent Water Connection:
The water heater is intended to be
permanently connected to the water supply
main, and not connected by a hose-set.
Water Supply Pressure:
This water heater is designed for direct
connection to water supply pressures of up
to
800 kPa
.
Where the mains pressure can exceed or
fluctuate beyond this pressure, a pressure
reducing valve must be fitted in the cold
water inlet supply.
Temperature Protection:
Water heaters can produce very hot water.
To reduce the risk of scald injury, it is
mandatory that an approved temperature
control device (such as a tempering valve)
is fitted to the hot water supply to outlets
used primarily for the purposes of personal
hygiene. This device should be checked at
regular intervals to ensure its operation and
settings remain correct.
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