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rev. 01/09/21
PLUMBING CONNECTIONS
Piping Materials
EXCLAMATION-CIRCLE
CAUTION
Southern Cross Water Heating Pty Ltd. recommends the use of copper pipe, certified to AS1432 Class C, for use in the inlet
and outlet lines to the heat pump water system.
Plastic piping is not to be used for any portion of the water heater system plumbing unless the pipe manufacturer has rated it
for temperatures up to 99°C and a minimum water pressure of 600kPa at these temperatures.
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Before making the final connections, rinse the inlet pipes in order not to introduce metal or other particles into the tank.
The inlet water temperature is suggested to be between 10 - 30°C.
Outdoor water pipes and valves should be properly insulated.
Pressure Reducing Valve
Where the mains water supply pressure is likely to exceed 550 kPa at any time, a 500kPa pressure reducing valve that complies with AS1357 must be
fitted to the inlet of the hot water system. This is essential to safeguard the appliance and ensure correct operation.
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WARNING
A breach of this requirement may void the warranty in the event of damage caused by excessive pressure.
Pressure & Temperature Relief Valve
Remember this valve can discharge very hot water, so carefully consider its location.
Never discharge onto a solid surface like concrete.
EXCLAMATION-CIRCLE
CAUTION
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1.
Fit the 700 kPa/99°C (10 kW) pressure & temperature relief valve supplied in the parts box into G¾”F tank socket;
2. Ensure that the drain line from the pressure and temperature relief has a continuous downslope and falls away
from the valve and towards the ground level to a safe location, terminating above the ground level. Please ensure
that the drain is installed in a place where it cannot be affected by freezing conditions (per AS3500).
Cold Water Expansion Relief Valve
Fit the 600 kPa pressure relief valve in the cold water supply pipe after the check valve, stop cock and (if required) pressure limiting valve.
Important Safety Information
All water heaters have the ability to produce hot water very quickly. To reduce the risk of scald injury it is recommended that a temperature control
valve be fitted to the hot water supply pipe work. This valve should be checked every 6 months to ensure its operation and settings remain correct.
Check that the pressure and temperature relief valve drain pipe is not located where it can cause damage if hot water is discharged.
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WARNING
This water heater is not intended for use by young children, infirm persons, or persons lacking relevant skill or experience,
without suitable supervision.
Children should be supervised to ensure they do not play with hot water taps or the water heater.
If the hot water system is not used for two weeks or more, a quantity of hydrogen gas, which is highly flammable, may accumulate in the water
heater. To dissipate this gas safely, it is recommended that a hot tap be turned on for several minutes at a sink, basin or bath but not a dishwasher,
clothes washer, or other appliance. During this procedure there must be no smoking, open flame or any other electrical appliance operating nearby.
If hydrogen is discharged through the tap, it will probably make an unusual noise as with air escaping.
Do not place hands or any part of your body
beneath the tap during this procedure.
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