Owner’s Manual – Solar Water Heaters
12
H3165 029664 Rev. B
General:
All valves and 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
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.
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.
Cold Water Connection:
The required valves must be fitted between
the water supply main and the RP¾”(DN20)
socket marked “INLET” on the left hand side
of the water heater towards the bottom. The
cold water supply valves must be installed in
the following sequence:
• Isolating valve
• Line strainer (optional but recommended)
• Pressure limiting valve (where required)
• Branch to temperature limiting valve
• Non-return valve
• Expansion control valve (where required or
recommended).
Refer to the diagram below for details.
Cold Water Connections
Note: Pressure Limiting Valve required in some locations and recommended
where the water saturation index is above +0.40.
