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FROST PROTECTION MODE
Information on pumped frost protection is provided in the separate controller manual�
VALVES AND FITTINGS
The following valves and fittings are supplied with your solar hot water system:
•
A combined pressure and temperature (PTR) relief valve, capacity 10 kW� Relief valve pressure settings
vary with models. This valve is fitted at the top of the storage cylinder. The PTR valve is a safety device and
it is mandatory that it is fitted by the installer in all installations.
•
A non return valve fitted on the solar pump outlet to prevent backflow through the pump from the solar
collectors� This valve is factory connected�
•
Air bleed valve to assist in eliminating air from the system during commissioning�
•
Fittings as shown on pages 26 to 35�
The following valves & fittings are to be supplied by the installer:
•
A cold water expansion control valve (ECV). An ECV must be fitted in Western Australia and South Australia
to the cold water supply to the storage cylinder to comply with local regulations� An ECV is recommended in
all other geographical areas where the water supply has a tendency to cause scaling� This will reduce hot
water discharge from the pressure and temperature relief (PTR) valve which minimises wear on this valve�
•
A stop cock, non return valve and line strainer� Combination valves incorporating two or more of these
functions (such as 'Trio' valves) are suitable. These are fitted to the cold water supply to the storage cylinder
by the installer�
•
Cold water supply and hot water discharge pipework to and from the storage cylinder�
•
Solar collector flow and return pipes and storage cylinder connections.
•
An isolating valve and connection union for the gas supply to the gas booster�
•
An approved pressure limiting valve (supplied with some systems) is required if the maximum rated water
supply pressure on page 12 is exceeded�
•
Tempering valve(s) or thermostatic mixing valve
The diagrams on the following page show two variations of how the plumbing may be set out� All installations must
comply with the requirements of AS/NZS 3500.
Rinnai
21
INSTALLATION
Split Solar OIM
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