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Rinnai Australia
- 15 -
Solar Close Coupled Operating / Installation Manual Issue 7 - 16/9/10
VALVES AND FITTINGS
Components Supplied by Installer
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.
•
An isolating valve and connection union for the gas supply to the gas booster.
•
A approved pressure limiting valve is required if the maximum rated water supply pressure in
Table 2
is exceeded.
Components Supplied with System
The following valves 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.
•
Thermo-Arrestor (TA) valve. This valve is fitted on the inlet pipe to the Solar Collectors.
•
For gas boosted systems, elbow connections for the hot, cold and gas supply are fitted at the
bottom of the gas booster.
•
Fittings as shown in
Figures 24 to 27
.
INSTALLATION INFORMATION