Table of Contents
Advertisement
INSTALLATION – SOLAR COLLECTORS
•
The solar hot and solar cold pipe work between the solar Hiline storage tank and the solar collectors
are supplied in the pipe kit. The supplied copper solar hot and solar cold pipes MUST BE used.
•
If the solar water heater is installed either on a metal roof or in a trafficable area, such as on an
accessible roof, then the solar hot and solar cold pipes must be insulated. The solar hot and solar cold
pipes may be required to be insulated to comply with local regulations.
If insulation is required, the full length of the solar hot and solar cold pipes MUST BE insulated.
The insulation must:
be of a closed cell type or equivalent, suitable for a solar water heating application and capable
◼
of withstanding the temperature of the water generated by the solar collectors under stagnation
conditions
The specification of the chosen insulation material should be checked with the insulation
manufacturer prior to installation as different materials may vary in temperature tolerance.
be at least 13 mm thick
◼
be weatherproof and UV resistant
◼
be fitted up to and cover the connections on both the solar storage tank and the solar collectors.
◼
The insulation will offer protection to a metal roof against corrosion due to water running off the copper
pipes, assist in avoiding accidental contact with the solar pipe work as very high temperature water
can flow from the solar collectors to the solar storage tank, and also reduce pipe heat losses.
•
Plastic pipe MUST NOT be used, as it will not withstand the temperature and pressure of the water
generated by the solar collectors under stagnation conditions. Extremely high water temperatures and
extremely high water pressures can be generated under these conditions. Plastic pipe cannot
withstand these temperatures and pressures and MUST NOT be used. Failure of plastic pipe can lead
to the release of high temperature water and cause severe water damage and flooding.
•
There MUST BE a continuous fall of a minimum 10° in the pipe work from the solar Hiline storage
tank to the solar collectors. The highest point of the solar cold pipe and solar hot pipe must be where
they connect to the solar Hiline storage tank, otherwise thermosiphoning will not occur.
•
A non-return valve MUST BE installed on the cold water line to the solar storage tank AFTER the cold
water branch to a temperature limiting device.
•
The solar water heater, including the collector circuit, is to be isolated during the testing and
commissioning of the heated water reticulation system in a building in accordance with Clause 9.3 (a)
of AS/NZS 3500.4:2018. The collector circuit includes the solar hot and solar cold pipes and solar
collectors.
WARNING: Plumber – Be Aware
34
Advertisement
Table of Contents
