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ABOUT YOUR WATER HEATER
7
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are
shown on pages 23 and 25. The water heater must be installed by an
authorised person and the installation must comply with National Standards AS/NZS 3500.4,
AS/NZS 3000 and all local codes and regulatory authority requirements. In New Zealand, the
installation must conform with the New Zealand Building Code.
PIPE WORK AND INSULATION
The solar hot and solar cold pipe work between the solar storage tank and the solar collectors and
between the solar storage tank and in-series water heater (if one is installed)
MUST BE of copper and
fully insulated with closed cell polymer insulation or similar (minimum thickness 13 mm). The insulation
must be weatherproof and UV resistant if exposed. The insulation is essential to assist in providing
freeze protection, will offer corrosion protection to a metal roof against water runoff over the copper
pipe, assist in avoiding accidental contact with the solar pipe work and also reduce pipe heat losses.
The insulation must be fitted up to the connections on both the solar collectors and the solar storage
tank, as very high temperature water can flow from the solar collectors to the solar storage tank under
certain conditions.
Plastic pipe
MUST NOT be used, as it will not withstand the temperature and pressure of the water
generated by the solar collectors under certain conditions
(refer to Warning on page 27).
DOES THE WATER QUALITY AFFECT THE WATER HEATER?
The water heater is suitable for most public water supplies, however some water qualities may have
detrimental effects on the cylinder, solar collectors and fittings. If you are in a known harsh water
area
you must read page 36. If you are not sure, have your water quality checked against the
conditions
described on page 36.
HOW LONG WILL THE WATER HEATER LAST?
There are a number of factors that will affect the length of service the water heater will provide. These
include the water quality, the water pressure, temperature (inlet and outlet) and the water usage
pattern. However, your Solahart water heater is supported by a comprehensive warranty
(refer to
page 38
).
ANODE PROTECTION
The anode(s) installed in your water heater will slowly dissipate whilst protecting the cylinder. The life of
the water heater cylinder may be extended by arranging for an authorised person to inspect the
anode(s) and replace if required.
The suggested time after installation when the anode(s) should be inspected is 8 years.
For softened water supplies or in areas of poor water quality, it is recommended the anode(s) be
inspected 3 years earlier than shown (refer to
“Water Supplies” on page 36).