Kelvinator solar hot water systems
maintaining your system 9
Maintaining your system
Total Dissolved Solids (TDS) and water hardness can also
impact the life of the hot water system, and warranty does
not apply outside the following limits:
• TDS exceeding 600 p.p.m
• Electrical conductivity exceeding 850us/cm
• Total hardness exceeding 200 p.p.m
• Chloride exceeding 250 p.p.m
• Magnesium exceeding 10 p.p.m
• Sodium exceeding 150 p.p.m
• Acidity/Alkalinity must also be within the limits of
pH 6.5 - 8.5
Anode replacement
There is a sacrificial anode installed in the storage tank (two
in the 450L model) designed to protect the vitreous enamel
coated steel tank from corrosion. The anode will slowly
oxidise while protecting the steel tank liner, reducing its
effectiveness in protecting the tank from rusting over time.
The anode must therefore be inspected and replaced (as
required) every 2 to 5 years depending on the supply water
quality, in order to keep the storage tank warranty valid. The
anode inspection and replacement must be conducted by
an authorised service person or plumber and be replaced by
a manufacturer authorised spare part, which can be sourced
from the Electrolux spare parts division (see contact details
in warranty section).
storage tank
sacrificial
anode
warning
If the hot water system is not used for two weeks or
more, a quantity of highly flammable hydrogen gas may
accumulate in the storage tank. To dissipate this gas safely,
it is recommended that a hot tap be turned on for several
minutes or until discharge of gas ceases. Use a sink, basin,
or bath outlet, but not a dishwasher, clothes washer, or
other appliance. During this procedure, there must be no
smoking, open flame, or any electrical appliance operating
nearby. If hydrogen is discharged through the tap, it will
probably make an unusual sound as with air escaping.
11. Turn on the nearest hot water tap to allow air to be
expelled from the system. Once water has begun to flow
freely from the tap for a period of time and all air has
been expelled from the system, close the hot water tap.
12. Clean all filters in the hot water system including any that
may be located on individual fixtures as they may have
become blocked by debris during the process of flushing
and draining of the hot water system.
13. Check that all isolation valves that are designed to be
open during normal operation of the hot water system
are fully open.
14. The power to the hot water system can now be turned on
at the switchboard.
Note:
Since the water inside the storage tank will now be cold, it
may take some time for the water to return to its optimum
operating temperature.
Pressure and temperature relief valve (PTR valve)
We recommend you gently operate the easing lever on the
relief valve at least once every 6 months. We also recommend
that this relief valve be checked regularly to ensure it is not
continually leaking or that the discharge piping connected to
the valve is not blocked, or at risk of freezing.
warning
Failure to operate the relief valve easing gear at least once
every six months may result in the hot water storage tank
failing or in extreme cases exploding. Continuous leakage
of water from the valve may indicate a problem with the
hot water system.
Water quality
Water quality can vary in different locations and affect the
performance and safe operation of the hot water system.
If the water supply is not within the acceptable limits as
indicated below, the hot water system should not be
installed, and will not be covered by warranty from the
manufacturer. A suitable solution is to implement a water
pre-treatment process to bring the water quality to within
acceptable limits to support the installation.
The saturation index (SI) is a measure of the corrosive or
scaling properties of the water supply. Corrosive water
(SI<-1.0) can corrode copper components. In these
conditions warranty will not apply. Scaling water (SI>0.5)
can cause build up of CaCO3 (Calcium carbonate) which can
impact to the correct operation of moving parts within the
system, including the temperature and pressure relief valve.
In these conditions warranty will not apply.
