AquaMAX EM50 Series - Manual (Page 12)

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The life of the storage cylinder may be extended by arranging a qualified
person to periodically inspect the anode and replace if required. If the
anode is not replaced during a five (5) year service (refer to “Major Five (5)
Year Service” on page 9) then the maximum time after installation when the
anode should be replaced for this electric water heater is eight (8) years.
For water supplies which are either softened, desalinated or where the
water supply may alternate between a water tank and a reticulated public
supply or another supply, it is recommended the anode be replaced within
five (5) years of installation.
Change of Water Supply
The changing or alternating from one water supply to another can have a
detrimental effect on the operation and/or life expectation of the water
heater storage cylinder, pressure temperature relief valve and heating unit.
Where there is a changeover from one water supply to another, e.g. a
rainwater tank supply, bore water supply, desalinated water supply, public
reticulated water supply or water brought in from another supply, then
water chemistry information should be sought from the supplier or it should
be tested to ensure the water supply meets the requirements given in these
guidelines for the Aquamax warranty to apply.
Water Chemistry
This water heater must be installed in accordance with this advice to
be covered by the Aquamax warranty.
This water heater is manufactured to suit the water conditions of most
public reticulated water supplies. However, there are some known water
chemistries which can have detrimental effects on the water heater and its
operation and/or life expectancy. If you are unsure of your water chemistry,
you may be able to obtain information from your local water supply
authority. This water heater should only be connected to a water supply
which complies with these guidelines for the Aquamax warranty to apply.
Total Dissolved Solids (TDS)
Some water analysis reports may state the conductivity of the water rather
than the level of total dissolved solids. Conductivity, measured in
microsiemens per centimetre (µS/cm), is directly proportional to the TDS
content of the water. TDS, in mg/Litre, is approximately 70% of the
conductivity in µS/cm.
The Aquamax warranty will not cover resultant faults to the storage cylinder
if this water heater is connected at anytime to a water supply where the
TDS content of the water exceeds 600 mg/Litre. In locations where the