This water heater must be installed in accordance with this advice to be covered by the Rheem
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 Rheem warranty to apply.
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 a water heater cylinder and a temperature pressure relief valve.
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 Rheem warranty to apply.
The vitreous enamel lined cylinder of the water heater is only covered by the Rheem warranty when the total
dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded anode
is used. If an incorrect colour coded anode is used in the water heater, any resultant faults will not be covered
by the Rheem warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the
water heater cylinder.
The correct colour coded anode must be selected and fitted to the water heater in accordance with the following
advice and the Anode Selection chart on page 11 for the Rheem warranty to apply to the water heater cylinder.
Total Dissolved Solids
Anode colour code
0 – 40 mg/L
40 – 150 mg/L
Green or Black
150 – 400 mg/L
400 – 600 mg/L
Black or Blue
600 – 2500 mg/L
2500 mg/L +
Blue (no cylinder warranty)
The changing of an anode must be carried out by a qualified person.
Note: 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 / L, is approximately 70% of the conductivity in µS / cm.
CONDUCTIVITY - µS/cm
TOTAL DISSOLVED SOLIDS & CONDUCTIVITY
(vitreous enamel lined water heater cylinder)
40 150 400 600 TOTAL DISSOLVED SOLIDS (TDS) - mg/L
warranty applies to a vitreous enamel lined water heater cylinder if the
correct coloured anode is used for the TDS / conductivity level of water
to a vitreous
60 215 570 860