Water Quality And Treatment - andrews HIflo EVO HF 30/300 Installation And Service Manual

3.6

Water Quality and Treatment

Issue 4 21042918
Where extreme conditions of water hardness exist, scale can
form in any water heating equipment, especially when the heater
is working under conditions of constant heavy demand and at
high temperatures.
Each water heater is fitted with a Correx
as an alternative to the standard magnesium anodes. These
anodes do not need maintenance or replacement. The
potentiostat which regulates the current to the Correx
features an indicator light which shows green to indicate correct
function and red to indicate malfunction. These anodes are
available as an optional extra on all Andrews heaters.
In hard water areas, scale formation can occur in hot water
systems and hot water heaters. The higher the temperature and
volume of water used, the more problematic the scale build- up
can be. Water treatment is normally recommended when the
hardness reaches 100 - 150ppm (7 - 10 degrees Clark) and
above. This problem can be minimised by reducing the water
temperature in the heater and by fitting suitable water pre-
treatment equipment.
Note
When installing Andrews Water Heaters in hard water
areas we would recommend that a water treatment
specialist is consulted.
TM
UP powered anode
TM anode,
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