To ensure long life and efficient, reliable performance from Andrews water heaters it is
essential that the water heater is installed and serviced in accordance with the
manufacturers instructions.
Each water heater is fitted with one or more magnesium anode(s) which protect the tank
from corrosion caused by electrolytic action within water systems. The magnesium
anodes are sacrificial and as such they erode as they offer protection. Once the anode
has eroded to less than 50% of its original diameter it may not offer sufficient protection.
The anodes should be inspected on an annual basis and replaced as necessary. The
frequency of which the anode needs replacing can vary and water quality can have a
major influence on this.
Andrews offer Correx™UP powered anodes as an alternative to the traditional
magnesium anodes. Correx™UP anodes are made from titanium and are non sacrificial,
therefore they do not have a requirement for maintenance or replacement. However, the
potentiostat, which regulates the protective current supplied to the Correx™UP anode,
has an indicator light which shows green when the anode is functioning correctly and red
if a malfunction occurs.
Correx™UP anodes are available as an optional extra on all models of Andrews storage
water heaters and tanks.
In hard water areas scale formation can occur in hot water systems and water heaters
and the higher the temperature of operation and the higher the volume of water used
the more problematic this scale build up can be. Water treatment is normally
recommended when the hardness reaches 100-150 ppm (7-10 degrees Clark) and above
- a number of water treatment devices are available. When specifying or installing
Andrews water heaters in hard water areas we would recommend that a specialist in this
area of operation is consulted.
Contact Andrews Water Heaters for further information.
INSTALLATION
SECTION 3
HYDROJET
SYSTEM
WATER
CONNECTIONS
WATER QUALITY
AND TREATMENT
8
The upper “jet
ports” direct the flow
outward to begin the
dynamic mixing
action.
The lower “jet ports”
direct the flow
inward to increase
the turbulence.
How the
system works
The heater is fitted with
the Hydrojet Total
Performance System
incorporated in the cold
inlet dip tube. The tube is
designed to increase
turbulence and reduce
sediment build up, reduce
thermal stacking and
increase delivery.
