Specifications

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6720649497 SM HP270-1 2012/09 en
2.1 Anode Protection
The anode, installed in the water heater tank, will slowly dissipate whilst protecting it. The life of the water heater
tank is ensured by the periodical inspection, done by an authorised person, replacing it when required.
The anode inspection period shall take in consideration that, for softened water supply or in areas of worse water
quality, it is recommended to inspect it more often and for some other critical different situations, a water treatment
is recommended.
The DIN 4753 determines that all magnesium anodes must be checked, at least each two years (considering
normal conditions), ensuring a visual control.
The acceptable water quality to the heat pump storage tank requires:
- Water pH between 6,5 and 9,5
- Hardness range ≥ 3.0 ºdH.
Depending on the appliance production date, the anodes can have a measured terminal, or not. Those which do
not have a measurements terminal need a direct visual inspection to ensure its efficient operation and consequent
life time of the tank. Anodes with measurement terminal must be connected to the HMI in order to ensure correct
operation.
(a) Anode without terminal (non isolated) (b) Anode with terminal (isolated)
Pict.8 – Magnesium anode and measurement connections
Pict.9 – Magnesium anode with measurement terminal