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Checking sacrificial anode
A sacrificial anode is mounted in the hot water tank (not in stainless steel tanks) to protect the tank from corrosion. The sacrificial an-
ode is electrically monitored and it is important to replace it immediately after an alarm is detected in the control panel.
It depends on the water quality, installation and consumption how long it will take between replacements. From experience, it can take
between 1/2 to 10 years before it needs to be replaced. The sacrificial anode is a wear part that must be replaced by a professional
craftsman.
The warranty for the hot water tank only applies if the sacrificial anode is replaced when needed.
Checking safety valve
The safety valve for the domestic hot water should have an annual function check to ensure it is functional at all times.
The function check must be carried out by a trained plumber.
Check air intake and discharge
It is important for operation of the unit that air can freely move through the air intake and discharge.
If roof stacks have been fitted to the air intake and discharge, check that they are not blocked with birds' nests, leaves or other dirt
which can hamper air passage.
If, instead of roof stacks, grilles have been mounted in facades or eaves, check that they are not clogged with leaves or dirt. Grilles are
particularly likely to become clogged.
Check ventilation ducts
It is important for operation of the unit that there is free air passage through the ventilation ducts.
After some years of operation, dirt will attach itself to ventilation ducts or tubes, and accumulations may lead to higher pressure drop
in the ducts, leading to higher power consumption. It is therefore important to clean out the ducts when too much dirt has collected.
After attending to the inlet and outlet valves, it will be advisable to have them adjusted again, to ensure optimum operation of the ven-
tilation system.
However, it will not be necessary to clean ducts more than every few years.
The heat pump
The heat pump must be inspected in accordance with applicable laws and regulations, such that it is kept in good condition and meets
safety and environmental requirements.
The installer is obliged to inform the owner/user about applicable laws and regulations.
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