45
DALIS PRO
DOMESTIC HOT WATER HEAT PUMP
EN
WARNING
Carrying out repair operations on parts that fulfil safety functions jeopardises the safe operation
of the equipment. Replace defective parts only with original spare parts.
The intervention of the thermostat excludes the operation of the electric heating elements but
not of the heat pump system within the permissible operating limits.
15.2. Thermal protections
First level of protection: when the water in the tank rises to 85°C, the unit will stop
and the corresponding error code will display on the control panel. This is an automatic
restart protection. When the tank water temperature drops, the unit can restart.
Second level of protection: when the water in the tank continues to rise and reaches
90°C, the manual reset safety thermostat is activated and the unit stops, requiring a
manual reset.
15.3. Inspections
A visual inspection of the products’ condition and systems including leaks and the ventila-
tion filter is recommended on a quarterly basis, conducted by a qualified professional.
Inspection and tightening of bolts, nuts, flanges and water supply connections that may
have been loosened by vibrations is recommended annually. This must be conducted by a
qualified professional. We also recommend to check all magnesium anodes annually.
15.4. Magnesium anodes
The magnesium anode (No. 18 in Fig. 17), also known as the “sacrificial” anode, prevents
stray currents generated inside the product, which can lead to corrosion processes on the
inside surface and the accumulation of minerals on the inside of the heater.
Magnesium is a metal with a lower electrochemical potential than the inside lining of the
tank, so it first attracts the negative charges that form when the water is heated and causes
corrosion. Therefore, the anode is “sacrificed” by corroding this instead of the tank.
The integrity of magnesium anodes should be checked
at least every year by qualified
personnel. Before carrying out the inspection:
•
Drain the water from the heater.
•
Unscrew the upper anode and check its state of corrosion; if
more than 30% of the
anode surface is corroded, it
must be replaced.
The anodes have appropriate sealing gaskets to prevent water leakage. We recommend to
use anaerobic thread sealant compatible for use in sanitary and heating systems. The gas-
kets should be replaced with new ones when inspected yearly and anode replaced.
Summary of Contents for Dalis Pro 200DHW5
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