5.3 Cleaning of the heat conductors
Cleaning of the heating system (water side)
Residue of grease and sealants in pipes can pollute the condenser of the device up to a point where
cleaning is necessary. In this case the authorised person should perform the cleaning with a mild
solution (up to 5 %) of phosphorous acid which should be heated to room temperature. The condenser
has to be completely disconnected from the heating system and rinsed with diluted phosphorous acid
in the opposite direction of normal flow.
After cleaning the condenser has to be rinsed thoroughly with an agent neutralising the acid detergent
so as to prevent contamination of the heating system.
CAUTION
Acid detergents should be used carefully, instructions of the manufacturer and
environmental regulations must be followed. The cleaning can only be performed by a
qualified person.
If any doubts about using the detergents arise, consult with the manufacturer of the detergent.
5.4 Operation malfunctions
In case of a malfunction during the operation of the device, the display of the TERMOTRNIC controller
displays the warning “Caution, malfunction”.
Find the malfunction description in the manual. For error correction call the installer who installed the
device.
