Care And Maintenance - LG THERMA V Series Installation Manual

Care and Maintenance

The electrical and hardware installation of the device must be visually inspected once in a year. If any
malfunctions have been detected, contact the authorised personnel.
The servicing and maintenance of the device can only be performed by a person authorized by
the manufacturer. In case of a malfunction, first contact the installer who installed the device.
Cleaning the water filter
Cleaning of water filters of the device is advised to be performed at least once yearly.
A blocked water filter and magnetic filter can lead to disturbances in operation of the device or
incorrect functioning of the device. In this case, the screen displays a warning of flow malfunction
("Caution, flow!").
Monitoring the pressure in the heating system
• Periodically, once yearly, check the water pressure in the heating system.
• In case the pressure falls (i.e. Leakage of the system) and as a result there is not enough water
flow the screen displays a warning of flow malfunction ("Caution, flow!").
Cleaning of the heat exchangers
Cleaning of the heating system (water section)
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 authorized person should clean the pipes with a
solution (up to 5 % of phosphorous acid) that 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 neutralizing the acid
detergent so as to prevent the contamination of the heating system.
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 you are doubtful about using the detergents arise, consult with the manufacturer of the detergent.
Check Points, Maintenance and Troubleshooting
Installation Manual 61