Gorenje HPWW12, Инструкции по установке и запуску, Страница: 61 / 64

Water-to-water Heat Pump
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15. Maintenance
In order to prevent damages to the heat pump, do not use the pump as a storage surface. Clean
the outer surface of the pump with a damp cloth.
To avoid causing damage to the surface, never use cleaning agents containing coarse particles,
sodium carbonate, acids or chlorines.
Layers of lime scale depositing inside the heat exchanger in the heat pump may cause
malfunctions and failure in operation. To avoid this, make sure the heat exchanger is free of
deposits or remove the deposits and clean the system as described below.
Cleaning of the Heating System
The combination of the steel structure and oxygen in the heating circuit may cause corrosion. Via
the valves, the circulation pump and the plastic pipes, the loose rust particles may enter the
heating system. With a floor heating system, use of impermeable material is mandatory.
We recommend using pipelines made of adequately corrosion resistant material in order to prevent
depositing of rust particles in the heat pump condenser.
Also, heating water may contain sealing material particles and lubricants. If the operation of the
heat pump is impaired, let an expert clean the system.
We recommend flushing the heat exchanger with counter flow.
We recommend using a 5% phosphorous acid solution. For more frequent cleaning, use 5% formic
acid.
To prevent leakage of acid into the heating system, connected the flushing device directly to the
heat pump.
Eventual residues of the cleaning agent may cause damages to the system. To prevent eventual
damages, make sure the system is thoroughly rinsed with neutral media.