Daikin Altherma 3 H HT EPRA18DAW1, Installer'S Reference Manual

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12 | Maintenance and service
Installer reference guide
202
EPRA14~W1 + ET9W
Daikin Altherma 3 H HT F
4P587503-1A – 2020.01
12.3 Yearly maintenance
12.3.1 Yearly maintenance outdoor unit: overview
Check the following at least once a year:
▪ Heat exchanger
▪ Water filter
12.3.2 Yearly maintenance outdoor unit: instructions
Heat exchanger
The heat exchanger of the outdoor unit can get blocked up due to dust, dirt,
leaves, etc. It is recommended to clean the heat exchanger yearly. A blocked heat
exchanger can lead to too low pressure or too high pressure leading to worse
performance.
Water filter
Clean and rinse the water filter.
NOTICE
Handle the filter with care. To prevent damage to the mesh of the filter, do NOT use
excessive force when you reinsert it.
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2
12.3.3 Yearly maintenance indoor unit: overview
▪ Water pressure
▪ Water filters
▪ Magnetic filter/dirt separator
▪ Water pressure relief valve
▪ Relief valve hose
▪ Pressure relief valve of the domestic hot water tank
▪ Switch box
▪ Descaling
▪ Chemical disinfection
12.3.4 Yearly maintenance indoor unit: instructions
Water pressure
Keep water pressure above 1 bar. If it is lower, add water.
Water filters
Clean the water filters.