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14
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Maintenance and service
14.2.2 Yearly maintenance outdoor unit: instructions
Installer reference guide
234
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
Close the valve. 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.
2
1
3
Water pressure
Keep water pressure above 1 bar. If it is lower, add water.
Water pressure relief valve
Open the valve and check if it operates correctly. The water may be very hot!
Checkpoints are:
▪
The water flow coming from the relief valve is high enough, no blockage of the
valve or in between piping is suspected.
▪
Dirty water coming out of the relief valve:
-
open the valve until the discharged water does NOT contain dirt anymore
-
flush the system
It is recommended to do this maintenance more frequently.
Pressure relief valve of the domestic hot water tank (field supply)
Open the valve.
CAUTION
Water coming out of the valve may be very hot.
▪
Check if nothing blocks the water in the valve or in between piping. The water
flow coming from the relief valve must be high enough.
▪
Check if the water coming out of the relief valve is clean. If it contains debris or
dirt:
-
Open the valve until the discharged water does not contain debris or dirt
anymore.
-
Flush and clean the complete tank, including the piping between the relief
valve and cold water inlet.
To make sure this water originates from the tank, check after a tank heat up cycle.
EBLA09~16D + EDLA09~16D
Daikin Altherma 3 M
4P620241-1B – 2022.05
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