Daikin Altherma EPGA16DAV3, Руководство по установке для специалистов

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11 Maintenance and service
Installer reference guide
70
EPGA11~ EA9W
Daikin Altherma – Low temperature split
4P556075-1 – 2019.02
11.3 Checklist for yearly maintenance
of the outdoor unit
Check the following at least once a year:
▪ 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.
11.4 Checklist for yearly maintenance
of the indoor unit
Check the following at least once a year:
▪ 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
Water pressure
Keep water pressure above 1 bar. If it is lower, add water.
Water filters
Clean the water filters.
NOTICE
Handle the water filters with care. Do NOT use excessive
force when you reinsert the water filters so as NOT to
damage the water filters mesh.
1 3
2
5
4
Magnetic filter/dirt separator
b
a
c
d
a Screw connection
b Magnetic sleeve
c Drain valve
d Drain cap
The yearly maintenance of the magnetic filter/dirt separator consists
of:
▪ Checking if both parts of the magnetic filter/dirt separator are still
screwed tight (a).
▪ Emptying the dirt separator as follows:
1 Take off the magnetic sleeve (b).
2 Unscrew the drain cap (d).
3 Connect a drain hose to the bottom of the water filter so that the
water and dirt can be collected in a suitable container (bottle,
sink...).
4 Open the drain valve for a couple of seconds (c).
Result: Water and dirt will come out.
5 Close the drain valve.
6 Screw the drain cap back on.
7 Reattach the magnetic sleeve.
8 Check the pressure of the water circuit. If required, add water.
NOTICE
▪ When checking the magnetic filter/dirt separator for
tightness, hold it firmly, so as NOT to apply stress to
the water piping.
▪ Do NOT isolate the magnetic filter/dirt separator by
closing the shut‑off valves. To properly empty the dirt
separator, sufficient pressure is required.
▪ To prevent dirt from remaining in the dirt separator,
ALWAYS take off the magnetic sleeve.
▪ ALWAYS first unscrew the drain cap, and connect a
drain hose to the bottom of the water filter, then open
the drain valve.
INFORMATION
For yearly maintenance, you do not have to remove the
water filter from the unit to clean it. But in case of trouble
with the water filter, you might have to remove it so that
you can thoroughly clean it. Then you need to do as
follows:
▪ "11.5.1 To remove the water filter" on page 71
▪ "11.5.2 To clean the water filter in case of trouble" on
page 71
▪ "11.5.3 To install the water filter" on page 72
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 hose
Check whether the pressure relief valve hose is positioned
appropriately to drain the water. See
"7.4.4 To connect the drain
hose to the drain" on page 26 .
Relief valve of the domestic hot water tank (field supply)
Open the valve and check the correct operation. 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.