Daikin EPRA18DAV3 Installer's Reference Manual page 217

EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
a Clip
b Magnetic filter/dirt separator
c Air purge valve
2 Install the 2 clips to fix the water filter to the water circuit pipes.
3 Make sure that the air purge valve of the water filter is in the open position.
4 Open the valve (if equipped) of the water circuit towards the expansion vessel.
CAUTION
Make sure to open the valve (if equipped) towards the expansion vessel, otherwise
the overpressure will be generated.
5 Open the stop valves and add water to the water circuit if needed.
12 Maintenance and service
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Installer reference guide
217