Daikin Altherma 3 GEO Series - Changing the Pre-Pressure of the Expansion Vessel; Connecting the Brine Piping; About Connecting the Brine Piping

7 | Piping installation
Installer reference guide
68
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
NOTICE
When circulation in each space heating/cooling loop is controlled by remotely
controlled valves, it is important that the minimum water volume is guaranteed,
even if all of the valves are closed.
M2M1
a
c
a
M3
a
b
d
d
a External room thermostat
b Remote outdoor sensor
c By-pass valve (field supply)
d Shut-off valve
Minimum flow rate
Minimum required flow rate
Heat pump operation No minimum required flow
Cooling operation 10l/min
Backup heater operation No minimum required flow during
heating
7.1.4 Changing the pre-pressure of the expansion vessel
NOTICE
Only a licensed installer may adjust the pre-pressure of the expansion vessel.
The expansion vessel is field supplied. For more information on how to change the
pre-pressure, see the manual of the expansion vessel.
Changing the pre-pressure of the expansion vessel should be done by releasing or
increasing nitrogen pressure through the Schrader valve of the expansion vessel.
7.2 Connecting the brine piping
7.2.1 About connecting the brine piping
Before connecting the brine piping
Make sure the indoor unit is mounted.