Daikin Altherma 3 R F Installer's Reference Manual page 69

ERLA03DAV3 + EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596806-1 – 2019.10
▪ You must check the minimum and maximum water volume.
▪ You might need to adjust the pre-pressure of the expansion vessel.
Minimum water volume
There are no requirements for the minimum water volume.
However, if you have converted the unit to a heating/cooling unit, you need to add
an additional 5 litre of water.
INFORMATION
In critical processes, or in rooms with a high heat load, extra water might be
required.
a Individual room thermostat (optional)
b Overpressure bypass valve (delivered as accessory)
c Shut-off valve
Maximum water volume
Use the following graph to determine the maximum water volume for the
calculated pre-pressure.
a
2.4
2
1.5
1
0.5
0.3
20 50 100
a Pre-pressure (bar)
b Maximum water volume (l)
Example: Maximum water volume and expansion vessel pre-pressure
c
c
M1 M2
a a a
150 200 250
7 Piping installation
|
b
M3
b
290
Installer reference guide
69