8 | Piping installation
Installer reference guide
101
ERGA04~08E + EHVH04+08SU18+23E
Daikin Altherma 3 R F
4P629090-1C – 2022.08
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.
FHL1
FHL2
FHL3
M1
T1
M2
T2
M3
T3
fdcba
f
g h
e
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Pump
f Shut-off valve
g Collector (field supply)
h Differential pressure bypass valve (delivered as accessory)
FHL1...3 Floor heating loop (field supply)
T1...3 Individual room thermostat (optional)
M1...3 Individual motorised valve to control loop FHL1...3 (field supply)
Maximum water volume
Use the following graph to determine the maximum water volume for the
calculated pre-pressure.
0.3
0.5
1
1.5
2
2.4
5020 100 150 200 250 290
a
b
a Pre-pressure (bar)
b Maximum water volume (l)
Example: Maximum water volume and expansion vessel pre-pressure
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