16 | Technical data
Installer reference guide
273
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
16.6 ESP curve: Indoor unit
Note: A flow error will occur when the minimum water flow rate is not reached.
4D124954
B (l/min)
0
40
60
80
100
30
50
70
90
110
20
0
5 10 15 20 25 30 35 40 45 50 55 60 65
10
120
C
D
A (kPa)
E F1F2
A External static pressure in the space heating/cooling circuit
B Water flow rate through the unit in the space heating/cooling circuit
C Operation range
D Minimum water flow during normal operation
E Minimum water flow during backup heater operation
F1 Minimum water flow during defrost operation (for E models)
F2 Minimum water flow during defrost operation (for E7 models)
Notes:
▪ Selecting a flow outside the operating area can damage the unit or cause the unit
to malfunction. See also the minimum and maximum allowed water flow range in
the technical specifications.
▪ Make sure water quality complies with EU directive 2020/2184.
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