Esp Curve: Indoor Unit - Daikin Altherma 3 H MT W Installer's Reference Manual

16 | Technical data

16.6 ESP curve: Indoor unit

Installer reference guide
280
Note: A flow error will occur when the minimum water flow rate is not reached.
A (kPa)
80
70
60
50
40
30
20
10
0
0 5 10 15
D E
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 flow during normal operation
E Minimum flow during backup heater operation
F Minimum flow during defrost heater operation
Dashed lines: Operation area is extended to lower flow rates only in case the unit
operates with heat pump only. (Not in startup, no backup heater operation, no
defrost operation.)
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.
C
B (l/min)
20 25 30 35 40 45
F
EPRA08~12EAV3+W1 + ETBH/X12EF6V+9W
Daikin Altherma 3 H MT W
4P634885-1 – 2021.03