Esp Curve; Esp Curve: Indoor Unit - Daikin Altherma EHVH04S18CB3V Installer's Reference Manual

14 Technical data
14.9

ESP curve

14.9.1

ESP curve: Indoor unit

Note: A flow error will occur when the minimum water flow rate is not
reached.
EHVH/X04=EHVH/X04
A (kPa)
80
70
60
50
40
30
C
20
10
0
0 5 10 15
EHVH/X08=EHVH/X08
A (kPa)
80
70
60
50
40
30
C
20
10
0
0 5 10 15
A External static pressure
B Water flow rate
C Operation range
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).
ESP=External static pressure [kPa] in the space heating/cooling
circuit.
Flow=Water flow through the unit in the space heating/cooling
circuit.
Notes:
▪ Selecting a flow outside the area of operation can cause damage
or malfunction of the unit. See also the minimum and maximum
allowed water flow range in the technical specifications.
▪ Water quality MUST be according to EN directive EC98/83EC.
Installer reference guide
108
20 25 30
B (l/min)
4D090626-1
20 25 30
B (l/min)
4D090626-1
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1A – 2016.02