14 Technical data
Installer reference guide
95
ERLQ004~008CA + 08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
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.
EHVZ04S18CB
70
60
50
40
30
20
10
0
0
5
10
15
20
25
30
A
B
C
4D097420-1
EHVZ08S18CB
70
60
50
40
30
20
10
0
0
5
10
15
20
25
35
A
B
30
C
4D097420-1
A
External static pressure (kPa)
B
Water flow rate (l/min)
C
Operation range
Additional/direct zone
Main/mixed zone
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 circuit.
Flow=Water flow through the unit in the space heating 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.
