Esp Curve: Indoor Unit - Daikin Altherma 3 WS EWSAH06UD 9W Series Installer's Reference Manual

17 | Technical data

17.3 ESP curve: Indoor unit

Installer reference guide
252
ESP for space heating/cooling circuit
A (kPa)
80
70
60
50
40
a b
30
20
10
0
0 5 10 15
A External static pressure (ESP)
B Water flow rate
a Minimum water flow rate during heat pump operation
b Minimum water flow rate during cooling operation
NOTICE
Selecting a flow outside the operating area can damage the unit or cause the unit to
malfunction.
ESP for central water loop circuit
A (l/min)
10
9
8
7
6
5
a
4
3
2
1
0
0 50 100 150 200 250 300 350 400 450 500
A External static pressure (ESP)
B Central water loop flow rate
a Minimum required differential pressure across heat pump on central water loop
b Maximum allowed differential pressure across heat pump on central water loop
NOTICE
Selecting a flow outside the operating area can damage the unit or cause the unit to
malfunction.
B (l/min)
20 25 30 35 40 45
3D138391
b
B (kPa)
3D138391
EWSAH/X06UD
Daikin Altherma 3 WS
4P675765-1 – 2022.04