17
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Technical data
Installer reference guide
245
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
17.3 ESP curve: Indoor unit
ESP for space heating/cooling circuit
3D138391
B (l/min)
0
5
10
15
20
25
30
35
40
A (kPa)
20
30
40
50
10
0
60
70
80
45
a
b
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
3D138391
B (kPa)
0
50 100 150 200 250 300 350 400 450 500
A (l/min)
2
3
4
5
1
0
6
7
8
9
10
a
b
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.
