16.6 ESP curve: Indoor unit
EPRA14~18D + ETVZ16S18+23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
Note: A flow error will occur when the minimum water flow rate is not reached.
Main zone (mixed zone)
A (kPa)
110
100
90
80
70
60
50
40
30
20
10
0
0
5
10
15
D
E
Additional zone (direct zone)
A (kPa)
110
100
90
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 water flow during normal operation
E Minimum water flow during backup heater operation
F1 Minimum water flow during defrost operation (for E models)
F2 Minimum water flow during defrost operation (for E7 models)
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
20
25
30
35
40
45
F2
F1
C
20
25
30
35
40
45
F2
F1
16
Technical data
|
50
55
60
65
B (l/min)
4D124956
(main)
50
55
60
65
B (l/min)
4D124956
(add)
Installer reference guide
267