Appendix
31
Greenstar – 6721852556 (2022/11)
13.4
Heating circuit performance chart
Fig. 55 Heating circuit performance chart for 3 kW and 6 kW (DPCV = Differential Pressure Control Valve)
43
42
41
40
39
38
37
36
35
34
33
32
31
48
47
46
45
49
50
51
52
53
54
55
56
57
58
71 70
69
68
66
67
65
75
74
73
80/70°C
80/60°C
70/40°C
50/30°C
40/30°C
35
36
34
33
32
31
72
73
71
74
68
67
66
65
64
80/70°C
80/60°C
70/40°C
50/30°C
40/30°C
44
45
46
47
48
49
50
51
52
53
54
40
41
39
38
37
36
35
34
33
32
31
32
33
34
35
60
70
80
90
150
100
50
40
30
20
15
9
10
7
8
6 5
4
3
2
1.5
1 0.9 0.8
0.6
0.7
0.5
0.4
0.3
80
90
100
150
200
70 60 50
40
30
20
15
8
9
10
7 6 5
4
3
2
1.5
0.7
0.8
0.9
1
0.6 0.5
90 80 70 60 50
40
30
20
15
10 9 8 7 6 5
4
3
2
1.5
1 0.9 0.8 0.7 0.6 0.5
100 90 80 70 60 50
40
30
20
15
10 9 8 7 6 5
4
3
2
1.5
1 0.9 0.8 0.7
50
55
60
65
70
75
80
85
90
[°C]
Kv = 1.7 m³/hr
Kv = 1.4 m³/hr
Kv = 1.3 m³/hr
Kv = 1.1 m³/hr
0.0104
0.01
12
0.012
0.014
0.016
0.02
0.024
0.028
0.032
0.036
0.04
0.048
0.056
0.064
0.072
0.088 0.08
0.16
0.104
0.1
12
0.12
0.14
0.16
0.2
0.24
36
40
44
48
52
56
60
80
100
140
180
200
240
280
320
360
400
440
480
520
560
600
800
ΔP
[kPa]
[l/s]
[l/h]
c
d
b
[°C]
6k
W
3k
W
HIU
HIU + Heat
Meter
HIU + DPCV
HIU + DPCV +
Heat Meter
a
b
d
c
a
b
c
d
Example
Supply temperature = 65°C
Return temperature = 34,8°C (50/30°C; 6 kW)
Supply volumetric
flow rate = 0.05 l/s (177 l/h)
Supply dif
ferential pressure (= 6,8 kPa / + heat meater = 10.9 kPa / + DPCV = 1
1.2 kPa / + DPCV + heat meater = 15,5 kPa)
