35
IVEDITI 4880981_03-2106
Water flow rate [l/h]
Water flow rate [l/h]
Water flow rate [l/h]
Water flow rate [l/h]
Water flow rate [l/h]
Water flow rate [l/h]
Coil pr
essur
e dr
op
s [kP
a]
Coil pr
essur
e dr
op
s [kP
a]
Coil pr
essur
e dr
op
s [kP
a]
Coil pr
essur
e dr
op
s [kP
a]
Coil pr
essur
e dr
op
s [kP
a]
Coil pr
essur
e dr
op
s [kP
a]
The pressure drops in the previous diagram relate to an average water temperature of 10 °C.
The table below states the correction to apply to the pressure drops on variation of the average water temperature.
Water medium temperature
°C
5
10
15
20
50
60
70
Multiplicative coefficients
1.03
1
0.96
0.91
0.78
0.75
0.72
The pressure drops in the previous diagram relate to an average water temperature of 10 °C.
The table below states the correction to apply to the pressure drops on variation of the average water temperature.
Water medium temperature
°C
5
10
15
20
50
60
70
Multiplicative coefficients
1.03
1
0.96
0.91
0.78
0.75
0.72
PRESSURE DROPS COOLING ONLY
2-PIPE SYSTEM PRESSURE DROPS HEATING ONLY
4-PIPE SYSTEM PRESSURE DROPS HEATING ONLY
0
20
40
60
80
100
120
140
0
68
136
205
273
341
409
478
0
200
400
600
800
1000
1200
1400
1600
1800
0
0,881
1,761
2,642
3,522
4,403
5,283
6,164
7,045
7,925
VED 030I
VED 040I
VED 130I
VED 140I
VED 230I
VED 240I
VED 330I
VED 340I
0
20
40
60
80
100
120
140
160
180
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0
2,20
4,40
6,60
8,81
11,01
13,21
15,41
17,61
19,81
22,01
VED 530I
VED 540I
VED 541I
VED 730I
VED 740I
VED 741I
0
68
136
205
273
341
409
478
546
614
0
10
20
30
40
50
60
70
80
90
0
100
200
300
400
500
600
700
VED 030I
VED 130I
VED 230I
0
0,440
0,881
1,321
1,761
2,201
2,642
3,082
0
34
68
102
136
171
205
239
273
307
0
10
20
30
40
50
60
70
80
90
100
0
500
1000
1500
2000
2500
3000
3500
VED 541I
VED 741I
2,20
0
4,40
6,60
8,81
11,01
13,21
15,41
0
34
68
102
136
171
205
239
273
307
341
0
20
40
60
80
100
120
0
200
400
600
800
1000
1200
1400
1600
1800
VED 030I
VED 040I
VED 130I
VED 140I
VED 230I
VED 240I
VED 330I
VED 340I
0
0
0,881
1,761
2,642
3,522 4,403
5,283
6,164 7,045
7,925
68
136
205
273
341
409
0
20
40
60
80
100
120
140
160
180
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
VED 530I
VED 540I
VED 730I
VED 740I
3,522
0
3
6
9
12
15
17
20
23
26
0
2,20
4,40
6,60
8,81
11,01
13,21
15,41
17,61
19,81
22,01
Summary of Contents for VED
Page 56: ...56 IVEDPY 1902 4460510_00 ...