Argo AUAH Notice D'installation page 34

7.3.4 - CHECKING THE PRESSURE LOSSES
EG
With the pump running at the set speed, compare the reread flow with the following curves to determine the
system pressure losses and compare them with the calculations made during the installation of the system.
AUAH
0 0,5 1 1,5 2 2,5 3 3,5
0 0,2
0 2
AUCH
H/m
8
PWM1
4770/ 5
7
PWM1
4270/ 15
6
5 PWM1
3780/ 25
4
PWM1
3280/ 35
3
PWM1
2780/ 45
2
PWM1
2280/ 55
PWM1
1780/ 65
1
PWM1
1290/ 75
0
0 0,5 1,0
0 0,2
0 2 4
Example of calculation for floor system with AUBH:
• Set the pump speed to re-read a capacity of 1.10
3
m /h (see table of page 33).
• Calculate the value PWM of the pump, as follows:
PWM = 100% - set speed.
• For example, if the set speed is 75%,
PWM = (100% - 75%) = 25% (25
• On the AUBH chart, cross the vertical line corre-
sponding to 1.10 m
sponding to the calculated % PWM and the curve
of the unit pressure losses.
• The system pressure losses correspond to the
pressure losses of the pump curve less the unit
pressure losses. In our example, the pressure los-
ses are 45-13 = 32 kPa.
• Once the checks have been completed, press the
0,4 0,6
4 6 8 10
1,5 2,0 2,5 3,0 3,5 4,0 Q/m³/ h
0,4 0,6 0,8 1,0
6 8 10 12 14 Q/Igpm
PWM1
3
/h with the pump curve corre-
AUBH
H/m
4660/ 5
7
4178/ 15
6
5
3695/ 25
4
3213/ 35
3
2730/ 45
2
2248/ 55
1765/ 65
1
1283/ 75
0
0
0
0,8
Q/l/s
Q/Igpm 0
AUDH
p/kPa H/m
80
8
4770/ 5
70
7
4270/ 15
60
6
50
5
3780/ 25
40
4
3280/ 35
30
3
2780/ 45
20
2
2280/ 55
1780/ 65
10 1
1290/ 75
0 0
0
Q/l/s 0
0
H/m
7
6
5
) 4,5
4
3
2
1
0
button until you return to the main menu.
34
PWM1
PWM1
PWM1
PWM1
PWM1
PWM1
PWM1
PWM1
0,5 1,0 1,5 2,0
0,2 0,4 0,6
2 4 6 8
PWM1
PWM1
PWM1
PWM1
PWM1
PWM1
PWM1
PWM1
0,5 1,0 1,5 2,0 2,5 3,0
0,2 0,4 0,6 0,8
2 4 6 8 10
Pump curve
4660/ 5 PWM1
4178/ 15 PWM1
PWM1
3695/ 25
PWM1
3213/ 35
PWM1
2730/ 45
PWM1
2248/ 55
PWM1
1765/ 65
PWM1
1283/ 75
0 0,5 1,0 1,1 1,5 2,0 2,5
0 0,2 0,4 0,6
0 2 4 6 8
p/kPa
70
60
50
40
30
20
10
0
Q/m³/ h
2,5 3,0
0,8
Q/l/s
10 Q/Igpm
p/kPa
80
70
60
50
40
30
20
10
0
3,5 4,0 Q/m³/ h
1,0 Q/l/s
12 14 Q/Igpm
p/kPa
70
Unit pressure
losses
60
50
45
40
30
32
20
13
10
0
3,0 Q/m³/ h
0,8
Q/l/s
10 Q/Igpm