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Beschikbare talen
Beschikbare talen
English
• the design static pressure of the supply and return air circuits of the machine with the addition
of the pressure drops due to the accessories.
External system pressure losses
Antifreeze electric heater
Cold Coil
Safety Factor
Available Static Pressure
Pressure drop BEP
18
16
14
12
10
8
6
4
2
0
0
500
1000
1500
1250
• Design imbalance between the supply and return air flow rate.
In this case, the supply/return ratio is 80% due to the presence of extractors in the bathrooms
and the desire to ensure overpressure in the space in relation to outside.
The Flow Rate/Available Static Pressure diagrams allow you to identify the calibration control voltage
for the two circuits and estimate the power absorbed by the machine with the resistance disabled.
500
450
400
350
6V
300
250
5V
200
5,8 V
5,8 V
4V
150
100
3V
50
0
0
250
500
V V
Fan voltage
drive signal (VDC)
SUPPLY
BEP 40/9
BEP 35/5
BEP 25/2
BEP 25/3
2000
2500
3000
Air flow rate m
/h
3
Q
= 1250*0,8 = 1000 m
r
9V
8V
7V
7,3 V
7,3 V
750
1000
1250
1500
Flow rate (m
/h)
3
+
-
V V
200 Pa
3 Pa
20 Pa
1,05
≈ 230 Pa
Air side pressure drop ENY–P3/P4
70
60
50
40
30
20
10
0
0
Control
Control
x
voltage
voltage
1750
2000
2250
-
Fan voltage
drive signal (VDC)
168
RETURN
COMMENTS
100 Pa
-
IN THE CATALOGUE
-
IN THE CATALOGUE
1,05
It is up to the person who
operates the program selection
≈ 110 Pa
500
1000
1500
2000
Air flow rate m
1250
/h
3
500
450
400
350
265 W
265 W
300
250
140 W
140W
200
6V
150
5V
100
4V
50
3V
0
0
250
500
750
1000
1250
Flow rate (m
3
/h)
SUPPLY control voltage: 7,3 V
RETURN control voltage: 5,8 V
Electrical power absorbed:
P
= 140+260 = 400 W
el
NOTE: these are the voltage
values for initial calibration
+
and must be correct in relation
to the actual flow rate
measurements carried out
during commissioning of the
system.
-
-
Cold
Hot
2500
3000
/h
3
9V
8V
7V
1500
1750
2000
2250
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