Vasco EnergyPlus ENY–P1 Manuel D'installation, Utilisation Et Entretien page 174

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)
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
SUPPLY
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)
174
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
150
5V
100
4V
50
3V
0
0 250 500 750 1000 1250
Flow rate (m /h)
3
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
6V
1500 1750 2000 2250