T-EP wall control
50
0
0
500
1000
1500
2000
2500
Air flow rate m
3
/h
Pressur
e dr
op P
a
Pressur
e dr
op P
a
Air flow rate m
3
/h
3000
BEP 25/3
Hot
Cold
BEP 25/2
BEP 35/5
BEP 40/9
0
0
2
4
6
8
10
12
14
16
18
10
20
30
40
50
60
70
500
1000
1500
2000
2500
3000
1250
1250
9V
8V
7V
6V
5V
4V
3V
0
250
500
750
1000
1250
1500
1750
2000
2250
0
50
100
150
200
250
300
350
400
450
500
7,3 V
7,3 V
5,8 V
5,8 V
Control
voltage
Control
voltage
x
0
250
500
750
1000
1250
1500
1750
2000
2250
0
50
100
150
200
250
300
350
400
450
500
9V
8V
7V
6V
5V
3V
4V
265 W
265 W
140W
140 W
Flow rate (m
3
/h)
A
va
ilable S
tatic P
ressure (P
a)
Single F
an Ab
sorbed P
ower (W)
Flow rate (m
3
/h)
SUPPLY
RETURN
COMMENTS
External system pressure losses
200 Pa
100 Pa
-
Antifreeze electric heater
3 Pa
-
IN THE CATALOGUE
Cold Coil
20 Pa
-
IN THE CATALOGUE
Safety Factor
1,05
1,05
It is up to the person who
operates the program selection
Available Static Pressure
≈ 230 Pa
≈ 110 Pa
-
• 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.
• 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.
Q
r
= 1250*0,8 = 1000 m
3
/h
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.
valore tensione
del ventilatore
+
-
VV
valore tensione
del ventilatore
+
-
VV
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.
Air side pressure drop
ENY–P3/P4
Pressure drop
BEP
SUPPLY control voltage:
7,3 V
RETURN control voltage:
5,8 V
Electrical power absorbed:
P
el
= 140+260 = 400 W
