8
Operating manual
TROX air terminal units
Type VFC volume flow controllers
Mechanical stop
for
min
Magnetic gear
-
box disengage-
ment
Mechanical stop
for
max
Position indicator
with magnet
Variable volume flow control,
min
and
max
setting with mechanical stops
Characteristic for determining the volume flow rate
Set the set flow rate as follows:
•
Determine the setting value for the set flow rate from the
characteristic or the table on page 5.
•
Activate gearbox disengagement with magnet. The magnet
is integrated in the removable position indicator
•
Make the corresponding settings on the mechanical stops.
• Deactivate gearbox disengagement again and reconnect the
position indicator, see also page 10.
Setting the set flow rate
Each VFC carries a characteristic to determine the setting
values on site (see example, nominal size 160).
min
settings below 3 results in an unregulated airflow
dependent on the duct pressure that is not less than
min-unit
.
U
..
min
-
max
switching operation, actuator with
mechanical stops
Actuator M01 ... M02
60
100
65
50
38
100
150
200
250
300
350
392
VFC 160
18
40
80
120
140
185
160
180
100
200
300
400
500
550
450
350
250
150
666
600 650
3
4
5
6
7
8
9
10
l/s
cfm
m³/h
