49
FIRE DAMPER - FD
ELECTRIC
ACTUATOR
M24-S, M230-S,
Damper is delivered in closed position. When
electric actuator is connected to the power supply
damper will open. When the damper reaches the end
position (damper open), the electro motor will stop.
Closing fire damper takes place automatically when
a power failure occurs. Thermal tripping device that
comes with fire damper causes power circuit break
at a temperature of 72 °C, optional 95 °C (inside
or outside duct). If checking is needed for proper
functioning of fire damper, pushing the switch on the
thermal tripping device will close damper.
1
negative (direct-current) or neutral (alternating current)
2
positive (direct-current) or faze (alternating current)
S1 common micro switch closed damper
S2 normally closed micro switch closed damper
S3 normally open micro switch closed damper
S4 common micro switch open damper
S5 normally closed micro switch open damper
S6 normally open micro switch open damper
Tf
temperature sensor on the outer side of the duct
(ambient temperature) max. 72 °C
Type of Belimo
actuator
BFL24-T BFN24-T BFL230-T BFN230-T
BF24-T
BF230-T
Nominal
voltage /
power
voltage
AC/DC 24
V, 50/60
Hz
AC 24 V,
50/60 Hz
AC 230 V,
50/60 Hz
AC 230 V,
50/60 Hz
AC/DC
24 V,
50/60 Hz
AC 230
V, 50/60
Hz
opening
2,5 W
4 W
3,5 W
5 W
7 W
8.5 W
holding
0,8 W
1,4 W
1,1 W
2,1 W
2 W
3 W
for wire
sizing
4 VA
6 VA
6,5 VA
10 VA
10 VA
11 VA
End switch
1 mA...3
A (0,5 A),
DC 5 V...
AC 250V
1 mA...3
A (0.5
A), DC
5 V...AC
250 V
1 mA...3
A (0.5 A),
DC 5 V...
AC 250 V
1 mA...3 A
(0.5 A), DC
5 V...AC
250 V
1 mA...6
A (3 A),
DC 5 V...
AC 250
V
1 mA...3
A (0.5
A), DC
5 V...AC
250 V
Running
time
motor
< 60 s
< 60 s
< 60 s
< 60 s
< 120 s
< 120 s
spring
return
~ 20 s
~ 20 s
~ 20 s
~ 20 s
~16 s
~16 s
Ambient temperature
range
min. -30 °C, max. 50 °C
When switch on tripping device is released, the
damper will open. Damper can be opened without
connecting to a voltage with enclosed handle turning
in the direction of the arrow on electric actuator
(clockwise). Damper can be locked in the desired
position by fast turning back handle a quarter of a
turn (counter clockwise) for Belimo BF, and by
puling brake on Belimo BFL and BFN.
To unlock the electro motor, turn handle clockwise
for a quarter of a turn for Belimo BF, or release brake
for Belimo BFL and BFN. After release, damper will
be closed by return spring. When damper is opened
manually, electric actuator will not move the damper
into closed position in case of power failure.
Wiring diagram
Technical specifications
ACTUATORS