Fire damper BKP-EN
Technical documentation
Spring return actuators
Construction subject to change.
No return possible!
Version: 2020-09-01 | Page 30
Spring return actuator B42
B42
(BF24TL-TN-ST SO; Top Line)
Figure 35: Connection diagram B42
Electric spring return actuator with thermoelectric release de-
vice BAT72TL.
Trigger temperature (duct inside temperature) 72
°C optionally 95 °C (for hot-air heating).
Supply voltage 24 V AC/DC including connector.
Connection to Belimo MP bus systems is possible via
communication and power supply unit BKN230-
24MP.
Further technical information available upon request.
Spring return actuator ExMax-5.10-BF
ExMax-5.10-BF (
X10 - X15
)
Explosion-protected electric spring return actuator with
safety temperature limiter (FireSafe or ExPro-TT).
Trigger temperature (duct inside temperature) 72
°C optionally 95 °C (for hot-air heating).
Operating position (damper OPEN) and tensioning
of the return spring by applying the supply voltage
(universal power supply 24 - 240 VAC/DC).
Safety position (damper CLOSED) through spring
force when supply voltage is interrupted or the tem-
perature fuses (ambient temperature or internal
duct temperature) respond. A response of the ther-
mal fuses will interrupt the sensor circuit perma-
nently and irrevocably.
End position signalling by integrated auxiliary
switches, switching at an angle of rotation of 5° and
85°.
An on-site functional check is possible by means of
the control key of of the safety temperature limiter
ATTENTION!
Safety function is only guaranteed if the actuator has been
connected to the supply voltage in accordance with regula-
tions and unlocked mechanically.
Further information can be found in the additional BKP-EN op-
erating instructions according to ATEX 2014/34/EU.
