ER (BLF)
ER (BLF-T)
Conceptual diagram of electric installations for valves in the ER version with BLF actuator
4.6.
EXEMPLARY SYSTEMS FOR FIRE VALVE CONNECTIONS IN SIGNALLING AND
CONTROL SYSTEMS
If, in the rooms ventilated, there is fire alarm installation, it is recommended that the actuator of the ER
fire valve and the solenoid of MR fire valve should be powered via contact controlled directly from the
fire safety unit.
4.6.1. Diagram of connections of the actuator of fire valve version ER.
Legend for connections of control and signalling circuits:
Signalling of fire valve closure – circuit “a" (lamp, switch, sound
alarm, switching off the ventilation).
Signalling of fire valve opening – circuit “c" (lamp, switch,
ventilation switched on).
Control of fire valve opening (lamp)
In the case of connecting BLF24-ST or BF24-ST actuators via
BKN230-24, connect clamps 1 and 3 of thermal element with
limit switch to clamps 1 and 2 on the BKN230-24 device (in
place of the keeper, which must be removed).
4.6.2. Diagram of connections of solenoid of fire valve version MR for installation powered with
24/48V DC
Legend for connections of control and signalling circuits:
Signalling of safety thermal element actuation – circuit “a" (lamp,
switch, sound alarm, switching off the ventilation).
Signalling of fire valve closure – circuit “b" (lamp, switch, sound
alarm, switching off the ventilation).
Signalling of fire valve opening – circuit “c" (lamp, switch,
ventilation switched on).
Solenoid conductor in the MR version must be connected to closed contact in the electrical thermal
element.
Control cabinet
Control cabinet
Thermal
element
actuator
actuator
24/48V DC
or 230V
AC
24/48V DC
or 230V AC
Control cabinet
actuator
24/48V DC or
230V AC
Control cabinet
thermal el.
solenoid
Limit
switch
conductor ‘1’
24/48V
DC or
230V
AC
