4
with ExPro-TT thermoelectric activation device
(hereinafter only actuator).
After connection to supply 230V AC or 24V AC/DC the actuator moves the damper leaf to the
"OPEN" operating position and at the same time biases its return spring. As long as the actuator
is energised, the damper leaf is in the "OPEN" position and the return spring is preloaded. The
time for completely opening the damper leaf from the "CLOSED" position to the "OPEN" position
is approximately 30 sec. If the actuator's power supply is interrupted (loss of supply voltage,
activating the temperature sensor or by pressing the reset button on the temperature sensor), the
return spring moves the damper leaf to the emergency position "CLOSED. The time for moving
the leaf from the "OPEN" position to the "CLOSED" position is approximately 10 sec. If the supply
voltage is restored (the leaf can be in any position), the actuator starts moving the damper leaf
again to the "OPEN" position, but only if the temperature sensor has not been activated. The
sensor's temperature activation occurs when the temperature exceeds +72°C. Then the supply
voltage is permanently and irrevocably interrupted and the actuator moves the damper leaf to
emergency "CLOSED" position by means of a pre-loaded return spring.
a) by interrupting and re-applying the supply voltage, e.g. by a signal from the EFS.
b) directly on the built-in damper using the button on the temperature sensor (simulates fuse failure).
Using a special key (supplied with the actuator), the damper leaf can be manually adjusted to any
position and the position secured. Unlocking is done manually with a key or automatically by
applying the supply voltage.
manual and temperature (ZONE 1, 2) .02 II 2G
manual and temperature with limit switch ("CLOSED") (ZONE 1, 2) .12 II 2G
with actuator ExMax-15- BF AC 230V, with thermoelectric activation
ExPro-TT equipment (ZONE 1, 2) .42 II 2G
with actuator ExMax-15- BF AC/DC 24V, with thermoelectric activation
ExPro-TT equipment (ZONE 1, 2) .52 II 2G
Manual and thermal with two limit switches ("OPEN", "CLOSED") (ZONE 1, 2)
.81 II 2G
Fire dampers are suitable for installation in vertical and horizontal passages of fire dividing
structures. Penetrations regarding damper installation must be done in such a way that the
transfer of all loads from the fire dividing structures to the damper body is completely excluded.
The adjoining air duct must be suspended or supported in such a way that load transfer from the
adjoining duct to the damper flange is completely ruled out.
To ensure the necessary space for access to the control device, it is recommended that other
objects be at least 350 mm away from the control parts of the damper. At least one inspection
opening must be accessible.
The distance between the fire damper and the structure (wall, ceiling) must be at least 75 mm. If
two or more dampers are to be installed in one fire dividing structure, the distance between
adjacent dampers must be at least 200 mm.
