F-B90

The F-B90 multiblade fire damper is designed to divide fire compartments and prevent the spread of toxic gases, smoke and flames. The F-B90 fire damper is an element of passive fire protection. The F-B90 fire damper is classified and certified with EIS criteria according to EN 1366-2. The fire resistance rating depends on the type of damper and the installation method.

The F-B90 multiblade fire damper with grilles on both sides is designed for fixed installation in the fire partitioning structure without air duct connection. The F-B90 multiblade fire damper without grilles is designed for installation in ducts.

The F-B90 fire damper is available with manual operation or with actuator.

Catalogue of the product series: F-B90-en.pdf. Declaration of performance of the product series: F-B90_declaration-of-performance.pdf. 

F-B90 fire damper with manual operation
The trigger mechanism of the F-B90 fire damper is activated when the ambient air temperature reaches 74 °C. In the event of a fire, the damper closes automatically within 10 seconds after the thermal fuse has melted. Once the damper is closed, the blades remain locked in the closed position and can only be opened manually. On request, the fire dampers can be supplied with limit switches to signal the position of the blades.

F-B90 fire damper with actuator
The F-B90 fire damper with actuator closes on a signal from the building management system (BMS) or when the temperature exceeds the thermoelectric temperature sensor, which is standard on every damper. If the temperature exceeds 72°C, the actuator power circuit is interrupted and the spring closes the damper blades within 20 seconds.

F-B90 damper types
• 00
Damper without protective grilles designed for installation in ducts.
• 01 or 02
Damper fitted with a protective grille on one side, version 01 (grille in galvanised steel sheet) or 02 (grille in white powder coated RAL 9003). The grille can be fitted on either side of the damper.
• 11 or 22Damper fitted with protective grille on both sides, version 11 (grille in galvanised steel sheet) or 22 (grille in white powder coated RAL 9003). Serves as a wall fire grille without connected ducts. This type of damper can be supplied equipped with a smoke detector.

Types of F-B90 damper actuation mechanisms
• H0
Basic damper design, manual activation mechanism with return spring and fusible thermal fuse set at 74°C.
• H2
Manual activation mechanism H0 + indication of open and closed position by 230V AC or 24V AC/DC limit switches.
• B230T or G230T
Activation mechanism with Belimo (B230T) or Gruner (G 230T) actuator with return spring, also equipped with thermoelectric actuation sensor with activation at 72°C. The actuator also includes limit switches with damper blade position indication. Power supply 230V AC.
• B24T or G24T
Actuation mechanism with Belimo (B24T) or Gruner (G24T) actuator with return spring, also equipped with thermoelectric actuation sensor with activation at 72°C. The actuator also includes limit switches with damper blade position indication. Power supply 24V AC/DC.
• BST0 or GST0
Activation mechanism with Belimo actuator (BST0, 24V AC/DC, power supply via 230V AC communication unit) or Gruner actuator (GST0, 24V AC/DC, power supply via 24V AC communication unit) with return spring, also equipped with thermoelectric actuation sensor with activation at 72°C. The actuator also includes limit switches with damper blade position indication. Power and communication units Belimo BKN 230-24 or Gruner fs-UFC230-2.
• B24T-SR or G24T-SR
Activation mechanism with Belimo (B24T-SR) or Gruner (G24T-SR) actuator with spring return and 0-10V control (possibility of setting the blade position in any position), also equipped with thermoelectric trigger sensor with activation at 72°C. The actuator also includes limit switches with signaling of the damper blade position. Power supply 24V AC/DC.
• BSD230T or GSD230T (only for dampers with grilles on both sides, i.e. type 11 and 22)
Activation mechanism equipped with a smoke detector with Belimo (BSD230T) or Gruner (GSD230T) actuator. The servo drives are powered by 24V AC/DC via a 230V AC powered communication unit. The servo drive is equipped with a return spring and thermoelectric actuation sensor with activation at 72°C. The actuator also includes limit switches with signaling of the damper blade position.Note: Actuators with smoke detector can only be supplied for dampers with grilles on both sides, i.e. types 11 or 22.
• BSD24T or GSD24T (only for dampers with grilles on both sides, i.e. type 11 and 22)
Activation mechanism equipped with a smoke detector with Belimo (BSD24T) or Gruner (GSD24T) actuator. The actuator power supply is 24V AC/DC. The actuator is equipped with a return spring, thermoelectric actuation sensor with activation at 72°C, the actuator also includes limit switches with signaling of the damper blade position.Note: Actuators with smoke detector can only be supplied for dampers with grilles on both sides, i.e. types 11 or 22.