Systemair EFD 50-30 Damper cl.3 + TF24

Shutter damper with spring-return actuators (24V)

Shutter damper EFD is a shut-off damper. The damper is provided with 24 V motors with spring-return actuators. EFD is manufactured to leakage performance class 3 according to EN 1751:1998 Annex C.2. Outdoor/exhaust air damper has the function to prevent the hot water battery from freezing and also prevent the cold air from cooling down

the building if the unit stops.

Design

The EFD multi-leaf damper comprises a number of opposed blades, swivelling on nylon bearings in a sheet metal framework. The blades are connected via a system of linkages (protected) on the outside of the frame. Maximum air temperature is 100°C.