EFD 80-40 4800 cl.3+LF24

Art. no.: 6909

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.

Technical parameters

Nominal data
Voltage (nominal) 24 V
Frequency 50; 60 Hz
Input power 5 W
Protection/Classification
Enclosure class IP54
Ambient and duct temperature
Permitted ambient temperature -30 to 50 °C
Dimensions and weights
Duct dimension, inlet (height x width) 400 x 800 mm
Duct dimension, outlet (height x width) 400 x 800 mm
Weight 8.82 kg
Others
Duct connection type Rectangular

Pressure drop

Images Performance - EFD 80-40 4800 cl.3+LF24 - systemair

 

 

Airflow

Images Dimensions - EFD 80-40 4800 cl.3+LF24 - systemair
A B

800

400