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| Round fire damper manual 02/2021
SOLID AIR ®
CLIMATE SOLUTIONS
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T +31 598 36 12 21
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www.solid-air.com
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Length of damper blade outside of casing (Y dimension on front side)
FDC 25/40
Y=(Ø d/2)-110 [mm]
*If the damper is larger than Ø 540 mm, use formula (X dimension on back side)
FDC 40 (> d540) X=(Ø d/2)-270 [mm]
FDC25-M
FDC40-M
Ø d (mm)
100
125
160
200
250
315
355
400
450
500
630
710
800
Weight (kg)
4.5
4.9
5.4
6.1
7
8.4
11.7
13.3
15.2
17.3
23.4
29.1
35.1
Servomotor
type
BFL
BFL
BFL
BFL
BFL
BFL
BFN
BFN
BFN
BFN
BFN
BF
BF
380
Ød
C
A
D
Y
Ød/2+12
E
C
A
Ød/2+12
FDC25 / FDC40-M
(electric actuator)
• Thermoelectric release device (72 °C) with electric
actuator and return spring.
• Integrated end switches.
• Fully automatic operation.
• Optional 95 °C thermoelectric release device for
warm air installations (see pg. 53 Accessories).
Product
A
[mm]
C
[mm]
D
[mm]
E
[mm]
BFL (M)
25
200
90
120
BFN (M)
25
225
100
120
BF (M)*
50
250
100
120
