Hvac Klimaoprema FDC25, Technical Manual

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1. Galvanized steel casing

2. Fire resistant damper blade

3. Control mechanism

4. Intumescent joint

5. Connection flanges

6. Product marking on the casing

7. Thermal fuse

1. PRODUCT PRESENTATION

Fire dampers FD25/FD40 are installed in ventilation ducts between fire compartments in order to stop the spread of 

fire and smoke trough the duct. They have a modular (manual or magnet) or motorized mechanism, entirely outside 

the wall.

Casing is made out of galvanized steel sheet, damper blade is made of special insulating material, and damper blade 

shaft and push rod are made of stainless steel. Bearings are of brass, seals of polyurethane and elastomer.

The fire damper can be equipped with a simple mechanism with thermal fuse, or with solenoid actuator mechanism 

or with electric actuator mechanism.

• Tested according to EN 1366-2 up to 500 Pa

• Airtightness according to standard EN 1751 class C

• Approved for installation in a concrete wall, a concrete slab, plasterboard wall and gypsum blocks wall

• Operating mechanism completely outside the wall

• Easy to install

• Maintenance free

2. DIMENSIONAL RANGE

Free area for

 Ø 100 to Ø 315 (blade 25 mm) = [(π x (Ø-3)² / 4) – 25 x (Ø – 5)] / 10 000 with Ø in mm

Free area for

 Ø 350 to Ø 800 (blade 40 mm) = [(π x (Ø-3)² / 4) – 40 x (Ø – 5)] / 10 000 with Ø in mm

3. DIMENSIONS

FDC25

FDC25-R / FDC40-R

 380 

n 

 Y 

 A

 C

 D 

  n/2+12 

  n/2+22 

 E 

 C

 A

 380 

 220 

 Y

n 

 A

 C

 D

n/2+12 

n/2+22 

 E

 D

Lenght of damper blade outside of casing 

(Y dimension on front side and X dimension on back side)

X=(Dn/2)-270 (mm)

Y=(Dn/2)-110 (mm)

Product

A

C

D

E

Belimo

BFL (M)

25

200

90

120

BFN (M)

25

225

100

120

BF (M)

50

250

100

120

Klimaoprema

-R (FD 25 & FDC 25)

55

150

105

150

-R (FD 40 & FDC 40)

55

200

105

200

-EMS/EMP (FD 25/40 & FDC 25/40)

55

200

105

200

Dimensioni (mm)

Sezione lorda (dm²)

Sezione netta (dm²)

FDC25

100

0,74

0,50

125

1,17

0,87

160

1,93

1,55

200

3,05

2,56

250

4,79

4,18

300

6,18

5,74

315

7,64

6,87

FDC40

355

9,73

8,33

400

12,37

10,79

450

15,69

13,91

500

19,39

17,41

630

30,86

28,36

710

39,24

36,42

800

49,86

46,68