Operation and Maintenance Manual
– SCD Smoke Dampers
Version 1
Date 04 2018
Page 8 of 81
Declared active areas for single leaf dampers
Po
s
it
io
n
Nom
in
a
l
d
im
e
n
s
io
n
s
SCD-2-P... damper with a straight base
SCD-2-S... damper with a sloping base
Base height [mm]
Base height [mm]
700
500
350
700
500
350
Deflectors
Deflectors
w [mm]
l
(hinges)
[mm]
no
yes*
no
yes*
no
yes*
no
yes*
no
yes*
no
yes*
Aa active area [m2]
Aa active area [m2]
12
1800
2800
3.33
3.38
3.18
3.28
3.07
3.18
3.33
3.48
3.18
3.43
3.02
3.33
13
1800
3000
3.56
3.62
3.40
3.51
3.29
3.40
3.56
3.73
3.40
3.67
3.24
3.56
14
2000
2000
2.60
2.72
2.48
2.64
2.40
2.52
2.52
2.76
2.36
2.72
2.16
2.68
15
2000
2400
3.12
3.26
2.98
3.12
2.88
3.02
3.02
3.31
2.88
3.26
2.69
3.22
16
2000
2500
3.25
3.35
3.10
3.25
3.00
3.15
3.15
3.45
3.00
3.40
2.80
3.30
17
2000
2800
3.64
3.75
3.47
3.64
3.36
3.53
3.58
3.86
3.42
3.81
3.19
3.70
18
2000
3000
3.90
4.02
3.72
3.90
3.60
3.78
3.84
4.14
3.66
4.08
3.48
3.96
19
2200
2200
3.10
3.29
2.95
3.19
2.86
3.05
3.00
3.34
2.76
3.29
2.52
3.24
20
2200
2400
3.38
3.59
3.22
3.43
3.12
3.33
3.27
3.64
3.06
3.59
2.80
3.54
21
2200
2500
3.52
3.69
3.36
3.58
3.25
3.47
3.41
3.80
3.19
3.74
2.97
3.63
22
2400
2400
3.63
3.92
3.46
3.80
3.34
3.63
3.46
3.97
3.23
3.92
2.94
3.86
23
2400
2500
3.78
4.08
3.60
3.90
3.42
3.78
3.60
4.14
3.36
4.08
3.06
4.02
24
2500
2500
3.94
4.25
3.75
4.13
3.56
4.00
3.69
4.31
3.44
4.25
3.13
4.19
25
2500
3000
4.73
5.03
4.50
4.88
4.20
4.80
4.50
5.18
4.20
5.10
3.83
4.95
26
3000
3000
5.49
6.03
5.13
5.94
4.77
5.85
4.95
6.21
4.50
6.12
4.05
5.94
* If the field is empty, a deflector is optional
4. TECHNICAL DESCRIPTION OF PRODUCTS
4.1.
DESCRIPTION/TYPES
SCD smoke dampers are rectangular in cross-section. They are available as single or
double leaf. The dimension range is specified in Tables 4 and 5.
The opening angle of a
single leaf damper is not less than 140°.
The opening angle of a double leaf damper is not less than 90°.
A profiled aluminium drainpipe is mounted on a straight or sloping base, made of
1.5 mm thick galvanised sheet metal. The purpose of the drainpipe is to drain the
condensation moisture created as the result of temperature difference on the inner surface
of the leaf. The drainpipe corners are sealed with silicone and secured with an aluminium
fitting.
The base is adapted for placing insulation material on its entire perimeter. It is
recommended to use mineral wool insulation, 50 mm thick. The insulation material should
be of A1 reaction-to-fire class and be characterised by high density (150 kg/m3 minimum)
and thermal insulation power (thermal resistance Ri = 1.25
m2∙K/W minimum).
Heat-transfer coefficient for the base insulated by means of 50 mm thick mineral wool
is U = 0.80 [W/m
2
K].
Moisture tightness is obtained by means of applying insulation with bituminous
materials or sheet-metal work, appropriate for the given roof structure.
The drainpipe is connected, alongside the longer side of the damper, by means of a
linear rack hinge, with an openable cover. The hinge is protected against unwanted
