HVC | NCA Series 100 Fire Dampers

NCA manufacturing
product catalogue
You may never need a 6 hour rated fire damper but it is
comforting to know that SERIES 100 curtain fire dampers have
been independently certified for 6 hour integrity as standard (as
have most of the fire dampers in our range). There is no premium
to pay for this higher integrity and exceptional quality, we simply
offer this as a value added benefit. NCA fire dampers are
probably the best value for money in the field of fire protection.
There is no need to select different models for vertical or
horizontal application since powerful stainless steel torsion
springs are fitted to all SERIES 100 dampers which guarantees
closure in any plane.
However, if it is high pressure system you are fitting the NCA
SERIES 100 is still the solution as it has also been tested to
BS1366-2 (ISO10294-1) for the maximum 4 hours at 300 Pascal’s.
This gives the best of both worlds and the maximum protection
available from a curtain damper.
A complete range of options and accessories allows optimum
configuration for any application.
Tested to the latest BS1366-2 (ISO10294-1) for the maximum
4 hours at 300 Pascal’s by the Building Research Establishment.
Endurance Tested to BS476-20 by Warrington F.R.C. for
6 hours with guaranteed closure in both vertical and
horizontal plane.
Series 100 Fire Damper, Model A, shown
with optional accessories: resettable link
mechanism, stainless steel jamb seals, pull
rings and visual position indicator. A wide
range of options and accessories are
available to meet specific applications.
Fire Dampers - Series 100
Series 100 Fire Dampers
Casing manufactured in accordance with DW144 requirements.
Precise roll formed construction, with fully interlocking blades.
Choice of galvanised or stainless steel casing and blades.
Stainless steel springs as standard.
Resettable link mechanisms for periodic testing.
Blade status indicators
(either mechanical or micro switches).
All series 100 fire dampers can be supplied with HEVAC/HVCA
installation frames fitted by NCA. In accordance with
HEVAC 6/5/83 rev 1 2002.
MODEL A
Square / rectangular
spigoted, blades
partially in air stream.
MODEL B
Square / rectangular
spigoted, blades out
of airstream.
Models
MODEL C
Circular spigoted
blades out of
airstream.
MODEL D
Flat oval spigoted
blades out of airstream.
Selection Guide
Model
Face
Velocity Range
A
B
C
D
Square or Rectangular
Square or Rectangular
Circular
Flat Oval
Low
Medium - High
Low - High
Low - High
Size mm (Single
Minimum
W
H
100 x 100
100 x 200
100 Ø
100 x 100
Section)
Maximum
W
H
1250 x 1000
1250 x 1000
1000 Ø
1250 x 1000
nca manufacturing sales & enquiries - telephone: 00 44 (0)1384 376555 eMail: sales@h-v-c.com
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Fire Dampers - Accessories
Resettable Fusible Link System:
Fire dampers should be periodically tested to ensure free
movement of all moving parts and to ensure the blades
latch securely in the closed position. To assist this test
procedure, we offer our resettable link system which allows
the damper to be released and reset with the minimum of
time and effort. Anti-creep links available.
Visual Position Indicators: (Series 100 Only)
Our visual indicator (VPI) provides for local indication of the
damper blade position viewed from outside the duct. This
can be of great assistance when inspecting the duct
system during balancing or periodic testing for fire safety.
Micro Switches:
Available for remote blade position indication (either
normally open or closed circuits).
Electro Magnets:
Available for systems which require the dampers to close
upon de-energising the power supply (24V AC, 110V AC,
230V AC).
(Minimum height of damper when square 200mm)
(Minimum height of damper when circular 250mm)
Solenoids:
May be provided on dampers to release the damper upon
a signal from a detector or central control panel. (24V DC,
24V AC or 240V AC available).
(Minimum height of damper 200mm).
Fusible Links: Available in various temperature ratings.
Standard rated at 72°C.
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nca manufacturing sales & enquiries - telephone: 00 44 (0)1384 376555 eMail: sales@h-v-c.com
NCA Fire Dampers (series 100 and 200) have been tested
to British Standard 1366-2:1999 and International Standard
ISO 10294-1:1996(E) by BRE, Garston, Watford, Test
Report No’s. 232943 and CC235890. This testing was
successful in excess of the maximum required 240 minutes.
Additionally, all NCA Fire Dampers (series 100, 200 and
300) have been tested by Warrington Fire Research
Centre to British Standard 476 Part 20 criterion 7.1.1 for a
full 6 hours.
Revalidation Report No. WFRC151309.
Test construction after 240 minutes.
Fire Dampers - Performance
Fire Tests
Face of Damper Curtain after 240 minutes
Suitably withstanding 300 Pascal's.
Time/Temperature Curve
Pressure Differential across damper.
nca manufacturing sales & enquiries - telephone: 00 44 (0)1384 376555 eMail: sales@h-v-c.com
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Fire Dampers - Performance
Pressure Losses
Any devices installed in a duct system must necessarily
interfere with air flow, and affect pressure losses. An
efficient design should minimize this effect without
compromising its function. It is therefore important for
designers of air handling systems, to evaluate such losses
to ensure allowance for this resistance factor, when sizing
their duct systems. The most important factor
influencing pressure loss across fire dampers, is
the effective free area. The graph below indicates
the losses at different air velocities imposed by a
typically sized damper (aspect ratio 1:1) of
600mm x 600mm.
Corrosion
NCA fire dampers (series 100, 200 and 300) have
successfully passed salt spray corrosion tests. The
dampers were installed in a test chamber and exposed to
a 20% salt spray (sodium chloride and distilled water) for
120 hours. At the conclusion of this exposure period, the
dampers were removed from the test chamber
and the fusible links were subjected to flame. The
dampers then successfully closed and latched
securely.
Reliability Tests: Closing, Spring Cycling and Dust Loading.
In addition to the tests described above, NCA dampers
have also undergone a series of reliability tests. All models
have been successfully cycled 250 times without failure.
The stainless steel negator springs have been cycled 5000
times without failure. The dampers have also been
evaluated after dust loading. This test is designed to
simulate the build up of dust and other airborne particles
which occur in duct systems over long periods of time.
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These particles may inhibit the positive closure of
fire dampers. Sample dampers were exposed to a
circulating grain dust air mixture. The particles are
allowed to accumulate on the various parts of the
dampers after which the dampers were removed
from the chamber and successfully tested for
closing and latching.
nca manufacturing sales & enquiries - telephone: 00 44 (0)1384 376555 eMail: sales@h-v-c.com
The purpose of an installation frame is to ensure the
integrity of the fire partition opening by assisting the
duct and its associated damper to resist the severe
distortion which would occur in a fire. At the same time
it completely bonds the fire damper to the surrounding
masonry so that no break in the integrity of the opening
occurs around the periphery of the fixing. HVCA /
HEVAC installation frames are required on
installations subject to HVCA ductwork
specification DW 142. The design and
construction of the frame is generic and
manufacturers, including ourselves must
conform to a specific design, Spec. HVC 6/5/83
which covers dimensions and materials.
Fire Dampers
HEVAC / HVCA Installation Frame
Additional Note
(A) In brickwork or blockwork walls and floors the tabs shall
be bent out solidly and built into the mortar joints between
the brickwork or blockwork.
(B) In the case of reinforced or concentrate walls and floors,
the tabs shall be bent out and tied with wire to the
Adjacent frame assemblies must be separated by
builders’ work a minimum thickness of 225mm
(between installation frame upstand flanges)
unless approval has been previously obtained
from the authority.
reinforcing bars which will be deliberately left
protruding into the opening and then the gap
between the installation frame and the builders’
work backfilled with mortar or concrete on both
sides of the flange.
The frame shall be installed centrally in the
thickness of a brickwork or concrete surrounding
wall or floor. In the case of thick walls or floors, the
centre line of the frame must be at least 50mm
away from the nearest face of the wall or floor in
which the assembly is mounted.
nca manufacturing sales & enquiries - telephone: 00 44 (0)1384 376555 eMail: sales@h-v-c.com
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Damper with Installation Frame
58
25
25
58
Model A
25
25
25
25
50
75
100
125
84
109
134
159
Model B
58
25
45
58
84
109
134
159
Model C
45
58
Fire Dampers - Dimensional Data: Series 100
Standard Fire Dampers
Model D
58
84
109
134
159
45
58
45
All dimensions in mm
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nca manufacturing sales & enquiries - telephone: 00 44 (0)1384 376555 eMail: sales@h-v-c.com
Where multiple arrangements of fire
dampers are required, the installer
should submit his proposed
arrangement to the local building
authority for acceptance. Where
accepted, NCA will provide
(optional accessory) U-channel
sections of 1.2mm galvanised steel
for on-site installation (by others).
These channel sections may be
used for multiple assemblies of
spigoted dampers as shown
(forming 50mm x 50mm centre
mullions).
Vertical
Vertical arrangements of series 100 fire dampers may be assembled as
shown. The maximum duct size recommended is 3850mm x 3300mm.
Fire Dampers
Multiple Assemblies
Weight Chart (Kg) - Series 100 Fire Dampers Model A
Duct
Height mm 100
100
2
200
3
300
3.5
400
4
500
5
600
6
700
7
800
8
900
9
1000
10
Duct Width mm
200
3
3.5
4
5
6
7
8
9
10
12
300 400
4
5
4
5
4.5 5.5
5.5
6
7
7.5
8
8
9
9.5
10
10
11.5 12
13
14
500
6.5
7
7
7.5
8.5
9.5
10.5
12
14
15
600
7
8
9
10
11
12
13
14
15
16
700 800
8
9
9
10
9.5 10.5
11
12
12
13
13
14
14
15
15
16
15.5 17
17
18
900 1000
9.5
10
11
12
12
13
13
14
15
16
16
17
17
18
18
19
18
20
20
22
Horizontal
Horizontal arrangements of
series 100 fire dampers may be
assembled as shown. Maximum
duct size: 2082mm x 2082mm.
Notes:
1. The above values are approximate for estimate
purposes only.
2. For model B, multiply chart value x 1.30.
3. For models C&D, multiply chart value x 2.0.
4. For HEVAC frames model weight x 1.5.
Specification
Spigoted fire dampers shall be series 100 manufactured by
HVC Supplies Ltd. and shall be of roll formed steel
construction with a low profile hinge to maximise free area
(not less than 90%). Dampers shall be spring loaded with
stainless steel springs whether for vertical or- horizontal
installation. Such springs shall have satisfied the
requirements of a 5000 cycle test. Dampers shall be
certified as having a 6 hour integrity when tested in
accordance with BS476 part 20 and have similarly passed
specific and independent tests for salt spray (corrosion),
closing reliability, and dust loading.
In-duct fire dampers shall be series 200 manufactured by
HVC Supplies Ltd. and shall be of roll formed steel
construction with a low profile hinge to maximise free area
(not less than 90%). Dampers shall be spring loaded with
stainless steel springs whether for vertical or horizontal
installation. Such springs shall have satisfied the
requirements of a 5000 cycle test. Dampers shall
be certified as having a 6 hour integrity when
tested in accordance with BS476 part 20 and
have similarly passed specific and independent
tests for salt spray (corrosion), closing reliability,
and dust loading.
In-door fire dampers shall be series 300
manufactured by HVC Supplies Ltd. and shall be
of roll formed steel construction with a low profile
hinge to maximise free area (not less than 90%).
Dampers shall be certified as having a 6 hour
integrity when tested in accordance with BS476
part 20 and have similarly passed specific and
independent tests for salt spray (corrosion),
closing reliability, and dust loading.
nca manufacturing sales & enquiries - telephone: 00 44 (0)1384 376555 eMail: sales@h-v-c.com
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Options
Model
Size
Range
mm
A
100x100
to 1250
x1000
Material
HEVAC
Frame
All Galv
Const - G
Frame - H
B
C
100x100
to 1250
x1000
100 dia.
to
1000 dia.
Galv Case
SS Blade
-M
Blade
Status
Indication
Fusible
Link
oC
Jamb
Seals
None - 0
72 - 1
No seals
-N
All SS
Const*
Visual
Position
Indicator - 3
None - 0
Resettable
link -1
One Microswitch - 1
Two Microswitches - 2
Secondary
Release
Mechanism
SS Jamb
-Y
Electro
Magnet - 2
Solenoid
AC - 3
96 - 4
Solenoid
DC - 4
Pull Rings
-5
145 - 6
183 - 7
D
100x100
to 1250
x1000
* Subject to minimum quantity order. Please enquire.
Fire Dampers - Ordering Information
Series 100 Fire Dampers
Series 200 & 300 Fire Dampers
Series
Model
Size
Range
mm
200
A
100x100
to 1250
x1000
Options
Material
All Galv
Const - G
Galv Case
SS Blade
-M
B
300
A
100x100
to 1250
x1000
100x100 All Galv - G
to
1000x1000
Blade
Status
Indication
Fusible
Link
oC
None - 0
72 - 1
One Microswitch - 1
96 - 4
Two Microswitches - 2
145 - 6
183 - 7
None - 0
72 - 1
Jamb
Seals
No seals
-N
SS Jamb
-Y
Secondary
Release
Mechanism
None - 0
Resettable
link -1
Pull Rings
-2
No seals
-N
None - 0
1. All Series 100 & 200 Fire Dampers are supplied with SS springs & lock guides.
2. Series 300 Fire Dampers are gravity operated only and must only be applied in a vertical plane.
nca manufacturing sales & enquiries - telephone 00 44 (0) 1384 376555 email sales@h-v-c.com
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