AMT SINGLE DEFLECTION GRILLES - Madel

AMT SINGLE DEFLECTION GRILLES
The AMT series grilles are designed to be used in air-conditioning,
ventilation and heating.
They are mounted on walls or false ceilings.
The direction of the blades can be altered, making it possible to graduate
the extent, the height or the width of the air stream.
1 09/04

CLASSIFICATION
AMT Grilles with moveable parallel blades
in the larger size.
BMT Grilles with moveable parallel blades
in the smaller size.
MATERIAL
AMT-AN Extruded aluminium grilles.
AMT-N Galvanised steel grilles.
All grilles are provided with a seal on the
back of the frame in order that the
perimeter in contact with walls, ceiling,
ducts, etc... is airtight.
ADDITIONAL ACCESSORIES
SP Opposed blades damper to regulate
the air flow.
The damper is operated by an easily
accessible key inside the grille.
Constructed from electro-zinc steel,
painted in black colour.
The damper is held in place by “S”
springs.
SPM-A Operated by means of an
external key.
FD Flap damper with inclined moveable
control, constructed in galvanised steel
with black enamel.
2 09/04

FIXING SYSTEMS
(T) The grille is fixed in place with screws.
(S) The grille is fixed in place with clips
(standard supply).
It requires the CM mounting frame.
When assembling with the metallic frame,
measures H and L increase 8 mm.
(O) The grille is fixed in place by a hidden
screw.
It requires the CM mounting frame.
When assembling with the metallic frame,
measures H and L increase 8 mm.
FINISHES
Aluminium Grilles:
AA Anodised in matt silver.
M9016 Lacquer in white colour similar
to RAL 9016.
RAL… Lacquer in other colours (RAL
specifications).
Steel Grilles:
M9006 Lacquer in metallic grey colour,
similar to RAL 9006.
R9010 Lacquer in white colour RAL
9010.
RAL… Lacquer in other colours (RAL
specifications).
3 09/04

AMT SERIES
FREE FACE AREA m2.
L
H 100 150
100
0,006 0,009
150 0,009 0,015
0,012 0,020
200
250
300
350
400
450
200
0,013
0,021
0,027
250 300 350 400
0,017 0,020 0,024
0,026 0,032 0,037
0,035 0,042 0,050
0,016 0,025 0,035 0,044 0,054 0,063 0,073 0,082 0,092 0,101 0,111 0,130
0,019 0,030 0,042 0,053 0,064 0,076 0,087 0,098 0,109 0,121 0,132 0,155
0,023 0,036 0,049 0,063 0,076 0,089 0,103 0,116 0,129
0,026 0,041 0,056 0,071 0,086 0,101 0,117 0,132 0,147
0,029 0,046 0,064 0,081 0,098 0,115 0,132 0,150 0,167
450 500 550 600
0,027 0,031 0,034 0,038 0,041
0,043 0,049 0,054 0,060 0,066
0,057 0,064 0,072 0,079 0,087
0,143
0,162
0,184
700
0,049
0,077
0,102
0,156 0,183
0,178 0,208
0,202 0,236
800 900 1000
0,056 0,063 0,070
0,088
0,116
0,099
0,131
0,110
0,146
0,149 0,168 0,187
0,178 0,200 0,223
0,210
0,238
0,271
0,236
0,269
0,305
0,263
0,299
0,340
FREE VELOCITY, PRESSURE LOSS AND SOUND POWER LEVEL.
RECOMMENDED VELOCITY.
Vmin
m/s
2
Vmax
m/s
3.5
Determination of air flow.
Measuring the Vf in different points
of the grille, we find the Vfmed.
Q (l/s) = Vfmed (m/s) * Afree (m2) * 1000
Q (m3/h) = Vfmed (m/s) * Afree (m2) * 3600
CORRECTION FACTOR FOR Lwa1.
Afree m2 0,01 0,02 0,05 0,1 0,2
Lwa1(kf) -9 -6 -3 - +4
Weighted noise level related to
Afree = 0,1m2.
Lwa = Lwa1 + Kf
0,4
+7
Afree (m2)
DPt (Pa)
1
0.6
0.5
0.4
0.3
0.2
0.15
0.1
0.08
0.06
0.05
0.04
0,03
0,02
200
150
100
80
60
40
30
20
15
10
25
Vf (m/s)
1.5 2 3 4
150
300
250
200
500
400
2500
1800
1600
1300
1000
900
700
45
LwA1 [dB(A)]
30 35 40
50
3500
3000
5500
4500
5 6 7 8 9 10
8000
6500
10000
25% open
Q (m3/h)
50% open
100% open
CORRECTION FACTOR OF PRESSURE LOSS FOR
DIFFERENT BLADES POSITIONS.
Kp
0
1
DPt' = Dpt x Kp
22 45
1,28 1,5
5
4
3
2
1
1 1.5 2 3 4
Vf (m/s)
5 6 7 8 9 10
4
AMT-GR1-09/04

AMT SERIES
450
450
750
900
400
500
800
1000
350
350
400
500
700
300
300
450
700
900
THROW WITHOUT CEILING EFFECT.
250
200
150
400
600
700
250
300 300
500 400
600 500
800 600
1000 800
1000
AL 0,5 (m)
8
6,8
5,6
4,8
4 6,6
3,2
2,8
2,4
AL 0,3 (m)
13,3
11,3
9,3
8
5,3
4,6
4
2 3,3
1,6 2,6
AL 0,2 (m)
1,2
2
0,8
1,3
0,4 0,6
>800
Q ( m / h)
o
POSITION OF BLADES 0
WITHOUT CEILING EFFECT.
AL0,2
Lb = AL0,2 x 0,53
bv = AL0,2 x 0,12
bh = AL0,2 x 0,4
200 300 400 600 800
3
POSITION OF BLADES 0
WITH CEILING EFFECT.
AL'0,2 = AL0,2 x 1,33
Lb = AL0,2 x 0,7
Lb
AL'0,2
bh
bv = Al0,2 x 0,106
bh = Al0,2 x 0,53
o
Lb
AL0,2
bh
bv
20
17
14
12
10
8
7
6
5
4
100
200
250
300
400
600
1000
3
2
1
40 60 80 100
150
1000 1500 2000 3000
bv
Lb
Lb
CORRECTION FACTOR FOR POSITION OF BLADES.
CORRECTION FACTOR FOR POSITION OF BLADES.
AL0,2(22 ) = Al0,2 x 0,8
AL0,2(45 ) = Al0,2 x 0,5
AL0,2(22 ) = Al0,2 x 1,064
Lb(45 )= Al0,2 x 0,66
Lb(22 ) = AL0,2 x 0,53
Lb(45 ) = AL0,2 x 0,33
Lb(22 ) = Al0,2 x 0,7
Lb(45 )= Al0,2 x 0,44
bv(22 ) = Al0,2 x 0,096
bv(45 ) = Al0,2 x 0,06
bv(22 ) = Al0,2 x 0,08
bv(45 ) = Al0,2 x 0,054
bh (22 ) = Al0,2 x 0,48
bh(45 ) = Al0,2 x 0,6
bh(22 ) = Al0,2 x 0,64
bh(45 ) = Al0,2 x 0,798
5
AMT-GR2-09/04