Post on 16-Dec-2018
02Square diffusersCircular diffusers
64
Circular diffusers, Square diffusers
Circular and square diffusers are designed for supply and extract air. Due to high induction (mixing of supply and room air) they are suitable for larger temperature differences between the supply and room air. Diffusers have high capacity and low sound power level.
Circular diffusers, Square diffusers
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Circular diffusers, Square diffusers
Overview ■ Circular diffusers
Circular diffusers can be used for supply or extract air. Due to high induction (mixing of supply and room air) they are suitable for larger temperature differen-ces between the supply and room air. Diffusers have high capacity and low sound power level.
Steel circular diffusers OD-1, OD-2They consist of sheet steel, powder coated in RAL 9010. Upon customer’s request, they can be coloured in any RAL colour.
aluminium circular diffuser OD-3nDiffuser rings are made of sheet alumi-nium and regulation mechanism consist of steel. Diffuser is powder coated in RAL 9010. Upon customer’s request, they can be coloured in any RAL colour.
■ Square diffusers
Square diffusers are designed for supply and extract air. Due to high induction (mixing of supply and room air) they are suitable for larger temperature differen-tials between the supply and room air. Diffusers have high capacity and low sound power level.
Steel square diffusers KD-1, KD-2, KD-15, KD-16They consist of sheet steel, powder coated in RAL 9010. Upon customer’s request, they can be coloured in any RAL colour. Plenum box is made of galvanised sheet steel.
Perforated square diffusers
Square diffusers
Steel circular diffusers OD-1, OD-2
aluminium circular diffusers OD-3n
Circular diffuser OD-10
OD-1 OD-2
OD-3N
OD-10
KD-1 KD-2
KD-16KD-15
66
Circular diffusers, Square diffusers
Page
CirCUlar DiFFUSerS 68
Circular diffusers OD-1, OD-2 68
Circular diffuser OD-3N 75
Registers 79
Circular diffuser OD-10 80
SQUare DiFFUSerS 83
Square diffusers KD-1, KD-2 83
Square diffuser AKD-1N 85
Registers 88
Square diffuser KD-15 95
Square diffuser KD-16 97
Content
■ legend of symbols
INOXElement is intended to be built in the floor.
Element is suitable for the supply of warm air (heating).
The element is made of stainless sheet steel AISI 304.
AI Element is made of aluminium profiles, aluminium sheet or aluminium casting.
Element is intended to be built in the wall.
Element is suitable for the supply of cool air (cooling).
St MElement is made of steel sheet. Element is intended to be built in the ceiling or in the wall.
Element allows regulation by electric motor (Belimo electric motors).
RAL9010
FEU...
Element is powder painted in stan-dard RAL 9010 colour. Other desired colour is to be specified in the order.
Element for air conditioning of rooms with floor to ceiling heights room up to 4 m.
Element is intended for air filtration. The filter of class … is built in.
CDShady symbol means possibility of optional material, surface protection, motor version, …
Element for air conditioning of rooms with floor to ceiling heights from 6 to 15 m.
The possibility of the automatic selec-tion and calculation of the technical characteristics of grilles and difusers in regard to the given conditions with the assistance of the Klima ADE program.
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Circular diffusers, Square diffusers
D-55
39
A1D
H
D-55
D
39
A1
Size D (mm) A1 (mm) H (mm) OD-1 Aef (m²)
OD-2 Aef (m²)
1 192 244 30 0.0085 0.0090
2 248 300 45 0.0157 0.0167
3 304 356 60 0.0257 0.0282
4 360 412 75 0.0381 0.0422
5 416 468 90 0.0536 0.0618
6 472 542 98 0.0730 0.0812
7 528 598 112 0.0955 0.1037
8 584 654 126 0.1150 0.1235
Size ФD-52 (mm) ФD+11 (mm)
1 140 203
2 196 259
3 252 315
4 308 371
5 364 427
6 420 483
7 476 539
8 532 595
OD-1 and OD-2 dimensions
OD-1• Fixed diffuser rings• Central screw installation or fixing with
three peripheral screws• Peripheral foamy sealing strip• Registers J2, L2
OD-2• Fixed diffuser cone-form rings• Central screw installation or fastening
with three peripheral screws• Peripheral foamy sealing strip• Registers J2, L2
OD-1 in the plate• OD-1 in the plate 595x595• Sizes from 1 to 5 are available• Only installation with cross-bar is
possible• Plenum boxes are equal to those for
standard OD-1 corresponding nominal sizes
Dimensions of volume control dampers l2, J2 for OD-1 and OD-2
Circular diffusers ■ Circular diffusers OD-1, OD-2
St
RAL9010
CD
St
RAL9010
St
RAL9010
68
Circular diffusers, Square diffusersCircular diffusers
105
D+11φ
108
D+11φ
D+11φ
12
34
5
6
1
2
3
4
5
6
7 7
A x A 59
φ D
φ A1
φ D
φ A1
H1
h1
39
φd
39H2
45
A x Aφ d
12
34
5
6
1
2
3
4
5
6
7 7
A x A 59
φ D
φ A1
φ D
φ A1
H1
h1
39
φd
39H2
45A x Aφ d
Built-in duct Duct through the panel ceiling
installation of circular diffusers OD-1, OD-2
installation 7• Installation with crossbar.
Designation: OD-1/7, OD-2/7
installation 8• Installation on register fastened in the duct.
Register has three girders. Designation: OD-1/8-(l2, J2), OD-2/8-(l2, J2)
Size A Ф A1 H1 h1 H2 ФD Фd
1 280 244 210 125 200 204 123
2 325 300 240 137 200 260 158
3 390 356 290 167 240 319 198
4 390 412 290 167 240 370 198
5 590 468 325 177 240 430 248
6 590 542 325 177 240 488 248
7 590 598 325 177 240 540 248
8 815 654 450 250 300 596 313
installation of OD-1 and OD-2 with plenum box
installation X (without opening in the middle)• Direct installation in the ceiling with three screws
Designation: OD-1/X, OD-2/X
1. Plenum box2. Inlet spigot3. Perforated steel sheet
(supply only)4. Volume control damper (M)5. Cross-bar6. Circular diffuser OD-17. Adapter
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Circular diffusers, Square diffusersCircular diffusers
Ø d
H
Ø D
Ø D2
1
2
3
4
5
6
φ DH1
Hφ d
φ D2
6
1
2 34
5
Ordering key for OD-1, OD-2 with plenum box
1. Plenum box2. Inlet spigot3. Hanger4. Perforated steel sheet
(supply only)5. Plenum box grill6. Diffuser OD-1
round diffuser OD-1 (side and vertical air supply)
Size Ф D Ф d H H1 H2
1 204 123 210 125.5 210
2 260 158 245 143 245
3 319 198 285 163 280
4 370 198 285 163 280
5 430 248 335 188 330
6 488 248 335 188 330
7 540 248 335 188 330
8 596 313 400 220.5 395
Ordering key
OD-1 in the plate 595x595* (sizes from 1 to 5)L2 RegistersJ2
7 Installation with the cross-bar8 Installation on volume control damper fastened in
the ductX Three boreholes on the ring without central
borehole
OD-1 Diffuser typeOD-2
OD-1/7-J2 Size 2 / 600
* Only installation number 7 is enabled if OD-1 version is installed into the plate.
OD-1 in the plate 595 x 595* (sizes from 1 to 5)I5 Thermal insulation (PE), thickness 5 mm on the
outside of the plenum box
I9 Sound and thermal insulation (from -40 °C to 105 °C) thickness 9 mm on the outside of the plenum box (the material is synthetic rubber-based)
I19 Sound and thermal insulation (from -40 °C to 105 °C) thickness 19 mm on the outside of the plenum box (the material is synthetic rubber-based)
M Volume control damper
S Side entry spigotV Top entry spigot
Z Air supply (square plenum box)A Air exhaust (square plenum box)
ZR Air supply (round plenum box)AR Air exhaust (round plenum box)
OD-1 TypesOD-2
OD-1/Z/S/M/I Size 2 / 600
*Only central installation can be used when installing on a plenum box.
70
Circular diffusers, Square diffusersCircular diffusers
1
2
3
4
6
500
1500
1000
400
150200300
10 9 8 7 6 5 4 3 2
1
5
4
10
3
2
0.5
1
0.75
0.5
0.4
0.3
0.2
0.1
0.3
0.2
0.15
0.5 1 2 3 4 5 6 7 8 9 10
0.15 0.1 0.05 0.02
0.2
5 10 15 20 30
40
2500
7
8
52000
4000
3500
3000
Induction iEffective discharge air velocity vef (m/s)
Air flow Q (m3/h) tL
ztTemperature quotient
Thro
w di
stan
ce L
(m)
Air j
et ve
loci
ty v L
(m/s
)
Diffu
ser s
ize
Air jet width b0.2 (m)
Diagram for determining the size, induction and temperature of the air jet flow of the circular diffusers OD-1
Definition of symbols
Q (m³/h) Air flowL (m) Throw distance Vef (m/s) Effective discharge air velocityVL (m/s) Max. air velocity at the throw distance LVh (m/s) Vertical velocity at distance
h from ceiling by combining two counterdirectional air jets
Δtz (K) Temperature difference between supply and room air
ΔtL (K) Temperature difference between air jet and room temperature
i Induction ratio = total airstream volume flow/volume flow at diffuser discharge
b0.2 (m) Width of the air jet is measured at a distance from ceiling where air flow velocity is 0.2 m/s
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Circular diffusers, Square diffusersCircular diffusers
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0.7 1.0 2.0 3.0 4.0 5.0
20
50
100
200
500
1000
2000
Distance from opening (m)
Volume Q’ (m³)
Room
atte
nuat
ion
(dB(
A))
L L
vL
h
Δ tZ (°C)
vh (m/s)
0.1
0.8
0.2 0.3 0.4 0.5 0.7
1.0
1.5
2.0
0.2
0.3
0.4
0.5
0.6
0.70.8
Dist
ance
from
ceili
ng h
(m)
Vertical velocity vh (m/s)
Air jet velocity vL (m/s)
Q’ (m³) calculated volume, depending on room reflectanceQ (m³) actual room volume
The following data are necessary to calculate the volume Q’.
1. Normal rooms Q’ = Q2. Rooms with highly reflective walls Q’ = 0.5Q3. Rooms with absorption walls Q’ = 2Q
vL (m/s)
Δ tZ (°C)
C
E
L(m)
vL (m/s)
Q (m3/h)
b0.2
L = C+ E
Δ tL (°C)
vL = 0.2 m/s
Δ tL (°C)
room attenuation diagram
Diagram for determination of vertical velocity
Max temperature quotient Δth/Δtz determined using the diagram 1 for temperature quotient:
Ldiagram = L + h
example
Given:Air flow: Q = 1000 m³/h, L = 3 mAir jet velocity: VL = 0.3 m/sTemperature difference: Δtz = 5 °C
Solution:From the diagram select the diffuser OD-1 size 4.
effective outlet velocity vef = 7.2 m/stemperatue quotient ΔtL /ΔtZ = 0.08temperature difference ΔtL = 0.08 x 5 = 0.4 °Cinduction i = 16width of the air jet b0.2 = 0.22 m
Definition of symbols
Δpcel (Pa) Pressure droplWa (dB(A)) Sound power levelNR Max. value according to ISO
72
Circular diffusers, Square diffusersCircular diffusers
L WA (d
B(A))
N R =25
30
35
40
4525
30
35
40
45
2 3 4 5 6 10
25%
50%
100%
5
10
20
50
30
40
100Opened
Regu
latio
n se
t-up
Effective discharge air velocity vef (m/s)
Pres
sure
dro
pΔ
p cel
(Pa)
1.0
0.75
0.5
0.4
0.3
0.2
0.1
1
2
3
4
6
140200300400
500
600
800
1000
1400
3500
12345681012
7
6
5
4
3
2
1
Vpihovalna količina zraka Q (m³/h)
7
8
5
1600
2500
3000
2000
4000
Effective discharge air velocity vef (m/s)
Thro
w di
stan
ce L
(m)
Air j
et ve
loci
ty v L
(m/s
)
Diffu
ser s
ize
Supply air volume Q (m³/h)
Air j
et ve
loci
ty v L
(m/s
)
Δpcel
Sizing diagram for circular diffusers OD-2
Pressure drop diagram (Valid for volume control damper J2)
Definition of symbols
Q (m³/h) Air flowL (m) Throw distance Vef (m/s) Effective discharge air velocityVL (m/s) Max. air velocity at the throw distance LVh (m/s) Vertical velocity at distance
h from ceiling by combining two counterdirectional air jets
Δtz (K) Temperature difference between supply and room air
ΔtL (K) Temperature difference between air jet and room temperature
i Induction ratio = total air stream volume flow/volume flow at diffuser discharge
b0.2 (m) Width of the air jet is measured at a distance from ceiling where air flow velocity is 0.2 m/s
Δpcel (Pa) Pressure dropLWA (dB(A)) Sound power levelNR Border value according to ISO
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Circular diffusers, Square diffusersCircular diffusers
1
2
3
4
5
9
8
7
6
10
11
12
13
20
Volume Q
’ (m3 )
0.7 1 2 543
50
100
200
500
1000
200014
’
Soun
d at
tenu
atio
n L W
A (dB
(A))
Distance from diffuser (m)
LW
A(d
B(A))
100%
50%
25% Opened
45
40
35
30
N R =25
45
40
35
30
25
20
10
30
40
100
50
5
2 3 654 10
Regu
latio
n se
t-up
Pres
sure
dro
pΔ
p cel
(Pa)
Effective discharge air velocity vef (m/s)
v L (m/s)
ΔtL (°C)
E v L=0.2m/s
L(m )
ΔtL (°C)
v L(m/s)
ΔtL (°C)
Q (m 3/h)
b 0.2
L=C+E
C
Diagram for approximate determination of room attenuation
Q’ (m³) Calculated volume, depending on room reflectanceQ (m³) Actual room volume
The following data are necessary to calculate the volume Q’.
1. Normal rooms Q’ = Q2. Rooms with highly reflective walls Q’ = 0.5Q3. Rooms with absorption walls Q’ = 2Q
Pressure drop diagram (Valid for register J2)
example
Given:Air flow volume: Q = 1000 m³/h, L = 2.4 mAir jet velocity: VL = 0.3 m/sTemperature difference: Δtz = 5 °C
Solution:From the diagram select the diffuser OD-2 size 3.
Effective discharge velocity vef = 9.8 m/s
74
Circular diffusers, Square diffusersCircular diffusers
φφ
H +
30
Mounting• Direct mounting on a circular duct or hose without additional adjustment fittings.
table of dimensions:
Size ФD ФD1 ФD2 A H
100 98 225 165 30 67
160 158 291 223 34 73
200 198 378 302 38 77
250 248 454 368 43 86
315 313 537 441 48 94
355 353 624 518 53 98
400 398 704 588 58 125
450 448 788 662 63 133
500 498 872 736 68 145
630 628 1063 927 68 162
710 708 1180 1044 68 172
800 798 1323 1177 73 198
900 898 1470 1324 73 211
■ Circular diffusers OD-3n
• Dismountable and height adjustable diffuser core (two positions).
• Installation with a mounting base collar.• Two designs:
- aluminium sheet, painted in white RAL 9010,
- aluminium sheet, eloxal treated in natural aluminium colour.
applicationThe diffuser core has two setting positions. In the upper position, the jet is directed downwards, for warm air heating application; in the lower position, the jet is directed horizontally, for cooling applications. For duct cleaning, only the diffuser core is to be dismounted.OD-3N has a capacity to supply large volumes of air.
• Mounting on a circular duct – adjustment with a J2 adjustment fitting (for sizes 160 to 500).
AI
RAL9010
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Circular diffusers, Square diffusersCircular diffusers
φ D2
φ D
H1
Hφ d
1
1
2
2
3
3
4
4
5
6
Ordering key
Swirl diffusers OD-3n (air inlet on the side):
Size Ф D Ф D2 Ф d H H1
100 103 225 98 185 113
160 163 291 123 210 125.5
200 204 378 123 210 125.5
250 254 454 198 285 163
315 319 537 248 335 188
355 358 624 248 335 188
400 404 704 313 400 220.5
450 454 788 313 400 220.5
500 504 872 313 400 220.5
Size A H1 h1 Фd ФD ФD1 Фd1 H+30
100 230 185 112 98 103 225 — 97
160200
280 210 125 123163 291 154 103
204 378 194 107
250 390 290 167 198 254 454 244 116
315355
590 325 177 248319 537 309 124
358 624 349 128
400450500
590 390 210 313
404 704 394 155
454 788 444 163
504 872 494 175
1. Plenum box2. Inlet spigot3. Perforated steel sheet
(supply only)4. Volume control damper
(M)5. Circular diffuser OD-3N6. Adapter
1. Plenum box2. Inlet spigot3. Hanger4. Plenum box grill5. Perforated steel
sheet (supply only)6. Diffuser OD-3N
I5 Thermal insulation (PE), thickness 5 mm on the outsi-de of the plenum box
I9 Sound and thermal insulation (from -40 °C to 105 °C) thickness 9 mm on the outside of the plenum box (the material is synthetic rubber-based)
I19 Sound and thermal insulation (from -40 °C to 105 °C) thickness 19 mm on the outside of the plenum box (the material is synthetic rubber-based)
M Volume control damper in spigot
K Square plenum boxKR Round plenum box
J2 Register
OD-3N/J2/K/M/I Size 160
Mounting with a connection plenum box (for sizes up to 500):
76
Circular diffusers, Square diffusersCircular diffusers
100
150
1
2222.2
27.8
2.0
1.0
0.30
0.20
0.10
0.7
0.3
100
20
10
3040506080
23
45
68
8000
200
300400
500600
700800
9001000
2000
30004000
50006000
7000
150
250
350450
1500
25003500
4500
30,040,0
50,060,0
70,080,0
90,0100,0
150,0200,0
250,0300,0
350,0400,0
450,0500,0
600,0700,0
800,0900,0
1000,01200,0
1400,01600,0
1800,02000,0
8.010.012
2.5
3.0
1.0
1.5
2.0
2.5
3.0
3.5
4.04.55.0
6.0
7.0
8.09.0
10.0
15.0
20.0
25.0
1.5
100 200 315 400 500160 250 355 450
NR20
NR25NR30NR35NR40NR45
6.05.0
4.03.5
L(m
)
VL (m/s)
Boun
dary
curv
e ac
cord
ing
to IS
O
Q (l/s)
v ef(m
/s)
Q (m3 /h)
Pt (Pa)
Size OD-3N
L (m )
C
E
L=C+E
v L = 0.2 m/s
v L (m/s)
ΔtL(°C)
b0.2
v L(m/s)
ΔtL(°C)
Q (m 3/h)
ΔtZ (°C)
Diagram for the determination of technical characteristics at horizontal jets (sizes 100 to 500)
Definition of symbols
Q (l/s) Volume flow rateQ (m³/h) Volume flow rateL (m) Distance LVef (m/s) Effective velocityVL (m/s) Air jet maximum velocity at throw distance LΔpt (Pa) Pressure dropNR Boundary curve according to ISO
77
Ven
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Val
VeS
Cir
CUla
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Ser
S,
SQU
are
DiF
FUSe
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SWir
l D
iFFU
Ser
S,
Var
iaB
le S
Wir
l
DiF
FUSe
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SlO
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iFFU
Ser
S,
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nD D
UCt
DiF
FUSe
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air
DiS
PlaC
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Un
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Circular diffusers, Square diffusersCircular diffusers
15000
10000
8000
6000
5000
4000
3000
2500
2000
200
150
100
80
60
5045
40
38.5
4166.740003500
3000
2500
2000
1500
1000
800
600555.6
7.0
6.0
5.0
4.5
4.0
3.5
3.0
2.8
0.30
0.20
0.10
15.0
10.0
8.0
6.0
5.0
4.0
3.3
NR30
NR35
NR40
NR45
NR50
v ef(m
/s)
630 710 800 900
Q (l/s)
Q (m3 /h)
L(m
)
Pt (Pa)
VL (m/s)
Boun
dary
curv
e ac
cord
ing
to IS
O
Size OD-3N
L (m )
C
E
L=C+E
v L = 0.2 m/s
v L (m/s)
ΔtL(°C)
b0.2
v L(m/s)
ΔtL(°C)
Q (m 3/h)
ΔtZ (°C)
Diagram for the determination of technical characteristics at horizontal jets (sizes 630 to 900)
Definition of symbols
Q (l/s) Volume flow rateQ (m³/h) Volume flow rateL (m) Distance LVef (m/s) Effective velocityVL (m/s) Air jet maximum velocity at throw distance LΔpt (Pa) Pressure dropNR Boundary curve according to ISO
78
Circular diffusers, Square diffusersCircular diffusers
D-52
38
66
φ
D-52φ
40
■ registers
When adjusting the system, desired operating conditions are obtained by the means of ventilation elements control. Regi-sters are installed for additional air volume control, thus influen-cing air velocity and throw distance as well. Registers are made of galvanised sheet steel.
J2Register J2 has two separately adjustable deflector flaps. It is used to deflect and control air flow from the duct. Central installa-tion of circular diffuser on built-in crossbar is also possible.
l2Element without regulation facilities is designed for the central installation of circular diffuser. Crossbar is a component part of L2. Picture shows L2/8 – angle irons for duct installation.
79
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Ven
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Cir
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Circular diffusers, Square diffusersCircular diffusers
φ D2
60
φ D1
4
1
2
3
5
φ B
φ D
FC
s= -5
mm
s= +
5mm
Ordering key
■ Circular diffuser OD-10
applicationCircular diffusers OD-10 are designed for ceiling installation in rooms with heights from 2.6 to 4 m and temperature differen-ce between supply and room air of 10K.By rotating the central disc, the dischar-ge angle can be adjusted horizontally or vertically.
DescriptionDiffuser housing is made of sheet alumi-nium, valve disc of pickled sheet steel. Diffuser is powder coated in RAL 9010 or upon customer’s wish.
Component parts1. Housing with connection valve2. Disc control element3. Spring4. Holder5. Safety rope
Size ФB ФD ФD1 ФD2 C F Aef s = -5 Aef s = +5
80 197 78 128 163 25 20 0.00435 0.00498
100 215 98 146 181 25 20 0.00486 0.00556
125 249 123 180 215 25 20 0.00582 0.00666
160 308 158 204.5 264 35 25 0.01173 0.01236
200 364 198 260.5 320 35 25 0.01437 0.01514
250 444 248 306 390 45 30 0.02434 0.02507
315 535 313 397 481 45 30 0.03034 0.03119
aef Effective area (m²)
OD-10/1• Installation with fastening section
OD-10/2• Direct installation in the ceiling width screws
installation
Set-up of the next valve disc• Air jet direction by heating • Air jet direction by cooling
St
RAL9010
1 Installation with attaching section2 Direct ceiling installation
OD-10/1 Size 160
80
Circular diffusers, Square diffusersCircular diffusers
315
0.20
1
Δt L
/ Δt Z
2 3 4 5 8
Size
250
12510
0
20016
0
80
Distance L (m)
0.30
0.10
0.03
0.05
0.02
xQ
L
1.8 m
L
H
H1
A, B
tZ
vL
QtZ
tL
vH1
tL
Δ
Δ
Δ
Δ
Dim.S
Sizes80, 100, 125
Sizes160, 200
Sizes250, 315
Correctionfactor
5 1.05 1.04 1.03 k1
10 0.95 0.97 0.98 k1
5 -6.0 -5.5 -5.0 k2
10 2.0 1.5 1.5 k2
5 1.17 1.11 1.08 k3
10 0.90 0.92 0.94 k3
k1 Velocity corrections vH1 in vL: vH1 = (vH1 from diagram) x k1 vL = (vL from diagram) x k1
k2 Sound power corrections: LWA = (LWA from diagram) – k2
k3 Pressure drop corrections: Δp = (Δp from diagram) x k3
Definition of symbols
Q (m³/h) Air flowx (m) Horizontal distance to the wallH (m) Room heightH1 (m) Distance between the ceiling
and occupied zoneL (m) Throw distance (L = H1 + x)vL (m) Air velocity at the throw
distance LΔtZ (K) Temperature difference between
supply and room airΔtL (K) Temperature difference between
room air and air jet temperatureΔp (Pa) Pressure dropLWA (dB(A)) Sound power levelvH1 (m/s) Air velocity at the H1 distanceA, B (m) Distance between two diffusers
(by width and length)
81
Ven
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Ve
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Val
VeS
Ven
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Val
VeS
Cir
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Ser
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SQU
are
DiF
FUSe
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SWir
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Ser
S,
Var
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Wir
l
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Ser
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PlaC
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Circular diffusers, Square diffusersCircular diffusers
1
0.15
v H1 (
m/s
)
0.2
0.1
0.3
H=1 21.2 1.6
1.5 2 3 4
75
3141
15020
055
100 9
9
1418
31
v L (m
/s)
0.1
0.2
0.3
0.5
razdalja L (m)
LWA
ΔpQ 74
36 0.5
razdalja L (m)
0.15
0.1
0.3
0.2 200
21.5 3
300
41
400
v L (m
/s)
0.1
4
11
19
13
2215
0 0.3
0.2
H=1 1.61.2 2
45
v H1 (
m/s
)
5 6
LWA
ΔpQ
razdalja L (m)
v H1 (
m/s
)
0.15
0.1
1.5 2
H=1
0.2
0.3
21.2 1.6
v L (m
/s)
3 4 65
0.2
0.1
3330
040
57
500 36
400
109
200
2421
0.3
0.5
LWA
ΔpQ
razdalja L (m)
0.15
0.1
2
H=1
0.2
0.3
21.2 1.6
v L (m
/s)
3 4 65
0.2
0.1
1830
0
4156
800
14
400
52
200
107
0.3
0.5
v H1 (
m/s
)
7 8
600
3131
LWA
ΔpQ
razdalja L (m)
2
0.15
v H1 (
m/s
)
0.2
0.1
0.3
43 5 6 87
600
29
3642
1000
800
271200
6141
400
v L (m
/s)
0.1
0.2
0.5
0.3
1620
67
H=1 1.61.2 2 LWA
ΔpQ
59
H=1
Velikost 80
409
11
1450
18
4131
3375
100
1 1.5 2 3 4
razdalja L (m)
v L (m
/s)
0.1
0.2
0.3
0.5
v H1 (
m/s
)
0.1
0.2
0.3
0.15
1.2 1.6 2
LWA
ΔpQ
razdalja L (m)
1
0.15
0.2
0.1
0.3
v H1 (
m/s
)
1.6H=1 1.2 2
321.5 4
50
6410
0150
22
43
10
75
9
2616
3
v L (m
/s)
0.2
0.1
0.5
0.3
Velikost 100
LWA
ΔpQ
Distance L (m)
Distance L (m)
Distance L (m)
Distance L (m)
Distance L (m)
Distance L (m)
Distance L (m)
Size 125 Size 160
Size 200 Size 250
Size 315
technical data for horizontal discharge (central disc adjustment s = 10 mm)
Size 80 Size 100
82
Circular diffusers, Square diffusersCircular diffusers
D-55
39
AD
H
D-55
D39
A
595
D595
40
D-55
595
D 595
40
D-55
KD-1DKD-1A KD-1B KD-1C
Square diffusers ■ Square diffusers KD-1, KD-2
KD-1• Fixed diffuser rings• Central screw installation or fixing with
peripheral screws• Peripheral foamy sealing strip• Registers F1
KD-2• Fixed diffuser cone-form rings• Central screw installation or fixing with
peripheral screws• Peripheral foamy sealing strip• Registers F1
KD-1 in the plate• KD-1 in the plate 595x595• Sizes from 1 to 6 are available • Installation with cross-bar or installati-
on on the register fastened in the duct is possible
• Plenum boxes are equal to those for standard KD-1 corresponding nominal sizes
• Three mask types, depending to the air supply direction; two-, three- or four--way air supply
Dimensions table for KD-1 and KD-2:
Size D (mm)
A (mm)
H (mm)
KD-1 Aef (m²)
KD-2 Aef (m²)
1 186 240 40 0.0104 0.0119
2 244 298 50 0.0185 0.0203
3 299 353 50 0.0279 0.0293
4 354 408 80 0.0440 0.0498
5 410 464 80 0.0628 0.0710
6 439 493 120 0.0728 0.0872
7 539 593 120 0.1175 0.1330
8 565 619 120 0.1280 0.1410
types of diffuser faces
St
RAL9010
CD
St
RAL9010
St
RAL9010
83
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tin
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Val
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Cir
CUla
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iFFU
Ser
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are
DiF
FUSe
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SWir
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Ser
S,
Var
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Wir
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FUSe
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Ser
S,
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DiS
PlaC
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Circular diffusers, Square diffusers Square diffusers
D+18
105
D+18
108
D+18
Without central borehole
Built-in duct
Duct through the panel ceiling
Direct installation in the ceiling with four screws
installation of circular diffusers KD-1, KD-2
installation 7• Installation with crossbar
Designation: KD-1a/7, KD-2/7
installation 8• Installation on register fastened in the duct
Designation: KD-1a/8-F1, KD-2/8-F1
installation V1XDesignation: KD-1a/V1X, KD-2/V1X
installation V2XDesignation: KD-1a/V2X, KD-2/V2X
installation V1Designation: KD-1a/V1, KD-2/V1
installation V2Designation: KD-1a/V2, KD-2/V2
84
Circular diffusers, Square diffusersSquare diffusers
1 2
34
5
6
1
2
3
4
5
6
A x A 59
A1 x A1
H1
h1φ
d
H245
A x Aφ d
A1 x A1
adapter XXIX
KD-1 vel. 5
komora 390x390
adapter XXX
KD-1 vel. 6
komora 590x590
15
39
B
D
A
45
1 2
34
5
6
1
2
3
4
5
6
A x A 59
A1 x A1
H1
h1φ
d
H245
A x Aφ d
A1 x A1
adapter XXIX
KD-1 vel. 5
komora 390x390
adapter XXX
KD-1 vel. 6
komora 590x590
15
39
1 2
34
5
6
1
2
3
4
5
6
A x A 59
A1 x A1
H1
h1φ
d
H245
A x Aφ d
A1 x A1
adapter XXIX
KD-1 vel. 5
komora 390x390
adapter XXX
KD-1 vel. 6
komora 590x590
15
39
plenum box 390x390 plenum box 590x590
adapter XXIX adapter XXX
KD-1 size 5 KD-1 size 6
1. Plenum box 2. Inlet spigot3. Perforated steel sheet
(supply only)4. Regulation flap (M)5. Cross-bar6. Square diffuser KD-1, 2 or
AKD-1N
Size A A1 H1 h1 H2 Фd
1 230 240 185 112 200 98
2 280 298 210 125 200 123
3 325 353 240 137 200 158
4 390 408 290 167 240 198
5 390 464 290 167 240 198
6 590 493 325 177 240 248
7 590 593 390 210 300 313
8 590 619 390 210 300 313
installation KD-1, KD-2 and aKD-1n with plenum box
aKD-1n • They are made of aluminium sections• Fixed diffuser rings• Central screw installation or fixing with
peripheral screws• Peripheral foamy sealing strip• Registers F1
Size D (mm)
A (mm)
B (mm)
AKD-1N Aef (m²)
1 188 244 135 0.010
2 244 300 191 0.015
3 300 356 247 0.025
4 356 412 303 0.042
5 412 468 359 0.060
6 442 498 389 0.070
7 542 598 489 0.115
8 567 623 514 0.125
AI
Adapter is attached to the plenum boxes for sizes 5 and 6.
85
Ven
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tin
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Ven
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Cir
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Ser
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are
DiF
FUSe
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SWir
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Ser
S,
Var
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Wir
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FUSe
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Ser
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UCt
DiF
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air
DiS
PlaC
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Circular diffusers, Square diffusers Square diffusers
Ordering key KD-1, KD-2, AKD-1N with plenum box
Ordering key
KD-1DKD-1A KD-1B KD-1C
KD-1A/F1/A/S/M/I Size 4
V2XV2V1XV1
KD-1DKD-1A KD-1B KD-1C
KD-1 in the plate 595x595* (sizes from 1 to 6 only)F1 Registers
7 Installation with the cross-bar8 Installation on volume control damper fastened in the duct
V1 Boreholes in the middle of each side + central boreholeV1X Boreholes in the middle of each side – without central borehole
V2 Two boreholes on two sides + central boreholeV2X Two boreholes on two sides – without central borehole
A Four-way inletB Three-way inletC Two-way inletD One-way inlet – central installation is not possible
(KD-2: version A only)
KD-1KD-2
AKD-1N
KD-1A/8-F1 Size 4 / 600
* Only installations number 7 and 8 are enabled if KD-1 version is installed into the plate.
I5 Thermal insulation (PE), thickness 5 mm on the outside of the plenum boxI9 Sound and thermal insulation (from -40 °C to 105 °C) thickness 9 mm on the outside of the
plenum box (the material is synthetic rubber-based)
I19 Sound and thermal insulation (from -40 °C to 105 °C) thickness 19 mm on the outside of the plenum box (the material is synthetic rubber-based)
M Volume control damper
S Side entry spigotV Vertical entry spigot
A Exhaust airZ Supply air
F1 Registers F1
A Four-way inletB Three-way inletC Two-way inlet
(KD-2: version A only)
KD-1KD-2
AKD-1N
86
Circular diffusers, Square diffusersSquare diffusers
30
35
40
45
50
N R=30
35
40
45
50
L WA (
dB(A
)
20
30
40
50
60
100
150
1.5 2 3 4 5 6
25%50%
100%
Opened
Regu
latio
n se
t-up
Pres
sure
dro
pΔ
p cel
(Pa)
Effective discharge air velocity vef (m/s)
150
100
20
40
30
60
50
1.5 2 43 65
L WA (
dB(A
)
30
35
40
45
50
45
50
25%
50%
100%Opened
40
35
N R=30
Pres
sure
dro
pΔ
p cel
(Pa)
Regu
latio
n se
t-up
Effective discharge air velocity vef (m/s)
p cel (
Pa)
p cel
Pressure drop and room attenuation diagram – with plenum box
Pressure drop and room attenuation diagram – with plenum box and control damper M (valid for the F1 register)
87
Ven
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tin
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Val
VeS
Ven
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Val
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Cir
CUla
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iFFU
Ser
S,
SQU
are
DiF
FUSe
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SWir
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Ser
S,
Var
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Wir
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DiF
FUSe
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SlO
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Ser
S,
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UCt
DiF
FUSe
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air
DiS
PlaC
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Un
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SUPP
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Circular diffusers, Square diffusers Square diffusers
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000
Q (m /h)3
5 - 20 Pa
20 - 35 Pa
15 - 30 dB(A)
30 - 45 dB(A)
KD-1A
KD-1A/1
KD-1A/2
KD-1A/3
KD-1A/4
KD-1A/5
KD-1A/6
KD-1A/7
KD-1A/8
57
L x L
Dimensions table for registers to fit KD-1 and KD-2
Size L (mm)
1 140
2 196
3 252
4 308
5 364
6 394
7 494
8 519
■ registers
When adjusting the system, desired operating conditions are obtained by the means of ventilation elements control. Regi-sters are installed for additional air volume control, thus influen-cing air velocity and throw distance as well. Registers are made of galvanised sheet steel.
F1Register F1 is equipped with wide counter-directional blades, which can be moved by the screwdriver via the cogwheel. It is designed to control the air flow volume. The blades are made of PVC – black colour.
Fast selection diagram for square diffuser KD-1a
88
Circular diffusers, Square diffusersSquare diffusers
8
1
2
3
4
5
6
7
10 9 8 7 6 5 4 3 2
3000
5 10 20 30
0.5
0.2 0.1 0.05
1
1
2
3
4
5
6
7
100.2
0.15
0.3
0.4
0.1
0.2
0.3
2000
1500
1000
500
400
600
300 200
0.4
0.5
0.6
0.7
0.80.9
2 3 4 5 6 7 8 9 10
0.02
Induction iEffective discharge air velocity vef (m/s)
Size
tL
ztTemperature factor
Throw distance L (m)
Thro
w di
stan
ce L
(m)
Air j
et ve
loci
ty v L
(m/s
)
Air flow volume Q (m3/h)
Air jet width b0.2 (m)
vL (m/s)
Δ tZ (°C)
C
E
L(m)
vL (m/s)
Q (m3/h)
b0.2
L = C+ E
Δ tL (°C)
vL = 0.2 m/s
Δ tL (°C)
Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-1A
example:
Given:Air flow volume: Q = 790 m³/h, L = 4 mTemperature difference: Δtz = 5 °C
Solution:From the diagram select the diffuser KD-1 size 4.
Air jet velocity: VL = 0.31 m/seffective outlet velocity vef = 5 m/stemperatue quotient ΔtL /ΔtZ = 0.080temperature difference ΔtL = 0.080 x 5 = 0.4 °Cinduction i = 18width of the air jet b0.2 = 0.33 m
Definition of symbols
Q (m³/h) Air flowL (m) Throw distanceVef (m/s) Effective discharge air velocityVl (m/s) Max. air velocity at the throw distance LVh (m/s) Vertical velocity at distance h from ceiling by
combining two counterdirectional air jetsΔtz (K) Temperature difference between supply and
room airΔtl (K) Temperature difference between air jet and
room temperaturei Induction ratio = total airstream volume flow/
volume flow at diffuser discharge b0.2 (m) Width of the air jet is measured at a distance
from ceiling where air flow velocity is 0.2 m/s
89
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Circular diffusers, Square diffusers Square diffusers
8
1
2
3
4
5
6
7
5
0.2 0.1 0.05 0.02
10
3000
2000
2500
1500
1000
500
400
300200
600
700
800900
0.4
0.5
0.6
0.7
0.80.9
0.7
0.6
0.5
0.4
0.3
1
10 20 3015 252356789 4
1211109
1,5
2
2,5
3
3,54
4,55
6
78
0.3
0.2
2 3 4 5 6 7 8 9 10 110.2 0.1
SizeEffective discharge air velocity vef (m/s)
Induction i
Throw distance L (m)
Thro
w di
stan
ce L
(m)
Air j
et ve
loci
ty v L
(m/s
)
Air flow volume Q (m 3/h)
tL
ztTemperature factor
Air jet width b0.2 (m)
Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-1B
90
Circular diffusers, Square diffusersSquare diffusers
8
1
2
3
4
5
6
7
6
0.2 0.1 0.05 0.02
23456789101112
3000
2500
1500
1000
500
400
200
600700
800900
0.2 0.1
0.4
0.5
0.6
0.7
0.80.9
2
2,5
3
3,54
4,556
7
89
10
12
140.3
0.80.7
0.5
0.3
0.2
1,5
10 20 3015 25
300
1,5
2 2,5 3 3,5 4 4,5 5 6 7 8 9 10 11 12 13 14
8
0.6
0.4
2000
SizeEffective discharge air velocity vef (m/s)
Induction i
tL
ztTemperature factor
Throw distance L (m)
Thro
w di
stan
ce L
(m)
Air j
et ve
loci
ty v L
(m/s
)
Air flow volume Q (m3/h)
Air jet width b0.2 (m)
Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-1C
91
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Circular diffusers, Square diffusers Square diffusers
8
1
2
3
4
5
6
7
6
0.2 0.1 0.05 0.02
23456789101112
3000
2500
1500
1000
500
400
200
600
700
800900
0.5
0.6
0.7
0.80.9
2
0.3
1,2
1,0
2
10
20
15
300
1,5
8
2,5
3
3,54
4,55
6
7
89
10
12
140.2
0,3
3 4 5 6 7 8 9 10 11 12 13 14
25
30
1
Size
2000
0.10.4
0,9
0,75
0,6
0,45
Effective discharge air velocity vef (m/s)
Air flow volume Q (m3/h)
Induction i
Throw distance L (m)
Thro
w di
stan
ce L
(m)
Air jet width b0.2 (m)
Air j
et ve
loci
ty v L
(m/s
)
tL
ztTemperature factor
Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-1D
92
Circular diffusers, Square diffusersSquare diffusers
2
7
3
8
1
4
5
6
25 10 20 30
0.6
0.2 0.1 0.05 0.02
1
1
2
3
4
5
6
7
100.2
0.2
0.3
0.5
0.1
0.3
0.4
2000
1500
1000
500
400
600
300 200
0.4
0.5
0.6
0.7
0.80.9
2 3 4 5 6 7 8 9 10
2,533,544,55678
Size
Air jet width b0.2 (m)
3000
Air j
et ve
loci
ty v L
(m/s
)
Thorw distance L (m)
Thor
w di
stan
ce L
(m)
tL
ztTemperature factor
Air flow Q (m 3/h)
Effective discharge air velocity vef (m/s)Induction i
Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-2
93
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Circular diffusers, Square diffusers Square diffusers
0.1 0.2 0.3 0.4 0.5 0.7
0.8
1.0
1.5
2.0
Air jet velocity vL (m
/s)
0.8
0.7
0.6
0.5
0.4
Dist
ance
from
ceili
ng h
(m)
Vertical velocity v h (m/s)
0.3
Pres
sure
dro
pΔ
p t (P
a)
L WA(d
B(A))
Effective discharge air velocity vef (m/s)
N R=25
30
35
4025
30
35
40
45
2 3 4 5 6 10
25%
50%
100%
5
10
20
50
30
40
100Opened
Regu
latio
n se
t-up
45
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0.7 1.0 2.0 3.0 4.0 5.0
20
50
100
200
500
1000
2000
Distance from opening (m)
Room
atte
nuat
ion
(dB(
A))
Volume Q’ (m3 )
celp
Diagram for determination of vertical velocity
Pressure drop and room attenuation diagram – directly connected to the duct (valid for the F1 register)
room attenuation diagram
Q’ (m³) calculated volume, depending on room reflectanceQ (m³) actual room volume
The following data are necessary to calculate the volume Q’.
1. Normal rooms Q’ = Q2. Rooms with highly reflective walls Q’ = 0.5Q3. Rooms with absorption walls Q’ = 2Q
Definition of symbols
Δpt (Pa) Pressure dropLWA (dB(A)) Sound power levelNR Max. value according to ISO
example
Max temperature quotient Δth/Δtz determined using the diagram 1 for temperature quotient:
Ldiagram = L + h
94
Circular diffusers, Square diffusersSquare diffusers
Type 1 Type 2 Type 3 Type 4
595
φ198
159
8079
15
φ198
159
8079
φ198
1195
Ordering key
Dispersing sheet steel types
■ Square diffuser KD-15
applicationSquare diffusers are designed for supply and extract air applications in the rooms with floor to ceiling heights from 2.4 to 4 m. They can be installed in panel ceilin-gs why their dimensions fits the size of the ceiling panels. Inlet spigot dimensions are designed to fit standard duct sizes.
DescriptionSquare diffuser KD-15 consists of perfo-rated diffuser face and plenum box with inlet spigot. Dispersing sheet steel allows different discharge angles (one, two, three or four directions). KD-15/B has two inlet spigot ф198 mm. Dispersing sheet steel and housing are coloured in black and perforated diffuser face in RAL 9010, or according to customer’s request.
Component parts:1. Perforated diffuser face2. Dispersing sheet steel3. Housing4. Inlet spigot5. Volume control damper
Type A B Ф Aef (m²)
KD-15/A 595 595 0.13099
KD-15/B 595 1195 0.26308
St
RAL9010
I5 Thermal insulation (PE), thickness 5 mm on the outside of the plenum boxI9 Sound and thermal insulation (from -40 °C to 105 °C) thickness 9 mm on the outside of the plenum box (the material is synthetic rubber-based)
I19 Sound and thermal insulation (from -40 °C to 105 °C) thickness 19 mm on the outside of the plenum box (the material is synthetic rubber-based)
1 Dispersing sheet types234
M Volume control damper
A Size 595 x 595 mmB Size 595 x 1195 mmC Front plate 595 x 595 mm onlyD Front plate 595 x 1195 mm only
KD-15A/M/1/I
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Circular diffusers, Square diffusers Square diffusers
Open Open
Closed Closed
100 200 300 400 500 600 800 10003
5
10
20
30
40
60
80
100
150
200
20
25
30
35
40
45
50
55
60
200 400 600 800 1000 1200 1600 20003
5
10
20
30
40
60
80
100
150
200
2025
30
35
40
45
50
55
60
Pressure drop and sound power level diagram(Control flap angle: 90° – open, 0° – closed)
Diagram for determination of throw distance
Size 595x595 Size 595x1195
Pres
sure
dro
p (P
a)
Air flow Q (m³/h) Air flow Q (m³/h)
Pres
sure
dro
p (P
a)
example
Given data:Air flow volume: Q = 490 m³/h, L = 1.4 mMax. air velocity at the throw distance L: vL = 0.20 m/sSound power level: LWA = 44 dB(A)Pressure drop: Δp = 24 Pa
Noise level (d
B)
Noise level (d
B)
96
Circular diffusers, Square diffusersSquare diffusers
48
ΦD
39
30
9
9
A x A 59
H1
h1
40
φd
B
B
6
4
6 4
48
ød
39
30
9
9
■ Square diffusers KD-16
applicationKD-16 is a square air supply diffuser designed for installation in ceiling. Air is discharged into the room through side slots and through the diffuser perforated face panel.The air supplied through the face panel is mixed with room air outside the unit. The air jet discharged through side slots inducts the supplied air and room air mixture, thereby improving the spatial distribution of fresh air.
installationKD-16 diffuser is installed in the ceiling by simply connecting it directly to an air duct or on a plenum box.
DescriptionKD-16 square diffuser is made of a per-forated mask and a top connection. The entire diffuser is powder painted in RAL 9010 or in a customer specified colour.
nominal sizes and dimensions
Size ФD B Фd A h1 H1
100 98 300 98 230 112 185
125 123 300 98 230 112 185
160 158 300 123 280 125 210
200 198 400 158 325 137 240
250 248 595 198 390 167 290
315 313 595 248 590 177 325
400 398 595 313 590 210 390
St
RAL9010
97
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Circular diffusers, Square diffusers Square diffusers
100 200 300 400 500 600 800 1000 1500 200010
15
20
30
40
5060
80
100
150
200
250300
400
2
3
4
5
6
7
89
10
12
14
161820
100 200 300 400 500 600 800 1000 1500 2000
315400
250
200
100
125160
100
125
160
200
250
315
400
(dB(A
))
25
30
35
40
45
L WA
Air flow Q (m3/h) Air flow Q (m
Pres
sure
dro
p
Thro
w di
stan
ce L
(m)
3/h)
Δp c
el(m
)
The diagrams serve to determine the pressure drop Δpcel, noise level LWA and distance L, at which the air jet velocity is 0.20 m/s at a specified air flow rate Q.
Pressure drop determination diagram throw distance determination diagram
Ordering key
example
Q = 330 m³/hThe distance to the isovel 0.20 m/s, pressure drop and noise level are required.
Size 200 is selected.The values corresponding to the specified flow rate Q are determined from the diagrams:pcel = 32 PaLWA = 33,5 dB(A)L = 4.2 m distance, at which the air jet velocity is 0.20 m/h.
I5 Thermal insulation (PE), thickness 5 mm on the outside of the plenum box
I9 Sound and thermal insulation (from -40 °C to 105 °C) thickness 9 mm on the outside of the plenum box (the material is synthetic rubber-based)
I19 Sound and thermal insulation (from -40 °C to 105 °C) thickness 19 mm on the outside of the plenum box (the material is synthetic rubber-based)
M Volume control damper
K Plenum box
KD-16/K/M/I Size 100, 125, 160, 200, 250, 315, 400
The right for technical changes reserved.
98
Circular diffusers, Square diffusersSquare diffusers
99
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Circular diffusers, Square diffusers