hidria diffusers 07 2013

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.


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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 customers 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 customers 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 customers 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


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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D-55

39

A1D

H

D-55

D

39

A1

Size D (mm) A1 (mm) H (mm) OD-1 Aef (m)OD-2

Aef (m)

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 D-52 (mm) D+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+11

108

D+11

D+11

12

34

5

6

1

2

3

4

5

6

7 7

A x A 59

D

A1

D

A1

H1

h1

39

d

39H2

45

A x A d

12

34

5

6

1

2

3

4

5

6

7 7

A x A 59

D

A1

D

A1

H1

h1

39

d

39H2

45A x A 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 A1 H1 h1 H2 D d

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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d

H

D

D2

1

2

3

4

5

6

DH1

H d

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 D 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)


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


12

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) tLzt

Temperature 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 (m/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

tz (K) Temperature difference between supply and room air

tL (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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12

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)

Volum

e Q (m

)

Room

atte

nuat

ion

(dB(

A))

L L

vL

h

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 (m) calculated volume, depending on room reflectanceQ (m) 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)

tZ (C)

C

E

L(m)

vL (m/s)

Q (m3/h)

b0.2

L = C+ E

tL (C)

vL = 0.2 m/s

tL (C)

room attenuation diagram

Diagram for determination of vertical velocity

Max temperature quotient th/tz determined using the diagram 1 for temperature quotient:

Ldiagram = L + h

example

Given:Air flow: Q = 1000 m/h, L = 3 mAir jet velocity: VL = 0.3 m/sTemperature difference: tz = 5 C

Solution:From the diagram select the diffuser OD-1 size 4.

effective outlet velocity vef = 7.2 m/stemperatue quotient tL /tZ = 0.08temperature difference tL = 0.08 x 5 = 0.4 Cinduction i = 16width of the air jet b0.2 = 0.22 m


pcel (Pa) Pressure droplWa (dB(A)) Sound power levelNR Max. value according to ISO

72


L WA

(dB(

A))

N R =2

5

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

p

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 koliina zraka Q (m/h)

7

8

5

1600

2500

3000

2000

4000


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 (m/h)

Air j

et ve

loci

ty v L

(m/s

)

pcel

Sizing diagram for circular diffusers OD-2

Pressure drop diagram (Valid for volume control damper J2)


Q (m/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

tz (K) Temperature difference between supply and room air

tL (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

pcel (Pa) Pressure dropLWA (dB(A)) Sound power levelNR Border value according to ISO

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12

3

4

5

9

8

7

6

10

11

12

13

20

Volum

e Q (m

3 )

0.7 1 2 543

50

100

200

500

1000

2000

14

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

p

p cel

(Pa)


v L (m/s)

tL (C)

E v L=0.2m/s

L(m )

tL (C)

v L(m/s)

tL (C)

Q (m 3/h)

b 0.2

L=C+E

C

Diagram for approximate determination of room attenuation

Q (m) Calculated volume, depending on room reflectanceQ (m) Actual room volume



Pressure drop diagram (Valid for register J2)

example

Given:Air flow volume: Q = 1000 m/h, L = 2.4 mAir jet velocity: VL = 0.3 m/sTemperature difference: tz = 5 C

Solution:From the diagram select the diffuser OD-2 size 3.

Effective discharge velocity vef = 9.8 m/s

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H +

30

Mounting Direct mounting on a circular duct or hose without additional adjustment fittings.

table of dimensions:

Size D D1 D2 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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D2

D

H1

H d

1

1

2

2

3

3

4

4

5

6

Ordering key

Swirl diffusers OD-3n (air inlet on the side):

Size D D2 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 d D D1 d1 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



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


100

150

1

2222.2

27.8

2.0

1.0

0.30

0.20

0.10

0.7

0.3

100

20

10

3040

5060

80

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)

tL(C)

b0.2

v L(m/s)

tL(C)

Q (m 3/h)

tZ (C)

Diagram for the determination of technical characteristics at horizontal jets (sizes 100 to 500)


Q (l/s) Volume flow rateQ (m/h) Volume flow rateL (m) Distance LVef (m/s) Effective velocityVL (m/s) Air jet maximum velocity at throw distance Lpt (Pa) Pressure dropNR Boundary curve according to ISO

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VeS

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S,

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Ser

S,

Var

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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)

tL(C)

b0.2

v L(m/s)

tL(C)

Q (m 3/h)

tZ (C)

Diagram for the determination of technical characteristics at horizontal jets (sizes 630 to 900)


Q (l/s) Volume flow rateQ (m/h) Volume flow rateL (m) Distance LVef (m/s) Effective velocityVL (m/s) Air jet maximum velocity at throw distance Lpt (Pa) Pressure dropNR Boundary curve according to ISO

78


D-52

38

66

D-52

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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S,

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D2

60

D1

4

1

2

3

5

B

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 customers wish.

Component parts1. Housing with connection valve2. Disc control element3. Spring4. Holder5. Safety rope

Size B D D1 D2 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 (m)

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


315

0.20

1

t L

/ t 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

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: p = (p from diagram) x k3


Q (m/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 LtZ (K) Temperature difference between

supply and room airtL (K) Temperature difference between

room air and air jet temperaturep (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

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10.15

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

pQ 7

4 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

pQ

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 3

6

400

109

200

2421

0.3

0.5

LWA

pQ

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

pQ

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 LW

A

pQ

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

pQ

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

pQ

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


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


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 (m)KD-2

Aef (m)

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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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

h1 d

H245

A x A 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

h1 d

H245

A x A 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

h1 d

H245

A x A 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 d

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


Size D (mm)A

(mm)B

(mm)AKD-1N Aef (m)

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

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Ordering key KD-1, KD-2, AKD-1N with plenum box

Ordering key


KD-1A/F1/A/S/M/I Size 4

V2XV2V1XV1


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)



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


30

35

40

45

50

N R=3

0

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

p

p cel

(Pa)


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=3

0

Pres

sure

dro

p

p cel

(Pa)

Regu

latio

n se

t-up


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

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FUSe

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S,

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Wir

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UCt

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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


81

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

tLzt

Temperature 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)


vL (m/s)

tZ (C)

C

E

L(m)

vL (m/s)

Q (m3/h)

b0.2

L = C+ E

tL (C)

vL = 0.2 m/s

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 m/h, L = 4 mTemperature difference: tz = 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 tL /tZ = 0.080temperature difference tL = 0.080 x 5 = 0.4 Cinduction i = 18width of the air jet b0.2 = 0.33 m


Q (m/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 jetstz (K) Temperature difference between supply and

room airtl (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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Val

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Ven

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S,

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81

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


Thro

w di

stan

ce L

(m)

Air j

et ve

loci

ty v L

(m/s

)

Air flow volume Q (m 3/h)

tLzt

Temperature factor


Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-1B

90


81

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

tLzt

Temperature factor


Thro

w di

stan

ce L

(m)

Air j

et ve

loci

ty v L

(m/s

)



Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-1C

91

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81

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



Induction i


Thro

w di

stan

ce L

(m)


Air j

et ve

loci

ty v L

(m/s

)

tLzt

Temperature factor

Diagram for determining the size, induction and temperature of the air jet flow of the square diffuser KD-1D

92


27

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


3000

Air j

et ve

loci

ty v L

(m/s

)

Thorw distance L (m)

Thor

w di

stan

ce L

(m)

tLzt

Temperature 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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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

p

p t (P

a)

L WA

(dB(

A))


N R=2

5

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))

Volum

e Q (m

3 )

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 (m) calculated volume, depending on room reflectanceQ (m) actual room volume




pt (Pa) Pressure dropLWA (dB(A)) Sound power levelNR Max. value according to ISO

example

Max temperature quotient th/tz determined using the diagram 1 for temperature quotient:

Ldiagram = L + h

94


Type 1 Type 2 Type 3 Type 4

595

198

159

8079

15

198

159

8079

198

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 198 mm. Dispersing sheet steel and housing are coloured in black and perforated diffuser face in RAL 9010, or according to customers request.

Component parts:1. Perforated diffuser face2. Dispersing sheet steel3. Housing4. Inlet spigot5. Volume control damper

Type A B Aef (m)

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)


1 Dispersing sheet types234


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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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 (m/h) Air flow Q (m/h)

Pres

sure

dro

p (P

a)

example

Given data:Air flow volume: Q = 490 m/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: p = 24 Pa

Noise

level (

dB)

Noise

level (

dB)

96


48

D

39

30

9

9

A x A 59

H1

h1

40

d

B

B

6

4

6 4

48

d

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 D B d 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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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

315

400

250

200

100

125

160

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)

p cel

(m)

The diagrams serve to determine the pressure drop pcel, 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 m/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




K Plenum box

KD-16/K/M/I Size 100, 125, 160, 200, 250, 315, 400

The right for technical changes reserved.

98


99

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hidria diffusers 07 2013

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