SP

AZR-3 AZR-4 JZR-6 OZR-1

PROTECTION LOUVRES, SUPPLY AIR/EXHAUST AIR TOWERS

Protection louvres

Supply air/exhaust air towers

PROTECTION LOUVRES

Protection louvres are installed in building fronts(in supply and exhaust air openings) as aprotection against the direct ingress of rain, birds,bigger insects etc. They are suitable for all lowpressure air-conditioning, heating and ventilation.They are made of galvanised steel or aluminiumin numerous standard or special dimensions.

SUPPLY AIR/EXHAUST AIR TOWERS

Air towers are used for the supply and exhaust ofair. Various construction types can be made ofdifferent materials and in different dimensionsaccording to the customer's request.

231

Protection louvres, Air Towers

Protection louvres Page

Supply air/exhaust air towers

EXTERNAL ELEMENTS

Aluminium protection louvres AZR-3 ....................................................................................................................................................................................232

Steel protection louvres JZR-5, JZR-6...................................................................................................................................................................................236

Supply air/exhaust air tower SP.............................................................................................................................................................................................240

Aluminium protection louvres AZR-4 ....................................................................................................................................................................................234

Circular protection louvres OZR-1.........................................................................................................................................................................................238

232

B2 = B1+10H2 = H1+10

25

H1 /

B1

28

H2 /

B2

H / B

H1/B

1

B = B1+25H = H1+25

25

H1 /

B1

28

H / B

35

ALUMINIUM PROTECTION LOUVRES AZR-3

Aluminium protection louvres AZR-3

Application:Aluminium protection louvres AZR-3 are suitablefor all low pressure air-conditioning, heating andventilation where supply and exhaust openingsrequire protection against the direct ingress ofrain, birds, bigger insects etc.

Description:Aluminium protection louvres AZR-3 are made ofextruded aluminium sections galvanised in naturalaluminium colour.They consist of supporting frame and speciallyshaped horizontal vanes and protection screen ofgalvanised wire. They feature esthetical externalappearance.

All combinations of B1 and H1 according to thetable of dimensions are possible.

Non-standard dimensions are available onrequest.

Standard sizes:

Installation types:

Protection louvre is fixed with screws directly onduct Designation : AZR-3

Protection louvre is fixed with screws to the built-in frame made of steel angle.Designation: AZR-3/2

100 150 200 250 300 400 500 600 700 800 900 1000 1100 1200200 250 300 400 500 600 700 800 900 1000 1100 1200

4 6 8 10 12 16 20 24 28 32 36 40 44 48

H1(mm)B1(mm)

n

Sizes AZR-3

n... number of vanes

B = B1+25H = H1+25

25

H1 /

B1

28

H / B

35

233

B3 = (2 x B1) + 56

B1 B1

B3

H / B

H1

H1

H3 = (2 x H1) + 56

B1

H1

H3 H / B

AZR-3/2B1 = 600 H1 = 3005

ALUMINIUM PROTECTION LOUVRES AZR-3

Installation of larger aluminium protection louvres:

Pressure drop diagram:

Aluminium protection louvrewith installation frame:Size:Pcs:

The combination by height

The combination by width

Several protection louvres can be lifted together.

Use the diagram to determine the total pressure drop in respect of air velocityat the free sectional area.

Ordering example:

Example of calculation:

B1 = 600 mm, H1 = 300 mm, n = 12Q = 1450 m3/hAef = 600 x (300 -21-(7 x 12)) = 117000 mm

2 => 0,117 m2

v = (Q / 3600) / Aef = (1450 / 3600) / 0,117 = 3,44 m/s

Δpcel from diagram Suply 36 PaOutlet 28 Pa

2

Air velocity at the sectional area B1x(H1-21-(7xn)) (m/s)

Pres

sure

dro

p Δp

cel (

Pa)

15

20

30

40

50

100

150

70

1.5 2.5 3 4 5 63.5 7 8

supp

ly - e

xtrac

tou

tlet

n ... number of vanes

= B1 x (H1-21-(7 x n)) in m2 where n is a number vanes.Aef

234

d

H1/B

1

H/B

H / B

H1 /

B1

d

40

68

B = B1+20H = H1+20

H2 /

B2

H1 /

B140

d

68

B2 = B1+14H2 = H1+14

ALUMINIUM PROTECTION LOUVRES AZR-4

Standard sizes:

Aluminium protection louvres AZR-4

Application:Aluminium protection louvres AZR-4 are suitablefor all low pressure air-conditioning, heating andventilation where supply and exhaust openingrequire protection against the direct ingress ofrain, birds, bigger insects etc.

Description:Aluminium protection louvres AZR-4 are made ofextruded aluminium sections galvanised in naturalaluminium colour.They consist of supporting frame and speciallyshaped horizontal vanes and protection screen ofgalvanised wire. They feature esthetical externalappearance.

All combinations of B1 and H1 according to thetable of dimensions are possible.

Non-standard dimensions are available onrequest.

In the case of order where we proceed from thedimension of the hole in the wall or thedimension of the duct, the following combinationsof B2 x H2 are possible:B2: 200, 300, 400, ..., 2000H2: 200, 300, 400, ..., 2000

Installation types:

Protection louvre is fixed with screws directly onduct.Designation : AZR-4

Protection louvre is fixed with screws to the built-in frame made of steel angle.Designation: AZR-4/3

Sizes AZR-4200 250 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000200 250 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 20003 4 4 6 7 8 9 11 12 14 15 16 18 19 21 22 23 25 26 27

H1(mm)B1(mm)

nn... number of vanes

235

B1 B1

B3

B/H

H1

B3 = (2 x B1) + 80 B = B3 + 20H = H1 + 20

H1

H3 H/B

H1

B1

H3 = (2 x H1) + 80 B = B1 + 20H = H3 + 20

AZR-4/3 B1xH1B1 = 1200 H1 = 6004

ALUMINIUM PROTECTION LOUVRES AZR-4

Installation of larger aluminium protection louvres:

Pressure drop diagram:

Aluminium protection louvrewith installation frame:Size:Pcs:

The combination by height

max. height H1=2000 mm

The combination by width

max. width B1=2000 mm

Use the diagram to determine the total pressure drop in respect of air velocityat the free sectional area.

Example of calculation:

= B1 x (H1-70-(16 x n)) in m2 where n is a number of vanes.

B1 = 1200 mm, H1 = 600 mm, n = 8Q = 5300 m3/hAef = 1200 x (600-70-(16 x 8)) = 482400 mm

2 => 0.48 m2

v = (Q / 3600) / Aef = (5300 / 3600) / 0.48 = 3 m/s

Δpcel from diagram Suply 32 PaOutlet 25 Pa

Ordering example:

2

Pres

sure

dro

p Δp

cel (

Pa)

15

20

30

40

50

100

150

70

1.5 2.5 3 4 5 63.5 7 8

supp

ly - e

xtrac

tou

tlet

n ... number of vanes

Air velocity at the sectional area B1x(H1-70-(14xn)) (m/s)

Aef

236

STEEL PROTECTION LOUVRES JZR-5, JZR-6

Installation types:

All combinations of B1 and H1 according to thetable of dimensions are possible.

Non-standard dimensions are available onrequest.

In the case of order where we proceed from thedimension of the hole in the wall or thedimension of the duct, the following combinationsof B2 x H2 are possible:B2: 200, 300, 400, ..., 2000H2: 200, 300, 400, ..., 2000

Protection louvre is fixed with screws directly on duct.Designation: JZR-5, JZR-6

Protection louvre is fixed with screws to the built-in frame made of steel angle.Designation: JZR-5/3, JZR-6/3

B = B1+15H = H1+15

5028

H1 /

B1

50H /

B

B2 = B1+10H2 = H1+10

2850

H1 /

B1

H2 /

B2

50

d

H1 /

B1

H/ B

40

81

B = B1+20H = H1+20

40d

H1 /

B1

H2 /

B2

B2 = B1+14H2 = H1+14

JZR-5 JZR-6 JZR-5/3 JZR-6/3

100 150 200 250 300 400 500 600 700 800 900 1000200 250 300 400 500 600 700 800 900 1000 1100 1200

2 3 4 5 6 8 10 12 14 16 18 20

H1(mm)B1(mm)

n

Sizes JZR-5

130014001500H1(mm)B1(mm)

n

200 250 300 400 500 600 700 800 900 1000 1100 1200200 250 300 400 500 600 700 800 900 1000 1100 12003 3 4 5 7 8 9 11 2 13 65

H1(mm)B1(mm)

n

Sizes JZR-6

130014001500 1600 1700 1800 1900 2000130014001500 1600 1700 1800 1900 200017 19 20 21 23 24 25 27

H1(mm)B1(mm)

n

n... number of vanes

n... number of vanes

Steel protection louvres JZR-5, JZR-6

Application:Steel protection louvres JZR-5 and JZR-6 aresuitable for all low pressure air-conditioning,heating and ventilation where supply and exhaustopening require protection against the directingress of rain, birds, bigger insects etc.

Description:Steel protection louvres JZR-5 and JZR-6 consistof supporting frame and specially shapedhorizontal vanes made of galvanised sheet steelwith attached protection screen of galvanised wire.At customer’s request, steel protection louvers canbe powder painted.

Steel protection louvers JZR-5 are classicalprotection louvers, the only difference being aclearance between the blades, which equals 50 mm,with the depth of the louvers being 50 mm and thewidth of the edge being 28 mm. Due to theirappearance (smaller clearance), they are suitable forsmaller openings.

Dimensions JZR-5:

Within the range B1 x H1 from 200 x 100 to 1500 x1000, we produce louvers of optional dimensions.

Dimensions JZR-6:

1 1 1

237

STEEL PROTECTION LOUVRES JZR-5, JZR-6

Installation of larger aluminium protection louvres JZR-6:

Pressure drop diagram:

Steel protective louvre withinstallation frame:Size:Pcs:

2

Pres

sure

dro

p Δp

cel (

Pa)

15

20

30

40

50

100

150

70

1.5 2.5 3 4 5 63.5 7 8

supp

ly - e

xtrac

tou

tlet

n ... number of vanes

Air velocity at the sectional area B1x(H1-70-(14xn)) (m/s)

The combination by height

max. height H1 = 2000 mm

The combination by width

max. width B1 = 2000mm

Ordering example:

Use the diagram to determine the total pressure drop in respect of air velocityat the free sectional area.

Example of calculation for JZR-5

= B1 x (H1-40-(14 x n)) expressed in m2 where n is a number of vanes.

B1 = 500 mm, H1 = 400 mm, n = 8Q =1000 m3/hAef = 500 x (400 -40-(14x8)) = 124000 mm

2 => 0,124 m2

v = (Q / 3600) / Aef = (1000 / 3600) / 0,124 = 2,24 m/s

Δpcel from diagram Suply 18 PaOutlet 2 m2

v = (Q / 3600) / Aef = (20000 / 3600) / 2 = 2,7 m/s

Δpcel from diagram Suply 25 PaOutlet 20 Pa

B3 = (2 x B1) + 80 B = B3 + 20H = H1 + 20

B1

H/B

B1

H1B3

H3 = (2 x H1) + 80 B = B1 + 20H = H3 + 20

B1

H1H1

H3 H/B

JZR-6/3 B1xH1B1 = 1600 H1 = 18004

Aef

Aef

238

φ6

B

φD3

H

φD1

φD

φD2

φD1

φDφD3

φD1

φDφD3

CIRCULAR PROTECTION LOUVRES OZR-1

Dimensions:

Installation types:

Circular protection louvres OZR-1

Application:Circular protection louvres OZR-1 are suitable forall low pressure air-conditioning, heating andventilation where supply and exhaust openingrequire protection against the direct ingress ofrain, birds, bigger insects etc.

Description:Circular protection louvres OZR-1 consist ofsupporting frame and specially designedhorizontal vanes. They are made of sheet steel orsheet aluminium and screen of galvanised steelwire. Upon customer's wish, they can be colouredor galvanised in any colour.

Protection louvre is screw-connected directly towall or duct.

Protection louvre is screw-fastened to the roundduct via the flange.

Size φD φD1 φD2 φD3 B H160 160 150 178 208 27.5 32200 200 190 218 248 25 32250 250 240 268 298 25 32315 315 305 333 363 26.5 32355 355 345 373 403 25.4 32400 400 390 419 450 25 32500 500 490 519 550 25 40630 630 620 649 680 25.2 40800 800 790 819 850 25 40900 900 890 919 970 51.9 651000 1000 990 1029 1070 51.7 65

239

OZR-1 / S / RAL / 160, 200, 250, 315, 355, 400, 500, 630, 800, 900, 1000

RAL 9010

SA

Size

CIRCULAR PROTECTION LOUVRES OZR-1

Pressure drop diagram:

1 2 3 4 5 6 7 810

20

30

40

50

100

150

200

40

45

50

55

60

65

70

LdB

(A)

WA

supply

exhau

st

Air velocity v (m/s)

Pres

sure

dro

p Δp

cel (

Pa)

pressure dropsound power levelair velocity

colour according to RAL

galvanised sheet steelsheet aluminium

Ordering key:

Use the diagram to determine the total pressuredrop in respect of air velocity at the free sectionalarea Aef.

Example of calculation

Size 630 => Aef = 0.2241 m2

Q = 2500 m3/h

v = (Q / 3600) / Aef = (2500 / 3600) / 0.2241 = 3 m/s

Δpcel from diagram Suply 55 PaOutlet 40 Pa

Size 160 200 250 315 355 400 500 630 800 900 1000Aef (m2) 0.0144 0.0224 0.0351 0.0556 0.0707 0.0883 0.1395 0.2241 0.3630 0.4743 0.6705

Δpcel (Pa)LWA (dB(A)) V (m/s)

240

SUPPLY AIR/EXHAUST AIR TOWER SP

Types of installation:

Types of end cap:

Supply air/exhaust air tower SP

Application:Towers SP are designed for supply and exhaustof air from rooms. In case of high noise level, air displacement towercan be fitted with sound attenuator.

Description:They are available in circular and square versions.They consist of three parts:• Housing mantle with attached flange or

special connection• Vane is fitted at any height and under any

inclination. Number of blades depends onrequired effective area.

• Cap is available in three forms: (flat, pointed orinclined).

Materials and dimensions of product aredetermined by the customer. Possible materials &colours: aluminium, steel or rust-resistant coated(polished). Air displacement towers can bepainted in any RAL colour.

1. Installation with flange 2. Installation with special connection

Tower is installed via the flange or specialconnection. If special connection is being used,air displacement tower is fixed on concrete ductwith screws.

Component parts:1. End cap2. Vane3. Housing mantle4. Flange5. Connection

Type 1Flat end cap

Type 2Pointed end cap: inclination 15°

Type 3Inclined end cap: inclination 30°

h1h2

x n

h3

H

φD

H

h3h1

h2 x

n

φD

15°

30°

241

SUPPLY AIR/EXHAUST AIR TOWER SP

Technical data:

All necessary technical data are providedaccording to the project on the basis of thecustomer's requests (required dimensions, airflow, etc.).

Note: Air tower SP is also available in square orrectangular cross-sections (AxB).

Variant with the sound attentuator:

The sound attentuator is mounted in the housingmantle of the supply air/exhaust air tower.For the determination of technical data, see thechapter: Sound Attenuators, Type MDZ.

cap type (1, 2, 3) height of the housing (h1)height (H)size

h3Size d d1 d2 d3 Cap 1 Cap 2 Cap 3140 137 113 173 233 88 149200 193 170 230 290 96 181250 249 225 285 345 70 103 214300 305 281 340 400 111 246360 361 336 396 456 118 278400 400 395 455 515 124 301500 500 495 555 615 137 359700 700 695 755 815 164 474900 900 895 955 1015 191 5891000 1000 995 1055 1115 204 6471300 1300 1295 1355 1415 244 820

Sizes 140-360 Sizes 400-1300 Dimensions

Cap type 3Ordering key:

d

ODZ, MDZ

h1h3

h2

H

d1

d

15

55h1

h2h3

H

d2

d3

d1

d

8

d2

d3

25h1

h3h2

H

SP-400 / 1851 / 1000 /

242

The right for technical changes reserved.