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LTG Aktiengesellschaft

Technical Documentation

Active Chilled BeamsInduction UnitsCeiling Installation

Example :Active chilled ceamtype HDF 300

LTG AktiengesellschaftD - 70435 Stuttgart, Grenzstraße 7 +49 (711) 82 01-0, Fax +49 (711) 82 01-720Internet: www.LTG-AG.deE-Mail: [email protected]

LTG Incorporated105 Corporate Drive, Suite ESpartanburg S.C., 29303 USA +1 (864) 599-6340, Fax +1 (864) 599-6344Internet: www.LTG-INC.netE-Mail: [email protected]

LTG S.r.l. con socio unicoVia G. Leopardi 10I-20066 Melzo +39 (02) 9 55 05 35, Fax +39 (02) 9 55 08 28Internet: www.LTG-SRL.comE-Mail:[email protected]

Ind-Decke-eng-TP-01 (03/11) 416-88



E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Ind-Decke-eng-TP (03/11)Internet: www.LTG-AG.de E-Mail: [email protected] in Germany · Former editions are invalid · Subject to technical modifications page 2 of 36

Active chilled beams and induction units for ceiling installation

Content Page

Active chilled beams and induction unitsKlimavent® 3

Product overview active chilled beams andinduction units for ceiling installation

3

Active chilled beam type HDF 300 4

Active chilled beam type HDF 600 15

Active chilled beam type HDC 21

Air conditioning system Indivent® 28

Ceiling induction unit type LHG 30

Ceiling induction unit type HFM 2500 35

NotesDimensions stated in this brochure are in mm.

Dimensions stated in this brochure are subject to GeneralTolerances according to DIN ISO 2768-vL.For the outlet grille special tolerances stated in the drawingapply.

Straightness and twist tolerances for extruded aluminumprofiles according to DIN EN 12020-2.

The surface finish is designed to meet the requirements forapplications in buildings - room climate according to DIN1946 part 2. Other requirements on request.

The actual tender documentations are at the end of thisdocument.They are available in word format at your local dealershipor at www.LTG-AG.de.




Active chilled beams and induction units for ceiling installation

LTG offers air diffusion by various techniques:

- Tangential flow from the ceiling

- Mixed flow from the ceiling

- Indivent flow (mixed/displacement air) from the ceiling

Active chilled beams and induction units KlimaventR areunits for induction systems.

The induction unit is a combined air and water system:

- The air system ensures air replenishment and room airmoisture control.

- The water system, which is particularly economical forthe transportation of energy, additionally heats or coolsthe air using heat exchangers.

This provides the twomost significant features of the induc-tion unit: energy-saving mode of operation and low spacerequirements.

Mode of OperationThe primary air (usually the fresh air requirement) from thecentral air conditioning unit is discharged through nozzlesat high speed. Simultaneously, it draws back-in secondaryair from the room.The secondary air flows into the unit through a heat ex-changer and is heated or cooled.The primary air is mixed with the heated or cooled second-ary air inside the unit and flows into the room through anoutlet grille or diffuser.

TypesLTG offers different types and sizes for any application.The main distinctive feature of the LTG induction units isthe way the temperature is controlled

Two-pipe systemThe unit has only one heat exchanger through whichchilled water flows for cooling and hot water for heating.Thus, it is only possible to either heat or cool in a single wa-ter circuit.

Four-pipe systemThe unit has two separate water systems, one for heating,the other for cooling. Thus, chilled and hotwater will alwaysremain separate. The four-pipe system fulfills all require-ments on varying loads and small control zones.

Valve control (water-side control)The heating or cooling output of the heat exchanger is con-trolled by modifying the water flow.

Damper control (air-side control)The heating or cooling output is controlled by modifying theflowof secondary air. Adjustable dampers guide the aircur-rent through the air cooler or the air heater or they divert thesecondary air through a bypass avoiding the heat ex-changer.

Product overview active chilled beams and induction units for ceiling installation

Type Activechilled beamtype HDF 300

Activechilled beamtype HDF 600

Activechilled beamtype HDC

Induction unittype LHG

Induction unittype HFM 2500

View ofunits

Application Modular ceiling system for ventilation us-ing processed outside air and individualtemperature control of rooms based onthe induction principle, i.e. without the useof a fan.

Dry cooling without dehumidification andcondensate drainage

Specifically de-signed for low bandgrid ceilings. In thecooling mode, thefacade-heated airenters the unit theshortest way and isimmediately chilled

Induction unit withattached linear dif-fuser LDB, for safeand draught-freeremoval of heat andairborne sub-stances from theroom.

Air-conditioning oflarge halls that re-quire ventilation,heating and cool-ing.

Water syst. 2-pipe system, 4-pipe system

Variants Low install. heightFresh air unitBlind diffuser

Fresh air unitBlind diffuser

Blind diffuser Water-side controlAir-side control ---

Installation In T-bar, grid and plasterboard ceilings

Flanged, recessed

In multi-level / sus-pended ceilings,ceiling panels

In concrete ceilings

Supply airpattern

In two directions In four directions In one direction In two directions(linear diffuserLDB)

In one direction(exhaust air socket




Active chilled beams and induction units for ceiling installationActive chilled beam type HDF 300

View of unit

Active chilled beam type HDF 300

SpecificationThe active chilled beam type HDF has been designed asa modular ceiling unit conditioning rooms with view to hu-midity and temperature based on the induction principle,i.e. without the use of a fan.

Installation, positioningIts low construction height allows installation in false ceil-ings offering limited space. The thus resulting low differ-ence in height between the heat exchanger and the ceilinglevel has been considered in the chilled beam's designwhich is suitable for dry cooling without dehumidificationand condensate drainage.

The reduced construction width and the freely selectablelength allow an easy integration in 300 or 312mm grid ceil-ings. Unit lengths from 1200mm to band installation (withina 300 mm grid system) may be realized.

The type of construction, which provides complete separa-tion from the ceiling cavity, suppresses sound transmissionfrom adjacent rooms (telephony sound insulation).

Functional PrincipleRoom air humidity is controlled through the centrally dehu-midified supply air avoiding involuntary dehumidification in-side the chilled beam. The 2-pipe system may be used foreither cooling only or change-over operation with cooling/reheating. The 4-pipe system with independent water cir-cuits automatically switches from cooling to heating andvice versa.

During operation, the primary air is 100% pretreated out-side air via a centralRTL unit. It assures theuse-dependentbasic ventilation using outside air, e.g. in conformity withDIN EN 13779 or DIN EN 15251 recommendations.Through uniformly arranged nozzles over the entire unitlength, the primary air is led in an injector-type diffuserwhich induces secondary air.Depending on the room load,this secondary air is either heated or chilled in a 2-pipe or4-pipe heat exchanger.

The supply air, a mixture of primary and secondary air, isexpelled into the room in two directions via ceiling jet.

Advantages Low primary air pressures between 50 and 100 Pa- Low-noise operation; sound pressure may be selectedso as to remain below 35 dB(A)

- High secondary (water-side) output of up to 350 W/m

- Excellent air flow balance of the units that form one ductrun

- Energy-efficient operation

Flexible nozzle design- May be selected for design terminal pressure

- Primary air flowmay be selected according to roomusebetween 20 and 100 m3/h/m

- Non combustible metal nozzles

Low installation height- 230 mm standard

- 160 mm type HDF-N

Efficient heat exchanger- High heating capacity evenwith lowLPHWsupply tem-peratures (e.g. 30 _C)

- High cooling capacity with high CHW supply temperat-ures (e.g. 16 _C)

- Low water flow rates designed for a temperature rangeof 3 K

Flexible connection of media- Primary air connection with NW 100 on the longitudinalside (standard)

- Water connections on unit top surface for convenientLH/RH pipework

Easy maintenance design- Easily removable secondary air grille

- No protective air filter required for the heat exchanger.

Perfect integration in false ceilings- Width 295 mm, recessed installation

- Width 319 mm, flanged installation

Pleasing design- Air diffuser construction from aluminium profiles

- Visible surfaces powder coated e.g. similar toRAL 9010

- Secondary air grille in the form of an expanded metalpanel (open surface > 63%)

- Secondary air grille in the form of a perforated sheetgrille optional (square perforation)

Easy commissioning- Measuring equipment to determine the air flow rate(standard)

- Pressure balancing via perforated sheet throttledamper





DesignActive chilled beam type HDF300 in the sizes1200, 1500, 1800 and 2100 as:

- 4-pipe system for cooling and heating

- 2-pipe system for cooling or heating

- Flanged installation or recessed installation

- Throttling damper KLI

Variants- HDF-N - low installation height

- HDF-L - fresh air unit

- HDF-B - blind diffuser

Materials and FinishPrimary air duct of galvanized sheet steel, nozzle duct andinduction nozzles of black coated sheet steel, 1 mm thick,longitudinal profiles of aluminum, either anodized orpowder coated similar to RAL.

Secondary air grille of galvanized sheet steel, powdercoated to match the air diffuser frame.

Accessories- Return air connection NW 100, integrated in the diffuserframe

- Unit extension in the form of a blind diffuser, to be usedfor the construction lengths required on site

- Sheetmetal console for valve connection on unit top-sideor end

- Thermal control valves

- Flexible water connections with 12 mm quick coupling

DimensionsSee drawings on the next pages.

L1 - 21

L2 - 27

L1

28,5

295

170

295 1,5

28,5

61,5 319 1,5

Air diffuser frame, recessed installation

Air diffuser frame, flanged installation

Air diffuser frame, flanged installation

Air diffuser frame, recessed installation

SizeL1 recessed[mm]

L2 flanged[mm]

L3[mm]

L4[mm]

L5[mm]

Weight[kg]

1200 1195 1219 982 560 660 17

1500 1495 1519 1282 710 810 22

1800 1795 1819 1582 860 960 27

2100 2095 2119 1882 1010 1110 32





Dimensions

Front view

Top view

Lateral view 4-pipe-unitshown: air diffuser frame flanged installation

SocketDN 100

L2

L3

229

229

319

169

16080

4xØ12

Lateral view 2-pipe-unitshown: air diffuser frame recessed installation

SocketDN 100

80

2xØ12

Top view

169

229

Front view

Suspension points withinsulating spacers forM8 threaded rods 4 x Ø 11

L3

229

319Ø

100

L2

L5

L4

Air inlet

Primary air

Air outlet Air outlet

Version with return air DN 100

Standard version

Air inlet

Primary air

Air outlet Air outlet


Connection forquick coupling

Connection forquick coupling

Measuring device forflow rate determination





Dimensions variant HDF-N - low installation height

Lateral view

160446

80


4653

8

67


Ø 12

Top view

Front view

L1

DN 100

295

L3

163

229

475950

Dimensions variant HDF-L - fresh air unit

Lateral view

Top view

Front view


DN 100

119

229

60

L1

L3

295

8229


Dimensions variant HDF-B - blind diffuser

100

50

295

Lateral view

Top view

Front view

Suspension points withinsulating spacers forM8 threaded rods

291

L1

50

L3




Active chilled beam and induction units for ceiling installationActive chilled beam type HDF 300

Technical data size 1200 - 4-pipe system - cooling and heating

VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1

[W]wok /pw[kg/h]/[kPa]

Qh /t[W/K]

Qh2

[W]woh /pw[kg/h]/[kPa]

14 50 15 21 5 21 214

120 / 5.1

17 298

80 / 2.1

18 80 21 27 6 25 249 19 344

22 120 27 33 7 28 281 22 386

22 50 16 22 7 23 230 18 316

28 80 22 28 9 27 271 21 371

34 120 28 34 11 31 310 23 421

35 50 17 23 11 25 254 19 345

44 80 24 30 14 31 306 23 412

53 120 30 36 18 36 357 26 476

54 50 19 25 18 29 292 22 390

68 80 26 32 23 36 355 26 476

83 120 33 39 28 39 392 31 561

84 50 21 27 28 32 320 26 460

106 80 29 35 35 32 319 32 574


VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1


Qh /t[W/K]

Qh2


18 50 16 22 6 28 278

150 / 6.0

22 387

100 / 2.5

23 80 23 29 8 32 323 25 448

28 120 29 35 9 37 365 28 502

29 50 17 23 10 30 298 23 411

36 80 24 30 12 35 353 27 482

44 120 30 36 15 40 404 30 548

45 50 19 25 15 33 330 25 448

57 80 26 32 19 40 398 30 535

70 120 33 39 23 46 464 34 619

70 50 21 27 23 38 380 28 507

89 80 29 35 29 46 462 34 618

108 120 36 42 36 51 509 41 730

109 50 25 31 36 42 416 33 598

138 80 33 39 46 42 415 42 747


VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1


Qh /t[W/K]

Qh2


23 50 18 24 8 34 342

180 / 7.0

26 476

120 / 2.9

29 80 24 30 9 40 398 31 551

35 120 30 36 12 45 449 34 618

35 50 19 25 12 37 367 28 506

45 80 26 32 15 43 434 33 593

55 120 32 38 18 50 497 38 674

55 50 21 27 18 41 407 31 552

70 80 28 34 23 49 490 37 659

86 120 35 41 28 57 571 42 762

86 50 24 30 28 47 468 35 624

109 80 32 38 36 57 569 42 761

134 120 39 45 44 63 627 50 898

134 50 28 34 44 51 512 41 735

170 80 37 43 56 51 511 51 919





Technical data size 2100 - 4-pipe-system - cooling and heating

VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1


Qh /t[W/K]

Qh2


27 50 19 25 9 41 406

200 / 7.1

41 735

130 / 3.0

34 80 26 32 11 47 473 47 851

42 120 32 38 14 53 533 53 954

42 50 20 26 14 44 436 43 780

53 80 27 33 18 52 515 51 916

65 120 34 40 22 59 590 58 1041

66 50 22 28 22 48 483 47 852

83 80 30 36 27 58 582 57 1017

102 120 37 43 33 68 679 65 1176

102 50 26 32 34 56 556 54 963

129 80 34 40 43 68 675 65 1175

159 120 42 48 52 74 744 77 1386

160 50 31 37 53 61 608 63 1135

201 80 41 47 67 61 606 79 1419

The chart shows examples for the unit design.A special se-lection program is available for other flow rates, primarypressures, temperatures and water flow rates.

Data refers to the unit including a secondary air grille² 63 % free surface

Correction for other flow rates see pages 12 - 14.

1) Water supply temperature: 16 _CAir inlet temperature or return air temperature: 26 _C


Legend

VP - primary air flow rate (¦3%)

p - static pressure at the primary air connection

LA18 - sound pressure level at 18 m2 Sabine (¦3 dB)

LwA - sound power level (¦ 3 dB)

QP - air-side cooling capacity (primary air ¦3%)

Qk - water-side cooling capacity (secondary ¦6%)

t - temperature difference between air inlet andwater supply

wok - standard water flow rate (cooling)

pw - water-side pressure loss

Qh - water-side heating capacity (secondary ¦6%)

woh - standard water flow rate (heating)





Technical data size 1200 - 2-pipe system - cooling or heating

VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1


Qh /t[W/K]

Qh2


14 50 15 21 5 14 142

120 / 5.1

20 360

80 / 2.1

18 80 21 27 6 18 178 23 421

22 120 27 33 7 22 215 27 477

22 50 16 22 7 18 176 22 390

28 80 22 28 9 23 227 26 464

34 120 28 34 11 28 281 30 534

35 50 17 23 11 23 231 24 438

44 80 24 30 14 31 305 30 531

53 120 30 36 18 39 385 35 624

54 50 19 25 18 32 316 28 511

68 80 26 32 23 42 423 35 636

83 120 33 39 28 47 474 42 763

84 50 21 27 28 39 386 35 626

106 80 29 35 35 29 285 44 798


VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1


Qh /t[W/K]

Qh2


18 50 16 22 6 18 184

150 / 6.0

26 468

100 / 2.5

23 80 23 29 8 23 231 30 547

28 120 29 35 9 28 280 35 620

29 50 17 23 10 23 229 28 507

36 80 24 30 12 30 296 34 603

44 120 30 36 15 37 366 39 695

45 50 19 25 15 30 300 32 569

57 80 26 32 19 40 397 38 691

70 120 33 39 23 50 501 45 811

70 50 21 27 23 41 411 37 664

89 80 29 35 29 55 550 46 826

108 120 36 42 36 62 617 55 992

109 50 25 31 36 50 502 45 813

138 80 33 39 46 37 371 58 1037


VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1


Qh /t[W/K]

Qh2


23 50 18 24 8 22 226

180 / 7.0

32 576

120 / 2.9

29 80 24 30 9 28 284 37 674

35 120 30 36 12 34 344 42 763

35 50 19 25 12 28 282 35 625

45 80 26 32 15 36 364 41 742

55 120 32 38 18 45 450 48 855

55 50 21 27 18 37 370 39 700

70 80 28 34 23 49 488 47 850

86 120 35 41 28 62 616 56 998

86 50 24 30 28 51 506 45 818

109 80 32 38 36 68 677 57 1017

134 120 39 45 44 76 759 68 1221

134 50 28 34 44 62 618 56 1001

170 80 37 43 56 46 456 71 1276






VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1


Qh /t[W/K]

Qh2


27 50 19 25 9 41 406

200 / 7.1

49 890

130 / 3.0

34 80 26 32 11 47 473 58 1040

42 120 32 38 14 53 533 66 1178

42 50 20 26 14 44 436 54 964

53 80 27 33 18 52 515 64 1146

65 120 34 40 22 59 590 73 1320

66 50 22 28 22 48 483 60 1081

83 80 30 36 27 58 582 73 1312

102 120 37 43 34 68 679 86 1541

102 50 26 32 34 56 556 70 1262

129 80 34 40 43 68 675 87 1570

159 120 42 48 52 74 744 105 1885

160 50 31 37 53 61 608 86 1545

201 80 41 47 67 61 606 109 1970


Data refers to the unit including a secondary air grille² 63 % free surface

Correction for other flow rates see pages 12 - 14.



Legend

VP - primary air flow rate (¦3%)

p - static pressure at the primary air connection

LA18 - sound pressure level at 18 m2 Sabine (¦3 dB)

LwA - sound power level(¦ 3 dB)

QP - air-side cooling capacity (primary air ¦3%)

Qk - water-side cooling capacity (secondary ¦6%)

t - temperature difference between air inlet andwater supply

wok - standard water flow rate (cooling)


Qh - water-side heating capacity (secondary ¦6%)

woh - standard water flow rate (heating)





Cooling capacity with different water flow rates

40 60 80 100 12060

80

100

120

Coolingcapacityin%ofthenominalcapacityQk

140 160

70

90

110

2-pipe

4-pipe

Water flow rate in % of the standard water flow rate

Heating capacity with different water flow rates

40 60 80 100 12060

80

100

120


Heatingcapacityin%ofthenominalcapacityQh

140 160

70

90

110

2-pipe

4-pipe





Water-side pressure loss with different water flow rates, 4-pipe system - cooling

Water-sidepressureloss

[kPa]

Water flow rate w [kg/h]

50 100 150 200 250 300

1

10

Size 1200

Size 1500

Size 1800

Size 2100

Water-side pressure loss with different water flow rates, 4-pipe system - heating

50 100 150 200 250 300

1

10


[kPa]


Size 1200

Size 1500

Size 1800

Size 2100





Water-side pressure loss with different water flow rates, 2-pipe system, cooling or heating

50 100 150 200 250 300

1

10


[kPa]


Size 1200

Size 1500

Size 1800

Size 2100





View of unit

ApplicationThe active chilled beam HDF is a ceiling-mounted induc-tion unit for ventilation and individual temperature controlbased on the induction principle, i.e. without the use of afan, using processed outside air.

Installation, positioningThe low construction height (200 mm) allows installation infalse ceilings offering limited space. The thus resulting lowdifference in height between the heat exchanger and theceiling level has been considered in the chilled beam'sdesignwhich is suitable for dry cooling without dehumidific-ation and condensate drainage.

The chilled beam is suitable for installation in grid ceilingsmeasuring 600 x 600 mm, 600 x 1200 mm, 625 x 625 mmor 625 x 1250 mm and may be positioned in or adjacent toT-bar profiles. With grid and plasterboard ceilings, installa-tion may be edge-to-edge or overlapping.

Functional PrincipleDuring operation, the primary air is 100% pretreated out-side air via a central central AHU. It assures the use-de-pendent basic ventilation using outside air, e.g. in conform-ity with DINEN 13779 or DINEN 15251 recommendations.Through uniformly arranged nozzles over the entire unitlength, the primary air is led in an injector-type diffuserwhich induces secondary air.Depending on the room load,this secondary air is either heated or chilled in a 2-pipe or4-pipe heat exchanger.

The supply air, a mixture of primary and secondary air, isuniformly diffused to four sides into the room via preset, di-vergent ceiling jets covering all four room directions.

Room air humidity is controlled through the centrally dehu-midified supply air avoiding involuntary dehumidification in-side the chilled beam. The 2-pipe system may be used foreither cooling only or change-over operation with cooling/reheating. The 4-pipe system with independent water cir-cuits automatically switches from cooling to heating andvice versa.

The type of construction, which provides complete separa-tion from the ceiling cavity, suppresses sound transmissionfrom adjacent rooms (telephony sound insulation).

Advantages Low primary air pressures between 50 and 150 Pa- Low-noise operation; sound pressure may be selectedso as to remain below 35 dB(A)

- Very low SFP value for secondary air conveyance(< 0.04 kW/(m³/s)) possible

- High secondary (water-side) output with low primarypressure

- Excellent air flow balance of the units that form one ductrun

Flexible nozzle design- Six calibrated, well-matched jet combinations- Non combustible metal nozzles

- Exchangeable jet strip, optional

Low installation height (200 mm)- Installation possible in suspended ceilings of lowheight- Facilitates the crossing of lines

Efficient injector and heat exchanger- High specific secondary output even with low primaryair flow rate (in certain areas > 1W/K/(m³/h))

- High heating capacity evenwith lowLPHWsupply tem-peratures (e.g. 30 _C)

- Lower overtemperature in the heating mode, thus bet-ter ventilating efficiency

- High cooling capacity with high CHW supply temperat-ures (e.g. 16 _C)

- Low water flow rates designed for a temperature rangeof 3 K

Flexible connection of services- Primary air connection with NW 125 on the longitudinalside (standard)

- Air connection left or right, as required

- Eccentric air connection, if required, not conflicting withceiling suspension

- Water connections outside the unit on top inorder toen-able connection on the left or right

Easy maintenance design- Easy removal of secondary air grille, secured by moor-ing lines

- Easy access to and cleaning of heat exchanger andjets

- No protective air filter required for the heat exchanger.

Virtually draught-free indoor air flow- Optimized air distribution with steady, preset divergent,inductive ceiling jet

Attractive appearance- Visible surfaces powder coated e.g. sim. to RAL 9010- Secondary air grille in the form of a perforated sheetgrille (open surface > 63%)

Easy commissioning- Measuring equipment to determine the air flow rate(standard)





DesignActive chilled beam type HDF 600 in the size600 x 1200 mm, as:

- 4-pipe-system for cooling and heating

- 2-pipe-system for cooling or heating

- Grid sizes 600 mm and 625 mm

- Throttling damper KLI

Materials and FinishPrimary air duct of galvanized sheet steel, nozzle duct andinduction nozzles of black coated sheet steel, 1 mm thick;secondary air grille of galvanized sheet steel, powdercoated similar to RAL.

Installation in different ceiling systems

593 / 1193 598 / 623 /1198 / 1248

570 / 1170

Accessories- Thermal control valves

- Flexible water connections with 12 mm quick coupling

Dimensions

593

375

74

42

96 452

Ø 12

649

45

59

67

536 60

View from below

Top view Detail A

Lateral view

33

A

Ø 125

1148

1178 ± 1

319

1193

199±1

593

70

452

Ø 11

Lateral view





Technical data size 600 x 1200, 2-pipe-system - cooling or heating

VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP / t[W/K]

Qk/t[W/K]

Qk ges 1)


Qh/t[W/K]

Qh ges 2)


54 70 12 18 18 45 628

170 / 7

40 621

110 / 3

64 100 16 23 21 53 735 47 717

78 150 21 28 26 63 889 56 859

67 70 16 22 22 50 717 44 667

80 100 20 27 26 57 836 51 762

98 150 25 32 32 69 1006 61 906

84 70 19 26 27 54 816 48 705

100 100 24 30 33 62 949 55 800

122 150 29 35 40 74 1139 66 943

105 70 23 30 34 59 929 52 736

125 100 28 34 41 67 1079 60 828

153 150 33 39 50 79 1293 71 969

131 70 27 33 43 63 1059 56 756

156 100 31 38 51 72 1228 64 844

191 150 36 43 62 85 1470 75 979

167 70 31 37 55 68 1229 61 764

200 100 35 42 65 77 1425 69 843

Technical data size 600 x 1200, 4-pipe-system - cooling and heating

VP[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP / t[W/K]

Qk/t[W/K]

Qk ges 1)


Qh/t[W/K]

Qh ges 2)


54 70 12 18 18 41 583

170 / 7

29 421

110 / 1

64 100 16 23 21 48 694 35 498

78 150 21 28 26 60 856 43 612

67 70 16 22 22 46 681 33 462

80 100 20 27 26 55 807 39 539

98 150 25 32 32 67 987 46 645

84 70 19 26 27 52 792 37 497

100 100 24 30 33 61 933 43 571

122 150 29 35 40 73 1130 51 674

105 70 23 30 34 57 916 40 520

125 100 28 34 41 66 1071 46 584

153 150 33 39 50 78 1284 54 667

131 70 27 33 43 63 1052 43 525

156 100 31 38 51 71 1219 49 568

191 150 36 43 62 82 1442 55 614

167 70 31 37 55 67 1217 46 493

200 100 35 42 65 74 1394 49 497


Data refer to the unit including a secondary air grille² 63 % free surface

Correction for other flow rates see page 18.


2) Water supply temperature: 40 _CAir inlet temperature or return air temperature: 22 _CPrimary air temperature: 16 °C

Legend

VP - primary air flow rate (¦3%)p - static pressure at the primary air connectionLA18 - sound pressure level at 18 m2 Sabine (¦3 dB)LwA - sound power level (¦ 3 dB)QP - air-side cooling capacity (primary air ¦3%)Qk - water-side cooling capacity (secondary ¦6%)t - temperature difference between air inlet and

water supplywok - standard water flow rate (cooling)pw - water-side pressure lossQh - water-side heating capacity (secondary ¦6%)woh - standard water flow rate (heating)





Cooling/heating capacity with differentwater flow rates for 2-pipe heat exchanger

Co

olin

g/h

eati

ng

cap

.in

%o

fn

om

inal

cap

.

Water flow rate [kg/h]

Capacity with different water flow rates for 4-pipe heat exchangerCooling capacity Heating capacity

0,60

0,70

0,80

0,90

1,00

1,10

1,20

50 70 90 110 130 150 170 190 210 230 250

Co

olin

gca

pac

ity

in%

of

no

min

alca

p.


0,60

0,70

0,80

0,90

1,00

1,10

1,20

50 70 90 110 130 150 170 190 210 230 250

Hea

tin

gca

pac

ity

in%

of

no

min

alca

p.


Water-side pressure loss for 2-pipe heat exchanger / 4-pipe heat exchanger

0,0

2,0

4,0

6,0

8,0

10,0

12,0

14,0

16,0

50 70 90 110 130 150 170 190 210 230 250

Wat

er-s

ide

pre

ssu

relo

ss[k

Pa]


0,0

2,0

4,0

6,0

8,0

10,0

12,0

14,0

16,0

50 70 90 110 130 150 170 190 210 230 250

Wat

er-s

ide

pre

ssu

relo

ss[k

Pa]


Cooling

Heating





DimensioningInduction systems are economical if operated locally usingthe primary air flow calculated based on DIN EN 15251while covering the cooling loads effective in the room. Anoccupancy rate typical for offices of 10 m² floor space/per-son results in a calculated specific primary air flow rate of5m³/h/m² for a low-emission building. A “non-low-emission“building requires an outside air flow rate of 7.5 m³/h/m². Thecooling loads of offices provided with good solar protectionare usually about 40 to 60 W/m².

What’s special about the HDF ceiling induction unit is the4-directional supply air diffusion. It requires aminimum dis-tance to be observed between two units or unit and wall, re-spectively, in order to avoid excessive jet deflection vertic-ally downwards.

Indoor air flow: Supply air is diffused in all four directions

Location of terminals in the ceiling gridPositioning of the units in the grid ceiling should be in awayto harmonize with the overhead lights. Avoid close vicinityof the units to protruding overhead lights.

The following examples provide suggestions for a 600mmgrid ceiling with square, mirrored grid lights installed flushto edge.

Examples apply to

- 10 m²/person

- 26 °C room temperature

- 16 °C water supply temperature

- 16 °C primary air temperature

600 x 600 grid ceiling, 4 x 3 grid lightWith 8.6 m²/unit and 7.5 m³/h/m²:· 65 m³/h/unitt · 735 W · 85 W/m²

600 x 600 grid ceiling, 4 x 3 grid lightWith 17.3 m2/unit and 5 m³/h/m²:· 87 m³/h/unit · 845 W · 49 W/m²

With 17,3 m2/unit and 7.5 m³/h/m²:· 130 m³/h/unit · 1120 W · 65 W/m²

600 x 600 grid ceiling, 3 x 3 grid lightWith 13 m²/unit and 5 m³/h/m²:· 65 m³/h/unit · 735 W · 56 W/m²

With 13 m²/unit and 7.5 m³/h/m²:· 98 m³/h/unit · 1000 W · 77 W/m²




Active chilled beams and induction units for ceiling installationActive chilled beam type HDF

Nomenclature

HDF-2 / 300 / N / 1200 / A / S / S / 80 / 45 / RAL ----

2-pipe-unit4-pipe-unit

24

Unit width 300600

StandardLow installation height *Fresh air unitBlind diffuser

–NLB

SizeSize *Size *Size *

1200150018002100

Return air spigotwith *without

AO

Diffuserrecessedflanged

SU

Secondary air grilleexpanded metal *perforated sheet

SL

Primary pressure 80

Flow rates 45

Coating to diffusersimilar to RAL, e.g. 9010

* = only available for unit width 300 mm




Active chilled beams and induction units for ceiling installationActive chilled beam type HDC

Views of unit

Active chilled beam type HDC 1000 (4-pipe system)

Active chilled beam type HDC 1000, view from below

ApplicationThe active chilled beam type HDC 1000 is specifically de-signed for installation in false ceilings. In the cooling moderoom air is heated at the facade, entrained into the unit,cooled and recirculated to the space.

Installation, positioningFlanged or recessed frame options.

Mode of operationPrimary air flow from internal metal nozzles, induces roomair through a heat exchanger where it is cooled or heated.The primary air is mixed with the heated or cooled secon-dary air and delivered into the room.

Hygienic operation is achieved by avoiding dehumidifica-tion of the secondary air.

SpecificationThe active chilled beam type HDC 1000 is available as:

- 4-pipe system for cooling and heating

- 2-pipe system for cooling or heating

Advantages Virtually noiseless operation Low installation height (240 mm) Pleasing, combined air inlet/outlet grille High thermal comfort in the occupied zone Condensate-free operation Fresh air supply to the room Non combustible metal housings and nozzles Maintenance-free design.Valves and heat exchanger are easily accessible by re-moving the grille.

Energy efficientby use of low primary flow rates and low static pressureat the primary air duct




Active chilled beams and 8inductionunits for ceiling installationActive chilled beam type HDC

Cooling ModeRoom air heated at facade is drawn directly into the unitswhere it is cooled. Supply air is diffused along the ceiling,mixes with the ambient air to reduce air speed and temper-ature difference.

High thermal comfortup to 50 W/m2 or 7.5 m3/hm2 (primary air).

Indoor Air Flow

Figure 1 Figure 2 Figure 3

Typical Arrangement

min. 2.8 m

min. 3.00 m

Facade

Section through a typical office room, length = 6 m, height = 2.8 m. Schematic illustration of indoor air flow.






V[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1

[W]QP1


Qh /t[W/K]

Qh2


40 50 22 28 13 23 230 130

100 / 6.3

18 720

100 / 2.450 77 23 29 17 28 280 170 22 880

60 110 26 32 20 34 340 200 26 1040

70 150 29 35 23 37 370 230 29 1160

80 195 33 39 27 42 420 270 32 1280


V[m3/h]

p[Pa]

LA18[dB(A)]

LwA[dB(A)]

QP /t[W/K]

Qk/t[W/K]

Qk1

[W]QP1


Qh /t[W/K]

Qh2


40 50 22 28 13 24 240 130

100 / 8.5

20 800

100 / 6.250 77 23 29 17 30 300 170 25 1000

60 110 26 32 20 36 360 200 30 1200

70 150 29 35 23 40 400 230 33 1320

80 195 33 39 27 45 450 270 37 1480

Data is based on the unit with the inlet/outlet grille installed.

The suction air temperature at the unit is usually 1-2 Khigher than the room temperature.

Standard water flow rate for heating and cooling: 100 kg/h.Correction values for other flow rates see pages 26/27.

1) Water supply temperature: 16 _C WRoom temperature at a height of 1.1 m: 26 _CNon-condensing operation.

2) Water supply temperature: 60 _CAir inlet temperature: 20 _C.

Legend

V - flow rate (¦ 10%)

p - static pressure at primary air spigot

LA18 - sound pressure level (¦ 3 dB)

LwA - sound power level (¦ 3 dB) (without ceiling)

QP - primary cooling capacity (fresh air) (¦ 5%)

Qk - cooling capacity, secondary(heat exchanger) (¦ 5%)

t - temperature difference between room airand water supply

wok - standard flow rate at cooling capacity


Qh - heating capacity, secondary (¦ 5%)

woh - standard flow rate at heating capacity

DimensionsFlanged installation:Size 1000 - L x W x H = approx. 1240 x 340 x 240 mm

Recessed installation:Size 1000 - L xW x H = approx. 1198 x 298 x 240mm (suit-able for plank tiles 300 wide x 1200 or 1250 mm long

Weight: Basic unit:17 kg without waterOutlet: 6 kg

Accessories, special versionsStraight-way valves with electrothermal actuator.





Dimensions size 1000 - 4-pipe system - cooling and heating, flanged installation

View “X”

air inlet air outlet

primary air

Hole 8.5 for threaded rod M6

Plug-in connection12 mm Ø x 0.75

KKW-VL = cooling - water inletKKW-RL = cooling - water returnHZG-VL = heating - water inletHZG-RL = heating - water return

“X”

340 ±1.5

286 ±1.5

160 36

HZG-VL

KKW-VL

KKW-RL

HZG-RL

73 73 48

101

3538

31

240

17Ø100

1190 ±1.5

16Unit suspension 1069 + 3

Unit length 1158

Total length of outlet 1240 ±1.5

575.5





Dimensions size 1000 - 2-pipe system - cooling or heating, flanged installation

View “X”

“X”

16

340 ±1.5

286 ±1.5

160 36

KKW-VL

KKW-RL

72 121.5

167

38

240

17Ø100

Ø 8.5 forthreaded rod M6

1190 ±1.5

Unit suspension 1069 + 3

Unit length 1158

Total length of outlet 1240 ±1.5

575.5

air inlet

primary air

air outlet

KKW-VL = cooling - water inletKKW-RL = cooling - water return

Plug-in connection12 mm Ø x 0.75





Water-side pressure loss and cooling capacity with different water flow ratesSize 1000, 4-pipe system - cooling and heating, standard flow rate 100 kg/h

40 90 140 1900.5

1

2

5

10

20

20 40 60 80 100 120 14040

60

80

100

120

Flow rate w [kg/h] Flow rate in % of the standard flow rate

Cooling Cooling


Δpw[kPa]

Secondarycoolingcapacityin[%]ofthenominalcapacityQk

40 90 140 1900.2

0.5

1

2

5

10

50 70 90 110 130 15040

60

80

100

12015


Heating Heating


Δpw[kPa]

Secondaryheatingcapacityin[%]ofthenominalcapacityQh

Note: The minimum flow rate must be at least 20% of the standard flow rate in the cooling mode and 40% in the heating mode(to ensure water-side pressure equalization).





Water-side pressure loss and cooling capacity for other flow ratesSize 1000, 2-pipe system - cooling or heating, standard flow rate 100 kg/h

40 90 140 1900.5

1

2

5

10

20

20 40 60 80 100 120 14040

60

80

100

120


Cooling Cooling


Δpw[kPa]

Secondarycoolingcapacityin[%]ofthenominalcapacityQk




Active chilled beams and induction units for ceiling installationAir conditioning system LTG Indivent®

ApplicationModern air conditioning systems are required to removeheat loads and airborne substances from the occupiedspace in a safe and effective manner, without producingany draft.

The air conditioning system's construction, however, mustleave room for flexibility with view to the appearance anduse of the room. Furthermore, the system must be cost ef-fective within a wide performance range.

The LTGsystem IndiventRmeets these requirements. Itof-fers high thermal comfort by combining the advantages ofboth a mixed and a displacement air flow.

Installation, positioningUnits are usually installed over the 'core' wall, in a ceilingbulkhead or in a suspended ceiling. Indivent units requireconnection to the air conditioning system's primary air sup-ply and the chilled water system.

Installation example for IndiventR system

Advantages Comfort- High cooling capacities and uniform temperatures inthe entire occupied space.

- High thermal comfort due to low air speeds and low tur-bulence.

- High air quality - heat and airborne pollution are ex-hausted at high level.

Economy- The Indivent® system requires only one compact, roomsaving air duct system since the heat loads are beingremoved via a compact chilled water system.

Flexibility- Interior design of ceiling, lighting and window elementsis permitted.

- Workplaces in the roommay be arranged according torequirement, without any restrictions.

Mode of operationThe LDB linear diffuser with integrated cooling is installedin the ceiling over the core wall while heating is providedthrough radiators located under the window. With this con-figuration, identical flow patterns during summer andwinterare achieved. Further enhancements allow for over-win-dow locations.

Recirculated air is drawn in from the room and across acooling coil. The mixture of fresh air and recirculated air isblown into the room through a linear diffuser. In the localmixed air zone the temperature/velocity differencesbetween the ambient air and the supply air are reduced.

Close to the floor, the cooled air jet directs itself at lowspeed and with little turbulence across the occupied spacetowards the window. The air speed is virtually independentof the cooling load. The temperature difference betweenthe head and the foot level is less than 1K.

Air heated by room loads rises to high level .

Above the occupied space a cushion of warm room airwithan increased pollution concentration is formed and re-moved from the room. In this way the formation of temperat-ure layers ensures cost effective system operation .

coldwater

primaryair joint

4000 - 7500

>2500

returnair

Scheme of Indivent system flow pattern

Mixed air flow Reduction of velocity/temperature differences due tohigh induction mixing with ambient air

Displacement air flowSupply air mixed with ambient air, moves towards thefacade

Thermal effect and displaced room air transport airborne pollution and thermal loads to high level.

Return flow path to the exhaust location and formixingwith supply air

Range of ProductsThe core element of the Indivent® system is the LDB lineardiffuser with integrated cooling, the Indivent® unittype LHG,induction unit for a constant primary air flow with air-sidedamper control of the cooling capacity with bypass or wa-ter-side through valves. Available in five sizes.




Active chilled beams and induction units for ceiling installationAir Conditioning System LTG Indivent®

Indoor air flow

Local mixed air zone

Deflection of the air flow near the floor

Air heated by occupants or equipment rises to high level

Proposed InstallationThe best installation position for the linear diffusersdepends on:

use of the room type of room ceiling design return air path inside the false ceiling.Flexibility of diffuser design and adjustment, ensures aperfect solution from both flow technology and aestheticaspects, for example:

Ideal location for the induction unit/ fan coil unit with returnair is within an open grid ceiling.

Equally successful are closed false ceilings or ceilingbulkheads that are separated through walls extending tothe room soffit. Shadow joints in the ceiling boxes or in themarginal gap serve as return air openings. The averagespeed in these openings should not exceed 0.6 to 0.9 m/s(jet contraction not considered).

For installation of LTG Linear Diffusers in the area close tothe corridor, the following is recommended:

If there are no ceiling bulkheads separating the supply airfrom the return air, a distance of about 1 m must be keptbetween the return air opening and the air outlet.

Install the linear diffuser in parallel to the corridor wall.Optimum distance: 0.6 to 1 m.

When using full height cupboards , a minimum distanceof 0.2 m between the air outlet and the cupboard frontmust be provided.

Cabinets directly underneath linear diffusers will have noimpact on the indoor air flow if a clearance of about 0.4 mto the ceiling is allowed.

Installation example for LTG Air Conditioning System IndiventR




Active chilled beams and induction units for ceiling installationAir conditioning system Indivent®, ceiling induction unit type LHG

View of unit

LTG type LHG units are induction units for 2-pipe systems,with an integrated linear diffuser of type LDB.

Mode of operationThe primary air from the airconditioningAHU(fresh air rate)is diffused through nozzles at high speed.

At the same time, secondary air is drawn in from the room.This secondary air is cooled within a heat exchanger.

Primary air ismixedwith this cooled secondary air, then de-livered into the room through the linear diffuser.

Depending on the unit type, control may be performed bywater-side valves, or air-side bypass damper. Heating is,in general, performed through static heating at the facade.

Advantages High cooling capacitydue to high capacity heat exchanger

Low-noise operationdue to the optimized shape of the nozzles and theirarrangement

Flexible nozzle equipmentmultiple nozzle sets that offer flexible selection, allow foroptimum indoor air flow

High operational safetylow-friction ball-bearings and torsion free casing.

Maintenance-free actuatorsMaintenance-free and safe-to-operate electrical(0 - 10 V) permanent or3 point)and pneumatic actuatorsfor any controller type.

High induction ratiothanks to an excellent aerodynamicenergy conversionofthe primary air flow.

Computer-based selection using special programsIndiventR units are sized using special LTG computerprograms.

Fire protectionis ensured through the use of primary air nozzles ofaluminum and primary air sockets of sheet steel (bothoptions on request).

DesignLDB Linear Diffuser

Cylinders: polystyrene black, matpolystyrene white, mat

Rails: aluminum natural anodisedpainted (similar to RAL) orhigh-gloss chromium-plated

Air distribution box: galvanized steel

Integrated Cooling

Housing: galvanized steel

Heat exchanger: copper pipe with pressed-onaluminum fins

Filter: class EU2





Dimensions

* The ceiling clearance may be re-duced if there are alternative lateralbackflow surfaces.

D e c k e

Required space for flapactuator depending ontype, right or left hand

Backflow grille,e.g. type LTG LCD

C/2

C/2

Condensatedrain on requestext. Ø 15

Connection forthreaded pipe fitting Cu 12 x 1(other threaded adapters onrequest)

Diffuser profile optionally(see LDB leaflet)Represented: 0 profile

Mounting suspensionwith threaded rodØ 6 mm

Mountingsuspension withthreaded rodØ 6 mm

No angle requiredif Ls < B+300

560

210

344

17182

216

103

57

180350

537

17

Ø100

37

355

23

7180*

181

50

L S

60240

57

D

17

26

50B

C

135

17

17

26 135

50

For transportation:unit and diffusersupplied separately

Minimum

heightfrom

upper

edgeofceilingpanel

Size Dimension B [mm] Dimension C [mm]Condensate collector

Dimension D [mm] Dimension LS [mm]Outlet length

Weight* [kg]

500 497 725 531 600 - 1500 19 (21.5)630 642 870 676 730 - 2000 24.5 (26)800 797 1030 831 900 - 2500 28 (30.5)1000 997 1230 1031 1100 - 2500 34 (36.5)1250 1242 1470 1276 1350 - 2500 40 (42.5)

* Values are given for units without bypass. Values for units with bypass in ( )





Technical data, 2-pipe-system(LS = outlet length)

p[Pa]

VP[m3/h]

LwA[dB(A)]

QP/tP

[W/K]

Qk/t[W/K]LS =

800 mm

Qk/t[W/K]LS =1200mm

Qk/t[W/K]LS =1500mm

200 40 28 13 21 30 *50 30 17 23 32 3560 32 20 ** 35 38

250 40 30 13 24 31 *50 32 17 26 34 3760 34 20 ** 36 40

300 40 31 13 25 32 *50 34 17 27 35 3860 36 20 ** 37 4170 37 23 ** 40 4480 39 27 ** ** 46

Size 500 wok / pw = 200 [kg/h] / 21.1 [kPa]

p[Pa]

VP[m3/h]

LwA[dB(A)]

QP/tP

[W/K]

Qk/t[W/K]LS =1000mm

Qk/t[W/K]LS =1500mm

Qk/t[W/K]LS =2000mm

200 40 26 13 26 * *50 28 17 28 37 *60 30 20 30 39 45

250 40 28 13 27 35 *50 30 17 30 38 *60 32 20 32 41 47

300 40 30 13 28 36 *50 32 17 31 40 *60 34 20 33 43 4970 36 23 ** 45 5290 38 27 ** ** 57


p[Pa]

VP[m3/h]

LwA[dB(A)]

QP/tP

[W/K]

Qk/t[W/K]LS =1000mm

Qk/t[W/K]LS =1500mm

Qk/t[W/K]LS =2000mm

200 50 27 17 28 37 *65 30 22 31 41 4880 32 27 ** 44 52

250 50 29 17 29 39 *65 32 22 32 43 5080 34 27 ** 46 55

300 50 31 17 30 40 *65 33 22 33 44 5280 36 27 ** 48 57100 38 33 ** ** 62120 40 40 ** ** 66


p[Pa]

VP[m3/h]

LwA[dB(A)]

QP/tP

[W/K]

Qk/t[W/K]LS =1250mm

Qk/t[W/K]LS =1750mm

Qk/t[W/K]LS =2500mm

200 60 28 20 35 44 *80 31 27 39 49 60100 33 33 ** 54 66

250 60 30 20 36 46 *80 33 27 40 51 63100 35 33 ** 56 69

300 60 31 20 37 48 *80 34 27 42 53 65100 37 33 ** 58 71120 39 40 ** ** 76140 40 47 ** ** 81


p[Pa]

VP[m3/h]

LwA[dB(A)]

QP/tP

[W/K]

Qk/t[W/K]LS =1500mm

Qk/t[W/K]LS =2000mm

Qk/t[W/K]LS =2500mm

200 65 27 22 38 48 *80 29 27 42 52 60110 32 33 ** 59 68

250 65 29 22 40 50 *80 31 27 44 54 63110 34 33 ** 61 71

300 65 32 22 42 52 *80 33 27 45 56 65100 35 33 ** 61 71125 37 42 ** ** 78145 39 48 ** ** 82


Legend:

p static pressure at the primary air spigot

VP primary air flow rate (10%)LwA acoustic power level (3 dB)QP primary cooling capacity (fresh air) (5%)tP temperature difference between room air

and primary air

t temperature difference betweensuction air temperature before enteringthe heat exchanger and water supply

Qk secondary cooling capacity(heat exchanger) (5%)

wok standard water flow rate at cooling capacity

pw water-side pressure loss

* primary air flow rate too low for slot length

** primary air flow rate too high for slot length





Water-side pressure loss, 2-pipe system

30 50 100 200 300 500

1

2

5

10

20

30

0.6

water inlet temperaturetw1 = 10 ... 15 °C

size 500size 630size 800size 1000size 1250


Δpw[kPa]

Flow rate w [kg/h]

Loss of secondary cooling capacity when changing the water flow rate, 2-pipe system

40 60 80 100 12040

60

80

100

120

20

Note :The minimum water flow rate win the heat exchangermust be at least 20%of the standard water flow rate (wok)taking into consideration the water-sidepressure equalization.

Nominal water flow ratesSize 500: 200 kg/hSize 630: 250 kg/hSize 800: 300 kg/hSize 1000: 350 kg/hSize 1250: 420 kg/h

Secondarycoolingcapacityin[%]ofthenom.capacityQk






Selection examplesGiven values:

Required cooling capacity: Qk soll = 550 W

Water inlet temperature: tVL = 16 C

Room temperature/suction air temperature beforeentering the heat exchanger: tR/tA = 26 C

Primary air flow rate: VP = 65 m3/h

Static pressure at primary air socket: p = 250 Pa

Primary air temperature: tP = 18 C

Installation dimensions / slot length : LS = 1500 mm

LHG, size 800selected (according to selection chart)

Resulting according to selection chart:

Primary cooling capacity: QP 22 W/K x 8 K = 176 W(with tP = tR - tPri = 8 K)

Secondary cooling capacity Qk 43 W/K x 10 K = 430 W(at standard flow rate) (with t = tA - tVL = 10 K)

Total cooling capacity: Qkges 176 W + 430 W = 606 W

Sound power level: LwA 32 dB(A)

The total cooling capacity is larger than the required cooling capacity.Since the primary cooling capacity depends on the primary air flow rate,and the latter is fixed due to the required air change rate,the secondary cooling capacity may be reduced by changing the water volume.

Required secondary cooling capacity:Qk soll - QP = Qkerf 550 W - 176 W = 374 W

Share of the secondary coolingcapacity in percent when usingthe standard water flow rate 374 W / 430 W = 0,87 87 %

According to the diagrams (previous page) the following values are obtained:

Water flow rate at87% secondary cooling capacity:about 62 % of the standard flow rate(reading) 300 kg/h x 0,62 = 186 kg/h

Pressure loss at 186 kg/h: ca. 9 kPa (reading)

The secondary cooling capacity may be adjusted through selection of the unit size,the slot length and by changing the water flow rate.




Active chilled beams and induction units for ceiling installationCeiling induction unit type HFM 2500

Views of unit

Ceiling induction unit type HFM 2500 in manufacture

HFM units mounted in test device

ApplicationThe LTG ceiling induction unit type HFM was specificallydesigned for air conditioning large factory buildings that re-quire ventilation, heating and cooling. If thermal loads arehigh, the advantages of an air-waterA/C systemcomparedto an air-only system may be used as follows:

air replacement and discharge of particle and humidityloads through a centrally processed primary air flow interms of a pure outside air flow

highly flexible, decentralized heating and coolingoperation

as a 2-pipe system for heating with centrally heatedprimary air (heat up) and cooling in the recirculating airmode trough water-cooled heat exchanger

- as a 4-pipe systemwith separate circuits for cold and hotwater for heating and cooling in the recirculating airmode

This allows to limit the outside air flow to the minimum airexchange required to maintain hygienic conditions, and tominimize the construction volume for A/C central units andduct systems.

Installation, positioningThrough adaptation of the air outlet different installa-tion types (horizontal to vertical) and installationheights (5 - 15 m) may be realized depending on theactual conditions on site.

Mode of OperationThe primary air delivered by the A/C central unit is blownout virtually noiseless through nozzles. Through the thusgenerated induction, room air is fed through a heat ex-changer in terms of a secondary air flow that is heated orcooled. The primary air is mixed inside the unit with theheated or cooled secondary air, then distributed in theroom through air diffusers.

The diffuser is continuously adjusted according to the tem-perature difference between the supply air and the room inorder to ensure good thermal comfort with an adequate jetpenetration depth.

The primary air flow is best adapted to the actual use byswitching on/off units or unit groups.

Thanks to the fact that the airborne dust is decreasing de-pending on the suspension height, the heat exchangerstays clean for a long time, especially if condensation isavoided through primary air dehumidification.

Advantages High cooling and heating capacity (200 W/m2)due to high induction ratio and heavy-duty large-surfaceheat exchanger

Low-noisethanks to a special nozzle geometry and primarypressure level 150 - 200 Pa; a sound pressure levelbelow 35 dB(A) may be achieved

Fire safetyEntirely made of sheet steel with non-combustiblenozzles

Air outlet on secondary air sideThanks to high induction ratio low temperature differ-ences between supply air and room; direction of diffusedair continuously adjustable between heating and coolingmode; in the cooling mode splitting of the supply air jetsinto highly inductive individual jets; high flexibility with re-gard to adaptation of the diffuser to installation positionand height

Adjustable primary air flowthrough open/shut operation of the absolutely tightlyclosing primary air shut-off flap on the unit's entrancesocket.




Active chilled beams and induction units for ceiling installationCeiling induction unit type HFM 2500

Technical Data

Δp[Pa]

VP[m3/h]

LwA[dB(A)]

LpA***[dB(A)]

QP/ΔtP[W/K]

Qk/Δtw[W/K]

QP*[W]

Qk**[W]

wok/Δpw[kg/h/kPa]

200 700 45 35 233 425 1400 5100 1500 / 24

200 1000 47 37 333 500 2000 6000 1500 / 24

200 1400 52 42 467 545 2800 6540 1500 / 24

Weight: 300 kg including water content* Primary cooling capacity at room temperature 26 _C and primary air temperature 20 _C** Secondary cooling capacity at room temperature 26 _C and water inlet temperature 14 _C*** Room damping 10 dB for 500 m3 cubic content/unit and average reverberation period of 2 secs.

Legend

p - static pressure on the primary air socket

VP - primary air flow rate (10%)LwA - A-weighted sound power level (3dB)LpA - A-weighted sound pressure level

with a 10 dB room damping

QP - primary cooling capacity

Qk - secondary cooling capacity(heat exchanger) (5%)

wok - standard water flow rate

t - temperature difference between suction airtemp. before entering the heat exchangerand water supply

tP - temperature differencebetween room air and water inlet

Control Examples- Air-side switching of the primary air flow through shut-offflaps on the induction units (requires pressure regulationinside the supply air line and a frequencyconverter on thefan)

- Group of units with joint flow control valve (reduction ofmaintenance spots)

- Adjustment to load throughwatermass flow and/or on/offswitching of units

- Adjustment of air outlet through continuous signal de-pending on the load type (partial load, heating load)

Dimensions

150

315

2730

2540

1317

142

457

118.5

198

696.5164

148

1977

345

Heat exchanger connections DN 25

Specification and Schedule of Prices Active Chilled Beam Type HDF-4 Edition 10.7.2008 / page 1

© LTG Aktiengesellschaft, Grenzstraße 7, D-70435 Stuttgart, Tel.: +49 / 711 / 8201-0, Fax.: +49 / 711 / 8201-720 Ausgaben mit früherem Datum werden hiermit ungültig. Technische Änderungen vorbehalten. Former editions are invalid. Subject to technical modifications.

Qty. Description Unit Price

in € Total price

in €

Active chilled beam for 4-Pipe-Systems

for low intermediate ceilings Type: HDF-4 (heating and cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral

NW 100 mm primary air socket, measuring device for flow rate determina-tion, unit suspension via bores.

- Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-

cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with separate water circuits, 4-pipe system, designed for

cooling and heating, consisting of copper tubes with press-fitted aluminum fins; operating pressure up to 12 bar, water-side connection (12 mm diam.) via quick release coupling; visible surfaces black coated.

- Air diffuser frame of extruded aluminum profiles for horizontal supply air

diffusion; transition to suspended ceiling either overlap or non-overlap; easily removable secondary air grille, expanded metal version, secured by safety suspension; visible surfaces powder coated similar to RAL.

- Flexible nozzle design based on the primary air flow rate and preselected

primary pressure (end pressure).

Outside dimensions [WxH]: 319 x 229 mm (flanged installation) 295 x 229 mm (recessed installation)

Sizes:

o 1200 o 1500 o 1800 o 2100 o 2400 Manufacturer: LTG Aktiengesellschaft Series: Active Chilled beam Type: HDF-4

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in € Total price

in €

Variants: o Unit HDF-N

Low height installation (construction height 160 mm), remaining details as standard version

o Unit HDF-L Fresh air connection, details as standard version, yet without heat exchanger, for fresh air supply only

o Unit HDF-B Blind diffuser, looks like the standard version. Without any A/C functions, serves to bridge the gap between A/C units in case of an installation as a continued band

Accessories/special version (optional, at extra charge): o Face end caps including pins for flush alignment of unit. o Return air connection DN 100 at the top o Flexible hose, oxygen diffusion tight version

(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water up to supply temperatures of 50 °C, operating pressure 10 bar

o Flexible hose, oxygen diffusion tight version (Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water

or standard hose: o Flexible hose, (EPDM-core), with stainless steel braiding,

quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water

o Flexible hose, (EPDM-core), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water

o Dummy grille for inactive sections or on request with return air connection o 2 x Straight‐way valve with electro‐thermal actuator o 2 x 3‐way valve with electro‐thermal actuator o 2 x Straight‐way valve with 3‐point actuator o 2 x 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1

-3-



Technical Specification

Primary air pressure [Pa]

Primary air flow rate [m3/h]

Sound power LWA [dB(A)]

Sound pressure level at 18 m2 Sabine LpA [dB(A)]

Cooling mode

Induction air temperature [°C]

Primary air temperature [°C]

Water supply temperature [°C]

Cooling capacity [W]

Heating mode



Heating capacity [W]

Natural convection [W]




in € Total price

in €


for low intermediate ceilings Type: HDF-2 (heating or cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral

NW 100 mm primary air socket, measuring device for flow rate determina-tion, unit suspension via bores.

- Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-

cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with one water circuit, 2-pipe system, designed for cooling

or heating, consisting of copper tubes with press-fitted aluminum fins; operat-ing pressure up to 12 bar, water-side connection (12 mm diam.) via quick re-lease coupling; visible surfaces black coated.




primary pressure (end pressure).

Outside dimensions [WxH]: 319 x 229 mm (flanged installation) 295 x 229 mm (recessed installation)

Sizes:

o 1200 o 1500 o 1800 o 2100 o 2400 Manufacturer: LTG Aktiengesellschaft Series: Active Chilled beam Type: HDF-2

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in € Total price

in €

Variants: o Unit HDF-N

Low height installation (construction height 160 mm), remaining details as standard version

o Unit HDF-L Fresh air connection, details as standard version, yet without heat exchanger, for fresh air supply only


Accessories/special version (optional, at extra charge): o Face end caps including pins for flush alignment of unit. o Return air connection DN 100 at the top o Flexible hose, oxygen diffusion tight version






o Dummy grille for inactive sections or on request with return air connection o Straight‐way valve with electro‐thermal actuator o 3‐way valve with electro‐thermal actuator o Straight‐way valve with 3‐point actuator o 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1

-3-








Cooling mode





Heating mode





Specification and Schedule of Prices Active Chilled Beam Type HDF-2/600 Edition 10.11.2010 / page 1 of 3

© LTG Aktiengesellschaft · Grenzstraße 7 · D-70435 Stuttgart · Tel.: +49 / 711 / 8201-0 · Fax.: +49 / 711 / 8201-720 Internet: www.LTG-AG.de · E-Mail: [email protected] Former editions are invalid · Subject to technical modifications

Qty. Description Unit price in €

Total pricein €

Active chilled beam for 2-pipe-systems for low intermediate ceilings Type: HDF-2/600 (heating or cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction principle, blowing out air in four directions, consisting of the following compo-nents: - Primary air box of galvanized sheet steel, lateral NW 125 mm primary air

socket, measuring device for flow rate determination, unit suspension via bores.

- Solid, torsion resistant nozzle box of galvanized, black coated sheet steel

including acoustically optimized non-combustible high-induction metal nozzles.

- Heat exchanger with one water circuit, 2-pipe system, designed for cooling

or heating, consisting of copper tubes with press-fitted aluminum fins; operating pressure up to 12 bar, water-side connection (Ø 12 mm) via quick release coupling; visible surfaces black coated.




primary pressure (end pressure). Outside dimensions [length x width x height]: 600 mm grid 598 x 1198 x 199 mm (edge-to-edge installation, grid ceiling) 593 x 1193 x 199 mm (T-bar ceiling, laid on top) 598 x 1198 x 199 mm (T-bar, concealed installation) 625 mm grid 623 x 1248 x 199 mm (edge-to-edge installation, grid ceiling) 618 x 1243 x 199 mm (T-bar ceiling, laid on top) 623 x 1248 x 199 mm (T-bar, concealed installation) Ceiling cut-out 570 x 1170 mm (plasterboard ceiling) 598 x 1198 x 199 mm Manufacturer: LTG Aktiengesellschaft Series: Active Chilled beam Type: HDF-2/600



Qty. Description Unit Price in €

Total pricein €

Variants: o Unit HDF-L

Fresh air connection, details as standard version, yet without heat exchanger, for fresh air supply only


Accessories/special version (optional, at extra charge): o Flexible hose, oxygen diffusion tight version

(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, without insulation for hot water up to supply temperatures of +50 °C, operating pressure 10 bar

o Flexible hose, oxygen diffusion tight version (Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water or standard hose:

o Flexible hose, (EPDM-core), with stainless steel braiding,



o Dummy grille for inactive sections or on request with return air connection o Straight‐way valve with electro‐thermal actuator o 3‐way valve with electro‐thermal actuator o Straight‐way valve with 3‐point actuator o 3‐way valve with 3‐point actuator o Throttling damper KLXG 125



Qty. Description Unit Price in €

Total pricein €





Sound pressure level at 18 m2 Sabine LpA [dB(A)] Cooling mode




Cooling capacity [W] Heating mode





Specification and Schedule of Prices Active Chilled Beam Type HDC 1000-4 Edition 10.7.2008 / page 1



in € Total price

in €


for low intermediate ceilings Type: HDC 1000-4 (heating and cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral

NW 100 mm primary air socket, unit suspension via bores. - Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-

cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with separate water circuits, 4-pipe system, designed for

cooling and heating, consisting of copper tubes with press-fitted aluminum fins; operating pressure up to 12 bar, water-side connection (12 mm diam.) via quick release coupling; visible surfaces black coated.

- Combined air inlet/outlet grille, similar to RAL, for band grid ceilings, re-

movable for easy nozzle and heat exchanger cleaning. Valves and electro-thermal drives may be revised after removal of the air outlet grille.


primary pressure (end pressure). Outside dimensions 1240 x 340 x 240 mm (flanged installation) 1198 x 298 x 240 mm (recessed installation) Manufacturer: LTG Aktiengesellschaft Series: Aktiver Kühlbalken Type: HDC 1000-4

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in € Total price

in €







o Dummy grille for inactive sections o 2 x Straight‐way valve with electro‐thermal actuator o 2 x 3‐way valve with electro‐thermal actuator o 2 x Straight‐way valve with 3‐point actuator o 2 x 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1

-3-








Cooling mode





Heating mode








in € Total price

in €


for low intermediate ceilings Type: HDC 1000-2 (heating or cooling) Compact chilled beam including a multi-row air/water heat exchanger, suitable for temperature control and ventilation of rooms based on the induction prin-ciple, consisting of the following components: - Primary air box aus verzinktem Stahlblech, of galvanized sheet steel, lateral

NW 100 mm primary air socket, unit suspension via bores. - Solid, torsion resistant nozzle box of galvanized, black coated sheet steel in-

cluding acoustically optimized non-combustible high-induction metal nozzles. - Heat exchanger with one water circuit, 2-pipe system, designed for cooling

or heating, consisting of copper tubes with press-fitted aluminum fins; operat-ing pressure up to 12 bar, water-side connection (12 mm diam.) via quick re-lease coupling; visible surfaces black coated.

- Combined air inlet/outlet grille, similar to RAL, for band grid ceilings, re-

movable for easy nozzle and heat exchanger cleaning. Valves and electro-thermal drives may be revised after removal of the air outlet grille.


primary pressure (end pressure). Outside dimensions 1240 x 340 x 240 mm (flanged installation) 1198 x 298 x 240 mm (recessed installation) Manufacturer: LTG Aktiengesellschaft Series: Aktiver Kühlbalken Type: HDC 1000-2

-2-




in € Total price

in €







o Dummy grille for inactive sections o Straight‐way valve with electro‐thermal actuator o 3‐way valve with electro‐thermal actuator o Straight‐way valve with 3‐point actuator o 3‐way valve with 3‐point actuator o Throttling damper KLXG 100/1

-3-








Cooling mode





Heating mode





Specification and Schedule of Prices A/C System Indivent® Type LHG Edition 2.2.2009 / page 1



in € Total price

in €

Compact ceiling air diffuser system with integrated cooling for a steady primary air flow rate to produce a combined mixed air/displacement air flow at low room air speed e and modest vertical temperature gradients in the space. Consisting of: induction unit with 2‐pipe heat exchanger for high capacity, made from copper pipe with pressed‐on aluminum fins for a maximum operating pressure of 10 bar in the standard version, to be connected to the chilled water system and primary air of an A/C unit, heat exchanger connections ½“ internal thread, connections for water either on the right or left, large‐surface condensate receiver of galva-nized sheet steel, 40 mm high. Air diffuser with linear adjustment composed of cylindrical slot nozzles in na-turally anodized aluminum profiles, direction of air flow easily re‐adjustable by 180° even subsequently without the need of any additional mechanism, indivi-dually factory‐set, alternating nozzles providing flow patterns from flat ceiling jet to wide spreading in 17 individual jets per meter diffuser length, with air dis-tribution box of galvanized sheet steel. Sizes: o 500 o 630 o 800 o 1000 o 1250 Manufacturer: LTG Aktiengesellschaft Series: LTG Klimasystem Indivent® Type: LHG

-2-




in € Total price

in €

Accessories/special version (optional, at extra charge):

o Unit with secondary air filter o Condensate receiver with drainage socket o Primary air throttling damper KLX 100/1 o Primary air throttling damper KLI 100 o Flexible hose, oxygen diffusion tight version

(Oxiblock, PE), with stainless steel braiding, quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water


quick release coupling on one side, other side optional, length: 500 mm, with insulation for cold water

o Aluminum return air grille, free section 85%, rounded edges, deflection through fins, natural color anodized Length _______ mm Width ________ mm

Installation type: o vertical/horizontal type LDC o Frame for return air grille: o Special version grille / frame powder coated similar to RAL-No. ______ o Air connection socket from behind o Primary air socket of sheet metal for increased fire safety o Primary air nozzles of aluminum for increased fire safety o Aluminum profile finish: o painted similar to RAL-No.: _____ o anodized _____ o chromium-plated o Profile adaptation to the ceiling using: o special profile No.: _____ o additional profile No.: _____ o End piece for profile face side: o 15 mm wide o 25 mm wide o Variable diffuser neck length (max. 170 mm) Required length _________ mm

-3-




in € Total price

in €

Variants: Air‐side control: Indivent LHG with bypass dampers, galvanized steel, with elastic sealing faces, on maintenance-free, low‐friction ball-bearings. o LHG-P: Damper control through pneumatic LTG actuator.

Operating range: 0.2 ... 1.0 bar. o LHG-B: Damper control through electric continous actuator,

type Belimo LM 24 SR. Control range: DC 2 ..10 V Operating voltage: 24 V o LHG-L: Damper control through electric actuator, type Siemens Landis + Stäfa GDB 131.1E. Control type: 3‐point. Operating voltag : 24 V. Water‐side control: without bypass dampers using a customer‐provided precision control valve. o LHG-O: without bypass dampers.




Primary air flow rate [m³/h]

Static pressure at the primary socket [Pa]

Sound power oft he unit (LWA) [dB(A)]

Cooling mode:

Room temperature [°C]


Total cooling capacity/unit [W]

Cooling capacity primary air [W]

Cooling capacity of the heat exchanger [W]

Suction air temperature [°C]

Cold water flow rate [kg/h]

Water-side pressure loss [kPa]

Unit specifications:

Fabr. / type / size

Length / height / depth of the unit [mm]



E LTG Aktiengesellschaft ⋅ Grenzstraße 7 ⋅ D-70435 Stuttgart ⋅ +49 (711) 8201-0 ⋅ Fax -720Internet: www.LTG-AG.de ⋅ E-Mail: [email protected] ⋅Printed in Germany ⋅ Former editions are invalid ⋅ Subject to technical modifications.

Locations and Representatives

GermanyCentral Office (Frankfurt)Sales area: PLZ 54, 55, 60, 63, 64, 66 - 69, 97Sontraer Str. 27 · D-60386 Frankfurt am MainHerr Bergmann +49 (69) 94 20 19-12, Fax -10E-mail: [email protected]

Central Office (Herborn)Sales area:: PLZ 30, 31, 34-38, 56, 57, 61, 65Sperberweg 16 · D-35745 HerbornHerr Hartmann +49 (2772) 570-725, Fax -727E-mail: [email protected]

Eastern Office (Berlin)Sales area:: PLZ 10 - 25, 29, 39Eisenhutweg 51a · D-12487 BerlinHerr Linke +49 (30) 63 22 87-74, Fax -75E-mail: [email protected]

Eastern Office (Chemnitz)Sales area:: PLZ 01 - 09, 98, 99Johannes-Ebert-Straße · 20 D-09128 ChemnitzHerr Schenfeld +49 (371) 77118-01, Fax -02E-mail: [email protected]

Southern OfficeSales area:: PLZ 70 - 96Grenzstraße 7 · D-70435 StuttgartHerr Gau +49 (711) 8201-209, Fax -210E-mail: [email protected]

Sales area: PLZ 80 - 87, 90 - 96Grenzstraße 7 · D-70435 StuttgartHerr Flaadt +49 (711) 8201-752, Fax -210E-Mail: [email protected]

Western OfficeVerkaufsgebiet: PLZ 26 - 28, 32, 33, 40 - 53, 58 - 59Baststraße 30 · D-46119 Oberhausen/Rheinl.Herr Perenz +49 (208) 30431-55, Fax -56E-mail: [email protected]

AustriaKTG Klimatechnische Gesellschaft mbHSchubertstraße 13 · A-2126 Ladendorf +43 (2575) 21089, Fax (02575) 21022E-Mail: [email protected]

Great BritainMAP Motorised Air Products Ltd.Unit 5A · Sopwith CrescentWickford Business Park · Wickford GB-Essex SS11 8YU +44 (1268) 57 44 42, Fax +44 (1268) 57 44 43E-Mail: [email protected]

NetherlandsOpticlima Systems b.v.Leeuwerikstraat 110 · NL-3853 AG Ermelo +31 (341) 493969, Fax +31 (341) 493931E-Mail: [email protected]

PolandHTK Went Sp.z.o.o.ul. Chopina 13/3 · PL-30047 Krakow +48 (12) 632 31 32, Fax +48 (12) 632 81 93E-Mail: [email protected]

PortugalArGelo S. A.R. Luis Pastor de Macedo · Lote 28 B, P-1750-158 Lisboa +351 (21) 752 01 20, Fax +351 (21) 752 01 29E-Mail: [email protected]

SwitzerlandLaminair AGKirchbergstrasse 105 · CH-3400 Burgdorf +41 (34) 420 02-10, Fax +41 (34) 420 02-11E-Mail: [email protected]

TurkeyStep Müh. Yapi Ltd.Barbaros Mah. · Kayacan Sokak No. 10TR-34746 Yenisahra-Atasehir-Istanbul +90 (216) 470 0070, Fax +90 (216) 470 0525E-Mail: [email protected]

The Program for Room Air TechnologyKey componentsAir diffusers for ceilings, walls and floors: LTG System clean®,linear diffusers, displacement air diffusers, swirl diffusersCoandaventR · LTG chilled beam cool wave® · Induction unitsKlimaventR · Induction unit CoandatrolR · Fancoil units Raum-luft · Ceiling fan coil units VentotelR · Decentralized facadeventilation units UniventR · Airflow control units · labair®

system: components for lab ventilation

LTG Engineering ServicesTechnical services for investors, architects, engineers andplant builders during design, construction and operation ofbuildings. Reliable and precise data relating to the ventila-tion of air conditioning system are given already beforerealization of the project, determined by measurements,calculations, building simulations and experiments.

The Program for Process Air TechnologyKey componentsAxial, radial and tangential fans · Fahrtwind Simulators ·LTG Filtration Technology: fans, suction nozzles,dampers,· filters, separators, compactors · LTG Humidifi-cation Technology: air humidifiers, product humidifiers

LTG Engineering ServicesTechnical services during development and operation ofassembly groups,machines and plants · Analysis, simula-tion, optimization · Customized solutions · Mobile filtrationlab / filter engineering on site

active chilled beams induction units · active chilled beams and induction units for ceiling...

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