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LTG Aktiengesellschaft
Air Diffusers Type LDU-W / LDU-W-H

Air Diffusers Type LDU-W / LDU-W-H

Product catalog summary

Overview: This document outlines the technical specifications and installation guidelines for LTG Aktiengesellschaft's floor-mounted air diffusers, specifically the LDU-W and LDU-W/H models. These diffusers are designed for environments with significant temperature differences between supply and indoor air, providing ventilation, heating, and cooling solutions.

Application and Installation: The diffusers are ideal for use in office and conference rooms, as well as entrance halls. They are best installed alongside facades and interior walls, flush-mounted in false floors or floor cavities. The high-induction linear diffuser design ensures efficient air distribution, quickly reducing air speed and temperature differentials.

Functionality and Advantages: These diffusers create a mixed air stream that enhances both thermal and acoustic comfort. They offer various grille options for different appearances and integrate seamlessly with false floors. Key features include easy cleaning, adjustable throttle dampers, and project-specific adaptations.

Product Specifications: The LDU-W model is available without a reheater, while the LDU-W/H includes an integrated reheater. Both models are constructed from galvanized sheet steel, with options for aluminum or stainless steel grilles. They feature height-adjustable support feet and compatibility with standard radiator valves for control.

Dimensions and Selection: Detailed dimensions for both LDU-W and LDU-W/H models are provided, with various lengths and grille options. Selection charts assist in choosing the appropriate model based on air flow rates and connection sizes.

Technical Data: The document includes technical data for different sizes, detailing air flow rates, pressure loss, sound levels, and heating capacities. Charts illustrate the relationship between water flow rates and heating capacity, as well as water-side pressure loss.

Nomenclature: A detailed nomenclature section explains the coding system for specifying different diffuser configurations, including reheater presence, slot rows, sizes, grille types, and connection details.

Maintenance: Maintenance involves easy removal of the ventilation grille and air outlet plate for cleaning, adhering to VDI 6022 standards.

Specification Overview: The document details the specifications and pricing for the floor-mounted air diffuser type LDU-W, including a version with an integrated reheater. It is designed for high-induction mixed air ventilation, suitable for heating and cooling with significant temperature differences between supply and ambient air.

Key Features:

High-induction air diffuser optimized for mixed air ventilation near facades.
Suitable for flush mounting in false floors or floor cavities.
Capable of handling high temperature differences (+15 to -8 K).
Includes a torsion-resistant tray of galvanized sheet steel with reinforced edges.
Foot traffic resistant floor grille made of aluminum, serving as an inspection opening.
Diffuser element for creating individual linear jets.
Continuously height-adjustable casing feet with noise insulation.

Technical Data:

Primary air temperature and flow rate specifications.
Air-side and water-side pressure loss details.
Heating capacity and sound power levels.

Special Versions and Accessories:

Options for casing materials and grille types (stainless steel, aluminum, wood).
Adapter pieces and casing feet available on request.

Manufacturer Information: LTG Aktiengesellschaft, based in Stuttgart, Germany, provides contact details for various regional offices across Germany and international representatives in countries like Austria, Great Britain, Netherlands, Poland, Portugal, Switzerland, and Turkey.

Additional Services:

LTG offers engineering services for design, construction, and operation of HVAC systems.
Technical services include analysis, simulation, and optimization for process air technology.

Catalog excerpts

Technical Documentation Floor-mounted air diffusers, type LDU-W / LDU-W/H LTG Aktiengesellschaft D - 70435 Stuttgart, Grenzstraße 7 +49 (711) 82 01-0, Fax +49 (711) 82 01-720 Internet: www.LTG-AG.de E-Mail: [email protected] LTG Incorporated 105 Corporate Drive, Suite E Spartanburg S.C., 29303 USA +1 (864) 599-6340, Fax +1 (864) 599-6344 Internet: www.LTG-INC.net E-Mail: [email protected]

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W and LDU-W/H Content Application, installation/positioning, functionality, advantages Product overview, specifications Dimensions type LDU-W Selection type LDU-W Dimensions type LDU-W/H Technical data type LDU-W/H Notes Dimensions stated in this brochure are in mm. Dimensions stated in this brochure are subject to General Tolerances according to DIN ISO 2768-vL. Straightness and twist tolerances for extruded aluminum profiles according to DIN EN 12020-2. Length tolerance: The surface finishes meet standard indoor...

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W and LDU-W/H View of unit Functionality The high-induction linear diffuser splits the supply air in diverging individual jets in a localized manner in parallel to the facade. Air speed and temperature differential are reduced rapidly. In the cooling mode, the air jets’ limited divergence creates a mixed air stream close to the facade or wall, forming a low level displacement flow in the occupied zone. This flow replaces air that "plumes" to high level from heat sources and occupants. Application Ventilation, heating...

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W and LDU-W/H Product overview, specifications Type LDU-W Type LDU-W/H Without reheater With integrated reheater Standard version Standard version Special version 800 - 1400 mm, lateral air connection sockets 850 - 1450 mm, lateral air connection sockets Tray Length Material Air connection Support feet Sheet steel, galvanized Coated black, stainless steel incl. throttle, lateral incl. throttle, below 4 integrated feet, height adjustable Ventilation grille foot traffic resistant, installation in line in combination...

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W Dimensions, 3 slots, lateral air connection Lateral view (left side) Front view Height adjustable Isometric view Connection with damper (regulating device) Foot fixing link B [mm] Aluminum linear grille: Stainless steel grille Aluminum roller grille H [mm] Aluminum linear grille: Stainless steel grille Aluminum roller grille * Other dimensions on request The number of air connections depends on flow rate and model size (refer to Dimensioning, page 6 and the following ones). E LTG Aktiengesellschaft Grenzstraße...

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W Selection type LDU-W 3/1000, 3 slots, length 1000 mm, connection 3 x Ø 99 Damper closed Damper open 30° Damper open Selection type LDU-W 3/1200, 3 slots, length 1200 mm, connection 3 x Ø 99 Damper closed Damper open 30° Damper open E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Internet: www.LTG-AG.de E-Mail: [email protected] Printed in Germany · Former editions are invalid · Subject to technical modifications

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W Selection type LDU-W 4/1000, 4 slots, length 1000 mm, connection 3 x Ø 99 Damper closed Damper open 30° Damper open Selection type LDU-W 4/1200, 4 slots, length 1200 mm, connection 3 x Ø 99 Damper closed Damper open 30° Damper open E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Internet: www.LTG-AG.de E-Mail: [email protected] Printed in Germany · Former editions are invalid · Subject to technical modifications

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W Selection type LDU-W 5/1000, 5 slots, length 1000 mm, connection 4 x Ø 99 Damper closed Damper open 30° Damper open Selection type LDU-W 5/1200, 5 slots, length 1200 mm, connection 4 x Ø 99 Damper closed Damper open 30° Damper open E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Internet: www.LTG-AG.de E-Mail: [email protected] Printed in Germany · Former editions are invalid · Subject to technical modifications

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W/H with reheater Dimensions Front view Lateral view (left side) Height adjustable Isometric view Connection with damper (regulating device) Foot fixing link B [mm] Aluminum linear grille: Stainless steel grille: Aluminum roller grille: H [mm] Aluminum linear grille: Stainless steel grille: Aluminum roller grille: * Other dimensions o request The number of air connections depends on flow rate and model size (refer to Dimensioning, pages 6 and the following ones). E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart...

Open the catalog to page 9

The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W/H with reheater Technical data size 800, connection 2 x Ø 99 VP [m3/h] Technical data size 1000, connection 3 x Ø 99 VP [m3/h] Technical data size 1200, connection 4 x Ø 99 VP [m3/h] Technical data size 1400, connection 5 x Ø 99 VP [m3/h] With 60 °C water supply temperature, 20 °C primary air temperature and 20 C room temperature The charts show examples for the unit design. A special selection program is available for other flow rates, primary pressures, temperatures and water flow rates. Legend - primary air...

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The Innovation Company LTG Aktiengesellschaft Floor-mounted air diffusers type LDU-W/H with reheater Capacity in % of the nominal capacity Q Capacity with different water flow rates Flow rate in % of the standard flow rate w (100 % = 150 kg/h) Water-side pressure loss with different water flow rates Size 800 Size 1000 Size 1200 Water-side pressure loss ΔpW [kPa] Water flow rate w [kg/h] E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Internet: www.LTG-AG.de E-Mail: [email protected] Printed in Germany · Former editions are invalid · Subject to technical modifications...

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Air Diffusers Type LDU-W / LDU-W-H

Air Diffusers Type LDU-W / LDU-W-H

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