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LTG Aktiengesellschaft Comfort Air Technology Innovative Solutions for Humans and Products. Air-Water Systems Air Diffusers Air Distribution

LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

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Page 1: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

LTG Aktiengesellschaft

Comfort Air Technology

Innovative Solutions for Humans and Products.

Air-Water Systems ∙ Air Diffusers ∙ Air Distribution

Page 2: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 32

LTG Comfort Air Technology Products meet highest Standards for Quality and Efficiency.

For more than 90 years, LTG has been pioneer in air con-ditioning technology, with its ground-breaking innovations always one step ahead of the competition.

To create best conditions for people and processes, LTG Comfort Air Technology produces customised solutions that inspire – with Air-Water Systems, Air Diffusers and Products for Air Distribution.

Be it the Space Lab, Egyptian pyramids or high-speed trains, office buildings of all sizes, concert halls, historic buildings or production processes in a variety of industries. If the goal is to make improvements for people and products with air, LTG designs tailor-made solutions that are greeted with enthusiasm.

LTG AktiengesellschaftInnovative Solutions for Humans and Products.

LTG Comfort Air Technology

Air-Water Systems

Air Diffusers

Air Distribution

9

21

29

Page 3: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 54

Country with LTG branch

Country with LTG sales partner

Direct sales

LTG AktiengesellschaftInnovative Solutions for Humans and Products.

1919: Dr. Albert Klein, co-worker of Dr. Willis Carrier, USA, and pioneer of air technology filed first patent for an induction system. Until today induc-tion units are called „High-Klein“ and „Low-Klein“ in the USA

1924: Foundation of LTG as first specialised company in Europe for air con-ditioning systems. Special department for development of air technol-gy components and systems since end of the 60´s.

1984: 250.000th induction unit is produced

1999: LTG Aktiengesellschaft Bundling of all component and development activities as one of the

leading suppliers for air conditioning solutions in Comfort and Pro-cess Air Technology.

Today LTG holds nearly 50 patents (1 for every 3rd employee) – which shows the power of innovation within the company. LTG is known as a reliable partner for high quality products and great expertise for research and development and Engineering Services.

LTG AktiengesellschaftHistory

LTG innovations through the years

LTG – your reliable partner worldwide

1968 1972 1993 1994

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1996 1997 2001 2009 2010/11 2012 2013 2015

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LTG Aktiengesellschaft has considerable share in air technology development in general – its engineers leave deep footprints with trendsetting patents:

LTG IncorporatedSpartanburg, S. C.,USA

Headquarters StuttgartSales Back Office, Product Manag. Administration

R&D / Laboratory Stgt. Production, Weil d. Stadt

Page 4: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 76

Mixed/Displ. Air FlowTangential Air FlowDisplacement Air Flow

Sup

ply

Air

/m S

ill

Cooling capacity/m Sill

0

Displacement Air Flow

Tangential Air Flow

Mixed/Displ. Air Flow

LTG products meet highest standards for quality and efficiency

For 90 years, LTG has led the way of air and climate technology, always a step ahead with trailblazing innova-tions. When it is crucial to achieve ideal environmental conditions for people and products, LTG creates inspi-ring, tailor-made comfort air technology solutions: These include air-water systems (such as induction units and fan coil units), products for air distribution (flow rate controllers and shut-off valves) and air diffusers.

Air-Water Systems

Air Diffusers

Air Distribution

Example System C of the VDI 3804:Room temperature and ventilation withinduction devices

In the VDI 3804 all essential ventilation and air condition concepts are compared. To VDI 3804´s development LTG Aktiengesellschaft essentially contributed. On this basis, we offer high-performance products for any requi-rement and installation situation. These include air-water systems, air diffusers or air distribution components. LTG engineering services provide you with decades of expert know-how in comfort air and process air techno-logy, as well as a state-of-the-art lab. We will gladly support you in selection of the best system. Contact us!

LTG System Solutions & Innovations

Mixed/Displ. Air FlowTangential Air FlowDisplacement Air Flow

The mixed/displacement air flow developed by LTG and assumed into the VDI 3804 permits high cooling output at high thermal comfort. It can be implemented in any LTG device type with optimised air distributors. The above chart shows the areas of application of different flow forms that are es-sentially defined by thermal comfort. The ideal flow shape for the project-specific parameter cooling output and supply air flow rate can be implemented with different LTG air-water systems then. We per-form optimisation for special requirements within the scope of our engineering services.

LTG drives development in comfort air with basic innovations

Mixed/displacement ventilationin an extended comfort zone

Return Air

ColdWater

Primary Air

LTG SystemIndiventHybrid displacement ventilation

Highest comfort by combination of mixed and dis-placement flow! With LTG induction devices or fan coil units in combination with our highly inductive LDB linear diffusers permits sophisticated imple-mentation of this comfortable room flow.

Appearance and room effect are essentially de-termined by the architecture. LTG SystemDesign permits different technical solutions for room air conditioning in different building areas under one visually consistent grid.

LTG SystemDesignFlexible technology for floor supply systems with a consistent appearance

Floor Linear Di�user LDU

Heating Convector SKB

Façade Ventilation Unit FVD/FVP

Fan Coil Unit VKB

Induction Unit HFB

indiventsystem

Page 5: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 98

LTG Air-Water Systems

– Induction Units/ Chilled beams

Ceiling Sill Floor

Induction – Fan Coil Units

Ceiling Sill Floor

FanPower

Best air conditioning solutions for any room situationUnique performance and efficiency, comfort and acoustics.

With its comprehensive range of central and decentralised air-water systems, LTG offers consultants and architects a customised air conditioning concept for all applications and installation situations.

The innovative LTG air-water systems make it possible to meet sophisticated requirements for state-of-the-art buildings and to clearly lower the energy consumption of renovation objects with optimised performance, low noise level, low air speeds and highest comfort.

HDF

LHG

HDF

HFV

HFG

QHG

HFB VKL

VKH

VKE

VFC

QVC

VKB

SKB

Page 6: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft 1110

Induction Technology – comfortable and efficient

LTG induction units have been developed further continually since the first patent was registered by founder Dr. Albert Klein for an induction plant in 1915.

Benefits

� No additional fan needed in the unit

� Silent, long service life and low maintenance

� Low energy costs / variable ventilation

� High cooling and heating output

� Cooling / heating and fresh air supply in one unit

Induction Units

Induction

The Induction Principle

Air flowing through a nozzle forms a free jet. It induces the surrounding air layer along at its edges and thus enlarges the flowing air volume. This „induction“ takes place within the induction device. A special construction entrains room air (secondary air) through a heat exchanger, where it is cooled or heated. Together with the fresh air (primary air) the supply air then returns to the room for a comfortable climate.

Induction principleInduction device chart

The Evolution of Induction

LTG Air-Water Systems Induction Units / Chilled Beams

The System SmartFlow

The LTG System SmartFlow offers best comfort and energy consumption even under changing load stations. The ideal flow form is selected depending on required cooling output and fresh air volume. For this, the air nozzles are opened and the cold water valves are controlled. This ensures best comfort, acoustics and energy efficiency for any load case with a single device. Manual (different room use) or automatic (occupancy or CO2-controlled) regulation is possible. In contrast to conventional induction technology, this permits adjustment of cooling output and fresh air supply to the specific requirements.

HFG / HFFsuite LHG SystemIndivent

Features / Application Use in ceiling compartments

Supply air system with LDB air diffuser

Functions Cooling / heating � �

Fresh air supply � �

Air Diffusion

Induction Units for Ceiling Installation

Benefits

Quiet as a whisper even at maximum power

High comfort through low air speed, even temperatures and low sound power levels

Maximum cooling capacity in a restricted space, even with condensate-free operation

Very low operation costs: energy-saving, maintenance-free and hard-wearing induction technology

High flexibility in room design, easy integration also economical for refurbishment

Room flow can be optimised easily by adjustable LDB linear diffusers

Efficient and silent ventilation, heating and cooling without a fan. LTG Induction Units ensure an optimum climate. The patented LTG System Indivent combines the benefits of induction technology in system combination with highly inductive LDB linear diffusers.

HFG / HFFsuite LHG

Product Data

Profiles and cylinders are available in all colour systems (e.g. RAL, Pantone …) and can be combined individually

indiventsystem

Page 7: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 1312

Benefits

Energy-efficient by low primary pressures and high cooling output

Silent: very high-performance at low noise level

Two-in-one: supply air and exhaust air in one unit

High thermal comfort

Maintenance-friendly, robust construction; no fan

Comfortable even in complex installation situations: LTG Chilled Beams warrant draft-free air conditioning even for critical projects.

HDF / HDC

Chilled Beams for Ceiling Installation

Product Data

LTG Air-Water Systems Induction Units / Chilled Beams

Benefits HFG

High comfort by LTG mixed/displacement ventilation

Many versions are suitable even for special require-ments like narrow or low sills

High heating / cooling output

Low-maintenance, proven and robust

Air volume / pressure can be selected individually

HFG enables you to develop comfortable air conditioning even for complex installation and room situations and is suitable for new construction and renovation objects.

HFG, HFV / HFVsf

Induction Units for Sill Installation

Benefits HFV / HFVsf

Highest energy efficiency by low primary pressures

Demand-controlled ventilation for all uses; easy change of use possible

Good client response through individual user influence

Economically and efficient even for renovation projects

High user comfort: fresh air and cooling output can be controlled, extremely low-noise operation

Variable installation in sill for existing or new projects

HDF HDC

Features / Application Diffusing from 2 or 4 sides Diffusing from one side, ceiling grid 300 mm

Functions Cooling / heating � �

Fresh air supply � �

Air Diffusion

� Standard

Product Data HFG HFV / HFVsf

Features / Application With constant flow rate Demand-controlled ventilation with variable flow rate

Options Diverse designs available; desiccant operation possible

Suction/discharge from/to different directions, opt. with displacement air

Functions Cooling / heating � �

Fresh air supply o o

Air Diffusion

� Standard o optional

Page 8: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 1514

Selection of possible grids and grilles

Aluminum linear grid in all anodised tones and colours

Aluminum rolling grid in all anodised tones and special look

Stainless steel linear grid

Wood rolling grid in different wood types

Benefits

Unit can be selected for difficult installation situations

High natural convection for heating without primary air (e.g. heating operation at night with the ventilation off)

Simplified maintenance via the floor grille and easy access to heat exchangers

With LTG SystemDesign: for a consistent look in all rooms, even with combination of different ventilation and air conditioning systems in the false floor (e.g. with VKB …)

Demand-controlled ventilation for all uses; easy change of use possible (System SmartFlow)

HFB – perfect for air conditioning of outer zones with façade glazing.

Induction Unit for Floor Installation

HFB / HFBsf

Features / Application Use in false floors

Functions Cooling / heating �

Fresh air supply o

Special functions (optional)

Diverse designs available / desiccant operation possible

Air Diffusion

� Standard o optional

Product Data

LTG Air-Water Systems Fan Coil Units

HFB / HFBsf

Fan Coil Units

FanPower

Benefits

� Best flow form, e.g. with displacement ventilation

� Demand-controlled air conditioning

� Low power consumption of the fan by smart EC-technology

� Rapid response for cooling and heating output

� Fresh air supply possible

� Part of LTG SystemDesign – for a consistent look

LTG fan coil units use both radial and cross-flow fans to implement the best flow and acoustics for different installation situations. Flexible and high-performance.

LTG fan convectors with cross-flow technology are characterised by a particularly even and large-area flow through the heat exchanger. Low pressure loss and low noise level with high cooling or heating output.

The latest drive technology generation (EC-technology) also permits capacity modulation at the lowest electrical energy consumption.

The Air Conditioning Classic – energy-efficient and low-noise

The principle: A fan conveys room air through a heat exchanger and cools or heats the room.

Air flow in the fan coil unit with cross-flowFan coil chart

Induction Units

Page 9: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 1716

LTG Air-Water Systems Fan Coil Units

Benefits

Outstanding flexibility in room design and unit installation, low space demand

Maintenance-friendly construction, low operation costs

High cooling output with low noise

Can be combined with LDB linear diffusers

Rapid response cooling possible

Low noise, high performance: the ideal fan coil solution for the ceiling installation inall kinds of rooms – from offices to hotel rooms.

Fan Coil Units for Ceiling Installation

HFB

VKH VKE

Features / Application Installation in ceiling compartments, specifically for hotels

To connect air diffusers

Functions Cooling / heating � �

Fresh air supply o o

Desiccant operation

� �

Air Diffusion

� Standard o optional

Product Data

VKE

VKH

Benefits

Unique combination of fan coil unit and high induction linear diffuser

Ambitious design: only a slim linear diffuser is visible and fan coil unit is hidden

High-performance at low noise level

Maintenance without additional inspection opening

Optimal solution for retrofitting, new construction and renovation

Hybrid displacement ventilation – customized air conditioning for any requirement.VKL combines the benefits of fan convectors in system combination with high-induction LDB linear diffusers.

Fan Coil Unit for Ceiling Installation

Features / Application Supply air via LDB linear diffusers

Functions Cooling / heating �

Fresh air supply o

Desiccant operation

Air Diffusion

� Standard o optional

Product Data VKL SystemIndivent

Profiles and cylinders are available in all colour systems (e.g. RAL, Pantone …) and can

be combined individually

VKL

indiventsystem

Page 10: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 1918

Benefits

Low noise and efficient thanks to energy-saving high-output fan (EC motor optional)

Compact size for use even under limited room conditions (low version)

Low-maintenance and extremely durable

Excellent robustness paired with elegance

Perfect thermal shielding due to direct air supply at the facade

Power meets comfort – and the highest requirements.

Fan Coil Unit for Floor Installation

Product data

LTG Air-Water Systems Fan Coil Units

VKB

VKB / SKB

Benefits VFC

Energy-efficient: high cooling output with low power consumption

Highest comfort by mixed/displacement ventilation

Maintenance-friendly construction

Suitable for narrow and low sills

Always the best flow form for every application case: VFC and QVC.

Fan Coil Units for Sill Installation

Product Data

Benefits QVC

Comfortable room climate by displacement ventilation

The thermal effect removes pollutants by displace-ment flow

Architectural design freedom

VFC QVC

Features / Application Available in different sizes and designs

Displacement flow for best room air pollutant removal

Functions Cooling / heating � �

Fresh air supply o o

Desiccant operation

o ‒

Air Diffusion

� Standard o optional

SKB

Features / Application Use in false floors / special designs available

Heating convector for free convection

Functions Cooling / heating � ‒ / �

Fresh air supply o o

Special functions (optional)

- Humidification / Desiccation - Electr. heating

Air Diffusion

� Standard o optional

QVCVFC

Page 11: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 2120© SAS International

LTG Air Diffusers

Outstanding performance under demanding conditions.Unsurpassed in comfort, acoustics and design.

Air diffusers are most important to the operation and efficiency of air conditioning and ventilation systems. They allow ideal distribution of purified air within a room, as well as effective removal of thermal loads – important criteria for health and well-being. Ideal choice of air diffuser is depen-dent on building type, building use and interior design specification.

Even under the most demanding conditions, LTG air diffusers meet all important requirements and set the benchmark for their class.

Linear Diffusers

LTG Air Diffusers

Outstanding performance under demanding conditions.Unsurpassed in comfort, acoustics and design.

Air diffusers are most important to the operation and efficiency of air conditioning and ventilation systems. They allow ideal distribution of purified air within a room, as well as effective removal of thermal loads – important criteria for health and well-being. Ideal choice of air diffuser is depen-dent on building type, building use and interior design specification.

Even under the most demanding conditions, LTG air diffusers meet all important requirements and set the benchmark for their class.

Linear Diffusers

Ceiling Wall Floor

LWmodule

Application-/Special solutions

LDB ILQsfLDU DSA/MSA

Page 12: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 2322

Linear Air Diffusers for Ceiling Installation

Benefits

Comfortable: high induction air diffusers ensure comfortable thermal environments, optimum fresh air supply and uniform temperature distribution

Quiet: aerodynamically optimised nozzles

Variable: limitless options for design, colour and surface appearance

Flexible: can be adjusted to individual conditions

LDB linear air diffusers with variable settings ensure effective ventilation and optimised air conditions.

LTG Air Diffusers Linear Diffusers

LDB 12clean LDB 12style LDB 20classic LDB 50maxx

Features / Application For high comfort, additi-onal slot in the diffuser border profile to reduce contamination around the diffuser

Completely out of metal, not flammable. Incon-spicuous installation in suspended ceilings

For high comfort For high ceilings and large volume flow rates

Number of slot rows 1 | 2 | 3 | 4 1 | 2 | 3 1 | 2 | 3 | 4 1 | 2 | 3

Air diffusion

Product data(Selection)

LTG System clean – unique and ingenious!

Contaminants within the room air like dust, tobacco smoke, carpet abrasions, dust or oil vapour deposit around the cei-ling and diffuser as a result of entrainment. The LTG System clean® prevents surface staining almost completely by provi-ding a screen of clean supply air across the ceiling.

Benefits: The costs of renovation and maintenance are considerably reduced.

Profiles and cylinders are available in all colour systems (e.g. RAL, Pantone …) and can be combined individually

Perfect integration in different drywall or metal/chilled ceiling solutions with high design demands with reduced defilement close to diffusers.

LDB

LDB 12style

Page 13: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 2524

Air Diffuser Combination for Wall Installation

LTG linear air diffusers meet highest requirements of comfort, acoustics and design. Linear diffusers for ceiling or wall Installation are equipped with the unique LTG Sys-tem clean®, which prevents visible accumulation of airborne particles in the vicinity of the diffuser and reduces costs for renovation and maintenance considerably (optional).

LTG Air Diffusers Linear Diffusers

Air Diffusers for Floor Installation

Benefits

Quiet and draught-free with highly efficient ventilation

Energy efficient: Thermal shielding of glass façades

A unified look meets exacting demands for attractive design

Ideal for raised access floors, easy to mount

From the office to the living room: Highly inductive LDU and LDU-W floor-mounted line-

air diffusers heat and cool rooms comfortably and draught-free.

Product Data LDU 30/…/. LDU-W LDU-W/H

Features Air connection Foot traffic resistant grille Foot traffic resistant grille and

integrated reheater

Volume flow rate

with L WA = 35 db(A) [m3/h]

75...85 | 120 size 800

80...100 | 140 size 1000

(1 | 2 slot rows)

up to 240...400 200...400

Integrated sound absorber � — —

Air connection incl. throttle � � �

Height-adjustable feet o � �

Air Diffusion

� Standard o optional

LDU-W

LDULWmodule

Sound absorber

Supply and return air combined

Benefits LWmodule

Effective: optimal ventilation always provides clean, fresh air

Quiet operation: integrated sound absorber for high cross-talk sound attenuation

Flexible: variable box shapes for different wall installation conditions – simple to mount and easy to maintainance

Box type Standard box L-shaped box T-shaped box

Special features

For low to medium

requirements of cross-

talk sound attenuation,

low installation height

For medium to high

requirements of cross-

talk sound attenuation

For high requirements

of cross-talk sound

attenuation

DesignsCombination: LWKmodule-... supply air/exhaust air

Single diffuser: LWEmodule-... supply air/exhaust air

Lengths of combination LWK

[mm] Standard lengths 550 • 800 • 1000 • 1200

Lengths of single diffuser LWE

[mm] Standard lengths 550 • 700 • 800 • 900 • 1000 • 1100 • 1200

T

H

T

H H

T

Page 14: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 2726

Industrial Air Diffuser

The new air diffuser ILQsf for the first time permits energy-saving on-demand ventila-tion of industrial buildings, sports facilities, lobbies, entrance and work areas.

LTG Air Diffusers Application Solutions

Ceiling-mounted diffusers

Benefits

Invisibly integrable into both acoustically perforated plate ceilings (DSA) and perforated metal ceilings (MSA)

Effective and draught-free ventilation of rooms with high comfort

Space-saving by low setup height of 210 mm

Low installation effort due to optimised integration into various ceiling systems

The first invisible air diffusers, integrated into drywall ceilings and metal ceilings.

Product Data DSA MSA

Flow rate range 130...260 160...400

Air connection socket 125 125...200

Size 600 x 600 530 x 530

Installation height 210 221

Perforation * 12/25R12/25Q8/18R8/18Q

R 8-18Rv 2.8-5.5

Air Diffusion

Benefits

Energy-saving thanks to smart demand-controlled ventilation: variable air flow rates with minimal working pressure yet high degree of comfort

Consistently high ventilation effectivity regardless of the flow rate and temperature of the air

Flexible: optionally with or without mechanically self-operated, motor-powered or manual adjustment for heating and cooling applications

Effective removal of thermal and material loads thanks to layered ventilation

ILQsf

ILQsf315 ILQsf500 ILQsf630

Connection Ø 250, 315 400, 500 630

Air flow rate with �p = 30Pa [m3/h] 1310 3400 5372

Sound power with �p = 30Pa [dB(A)] 63 64 66

Air flow rate with �p = 50Pa [m3/h] 1700 4370 7000

Sound power with �p = 50Pa [dB(A)] 66 69 67

Air Diffusion

Product Data

Installation on floor (cooling/heating)

Freely suspended (cooling/heating)

DSA /MSA

* other perforation on request

Page 15: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

© LTG Aktiengesellschaft© LTG Aktiengesellschaft 2928

Round Square

LTG Air Distribution

Flow Rate Controllers with LTG MAP Control System ActiveContol provide highest measuring precision at very short installation lengths.

All variable flow rate controllers are available with static or dynamic measuring principle.

Flow Rate Controllers

Round Square

Pressure Controllers

High quality control components with innovative flow technology. Unsurpassed in control precision and energy efficiency.

Air distribution products are essential for the economic and efficient operation of air condi-tioning and ventilation systems. They ensure optimum distribution of supply and return air while controlling and adjusting the air flow between the central AHU and space.

LTG flow rate and pressure controllers function effectively, even at low air speeds, with minimum space requirement and with advanced control concepts such as ventilation on demand or hybrid ventilation.

LTG Pressure Controllers balance extreme pressure level differences to ensure an ideal operation of a HVAC system.

VREactive VRFactive

VRDactive

DRE DRF

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© LTG Aktiengesellschaft 3130

Differential pressure + Damper setting = Flow rate

Contrary to common measuring techniques, the differential pressure is not measured using an upstream element such as orifice plate or differential pressure sensor.

Flow rate controllers VREactive and VRFactive measure the differential pressure directly in the damper blade area (stronger signal due to locally accelerated air flow).

Unique and Brilliant – LTG System ActiveControl

The differential pressure is measured in the damper blade area. This results in

– increased measuring signal due to the local acceleration of the air flow– highest measuring accuracy for small air flow rates– minimum pressure loss

LTG Air Distribution

Locally accelerated air flowat the measuring point

Variable Flow Rate Controllers

Benefits

Highest precision of all known measuring systems due to LTG map control

Manages even lowest air speeds due to enhanced differential pressure

One system for round and rectangular ducts, available with dynamic or static measuring principle

Easy integration due to entryflow-insensitivity and very short installation length

Optimised design with particularly airtight closure

Variable Flow Rate Controllers of VRactive series are designed for supply pressure-independent control of constant or variable air flows. For dynamic (VRactive) and static (VRactive-s) measuring.

VRFactive VRDactive

VREactive

VREactive VRFactive VRDactive

Features / Use Highest precision, round

Highest precision, square

2 dampers for supply /return air control in parallel air ducts, round

Measuring principle � dynamic (for non-polluted air) o static (for polluted air)1)

Insulated case o

Silencer o

� Standard o optional

1) VRFactive-s

Product Data

Flow Rate Controllers

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© LTG Aktiengesellschaft© LTG Aktiengesellschaft 3332

Benefits

Optimum use of your plant´s energy-saving potential by reducing required pressures

Reduction of control expenditures

Possible combination of spring return / high-speed drives

Optional: Flow rate measurement in combination with flow rate controller

Pressure controllers DRE and DRF are designed to maintain a required constant pres-sure inside a room or supply air/return air duct. Both are suitable for use with polluted or chemically loaded air.

Measuring principle � dynamic (for non-polluted air) o static (for polluted air)

Silencer o

� Standard o optional

DRE / DRFProduct Data

DRE DRF

Pressure Controllers

Your advantages

� Cost optimized from the very start: Invest-ment costs, energy consumption and operation costs can be reliably optimized

� Implementation risks can be reduced

� Predictable comfort: The greatest possible thermal and olfactory comfort through simu-lation and testing

� Security when renovating comfort air techno-logy systems

� Reduced on site commissioning because pre-sets are made in the factory

� Choice of the best climate system to suit each building type

� Benefit from our modern development centre with various flow laboratories, reverberation chamber, a calorimetric test stand and simulati-on tools for optimizing your project

Our services

� Realistic room flow tests in various scales (model tests or full scale)

� Comfort parameter measurements to DIN EN ISO 7730, and room climate evaluation in the lab and on site

� Evaluation and optimization of existing ventilati-on systems and devices

� Evaluation and visualization of air flows, heat flows, ventilation efficiency and much more, using Computional Fluid Dynamics (CFD) simu-lation

� Acoustic and aerodynamic investigations for as-sessing noise, sound level, low rate and pres-sure loss

� Comparative studies of various room climate systems as to costs of investment, operation and life cycle

LTG Engineering Services –

more security for your investments!

LTG Engineering Services offer reliable and detailed reports with recommendations

regarding function and costs for comfort air technology installations prior to final design.

As early as the design proposal for a new building or a renovation, we determine the

facts and data precisely for you to secure your investment.

LaboratoryEcho chamber

LTG Engineering ServicesLTG Air Distribution

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© LTG Aktiengesellschaft© LTG Aktiengesellschaft 3534

TRADITIonAL oR HIGH-TECH – MAny REFEREnCES SPEAK In oUR FAVoUR

A lot of experience collects across a corporate his-tory of about 90 years. The range of our references is accordingly wide, reaching from renovation of the air conditioning technology of monument-protected old buildings to air conditioning units for pioneering buildings or solutions for highly technological production processes. We ensure good air even in Egyptian pyramids or in space flight.

What many of these projects share is an unusual task that can only be mastered with lots of commit-ment, know-how and creativity. This was the case even in the early days of LTG, when founder Dr. Klein constructed the first air conditioning systems, and this will continue to characterise our company in future. We continue development where classic concepts end.

Challenge us and become our future reference. Our experts in room air and process air technology will gladly develop a concept for you that will not only meet your requirements, but also convince you with energy efficiency and investment safety.

Page 19: LTG Aktiengesellschaft Comfort Air Technology · LTG SystemDesign permits different technical solutions for room air ... Dr. Albert Klein for an induction plant in 1915. Benefits

LTG Aktiengesellschaft

Grenzstr. 7

70435 Stuttgart

Germany

Tel.: +49 (711) 8201-0

Fax: +49 (711) 8201-720

E-Mail: [email protected]

www.LTG.net

[09/17] Subject to technical changes. © LTG Aktiengesellschaft, Stuttgart

LTG Incorporated

105 Corporate Drive, Suite E

Spartanburg, SC 29303

USA

Tel.: +1 (864) 599-6340

Fax: +1 (864) 599-6344

E-Mail: [email protected]

www.LTG-INC.net