A_ATG_PR-2013-0008-GB_DENCO-OfficeCool_BR_K0-11-2013_150dpi-2

engineering for a better world GEA Heat Exchangers

The future of high-performance air conditioning

GEA DENCO®-OfficeCool with HX-Factor

PR-2013-0008-GB · Subject to modification · K0-11/2013

26 °C High level, high temperature return air back to the Zone Unit to complete the cycle

Conditioned air under the floor12 – 16 °C

Energy savings

Quiet operation

Installation can be deferred until final build/let

Quick easy office modifications possible

Easy to design

Construction savings

No requirement for large plant rooms

[ 2 ]

PR-2013-0008-GB · Subject to modification · K0-11/2013

Occupants control their own local environment

depending on their needs

24 °C

Mixed air supply from LECU to room at low velocity

20 °C Quick installation

Individual control of local environment

Office space quickly and easily adapted for new occupants

System redundancy

Reduced “slab to slab” height

[ 3 ]

GEA Chillers

GEA Air Handling Units (AHUs)

BMS or GEA Standalone Control System

Zone UnitThe Zone Unit provides the primary air conditioning to its zone, with each zone

measuring up to 300 m2. Zone Units are drawn through vertical type, either top return

(ZD type) or bottom return (ZU type) supplying conditioned air into a raised floor void.

Zone Units have all necessary components such as filters, cooling coils, control valves,

microprocessor controllers, and inverter driven fan motors to achieve the required

underfloor condition with the maximum efficiencies. Options include heating (electrical,

low-pressure hot water, or direct expansion), and dehumidification and humidification

using water vapour. Zone Unit configuration can be either top return bottom discharge

or bottom return bottom discharge, and are available in three standard sizes (from

10 kW – 30 kW). Other sizes are available on request.

Complete system solutions from GEA

GEA DENCO®-OfficeCool

components and connections

PR-2013-0008-GB · Subject to modification · K0-11/2013[ 4 ]

Zone Unit LECUs

GEA offers complete system solutions

Local Environmental Control Unit (LECU)Each Zone Unit is connected to up to 35 LECUs, which gives the GEA DENCO®-

OfficeCool Air Conditioning System the exceptional ability to cope with changing office

layout requirements. The LECU is an intelligent fan tile, easily positioned anywhere

in the raised floor and provides the user with control over their “micro-climate”. Each

LECU includes a fan, a modulating damper and intelligent controller and will main-

tain the locally desired set temperature by re-circulating a varying mixture of air from

the room and conditioned air from under the raised floor.

Air Handling Unit (AHU)The AHU is sized to meet the fresh air requirements of the offices and delivers the

fresh air to the return air side of the Zone Unit.

ChillerThe Chiller is sized to meet the cooling requirements of the entire building.

PR-2013-0008-GB · Subject to modification · K0-11/2013 [ 5 ]

1

1

1

2

2

2

2

3

44

4

4

4

56

1 Zone Unit

2 LECU

3 Return air grilles

4 Ceiling grille

5 AHU

6 Heat pump

7 Chiller

7


The GEA DENCO®-OfficeCool concept –

designed to users´ specifications

Configurations for every room size, every requirement and condition

External plant spaceThe heat rejection equipment, such as Chillers, Heat Pumps and Air Handling Units

can all be installed externally.

Bottom air supply and return (ZU type Zone Unit and LECU) Where no ceiling is installed or where the integrity of the space above the raised floor

is important, the Zone Unit supplies and returns the air within the access floor space.

This space is simply divided into supply and return air plenums with underfloor

barriers. Cooling and heating can be provided by chilled water and low pressure hot

water or by heat pumps. The space is conditioned by the Zone Unit, and the LECUs

provide the occupants with the ability to control their space.

Bottom air supply and high level return (ZD type Zone Unit and LECU) The Zone Unit supplies conditioned air into the access floor void and hot air is returned

to the Zone Unit at high level. Cooling and heating can be provided by chilled water

and low pressure hot water or by heat pumps. The space is conditioned by the Zone

Unit, and the LECUs provide the occupants with the ability to control their space.

Bottom air supply and ceiling return (ZD type Zone Unit and LECU)The Zone Unit supplies conditioned air into the access floor void and hot air is returned

to the Zone Unit through a suspended ceiling. Cooling and heating can be provided by

chilled water and low pressure hot water or by heat pumps. The space is conditioned

by the Zone Unit, and the LECUs provide the occupants with the ability to control their

space.

Conditioning by external Air Handling Unit (AHU and LECU)The air conditioning of the space can be done by an externally mounted Air Handling

Unit, which supplies conditioned air through ducts into the access floor. The hot air is

returned to the Air Handling Unit through the ceiling and duct system. The LECUs

provide the occupants with the ability to control their space.

Benefits at a glance Almost cost free relocation

capability

Exceptionally quiet operation

Local environment control for

individuals

Control of temperature and

humidity for a healthier

environment

Filtration of both fresh air and

re-circulated air for a healthier

environment

Economical operation

Easy maintenance with all

services at low level in the

raised floor

Elimination of draughts


Components

Zone Unit and LECU

Cooling coils

Heating

Filter

Inverter driven fans

Zone Unit

Q� CW or DX multi-row constructedQ� 3/8" OD copper tubes with mechanically bonded aluminium finsQ� Coils are tested up to 33 bar

Q� High-quality EU4 Z-Line filterQ� F7 filters, EU7 and washable filters are also availableQ� Differential pressure switch in the microprocessor control system indicates necessary filter change

Q� Low pressure hot water, with coils constructed of 3/8” OD copper tube, and mechanically bonded aluminium finsQ� In heat pump installations, reverse cycle heat pump provides heating through the evaporator/condenser coilQ� Electric Heating (optional), with stainless steel fins on heating elements and over temperature thermostatic safety cut out

Q� Quantity (1, 2 or 3) depending on unit sizeQ� Double inlet, double width with forward curved impellerQ� Directly driven by an integral motorQ� Fans will automatically modulateQ� EC Plug Fans are now available on some models


Controls

Q� Several controller options availableQ� Standard controller pC05Q� All units can be fitted, as an option, with a Trend IQ3Xact controlQ� Various interfaces for building management systems, etc.Q� Monitoring display

Sensors

Q� Water sensor (optional)Q� Sensors for measuring air conditions

Steam humidifier (optional)

Q� Proportional control electrode steam humidifierQ� Microprocessor control with alarm and diagnosis unit

Chilled water control valves

Q� Continously modulated 2- or 3-way valvesQ� Provided with vapour sealed insulation

LECU and components

GrillesQ� Rectangular and circular grilles available

Fan sectionQ� Single forward curved crossflow fanQ� Integrated single IP 44 closed type central electric motorQ� EC Centrifugal Fans are available on request

Filter (optional)Q� G2 filter in sheet metal frame

Electric heaterQ� 250 or 500 W electric heater

Control system and accessoriesQ� Handheld IR Remote Controller with IR Receiver PCB or IR Remote Controller Q� LED display with ability to change air-flow or set point

ComponentsQ� PlantWatch Pro touch screen displayQ� PlantVisor for remote system monitoring Trend IQ View 8 with touch screen display

LECU


Technical data

Energy savings, carbon footprint and cost-efficiency

Design advice provided by local GEA DENCO®-OfficeCool specialist office. Specifications and unit schedules provided by local GEA

office for inclusion into design schedules. Life cycle cost analyses (LCCA) can be provided on request. Selection data below, for

standard chilled water units. Full selection carried out by local GEA DENCO®-OfficeCool specialist office. DX, heat pump and AHU

selections provided on request.

Unit size ZD 12 ZD 28 ZD 42 ZU 12 ZU 28 ZU 42

Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap.

Air supply Downflow Upflow

Cooling capacity

Total (1) kW 5.1 11.3 14.2 10.4 22.3 27.8 15.5 32.0 42.0 5.1 11.3 14.2 10.4 22.3 27.8 15.5 32.0 42.0

Sensible (1) kW 3.6 8.6 10.8 7.5 17.3 21.6 11.0 25.5 32.7 3.6 8.6 10.8 7.5 17.3 21.6 11.0 25.5 32.7

Fan

Fan type Inverter controlled forward curved centrifugal fan

Fan no. n. 1 1 1 2 2 2 3 3 3 1 1 1 2 2 2 3 3 3

Air flow (4) m3/h 700 2,200 2,900 1,400 4,400 5,800 2,100 6,600 8,700 700 2,200 2,900 1,400 4,400 5,800 2,100 6,600 8,700

m3/s 0.2 0.6 0.8 0.4 1.2 1.8 0.6 1.8 2.4 0.2 0.6 0.8 0.4 1.2 1.8 0.6 1.8 2.4

Ext. static pressure Pa 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25

Fan Power kW 0.05 0.3 0.6 0.1 0.6 1.2 0.2 0.9 1.8 0.05 0.3 0.6 0.1 0.6 1.2 0.2 0.9 1.8

Specific fan power W/l/s 0.25 0.5 0.75 0.25 0.5 0.75 0.33 0.5 0.75 0.25 0.5 0.75 0.25 0.5 0.75 0.33 0.5 0.75

Cooling coil Copper tube / aluminium fin

Water flow (3) l/s 0.2 0.4 0.5 0.5 0.8 1.0 0.6 1.0 1.4 0.2 0.4 0.5 0.5 0.8 1.0 0.6 1.0 1.4

Water temperature °C (3) kPa 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0

Pressure drop-coil & valve (1)

kPa 8.0 23.0 35.0 10.0 24.0 36.0 8.0 20.0 36.0 8.0 23.0 35.0 10.0 24.0 36.0 8.0 20.0 36.0

Electric heater (optional) Low watt density finned tube

Capacity kW 3.0 3.0 3.0 6.0 6.0 6.0 6.0 6.0 6.0 3.0 3.0 3.0 6.0 6.0 6.0 6.0 6.0 6.0

Current A 4.5 4.5 4.5 9.0 9.0 9.0 9.0 9.0 9.0 4.5 4.5 4.5 9.0 9.0 9.0 9.0 9.0 9.0

Heating steps n. 1.0 1.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0

Humidifier (optional) Fail safe electrode boiler

Capacity kg/h 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3

Power kW 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0

Power supply

Power source 400 V / 3 Ph / 50 or 60 Hz

Cooling only power kW 0.2 0.5 0.8 0.3 0.8 1.4 0.4 1.1 2.0 0.2 0.5 0.8 0.3 0.8 1.4 0.4 1.1 2.0

Max. power kW 5.1 5.3 5.6 8.1 8.6 9.2 8.2 8.9 9.8 5.1 5.3 5.6 8.1 8.6 9.2 8.2 8.9 9.8

Piping connection Copper tube

Condensate drain mm 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0

Humidifier in. mm 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0

Chilled water in & out mm 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0

Dimension

Length mm 647 647 647 1,247 1,247 1,247 1,847 1,847 1,847 647 647 647 1,247 1,247 1,247 1,847 1,847 1,847

Depth mm 654 654 654 654 654 654 654 654 654 850 850 850 800 800 800 800 800 800

Height mm 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940

Weight (2) kg 215 215 215 355 355 355 430 430 430 230 230 230 370 370 370 445 445 445

(1) Rated at return air 26 °C / 50 % and outdoor air temperature 35 °C; (2) For cooling only unit; (3) 7 / 13 °C; (4) Recommended airflows used to maintain office noise level


Unit size ZD 12 ZD 28 ZD 42 ZU 12 ZU 28 ZU 42

Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap. Min. cap. Recommended Max. cap.

Air supply Downflow Upflow

Cooling capacity

Total (1) kW 5.1 11.3 14.2 10.4 22.3 27.8 15.5 32.0 42.0 5.1 11.3 14.2 10.4 22.3 27.8 15.5 32.0 42.0

Sensible (1) kW 3.6 8.6 10.8 7.5 17.3 21.6 11.0 25.5 32.7 3.6 8.6 10.8 7.5 17.3 21.6 11.0 25.5 32.7

Fan

Fan type Inverter controlled forward curved centrifugal fan

Fan no. n. 1 1 1 2 2 2 3 3 3 1 1 1 2 2 2 3 3 3

Air flow (4) m3/h 700 2,200 2,900 1,400 4,400 5,800 2,100 6,600 8,700 700 2,200 2,900 1,400 4,400 5,800 2,100 6,600 8,700

m3/s 0.2 0.6 0.8 0.4 1.2 1.8 0.6 1.8 2.4 0.2 0.6 0.8 0.4 1.2 1.8 0.6 1.8 2.4

Ext. static pressure Pa 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25

Fan Power kW 0.05 0.3 0.6 0.1 0.6 1.2 0.2 0.9 1.8 0.05 0.3 0.6 0.1 0.6 1.2 0.2 0.9 1.8

Specific fan power W/l/s 0.25 0.5 0.75 0.25 0.5 0.75 0.33 0.5 0.75 0.25 0.5 0.75 0.25 0.5 0.75 0.33 0.5 0.75

Cooling coil Copper tube / aluminium fin

Water flow (3) l/s 0.2 0.4 0.5 0.5 0.8 1.0 0.6 1.0 1.4 0.2 0.4 0.5 0.5 0.8 1.0 0.6 1.0 1.4

Water temperature °C (3) kPa 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0

Pressure drop-coil & valve (1)

kPa 8.0 23.0 35.0 10.0 24.0 36.0 8.0 20.0 36.0 8.0 23.0 35.0 10.0 24.0 36.0 8.0 20.0 36.0

Electric heater (optional) Low watt density finned tube

Capacity kW 3.0 3.0 3.0 6.0 6.0 6.0 6.0 6.0 6.0 3.0 3.0 3.0 6.0 6.0 6.0 6.0 6.0 6.0

Current A 4.5 4.5 4.5 9.0 9.0 9.0 9.0 9.0 9.0 4.5 4.5 4.5 9.0 9.0 9.0 9.0 9.0 9.0

Heating steps n. 1.0 1.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0 1.0 1.0 1.0 2.0 2.0 2.0 2.0 2.0 2.0

Humidifier (optional) Fail safe electrode boiler

Capacity kg/h 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3 1.5 – 3

Power kW 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0

Power supply

Power source 400 V / 3 Ph / 50 or 60 Hz

Cooling only power kW 0.2 0.5 0.8 0.3 0.8 1.4 0.4 1.1 2.0 0.2 0.5 0.8 0.3 0.8 1.4 0.4 1.1 2.0

Max. power kW 5.1 5.3 5.6 8.1 8.6 9.2 8.2 8.9 9.8 5.1 5.3 5.6 8.1 8.6 9.2 8.2 8.9 9.8

Piping connection Copper tube

Condensate drain mm 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0

Humidifier in. mm 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0

Chilled water in & out mm 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0

Dimension

Length mm 647 647 647 1,247 1,247 1,247 1,847 1,847 1,847 647 647 647 1,247 1,247 1,247 1,847 1,847 1,847

Depth mm 654 654 654 654 654 654 654 654 654 850 850 850 800 800 800 800 800 800

Height mm 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940 1,940

Weight (2) kg 215 215 215 355 355 355 430 430 430 230 230 230 370 370 370 445 445 445

Energy comparison GEA DENCO®-OfficeCool vs traditional FCU and AHU model

600

400

200

0

Jan Feb

Mar M

ayJu

n Jul

Apr Aug Sep

Oct Nov Dec

GEA DENCO®-OfficeCool

Traditional

A 0-25

26-50

51-75

76-100

101-125

126-150

Over 150

BCDEFG

47 This is how efficientthe building is.

Typical building rating achieved in UK

Co

sts

in €


Gabriel Dincuta

Text

LECU operation and control

For flexible office concepts

Cooling modeIf the room sensor detects that the local tem-

perature is too warm, it interrogates the un-

derfloor sensor. If the underfloor tempera-

ture is below that of the room air, the

damper is modulated open to allow cooling

to the space. The damper is modulated suffi-

ciently to offset the heat gain to the space.

Heating modeIf the room sensor detects that the local tem-

perature is too cold, it interrogates the under-

floor sensor. If the underfloor temperature is

above that of the room air, the damper is

modulated open to allow heating to the space.

The damper is modulated sufficiently to off-

set the heat loss to the space.

Recirculation modeWhen the room sensor detects that the local

temperature matches the set point, the damp-

er will be closed and the unit will be in recir-

culation mode. An adjustable bleed damper

allows sufficient air from the floor void to

provide the fresh air requirements for the

space.

Electric heater mode (optional)Under exceptional circumstances, if the

room sensor detects that the local tempera-

ture is too cold and upon interrogation of the

underfloor sensor it is determined that there

is insufficient heat available, the controller

will modulate the damper fully closed and

initiate the electric heater battery. The heater

will be on until such time that either the un-

der floor temperature increases sufficiently

to meet the heating requirement, or the room

temperature increases to the set point.

Cooling mode

Heating mode

Recirculation mode

Electric heater mode

heater(optional)

heater(optional)

heater(optional)

heater(optional)

fan

fan

fan

fully modulating damper



independent controller




return air sensor

return air sensor

return air sensor

return air sensor

floor voidsensor

floor voidsensor

floor voidsensor

raised modularfloor

raised modularfloor

raised modularfloor

raised modularfloor

chos

en t

emp

chos

en t

emp

chos

en t

emp

chos

en t

emp

fan fully modulating damper

floor voidsensor


Local Environment Control Unit (LECU)The LECU gives the GEA DENCO®-OfficeCool Air Conditioning System an exceptional

ability to cope with the changing work space layout requirements. It is an intelligent

fan tile, easily positioned anywhere in the floor of any work space. The LECU has 3

selectable fan speeds as standard (although 0-10 volt versions are now available on

some models) and an adjustable set-point to meet users requirements. It maintains the

locally desired set temperature by re-circulating a varying mixture of air from the

room and conditioned underfloor air.

The LECU has its own frame and can be used with stringerless raised floors. It exactly

matches a 600 x 600 raised floor panel and only weighs 18 Kg. Relocation of LECUs can

be accomplished in minutes and enables the GEA DENCO®-OfficeCool Air Conditioning

System to adapt to your changing work space layout.

Adjustment of the LECU operation is available in different forms. At its simplest,

adjustment of the set point and fan speed can be done directly via an infra red, hand-

held remote control or the optional display mounted on the LECU.

The Building Management System (BMS) allows monitoring or adjustment of the set

point and fan speed as well as monitoring of the entire system using selectable vari-

ables. When the LECU and the Zone Units are networked, the Zone Unit can be con-

trolled by the average of the readings on the room sensors of the LECUs within any

particular zone.


Control configuration possibilities

Under what conditions which configuration is used?

Zone Unit 1

RS 485Field Card

RS 485Field Card

RS 485Field Card

Serial Card Serial Card Serial Card

Data Cable

Control System / BMS

Remote access or user terminal access

5 m network cable supplied with each LECU

LECU 1 LECU 1 LECU 1



Zone Unit 2 Zone Unit 3

On Floor Touch Screen Group Controller

Building IT infrastructure

Intranet /Internet


On Floor Touch Screen Group Controller

Zone Unit Field Cards

Standard ethernet cable RJ45

Linked Zone Unit Controllers

Building IT backbone switch

A fully linked control system provides communica-

tion between end users and individual LECUs. With

integration possible between the building s own BMS

and/or a purpose built control system just for GEA

DENCO®-OfficeCool.

GEA’s own purpose written software allows for seam-

less communication of all GEA DENCO®-OfficeCool

components, with data logging, alarm warnings as

standard. User input is possible from many locations

for ease of access, quick and easily adjustable temper-

ature settings for maximum flexibility and comfort

for all.

Other options for layout and operationThere are a number of additional features which

allow the users to get the maximum benefit from the

GEA DENCO®-OfficeCool Air Conditioning System.

An on floor touch screen group controller, or IQView 8,

can be installed in the system. These provide a “mini-

headend” capability for smaller installations that

have no BMS, or where a BMS is installed, it provides

tenants, or users, with the control over the equipment

installed at floor plate level.

Standalone Control System


Dimensional drawings and technical data

Zone Unit

ZD version ZU version

Model size ZD 12 ZD 28 ZD 42 ZU 12 ZU 28 ZU 42

Weights and dimensions

Weight kg 215 355 430 230 370 445

Height (H) mm 1,940 1,940 1,940 1,940 1,940 1,940

Width (W) mm 647 1,247 1,847 647 1,247 1,847

Depth (D) mm 654 654 654 850 800 800

ZU 12

647

W D

850

1,9

40

H

ZU 28

1,247

W D

800

1,9

40

H

ZU 42

1,847

W D

800

1,9

40

H

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ZD 12

647

W D

654

1,9

40

H

ZD 28

1,247

W D

654

1,9

40

H

ZD 42

1,847

W D

654

1,9

40

H

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Unit Front

ServiceAccess

60

0 m

in


LECU

LECU

Weights and dimensions

Weight kg 18

Top dimension mm 600 x 600

Height (H) mm 222

Width 1 (W1) mm 494

Width 2 (W2) mm 500

Width 3 (W3) mm 595

Depth 1 (D1) mm 637

Depth 2 (D2) mm 595

W1: 494 W2: 500

H: 2

22

D1: 637D2: 595

W3:

595

Concept Rule of Thumb

Zone UnitApprox. capacity

Area covered

Approx. no. of LECUs required

ZD 42 30 kW 300 m2 15

ZD 28 20 kW 200 m2 10

ZD 12 10 kW 100 m2 5

To calculate approximate number of Zone Units:No. of Zone Units = total load / approx. capacity

To calculate approximate number of LECUs:Number of LECUs = supply airflow / 0.11

To double check the number of LECUs:Number of LECU = floor plate area / 15 m2

* Approximate distance between unit outlet 25 m

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Fan FLA 0.5

W 40

Electric heater FLA 2.2

W 50

Unit without heater fitted FLA 0.5

Unit with heater fitted FLA 2.7

LECU underfloor pressure 0 (Pa)

Fan Speed Airflow Noise Level

m3/s m3/hr NR

1 0.08 288 28

2 0.1 360 33

3 0.12 432 40


Quality

Always focusing on the customer

Quality management with HX-Factor from development to after-salesWe, the GEA experts for climate and environment solutions, are the European market

leaders for the entire spectrum of air treatment. Quality is one of our key success factors.

Looking back on more than 100 years of experience we have continuously improved

and optimized our products and business operations, keeping one central goal in focus:

Exceeding our customers expectations. Our major quality feature is the HX-Factor. It

is our performance commitment and stands for unique expertise in heat exchange (HX

= HEAT EXCHANGE). The HX-Factor is the one special personal strength that every

single employee invests into the production processes. In order to keep our staff as

healthy and motivated as possible, we are committed to comply with applicable regu-

lations and requirements. Regular training ensures that our employees maintain their

skills in accordance with the latest developments. The HX-Factor is also the sum of all

attributes that make our products convincing – in the case of DENCO®-OfficeCool it is

cost and energy efficiency as well as flexibility. Finally, the HX-Factor is what we live

in the heat exchange business to be engineering for a better world. Numerous certifi-

cations prove our competence.

Certificates Quality Assurance –

EN ISO 9001:2008

CE marking for all EU

relevant products

Safety of Machinery:

EN 60204-1:2006+A1:2009


N ISO 12100-1:2003


EN ISO 12100-2:2003

EMC Emissions:

EN 61000-6-3:2007

EMC Immunity:

EN 61000-6-2:2005

Refrigeration Systems:

EN 378-1/2/3/4:2008

ASME 9

Solutions with HX-Factor

The HX-Factor is our promise. It stands for our

unique expertise in heat exchange (HX = HEAT

EXCHANGE) and marks out all our products

and services. GEA DENCO®-OfficeCool is a very

modular solution with systematic sophistication,

which promises the following: made-to-measure

and space-saving climate control with maximum

reliability and energy-efficiency.


Manufacturing Centers

Air treatment competence around the globe

Over the past 100 years the GEA experts for room climate solutions have established

an international network of manufacturing sites. Centers of excellence for air handling

units, close control units, decentral air treatment, and clean rooms are located in several

countries throughout Europe and Asia. All of them deal constantly with the continu-

ous improvement in production processes and optimization according to the latest

international standards. With a clear focus on standardization, all sites can assure a

high level of production flexibility. Furthermore, just in time production with short

delivery times helps fulfil customer requirements. With integrated research and devel-

opment facilities, we are able to handle even the most technically demanding projects.

One of our special skills is advanced knowledge in metal sheet processing. No matter

what our customers ask of us – reliability is the most decisive feature that character-

izes all GEA sites.

Global approach

International quality standards

Constant improvement

Flexible standardization

Just in time production

Customer in focus

Production facility in Pune, India The Turkey location in Istanbul

Production facility in Wuhu, China Factory in Wurzen, Germany

Aerial photograph showing the factory

in Liberec, Czech Republic

Looking inside the GEA site at Hereford, UK


References

Solutions for every climatic demand

MEPC LimitedMEPC manages some of the UK's best known commercial prop-

erty, with seven Business Estates set in prime locations through-

out the UK. Together they provide over 7 million sq ft of high

quality space for more than 1,000 organizations, employing over

20,000 people. MEPC chose the GEA DENCO®-OfficeCool un-

derfloor air conditioning system for over 10,000 sq m office ac-

commodation, across 6 new buildings. In total, GEA installed

70 Zone Units and 850 Local Environmental Control Units

(LECU). MEPC desired the flexibility offered by GEA DENCO®-

OfficeCool system, due to the relatively high fit-out alteration

requirements of their tenants. The system also met MEPC’s cor-

porate sustainability objectives. GEA has worked closely with

MEPC to deliver the energy efficient solution, through chilled

water cooling and DX heat pumps systems, which will achieve

Class B Energy Performance Certification.

Public Authority for Applied Education and Training (PAAET) – AESS Building, KuwaitPAAET selected the GEA DENCO®-OfficeCool underfloor air

conditioning system for its new education campus in the Shu-

waikh district of Kuwait. GEA Middle East FZE supplied 416 x

Zone type Air Handling Units and 5,000 x GEA LECUs for

the central tower and administrative wings of this building.

All of the equipment supplied for this project was manufac-

tured at our GEA Liberec factory in the Czech Republic. This

system is independently controlled via GEA’s own central con-

trol system which is fully integrated into the PAAET building

management system.

[ 20 ]

YONHAP Media Center – KoreaThis national television company has chosen a complete GEA

DENCO®-OfficeCool solution for their air conditioning require-

ments for their new state of the art studios in the centre of

Seoul. The system was supplied by GEA Middle East FZE and

encompasses 24 x GEA Air Handling Units all of which were

manufactured in our GEA Wurzen Plant in Germany, addition-

ally there are 48 x GEA DENCO® Ultra Zone Units and 1,500

GEA LECUs which were manufactured in our Liberec plant in

the Czech Republic.

AgustaWestland HelicoptersWhen AgustaWestland refurbished one of their office blocks

they selected the GEA DENCO®-OfficeCool underfloor air con-

ditioning system. The office was air conditioned by 14 Zone

Units and a number of Local Environmental Control Units

(LECU), which allows employees control over their workspace

temperature. When AgustaWestland install any new air con-

ditioning system, they carefully review the energy efficiency

of the system. The GEA DENCO®-OfficeCool System with each

Zone Unit is connected to a reverse cycle heat pump which pro-

vides a very energy efficient cooling and heating system. The

fresh air for the system is provided by two GEA Air Handling

Units, with heat recovery, which provide additional energy

savings.

[ 21 ]

Your GEA experts for air treatment systems

Sales network

Europe

GEA Klimatechnik GmbH

Gaspoltshofen, Austria

GEA Happel Belgiuim N.V./S.A.

Brussels, Belgium

GEA Klima-rashladna tehnika d.o.o.

Zagreb, Croatia

GEA Heat Exchangers a.s.

Liberec, Czech Republic

GEA Happel S.A.S.

Roncq, France

GEA Delbag S.A.S.

Montry, France

GEA Air Treatment GmbH

Herne, Germany

GEA Air Treatment Production GmbH

Wurzen, Germany

GEA Klimatechnika Kft

Budapest, Hungary

GEA Klimatechnik UAB

Vilnius, Lithuania

GEA Happel Nederland B.V.

Capelle an der Ijssel, Netherlands

GEA Klimatyzacja Sp. z.o.o.

Wroclaw, Poland

SC GEA Klimatechnik s.r.l.

Timisoara, Romania

GEA Klimatechnik GmbH & Co. KG

Moscow, Russia

GEA Klimatechnik GmbH Srbija

Belgrad, Serbia

GEA Klimatizacia s.r.o.

Bratislava, Slovakia

GEA Klimatizacijska tehnika d.o.o.

Ljubljana, Slovenia

GEA Isisan Tesisat Insaat

Taahhüt Ticaret ve Sanayi A.S.

Istanbul, Turkey

TOV GEA-Ukrayina

Kiev, Ukraine

Our competence centers for GEA DENCO®-OfficeCool systems

Middle East

GEA Middle East FZE

P.O. Box 261236, JAFZA Building LOB 17

4th Floor, Suite 412, Jebal Ali Free Zone, Dubai, UAE

Europe

GEA Heat Exchangers Limited

Dolphin House, Moreton Business Park, Moreton-on-Lugg

Hereford HR4 8DS, United Kingdom

China

GEA Industrial Heat Exchangers Systems

R535/538, South Block, Tower C, Raycom Info Tech Park

No. 2 Kexueyuan South Road, Zhong Guanchun

Beijing 100190, China

India

GEA Ecoflex India Pvt Ltd

Air Treatment Business Unit

713, 7th Floor, 98, Hemkunt Tower

Nehru Place, New Delhi – 110019, India

Sales / Distribution

Service

Production / Manufacturing


We live our values.Excellence r Passion r Integrity r Responsibility r GEA-versity

GEA Group is a global engineering company with multi-billion euro sales and operations in more than 50 countries. Founded in 1881, the company is one of the largest providers of innovative equipment and process technology. GEA Group is listed in the STOXX® Europe 600 Index.

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