VRVIIR410

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CA

With its unique technology,

Daikins VRV Air Conditioning Systems

meet virtually every customer s

needs for small to large buildings,whether new or existing.

EPCE03-06B

SYST EMS

The Next Generation of

Air Conditioning Systems

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TT a b l e o f

C O N T E N T S

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INTRODUCTION

Who is Daikin? p 4

The history of VRV systems p 6

WHAT IS ? p 8

THE INTELLIGENT AIR CONDITIONING SYSTEM p 10

PRODUCT EXPLANATION p 12

Possible indoor units using R-410A p 14

Possible outdoor units using R-410A p 15

Main Features p 16

A Creating maximum comfort p 16

B Energy efficient solution p 18

C High reliability p 20

D Eco friendly p 22

E Easy and flexible design p 23

F Simple and rapid installation p 26

PRODUCT FEATURES OUTDOOR UNITS USING R-410A p 30

Survey outdoor units p 31

technology p 32

cooling only p 35

heat pump p 36

heat recovery p 38

Accessories p 40

PR ODUCT F EATURES I NDOO R UNITS US I NG R -410A p 42

Survey indoor units p 43

FXZQ 4-way blow ceiling mounted cassette

(600mm x 600mm) p 44

FXFQ 4-way blow ceiling mounted cassette p 46

FXCQ 2-way blow ceiling mounted cassette p 48

FXKQ ceiling mounted corner cassette p 50

FXDQ concealed ceiling unit (small) p 52

FXDQ-N slim concealed ceiling unit p 54

FXSQ concealed ceiling unit p 56

FXMQ concealed ceiling unit (large) p 58

FXHQ ceiling suspended unit p 60FXAQ wall mounted unit p 62

FXLQ floor standing unit p 64

FXNQ concealed floor standing unit p 64

PRODUCT FEATURES CONTROL SYSTEMS p 66

Survey control systems p 67

Individual control systems p 68

Centralised control systems p 70

Wide variety of control systems p 71

p 72

p 73p 74

p 74

Accessories p 75

page3

New

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page4

Daikin has more than 70 years experience in manufacturingadvanced, high quality equipment air conditioning forresidential, commercial and industrial applications.

The Japanese mother company Daikin Industries Ltd. isactively engaged in research into a wide spectrum of scienceand disciplines, from mechanics and electronics to chemicalsand fluorocarbons.

Since its formation in 1972, Daikin Europe has evolved froma component assembly plant into the most advanced airconditioning manufacturing complex in Europe. All Europeanstandards regarding production, health and safety are metin full.

The environment

Daikins unique position as a manufacturer of both fluorocarbon refrigerants and air conditioning and refrigeration

equipment has not surprisingly led to its close involvementin environmental issues.

Once ozone depletion in the stratosphere becameattributable to chloro fluoro carbon refrigerant chemicals(CFCs), Daikin took the decision to cease both theirproduction and that of the products that use them. At thesame time, Daikin joined leading world manufacturers inthe research into safe and environmentally friendlyalternatives. The Environment Protection Agency of theU.S.A afforded recognition of these efforts in June 2002by presenting Daikin with its prestigious trophy for

the protection of the environment.

Daikin intends to become a leader in the provision ofenvironmentally friendly products. This challenge demandsthe eco-design and development of a comprehensiveproduct range and an energy management system thataddresses energy conservation, reduction in waste and thecontrol of hazardous substances etc.

IIn t roduc t ionWho i s Da ik in ?

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page5

ISO14001

ISO14001 assures an effective environmental managementsystem in order to help protect human health and theenvironment from the potential impact of our activities,products and services and to assist in maintaining andimproving the quality of the environment.The European affiliate companies have plans to achieveISO 14001 by the year 2005, thereby contributing to Daikinstarget of global status as a leading environment consciouscompany. Economic benefits will surely follow the effortsand investments needed to be a sustainable and socially

responsible enterprise.

ISO9001

Daikin Europe N.V. is approved by LRQA for its QualityManagement System in accordance with the ISO9001standard. ISO9001 pertains to quality assurance regardingdesign, development, manufacturing as well as to servicesrelated to the product.

CE

Daikin units comply with the European regulations thatguarantee the safety of the product.

Distribution network

Daikin maintains close contact with its markets through ahighly professional network of local distributors. Perceivedas an extension of the companys quality chain, alldistributors are carefully trained in order to maintain highquality sales, installation and after sales service to theircustomers.

Quality

The application of advanced technologies, combined withcareful selection of bought in components and extensive inhouse testing and field trial procedures ensures unrivalledproduct quality.

Training

The Daikin training centre in Ostend is unique and the mostadvanced of its kind in Europe. Both hands on and theoreticalinstruction are provided into all aspects of the companys airconditioning equipment and systems and specially conceivedcourses are available to suit distributors and their approveddealers from all over Europe.

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page6

1987The original VRV air conditioning system developed byDaikin in 1982 is introduced into Europe in Standard

format. The system is able to supply conditioned air from upto 4 indoor units connected to a single outdoor unit.

1990The end of the year sees the launch of the newInverter system with the facility to operate up to 8 indoorunits from a single outdoor unit. Inverter capacity controlgreatly increases system flexibility and efficiency.

1991A further step forward is taken in 1991 with the intro-duction of the Heat Recovery system, offeringsimultaneous cooling and heating from different indoorunits on the same refrigeration circuit.

1992Continuous improvements to energy efficiency and systemflexibility lead to the development of the advancedin which fresh air supply (HRV) and computerisedmanagement (DACMS) are integrated with the VRV.

1994Consistent high quality and efficiency lead to the wide-spread acceptance of the VRV concept and Daikin becomesthe first Japanese air conditioning manufacturer to beawarded the ISO9001 certification.But the search for improved flexibility and energy efficiencydoes not stop there. Unrivalled field experience and closeregard for market requirements enables Daikin to apply yetanother quantum leap to VRV technology - theInverter-H series, operating up to 16 indoor units from just1 outdoor unit !

1998In anticipation of phase out dates for all CFC basedequipment, Daikin Europe steps up the production of VRVair conditioning units using ozone friendly refrigerant.

Daikin Europe celebrates its 25th anniversary with the awardof an ISO14001 environmental certificate and theintroduction of Inverter K series with R-407C, incooling only or heat pump format. As many as 16 indoorunits can be connected to 1 single outdoor unit.

TThe H i s to ryof Sy s tems

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1999The series using R-22 has been designed aroundleading edge technologies to accommodate high capacityair conditioning networks of up to 30 indoor units from asingle refrigerant circuit.

Another step forward has been taken with the launch of theheat recovery series using R-407C and connecting up

to 16 indoor units to 1 single outdoor unit.

2000Because of the growing needs of large-capacity systems

Daikin Europe introduces the series using ozonefriendly refrigerant, in heat pump format. Up to 32 indoor

units can be connected to a single refrigerant circuit.

2001The latest addition to the VRV Plus series is theheat recovery series using R-407C. Up to 32 indoor units canbe connected to a single refrigerant circuit.

2002Daikin launches the new series an environmentalfriendly, energy saving series with high COP levels and

flexible design characteristics.

2003Daikin Europe has achieved a quantum leap forward incommercial air conditioning technology by the introductionof its ,the worlds first R-410A operated variablerefrigerant flow system. Available in cooling only, heatpump and heat recovery versions, the new system, whichrepresents a considerable advance over earlier VRV systems,demonstrates Daikins innovative application of newtechnology and the latest HFC refrigerants to its VRVproduct programmes.

Many new features and installation benefits areincorporated in . Its operating range for example 5hp, then 8hp to 48hp in 2hp increment steps (22 systemcombinations), is wider than any of its contemporaries.Furthermore, its ability to run no less than 40 indoor units inheat recovery as well as heat pump format cannot atpresent be matched by other comparable systems.

page7

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WW h a t i s

?

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page9

In recent years, design styles for intelligent buildings such as

hotels, banks and offices etc. have increasingly featured largeareas of glazing with attendant high solar heat gains that canonly be dissipated by means of air conditioning. Notsurprisingly therefore, air conditioning has grown inimportance and is now widely accepted as an integralcomponent of most modern architectural concepts.

The increasing use of electronic office equipment raisesthermal loadings still further to a point whereby, even inwinter, internal temperatures can reach uncomfortable levels.The demand for cooling or heating can also vary considerablythrough-out the day depending on the number and

occupation of personnel on the premises. But end users havecome to expect far more than just cooling and heating fromtheir air conditioning.

The ideal modern system mustbe energy efficient, easy toinstall, flexible, reliable anduser friendly. Fresh air must besupplied without increasing

energy consumption and therole of central managementfacilities should also beconsidered in this respect formedium to large sizedbuildings. The Daikin Hi-VRVsystem meets all thesedemands.

The innovative Hi-VRV selection programme, Daikins flag

ship software package, enables you to exploit the systemspossibilities to the max and guarantees the end user a perfectservice.From now on you can fully plan your Daikin air-conditioningproject on a step-by-step basis without difficulty.

AIR CONDITIONING

VENTILATION CONTROL ANDMANAGEMENT

DAIKINNETWORKSOLUTION

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page1 0

HeatRecoveryVentilation

heat and humidity areexchanged between supplyand exhaust air, which brings outdoor air close to

indoor air conditions recovers energy loss realises considerable

reduction of air conditioningcapacity

TThe In te l l igentA i r Cond i t ion ing Sy s tem

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page1 1

Variable Refrigerant Volume

available in cooling only, heat pump and heat recoveryformats.

a rapid response system in which up to 40 indoor units canoperate on the same refrigerant circuit.

an inverter driven compressor enables the output ofthe outdoor unit to be modulated in accordance withthe cooling/heating demand of the zone which it controls.

DAIKINNETWORKSOLUTION

The ideal solution for control and management ofmaximum 1,024 VRV indoor units.

Allows detailed and easy monitoring and operation ofVRV systems (maximum 64 control groups).

Integrated control system connecting VRV system withBMS system.

LONWORKS networks compatible gateway.

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PE X P L A N A T I O N

P r o d u c t

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page1 3

DAIKIN CARES FOR THE ENVIRONMENT

Consideration for the evironment in which we live and work, isafforded very high priority by Daikin. The companys unique position asthe worlds only manufacturer of both air conditioning equipment andrefrigerant chemicals enables it to offer the perfect symbiosis of hightechnology and environmental protection.Daikin has actively engaged in intensive research into ozone friendlyrefrigerants, resulting in the development of innovative techniques forenergy efficient systems that reduce CO2 emissions and limit

global warming.

INVERTER COOLING ONLY

For cooling operation from one system Up to 16 indoor units can be operated from a single outdoor unit

without the need for an additional adapter PCB. The line-up of 5, 8, 10hp models is ideally suited to applications in

smaller facilities and minor expansions and upgrades.

INVERTER HEAT PUMP

For either cooling or heating operation from one system Up to 40 indoor units can be operated from a single outdoor unit

without the need for an additional adapter PCB. An extensive capacity range starting at 5hp, then from 8hp to 48hp

in 2hp increments, meets all customer requirements concerning smallto large buildings, whether new or existing

HEAT RECOVERY

For simultaneous cooling and heating operation from one system Up to 40 indoor units can be operated from a single outdoor unit in

heat recovery format. Extensive capacity range from 8hp to 48hp in 2hp increments, meets

all customer requirements concerning small to large buildings,whether new or existing.

Heat recovery is achieved by diverting exhaust heat from indoor unitsin cooling mode to areas requiring heating.

The BS unit switches the system between cooling and heating modes.

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page1 4

FXNQ

FXLQ

FXAQ

FXHQ

FXMQ

FXSQ

FXDQ

FXKQ

FXCQ

FXFQ

FXZQ

PP os s i b l e I nd oo r U ni tsUs ing R- 410A20 25 32 40 50 63 80 100 125 200 250

4-way blow ceilingmounted cassette

2-way blow ceilingmounted cassette

4-way blow ceiling mountedcassette (600mm x 600mm)

Ceiling mountedcorner cassette

Concealed ceiling unit (small)

Concealed ceiling unit

FXDQ-N

Slim concealed ceiling unit

Concealed ceiling unit (large)

Ceiling suspended unit

Wall mounted unit

Floor standing unit

Concealed floor standing unit

Type

$ $ $ $ $

$ $ $ $ $ $ $ $ $

$ $ $ $ $ $$ $

$ $ $ $

$ $

$ $ $ $ $ $

$ $ $ $ $ $ $ $ $

$ $ $ $ $ $ $ $

$ $ $

$ $ $ $ $ $

$ $ $ $ $ $

$ $ $ $ $ $

New

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page1 5

PP os s i b l e O ut do or U ni tsUs ing R- 410Acooling only

eg. Selected indoor units: FXCQ25 + FXFQ100 + FXMQ200 + FXSQ40

Connection ratio: 25 + 100 + 200 + 40= 365

possible outdoor unit RXYQ12M

INDOOR UNIT CAPACITY INDEX

Model 20 25 32 40 50 63 80 100 125 200 250

Capacity index 20 25 31.5 40 50 62.5 80 100 125 200 250

Capacity

steps

RXQ5M RXYQ5M - 1 1 8 63 163 20

RXQ8M RXYQ8M REYQ8M 1 2 13 100 260 29

RXQ10M RXYQ10M REYQ10M 1 2 16 125 325 29

- RXYQ12M REYQ12M 1 2 19 150 390 29

- RXYQ14M REYQ14M 1 3 20 175 455 35

- RXYQ16M REYQ16M 1 3 20 200 520 35

- RXYQ18M REYQ18M 2 4 20 225 585 41

- RXYQ20M REYQ20M 2 4 20 250 650 41

- RXYQ22M REYQ22M 2 4 22 275 715 41

- RXYQ24M REYQ24M 2 5 32 300 780 46

- RXYQ26M REYQ26M 2 5 32 325 845 46

- RXYQ28M REYQ28M 2 5 32 350 910 46

- RXYQ30M REYQ30M 2 6 32 375 975 51

- RXYQ32M REYQ32M 2 6 32 400 1,040 51

- RXYQ34M REYQ34M 3 7 34 425 1,105 56

- RXYQ36M REYQ36M 3 7 36 450 1,170 56

- RXYQ38M REYQ38M 3 7 38 475 1,235 56

- RXYQ40M REYQ40M 3 8 40 500 1,300 61

- RXYQ42M REYQ42M 3 8 40 525 1,365 61

- RXYQ44M REYQ44M 3 8 40 550 1,430 61

- RXYQ46M REYQ46M 3 9 40 575 1,495 68

- RXYQ48M REYQ48M 3 9 40 600 1,560 68

heat pump heat recovery

N of

outdoors

N of

compressors

N of

connectable

indoors

Minimum capacity

index*

Maximum

capacity index*

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1 6

100%

10%

100%

24%

AA . C re at i ngMax imum Comfor tMF E A T U R E SM a i n

Inverter technology

The linear VRV system makes use of a variable Proportional Integral(PI) control system which uses refrigerant pressure sensors to giveadded control over inverter and ON/OFF control compressors inorder to abbreviate control steps into smaller units to provideprecise control in both small and larger areas.This in turn enables individual control of up to 40 indoor units ofdifferent capacity and type at a ratio of 50~130 % in comparisonwith outdoor units capacity. 5 HP outdoor units use inverter controlcompressors only.

1

14%

100%

CompressorCapacityControl

210Hz-52Hz20 Steps

InverterControl

Large SmallLoad

5HP outdoor unit

CompressorCapacityControl

210Hz-52Hz+ No.2 Compressor29 Steps

N2 Compressor100% Operation

N1CompressorInverter Control

Large SmallLoad

N1

CompressorInverter Control

8,10,12HP outdoor unit 14,16HP outdoor unit

210Hz-52Hz+ No.2 + No.3Compressor35 Steps

Inverter Control210-52Hz - 20 steps

Large SmallLoad

N1Compr.Inv. Control

N2Compressor

100%Operation

CompressorCapacityControl

N2Compressor

100%Operation

N3Compressor100%Operation

N1Compr.Inv. Control

N1

Compr.Inv. Control

page

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page1 7

VRV SERIES (DAIKIN PID Controls)

ON/OFF controlled air conditioner (2.5HP)

Time

Cooling

Suctionairtemp.

Note: the graph shows the data, measured

in a test room assuming actual heating load.

Smart control brings comfort

An electronic expansion valve, using PID control, continuously

adjusts the refrigerant volume in respond to load variations of theindoor units. The VRV system thus maintains comfortable roomtemperatures at a virtually constant level, without thetemperature variations typical of conventional ON/OFF controlsystems.

2

The thermostat can controlstable room temperature at

0.5C from set point.

Inverter AC

Non inverter AC

Set point

Smaller

temperature

difference

Large temperature

difference

Repeatsh

otandc

oldcycle

s

Keeps temperature stable

Startup time reduced

by about 1/3

Slow start-up

Less frequent start/stop cycle

the technique adopted by Daikin, of regulating the capacity usingmultiple compressors clearly results in minimum switching lossesand power surges because of the overlap in capacity and frequency

since Daikin utilises small 5HP inverter compressors, the influenceof harmonics is less than that generated by a single largecompressor

the use of multiple compressors by Daikin also ensures a 50 %

standby facility smaller compressors are cheaper and faster to replace

3

Frequency

30 116 30+on 116+on

Capac

ity

50%

60%

55%

65%

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page1 8

BB . EnergyEff ic ie nt S ol ut io nLow running costs

VRV systems have low running costs because it permits each zoneto be controlled individually. That is, only those rooms thatrequire air conditioning will be heated or cooled, while thesystem can be shut down completely in rooms where no airconditioning is required.

VRV units have the highest COP/EER in the market in the mostcommon operating area

1

Most advanced reluctance brushless

DC compressor technology

The scroll compressor is driven by the newly developed motor,enabling better performance, higher enery efficiency resulting inhigher energy cost savings.

2

HRV - Heat Recovery Ventilation System

Heat and humidity are exchanged between supply and exhaust air,

which- brings outdoor air close to indoor air conditions- recovers energy loss- realises considerable reduction of air conditioning capacity

The VAM heat exchanger modulates the humidity andtemperature of incoming fresh air to match indoor conditions.

The balance achieved between indoor and outdoor ambients,enables the cooling/heating load placed on the air conditioningsystem to be reduced. (heat and humidity are exchanged)

Most energy saving solution as smaller indoor units can be selected :- size down of indoor units down to 40 %- payback total VAM system : 2.5 years*

*conditions : outside cooling conditions : 30C / outside heating conditions : - 8C

inside cooling conditions : 24C / inside heating conditions : 22C

ventilation per room : 150m3/h

Ideal modular concept to cope with the fresh air requirements

3

Auto restart capability

Even after exceptionally long power failures, the built-in auto restart

capability ensures automatic system start up. Since the preset memoryis not erased by interruptions in power supply, no programmeresetting is necessary.

4

First in theindustry

First in theindustry

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page1 9

Low operation sound level

Continuous research by Daikin into reducing operation soundlevels has resulted in the development of a purpose designedinverter scroll compressor and fan.

The new grille and fan offer low noise, high volume airflow andare housed in a compact casing together with the associatedcompressor components. The use of this new technology assemblyenables a 16hp unit to be housed in a single casing.

Aero spiral fan:Bending the fan blade edge reduces turbulence, resulting in lesspressure loss

Aero fitting grille:New shape promotes spiral discharge airflow, resulting in reducedpressure loss

Night quiet function (max. -8dBA)During night time, sound level of the outdoor unit can be reducedfor a certain period : starting time and ending time can be input

Daikin indoor units have very low sound operation levels,down to 25 dBA.

5

dB(A) Perceived loudness Sound

0 Treshold of hearing -

20 Extremely soft Rustling leaves

40 Very soft Quiet room

60 Moderately loud Normal conversation

80 Very loud City traffic noise

100 Extremely loud Symphonic orchestra

120 Threshold of feeling Jet taking off

Daikin indoor units

Operation rangeof outdoor

temperature

Standard operation downto -20C outdoor ambienttemperatureAdvanced PI control of theoutdoor unit enables VRV IIheat recovery and Invertercooling only/heat pump seriesto operate at outdoor ambientsdown to -5C in cooling modeand down to -20C in heating

mode.

6

50

40

30

20

10

-5

-10

-15

-20

Cooling43CDB

Cooling43CDB

Heating15.5CWB

Heating

15.5CWB

Cooling & Heating

15.5CWB

-5CDB

-20CWB

-5CDB -5CWB

Inverter cooling only/heat pump

Heat recovery

First in theindustry

50

40

30

20

10

-5

-10

-15

-20 -20CWB

New

New

50

8:00 12:00 16:00 20:00 0:00 4:00 8:00

50

100

58

0

Operationsound dBA

Night mode starts

Load %

Capability %

Nightmodeends

external signal inputto outdoor PCB

Night mode

Max. - 8dBA(10HP)

Notes : This function is available in setting at site. The relationship of outdoor temperature (load)

and time shown in the graph is just an example.

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page2 0

CC . H ighRe l iab i l i t y

Heat exchanger

Improvement in corrosion resistance

Corrosion resistance rating

Non-treated Anti-corrosion treated

Salt corrosion 1 5 to 6

Acid rain 1 5 to 6

An anti-corrosion heat exchangercutaway view

Aluminium

Hydrophilic film

Corrosion-resistantAcrylic resin

N1 anti-corrosion treatment

Special anti corrosion treatment of the heat exchanger provides5 to 6 times greater resistance against acid rain and salt corrosion.The provision of rust proof steel sheet on the underside ofthe unit gives additional protection.

1

contents of 1 cycle (48 hours)according to DIN50018 (0.21)testing period : 40 cycles

Performed tests :

8

6

4

2

0

1 2 3 4 5

Cycle

Corrosionresistance

1 2 3 4 5 6 10 20 30 40Cycle

Corrosionresistance

10

9

8

7

6

5

4

3

2

1

0

DAIKIN P.E.

Bare aluminium

DAIKIN P.E.

contents of 1 cycle (7 days): 24 hours salt spray test

SS DIN 50021 96 hours humidity cycle test

KFW DIN 50017 48 hours room temperature

& room humiditytesting period : 5 cycles

Barealuminium

2 Kesternich test (SO2)

1 VDA Wechseltest

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page2 1

Duty cycling

The cyclical start-up sequence of multiple outdoor unit systemsequalises compressor duty and extends operating life.

Special oil equalising technology

The incorporation of this technology ensures that the optimumquantity of oil is contained in each outdoor unit module in orderto maintain compressor reliability. Automatic checks are carriedout every 6 minutes on the number of compressors in operationand also to ascertain that there is enough oil to keep them running.In the event of a shortage being indicated, oil can be piped fromother outdoor units in the system via the oil balancing pipe linkingmultiple systems.

Each compressor in a VRV II outdoor unit is equipped with aninternal oil equalising circuit, comprising an oil separator and oilreturn circuit. This ensures that the maximum quantity of oil isreturned to the compressor case before entering the REFNET pipingnetwork. The oil equalising circuit of each outdoor unit is linkedto those of the other outdoor units, allowing additional reliabilityand oil circulation during partial load operations.

No standby equipment required

Conventional VAV (Variable Air Volume) systems and chiller/fan coilsystems require expensive and bulky standby units in case ofbreakdown. Since most outdoor units of the VRV system comprisea number of independent compressors, the system as a whole willcontinue to function in the event of a unit breakdown.

3

4

5

Double back-up functionIn the event of a compressor malfunction, the remotely controlledor field set back-up function in the outdoor unit in question(and also between different outdoor units) will allow emergencyoperation of another compressor in order to maintain 8 hourmaximum interim capacity

2

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page2 2

Lowest refrigerant amount inthe total system

18 HP Comparable VRF system

Total refrigerant amount 100% 160 %in the system*

* based on average installation

Dramatic reduction in initial

refrigerant charge :

16 HP R-22 R-407C R-410AVRV-K series VRV-K series series

Refrigerant charge 100 % 85.6 % 79.5 %

Optimised R-410A design

Daikin Europe has achieved a quantum leap forward in commercialair conditioning technology by the introduction of its VRV II, theworlds first R-410A operated variable refrigerant flow system.

Available in cooling only, heat pump and heat recovery versions, thenew system, which represents a considerable advance over earlierVRV systems, demonstrates Daikins innovative application of newtechnology and the latest HFC refrigerants to its VRV productprogrammes.

Less waste and improved re-cycling

The lead free, soldered PCB obviates environmental contamination,whilst the re-cyclable galbarium steel bottom plate is designed tolast around 6 times longer than the traditional galvanised base.

Refrigerant recovery function

The refrigerant recovery function enables all expansion valves tobe opened. In this way the refrigerant can be drained fromthe piping system and stored in the receiver and the condenser.

2

1

3

4

5

DD . E c oFr iend ly

Reductio

n

of20.5%

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page2 3

EE . Eas y andF lex ib le Des ignTotal room layoutflexibility

VRV II systems are easilyadaptable to changes inroom layout : extra indoorunits can be added to aVRV outdoor unit up to acapacity level of 130%.

Also, since VRV II heatrecovery systems offersimultaneous cooling and

heating, existing indoor andoutdoor units can continue toprovide year round airconditioning from theirexisting locations, even ifoffice layouts are altered orextended.

1Meeting room

ROOM LAYOUT CHANGE

INDOOR UNITADDITION

Meeting room

Office

Reception room

Stock room

Office

Meeting room

Meeting room

Complete flexibility

The VRV II system enables different floors or even rooms to berented to different customers, because each room has independentcontrol of its air conditioning.

Thanks to inverter technology, as many as 40 indoor units withdifferent types and capacities can be installed in one system. Thissystem automatically and effectively controls each unit to provideindividual rooms of different sizes with a comfortable working or

living environment.

Year round cooling and/or heating

Designed to provide simultaneous year round cooling and/orheating, VRV II heat recovery systems are modular in conceptand are therefore, ideal for use in rooms or zones that generatevarying thermal loads according to building orientation or localhot or cold spots.

It is possible for the same meeting room to give rise to differing

thermal loads depending on the time of day, number of occupantspresent, location and usage pattern of lighting and electronicoffice equipment.

Until the advent of the VRV, a complex 4-pipe fan coil was neededto meet this requirement. The VRV however, is easier to designand install and in its heat recovery format, can conserve energy intwo or more rooms at the same time.

Efficient use of space

The VRV II system allows you to use the available space moreefficiently. Instead of having to incorporate a machine room in toyour building plans, you can use this space for other purposes,such as a garage.

2

3

4

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Actual piping

length

Level difference betweenindoor and outdoor units

*1

*1 in this case the outdoor unit is located abovethe indoor unit. If the outdoor unit is locatedunderneath the indoor unit the level differenceis a maximum of 40m.

Longest refrigerant piping run

The ability to sustain refrigerant piping in lengths up to 150m(175m equivalent), allows systems to be designed with leveldifferences of 50m between indoor and outdoor units and 15mbetween individual indoor units. Thus, even with installations in15 storey buildings, all outdoor units can be located at rooftoplevel.

Level differencebetween indoorunits

5

Short planning and design time

In conventional water systems, the size of the pipes and all auxiliaryequipment must be calculated in accordance with the water flow rate.However, using a Daikin VRV system, with innovative compressortechnology, time-consuming calculations are not necessary, offeringconsiderable reductions in design time.

6

piping length betweenfirst branch and furthestindoor units

Actualpi

ping

length1

50m

Equivalentpipin

g

length1

75m

EE . Eas y andF lex ib le Des ign

Firstint

he

industry