topvent_4209245_en_2012-01

TopVent

Recirculation Units and Supply Air Units for Heating and Cooling High Spaces.

ASafety

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TopVent DHVRecirculation unit for heating high spaces

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TopVent DKVRecirculation unit for heating and cooling high spaces

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TopVent NHVRecirculation unit for heating high spaces with lower comfort requirement (e.g. high-bay warehouses)

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TopVent commercial CAURoof unit for ventilating, heating and cooling supermarkets

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TopVent commercial CUMRoof unit for heating and cooling supermarkets

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TopVent MHSupply air unit for ventilating and heating high spaces

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TopVent MKSupply air unit for ventilating, heating and cooling high spaces

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TopVent HVRecirculation unit heater for rooms with up to 6 m height

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TopVent curtainAir curtain

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Options

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Control systems

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Operation

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ASafety

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Symbols ______________________________ 5

Operational safety ______________________ 5

Safety during maintenance _______________ 5

Information for an operating instruction session ______________________________ 5

5Safety

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Symbols1

Caution You will find this symbol next to all safety notices that warn you of the danger to the life and limb of per-sonnel. Take heed of these notices and behave with caution! At the same time the valid laws and generally valid safety and accident-prevention regulations must be heeded.

Attention This symbol appears next to notices and regulations that have to be heeded to avoid damage to property.

Notice This symbol designates information about economic use of the units or special tips.

Operational safety2

TopVent units are state-of-the-art and are safe to operate. Nevertheless, hazards may emanate from these units, if they are used incorrectly or not used as intended. Therefore:

Please read and take heed exactly of the operating instructions for the units and safety instructions before unpacking, installing and commissioning them and prior to any maintenance!Store the operating instructions so that they are easily accessible.The units may only be installed, operated and maintained by authorized, trained and instructed skilled personnel.Observe any attached information and warning signs.

For installation and operation of the units the local safety and accident prevention regulations are valid in all cases; these have to be heeded and complied with!

Safety during maintenance3

Have any maintenance and repair work performed only by authorized skilled personnel or by our customer service department. Special regulations have to be heeded, e.g. when working on the electrical systems.Before commencing any maintenance work or trouble- shooting work switch off the unit via the main switch and secure it with a padlock against being switched back on.Before performing any maintenance work switch the isolation switch (optional) to the 'Off' position.

Only the fan is switched off by the isolation switch. Optional items may continue to carry a live voltage!

When working in the TopVent unit, be careful of any unprotected sharp metal edges.Renew immediately any damaged or removed instruction signs, warning signs and safety inscriptions.Do not obscure informational and warning signs by past- ing or painting over them.Following maintenance work, professionally reassemble all dismantled protective devices.Unauthorized conversions or modifications to the unit can impair the safety of personnel and the operability of the unit and are therefore not allowed.Spare parts must comply with the technical requirements. Recommendation: use only genuine Hoval spare parts.

Information for an 4 operating instruction session

According to the accident prevention regulations of some countries, the operator of equipment must, for the purpose of preventing industrial accidents, make arrangements to in-struct the operating personnel about dangers that may occur and measures for their avoidance. This can be done with the help of operating instruction sessions. In addition to national regulations for accident prevention and environmental pro-tection, an operating instruction session should include the most important points set out in these operating instructions.

ATopVent DHVRecirculation unit for heating high spaces

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1 Use _______________________________ 8

2 Construction and operation _____________ 9

3 Technical data ______________________ 10

4 Design example _____________________ 16

5 Options ___________________________ 18

6 Control systems _____________________ 19

7 Transport and installation ______________ 20

8 Specificationtexts ___________________ 22

8TopVent DHVUse

1 Use

1.1 Intended useThe TopVent DHV unit is used to heat high spaces in recir-culation mode.Proper use also includes observance of the installation, commissioning, operating, and maintenance conditions (operatinginstructions)specifiedbythemanufactureraswellas the consideration of foreseeable abnormal behaviour and residual dangers.

1.2 User groupTopVent DHV units may only be installed, operated and maintained by authorized and trained skilled personnel. The operating instructions are for English-speaking operating engineersandtechniciansaswellasspecialistsinbuilding,heating and air technology.

1.3 Operating ModesTopVentDHVunitshavethefollowingoperatingmodes:

Recirculationmodeatlowfanspeed Recirculation mode at high fan speed Standby Off

TheapplicationlimitsspecifiedintheSection'TechnicalData'mustbecompliedwith.Any other use or any additional use counts as being im-proper. The manufacturer shall not be responsible for any damages that may result thereby.

The standard version of the units is not suitable for operationinexplosion-proneareas,inwetroomsorinroomswithahighdustincidence.

1.4 Residual dangersDespite all of the precautionary measures taken, there are residual dangers; these are potential, non-apparent dangers, suchas:

Dangerwhenworkingontheelectricalsystem. WhenworkingontheTopVent unit, parts (e.g. tools) can

be dropped. Malfunctions due to defective parts Dangerfromhotwaterwhenworkingonthehotwater

supply.

9TopVent DHVConstruction and operation

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Heating section

Air-InjectorFig.B1:ComponentsoftheTopVent DHV

2 Construction and operation

The TopVent DHV unit is used to heat in recirculation mode; itwasdevelopedspeciallyforuseinhighhalls.Theunitisinstalled under the ceiling. It takes in room air, heats it in theheatingcoilandblowsitbackintotheroomthroughtheAir-Injector.Thankstoitshighperformanceandefficientairdistributionthe TopVent DHV covers a large area. Therefore, compared toothersystems,fewerunitsareneededtoachievetherequired conditions.3 unit sizes, 2-speed fans, various coil types and a series of accessories make it possible to provide a customized solutionforanyhall.Specialcoils(hotwater,steam,electricheating coils) are also available.

2.1 Unit constructionThe TopVentDHVconsistsoftheheatingsection(withfanand heating coil) and the automatically adjustable vortex air distributor. Both components are bolted together, but can be dismantled separately again.

Fig.B2:ConstructionoftheTopVent DHV

2.2 Air distribution with the Air-InjectorThe patented air distributor called the Air-Injector is the core element. The discharge angle of the air is set using theadjustablevanes.Itdependsontheairflowrate( fan speed), the mounting height and the temperature difference betweenthesupplyairandroomair.Theairisthereforeblownverticallydownwards,conicallyorhorizontallyintotheroom. This ensures that

witheachTopVent DHV unit a large area of the hall can be heated,

the occupied area is draught-free, thetemperaturestratificationintheroomisreduced,thus

saving energy.

Soundattenuationcowl

Housing:made of corrosion-resistant Aluzinc sheet metalTerminal boxFanmaintenance-free,low-noisesicklefanwithalowenergyconsumptionHeatexchanger:LPHW heating coil consisting of copper tubeswithaluminiumfinsAir-Injector:patented, automatically adjustable vortex air distributor for draught-free air distribu-tion over a large area

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TopVent DHVTechnical data

3 Technical data

Unit type DHV-6/A DHV-6/B DHV-6/CFan speed 1 2 1 2 1 2

Rotational speed (nominal) min-1 690 900 690 900 690 900Nominalairflowrate m/h 4500 6100 4300 5900 3800 5300Max.floorareareached1) m 376 549 356 525 310 458Powerconsumption(at400V/50Hz) kW 0.48 0.69 0.48 0.69 0.48 0.69Current consumption (at 400 V / 50 Hz) A 0.78 1.25 0.78 1.25 0.78 1.25Unit type DHV-9/A DHV-9/B DHV-9/CFan speed 1 2 1 2 1 2Rotational speed (nominal) min-1 680 900 680 900 680 900Nominalairflowrate m/h 6600 8700 6600 8700 6000 7900Max.floorareareached1) m 610 900 610 900 537 783Powerconsumption(at400V/50Hz) kW 0.70 0.98 0.70 0.98 0.70 0.98Current consumption (at 400 V / 50 Hz) A 1.15 1.75 1.15 1.75 1.15 1.75Unit type DHV-10/A DHV-10/B DHV-10/CFan speed 1 2 1 2 1 2Rotational speed (nominal) min-1 660 860 660 860 660 860Nominalairflowrate m/h 7500 9700 7500 9700 6900 8900Max.floorareareached1) m 727 1058 727 1058 648 931Powerconsumption(at400V/50Hz) kW 0.99 1.53 0.99 1.53 0.99 1.53Current consumption (at 400 V / 50 Hz) A 1.77 3.35 1.77 3.35 1.77 3.351) Mounting height Hmax=11mwithatemperaturedifferencebetweensupplyairandroomairofupto30K

TableB1:TechnicaldataoftheTopVent DHV

TableB2:Typedesignationcode

Type designation code

DHV 6 / A

Unit typeTopVent DHV

Unit size6, 9 or 10

Heat exchangerCoil type A, B or C

Unit type DHV-6 DHV-9 DHV-10Fan speed 1 2 1 2 1 2Sound pressure level (at a distance of 5 m) 1) dB(A) 47 53 52 58 61 68Totalsoundpowerlevel dB(A) 69 75 74 80 83 90Octavesoundpowerlevel 63 Hz dB 75 79 79 83 94 99

125 Hz dB 73 79 74 83 87 94250 Hz dB 68 76 74 79 87 94500 Hz dB 64 70 68 74 80 87

1000 Hz dB 64 71 70 75 77 842000 Hz dB 61 68 68 75 71 784000 Hz dB 54 62 62 68 64 728000 Hz dB 47 55 55 62 55 63

1)withahemisphericalradiationpatterninalow-reflectionroom

TableB3:SoundpowerlevelsoftheTopVent DHV

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Air inlet temperature 15 C 20 CSize LPHW Type St. Q Hmax pW tS mW Q Hmax pW tS mW

C kW m kPa C l/h kW m kPa C l/h

DH

V-6

80/60

A1 29 10.2 5 34 1261 27 10.7 4 37 11392 35 14.3 7 31 1495 32 15.1 6 35 1351

B1 40 8.3 9 42 1721 36 8.8 8 44 15542 49 11.7 13 39 2090 44 12.3 11 42 1886

C1 55 6.2 7 56 2351 50 6.5 6 57 21242 70 8.6 10 53 3018 64 9.0 9 54 2726

60/40

A1 17 13.0 2 26 737 14 14.3 1 29 6132 20 18.4 3 25 873 17 20.2 2 28 725

B1 23 10.6 4 31 1003 19 11.6 3 33 8312 28 15.0 5 29 1213 23 16.6 4 31 1005

C1 33 7.8 3 40 1399 27 8.5 2 41 11692 42 10.8 4 38 1787 35 11.9 3 39 1487

DH

V-9

80/60

A1 49 10.0 5 36 2089 44 10.6 4 39 18872 57 13.6 6 34 2452 52 14.4 5 37 2213

B1 61 9.0 7 42 2636 55 9.5 6 44 23792 73 12.1 10 39 3125 66 12.8 8 42 2819

C1 86 6.9 6 56 3689 78 7.2 5 57 33322 106 9.0 9 53 4535 96 9.5 7 55 4096

60/40

A1 28 12.8 2 27 1217 24 14.1 1 30 10092 33 17.5 2 26 1424 28 19.3 2 29 1181

B1 36 11.5 3 31 1532 30 12.7 2 33 12682 42 15.7 4 29 1810 35 17.3 3 31 1497

C1 51 8.6 2 39 2193 43 9.4 2 40 18312 63 11.4 4 38 2684 52 12.5 3 39 2234

DH

V-10

80/60

A1 53 11.5 5 35 2252 47 12.2 4 38 20332 61 15.4 7 33 2605 55 16.3 6 36 2352

B1 67 10.3 8 40 2855 60 10.9 7 43 25762 78 13.7 11 38 3333 70 14.5 9 41 3007

C1 96 7.9 7 55 4102 86 8.3 6 56 37052 115 10.2 10 52 4944 104 10.7 8 54 4465

60/40

A1 31 14.8 2 27 1310 25 16.3 2 30 10862 35 19.9 3 25 1513 29 21.9 2 29 1254

B1 39 13.3 3 30 1656 32 14.6 2 32 13702 45 17.7 4 28 1928 37 19.5 3 31 1594

C1 57 9.9 3 39 2433 47 10.9 2 40 20292 68 12.9 4 37 2921 57 14.2 3 38 2428

Legend: Type = Type of heating coil

St. = Fan speed

Q = Heating output

Hmax = Max. mounting height

pW = Water pressure drop

tS = Supply air temperature

mW = Waterflowrate

TableB4:HeatingoutputsoftheTopVent DHV

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HGB

28 E T

4 x M10

NC

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F

R

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Unit type DHV-6 DHV-9 DHV-10 Return

FlowA mm 900 1100 1100B mm 905 1050 1170C mm 415 480 601 D mm 500 630 630E mm 594 846 846F mm 758 882 882G mm 322 367 488H mm 244 289 410J " 1 (BSP female) 1 (BSP female) 1 (BSP female)N mm 30 30 27R mm 977 1120 1252T mm 40 40 40Weight kg 97 148 182Water content of the coil

Type A B C A B C A B Cl 3.1 3.1 6.2 4.7 4.7 9.4 4.7 4.7 9.4

TableB5:DimensionsandweightsoftheTopVent DHV

Max. operating pressure 800 kPaMaximum heating medium temperature 120 CMaximum supply air temperature 60 CMaximum ambient temperature 40 C

TableB6:ApplicationlimitsoftheTopVent DHV

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X/2 X

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Unit type DHV-6/A DHV-6/B DHV-6/CFan speed 1 2 1 2 1 2Unit height R m 0.977 0.977 0.977 0.977 0.977 0.977Unit clearance X min. m 10 12 10 11 10 11

max. m 19 23 19 23 18 21Mounting height Y 1) min. m 4 4 4 4 4 4Distance from ceiling Z min. m 0.3 0.3 0.3 0.3 0.3 0.3Unit type DHV-9/A DHV-9/B DHV-9/CFan speed 1 2 1 2 1 2Unit height R m 1.12 1.12 1.12 1.12 1.12 1.12Unit clearance X min. m 12 14 12 14 12 13

max. m 25 30 25 30 23 28Mounting height Y 1) min. m 5 5 5 5 5 5Distance from ceiling Z min. m 0.4 0.4 0.4 0.4 0.4 0.4Unit type DHV-10/A DHV-10/B DHV-10/CFan speed 1 2 1 2 1 2Unit height R m 1.252 1.252 1.252 1.252 1.252 1.252Unit clearance X min. m 13 15 13 15 12 14

max. m 27 33 27 33 25 31Mounting height Y 1) min. m 5 5 5 5 5 5Distance from ceiling Z min. m 0.4 0.4 0.4 0.4 0.4 0.41)Theminimumheightcanbereducedby1mineachcaseusingthe'Airoutletbox'option(seeSectionK'Options').

TableB7:Minimumandmaximumdistances

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3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 80005300

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4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000

DiagramB1:AirflowrateforTopVentDHV-6withadditionalpressuredrop

Pres

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ease

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Air flow rate in m / h


DHV-6 / A Speed 2DHV-6 / B Speed 2DHV-6 / C Speed 2DHV-6 / A Speed 1DHV-6 / B Speed 1DHV-6 / C Speed 1


Example:An additional drop in pres-sure of 46 Pa at 6100 m / h resultsinanewairflowrateof5300 m/h.

Pres

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TopVent DHVDesign example

4 Design example

The performance data for the most frequent design conditions are specifiedinSection3'TechnicalData'.Usetheselectionprogram'HK-Select'tocalculatetheperformancedataforotherdesigndata (room temperature, heating medium temperature). You can download'HK-Select'freeofchargeontheInternet.

Input data Geometry of the room (plan) Mountingheight(=distancebetweenthefloorandloweredgeof

the TopVent unit) Heat load Desired room temperature Heatingmediumtemperature(flow/return) Comfort requirements (acoustic)

ExampleGeometry ...................................50 x 70 mMounting height .........................12 mHeating load ..............................350 kWRoom temperature.....................20 CHeating medium temperature ....80/60 CComfort requirements ................Standard

Comfort requirementsDefinethefanspeedinaccordancewiththeacousticrequirements:Lownoiselevel fanspeed1Normalnoiselevel fanspeed2

Standardfanspeed2

Mounting height Withtheminimummountingheight(TableB7)checkwhichunits

can be used. Withthemaximummountingheight(TableB4)checkwhichunits

can be used. Strikeunitswhicharenotadequate.

DHV-6/ADHV-6/BDHV-6/C



Minimum numbera) Minimum number based on the area

IntableB1itisspecifiedwhatmaximumfloorareacanbecoveredby the TopVentDHV.Foraknownfloorareaitisthenpossibleto calculate for each unit size the minimum number of units required.

b)Minimumnumberbasedonlengthxwidth Depending on the geometry of the hall and in relation to its length andwidthacertainnumberofunitsisrequired.Thiscanbecal-culatedfromthefiguresformaximumdistancesbetweentheunitsandbetweenthemandthewall(seeTableB7).

c) Minimum number based on the heating load Depending on the total heat output required, a minimum number of units can be calculated for each unit size (see Table B4).

The highest number from results a), b) and c) is the actual minimum number required.

Calculate the minimum number of units ac-cording to a), b) and c) and enter it in a table for each type of unit. Take the highest value as the minimum quantity.

Type a) b) c)DHV-6/A 7 9 11 11DHV-6/B 7 6 8 8DHV-6/C None DHV-9/A 4 6 7 7DHV-9/B 4 6 6 6DHV-9/C None DHV-10/A 4 6 7 7DHV-10/B 4 6 5 6DHV-10/C None

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TopVent DHVDesign example

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Definitive number of unitsChoosethefinalsolutionfromtheremainingpossibilities,dependingon the geometry of the hall and the costs.

6 units of DHV-9/B

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TopVent DHVOptions

5 Options

TopVent DHV units can be adapted to the requirements of a particular project by means of a se-riesofoptions.YouwillfindadetaileddescriptionofalloptionalcomponentsinSectionK'Options'of this handbook.

Paint finish at no extra cost in the standard Hoval colours red/orange or for an additional charge in any colour required

Suspension set for mounting the unit on ceiling

Isolation switch on/offswitchthatcanbeoperatedfromtheoutside

Actuator for Air-Injector for adjustment of the Air-Injector

Filter box tofilterrecirculationair

Acoustic cowl to reduce the noise level in the room (reduced noise emis-sion from the Air-Injector)

Recirculation silencer toreducenoiselevelsintheroom(reducednoisereflectionfrom the ceiling)

Air outlet box for use of the TopVentunitinlow-ceilinghalls

Explosion-proof design for use of the TopVent unit in explosion-prone areas (zone 1 and zone 2), for DHV-6 and DHV-9 only

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TopVent DHVControl systems

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6 Control systems

For the TopVent DHV there are components for control of the room temperature and of the air distribution that have been specially developed by Hoval and optimally matched to the devices. YouwillfindadetaileddescriptionofthesecomponentsinSectionL'ControlSystems'ofthishandbook.

6.1 Room temperature control

TempTronic RC This is a programmable, electronic temperature controller forfullyautomaticoperation.Itscontrolalgorithmwithfuzzylogic ensures extremely small control deviations and mini-mizes energy consumption.

EasyTronic Thisisasimpletemperaturecontrollerwithoutatimeswitch.The rooms setpoint temperature is adjusted manually and thedesiredfanspeedisselectedbymeansofaswitch.

6.2 Control of the air distribution

Automatic control by the TempTronic RC

The TempTronic RC also controls the air distribution in accordancewiththechangingoperatingconditions(i.e.de-pending on the fan speed and on the temperature difference betweenthesupplyairandroomair).

Manual control by means of a potentiometer

Inapplicationsinwhichtheoperatingconditionsonlyseldomchangeorwhennotsuchhighcomfortrequirementsaremade, the air distribution can be manually controlled by a potentiometer.

Fixed setting Incaseswheretheairdistributionalwaystakesplaceunderthe same conditions (constant supply air temperature, con-stantairflowrate),itcanhaveafixedsetting.

InindoorclimatesystemsinwhichTopVentDHVunitsareusedtogetherwithRoofVent fresh air handling units, the Hoval DigiNet system assumes all the control and regulation functions.

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TopVent DHVTransport and installation

7 Transport and installation

Transportandassemblyworktobecarriedoutonlyby trained specialists!

A hoist is required for transport and installation of the components!Donottilttheunitorlayitflat!

7.1 InstallationFor ceiling installation the units are equipped as standard with4M10rivetnutswithhexagonheadboltsandwashers.With these bolts and the height-adjustable suspension set (optional) the unit can be easily fastened to the ceiling.

Therivetnutsareonlydimensionedfortheunitsownweight.Donotfastenanyadditionalloads!

The rivet nuts cannot take a bending moment; no eyebolts may be used!

Otherfasteningswithflatbars,perforatedbarsandanglesection,butwithsteelcablesaswell,arealsopossible,how-ever,thefollowinginstructionshavetobeheededwithoutfail:

Lateral,inclinedsuspensionsareallowedupto a maximum angle of 45. Theunitmustbeinstalledhorizontally!

Fig.B3:SuspensionoftheTopVent DHV

7.2 Hydraulic Installation

Have the hydraulic installation performed by skilled personnel only!

Combine units that run under the same operating condi-tions (room temperature, heat gain, operating time etc.) to form a control group.

Warmorhotwateruptoamaximumof120Ccanbeused as the heating medium. For energy saving purposes apre-regulationofthedistributorispossible;however,ithas to be ensured that the heat requirement of the indi-vidual heating coils can be met in any case.

ConnecttheheatingcoilsinaccordancewithFig.B4.Depending on local circumstances it has to be checked whethercompensatorsforthefeedandreturnlinesforcompensation of the linear expansion and/or articulated connections are required for the units.

The coil cannot bear any loads, e.g. by means of thefloworreturnlines!

Hydraulicallybalancetheindividualunitswithoneanotherso that uniform pressure admission is ensured.

Fig.B4:Connectionoftheheating coil

max. 45

max. 45

Ventwithshut-offdeviceFlowcontrolvalveDrain cocksShut-off valvesFlow

ReturnControl valve

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TopVent DHVTransport and installation

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BFig.B5:TerminaldiagramforTopVent DHV

7.3 Electrical installation

The electrical connection must be performed up to the unitbyacertifiedskilledelectrician.Theapplicableregulations have to be observed (e.g. EN 60204-1).

The unit is supplied ready to operate. Checkwhetherthelocaloperatingvoltage,frequencyandfuseprotectioncoincidewiththedataonthetypeplate. If there are any discrepancies, the unit must not be connected!

For long leads the cable cross-sections must be selected according to the technical regulations, e. g. VDE 0100.

Performtheelectricalinstallationworkinaccordancewiththewiringdiagramofthecontrolsystem.

Connect the TopVentDHVunitsinaccordancewiththeterminal diagram.

Connect the thermal contacts that are built into the motor. Only then is the motor protected against overheating.

Donotforgetthemainswitchforthecompletesystem(control system and units).

Several TopVent units can be connected in by means of a parallel circuit.

Wirethethermalcontactsandisolationswitchindicator in series!

Lowspeed(Ycircuit)

High speed ( circuit)

(wiringonsite)

(wiringonsite)

Isolationswitch(optional)

Filter monitoring (optional)

Fan

Thermal contact

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TopVent DHVSpecificationtexts

8 Specificationtexts

8.1 TopVent DHV Recirculation unit for heating high spaces

Housing made of non-corrosive Aluzinc sheet metal, stand-ardequipmentwith4rivetingnutssizeM10withhexagonboltsandwashersforceilinginstallation.Heatexchangermadeofcoppertubesandaluminiumfins,manifolds and distributor made of steel.Fan unit consisting of a 2-speed, 3-phase external rotor mo-torwithpressure-resistantaluminiumsickle-shapedblades,maintenance-freeandquiet,withahighdegreeofefficiency.Motor protection through built-in thermal contacts. Protection class IP54.Terminal box integrated on the side inside of the housing to connect supply voltage and accessories.Vortexairdistributorwithaconcentricoutletnozzle,12ad-justableguidevanes,soundattenuationcowlandsupplyairtemperature sensor.

Technical dataFan speed 1 2Nominalairflowrate ______ ______ m/hFloor area reached ______ ______ mMounting height ______ ______ mNominal heating output ______ ______ kW

withLPHW ______ ______ Cand air inlet temperature ______ ______ C

Powerconsumption ______ ______ kWCurrent consumption ______ ______ AVoltage 400 V / 50 Hz

DHV-6 / A DHV-6 / B DHV-6 / CDHV-9 / A DHV-9 / B DHV-9 / CDHV-10 / A DHV-10 / B DHV-10 / C

8.2 Options

StandardpaintfinishSLin the Hoval colours red (RAL 3000) and orange (RAL 2008)

Paintfinishasdesiredin RAL colour No. ______

Suspension set AHSfor ceiling installation of the unit consisting of 4 pairs U-profilesmadeofAluzincsheetsteel,height-adjustableto1300 mm. Paint according to unit.

IsolationswitchRSin the terminal box of the TopVent unit

Actuator for Air-Injector VT-ASwithcableandplugforadjustmentoftheAir-Injector

FilterboxFKwith2classG4bagfilters(accordingtoDINEN779),withadifferentialpressurecontroldeviceformonitoringthefilter.

FlatfilterboxFFKwith4pleatedcellfilters(accordingtoDINEN779),withapressuredifferencecontroldeviceforfiltermonitoring

AcousticcowlAHDconsistingofasoundattenuationcowloflargevolumeandascreenwithaliningofsoundattenuationmaterial,insertionattenuation 4 dB(A)

Recirculation silencer USDas an attachment to the unit, made of Aluzinc sheet metal, linedwithsoundinsulationmatting,insertionattenuation3 dB(A)

AiroutletboxAKmadeofAluzincsheetmetal,with4adjustableoutletgrilles(replaces the Air-Injector)

8.3 Control systems

Room temperature control and automatic control of the air distribution by the TempTronic RC

Programmableregulationsystemwithmenu-guidedoperatorcontrol for fully-automatic operation of the TopVentunits:

TempTronicRC,operatorcontrolterminalasawallunitinaplastichousingwithanintegratedroomtemperaturesensor

RCstationRCSforthepowersupplyandcontrolofsev-eral TopVent units in parallel operation

RCsinglestationRCEforthepowersupplyandcontrolofa single TopVent unit

ActuatorVT-ASforautomaticadjustmentoftheairblow-out direction from vertical to horizontal

Optional module OM for the control of additional functions, asawallunitinaplastichousing

Room temperature sensor RF for the connection in place of the room temperature sensor that is integrated into the TempTronicRC,inaplastichousingforwall-mountedinstallation

Room temperature mean value MRT4, 4 room tempera-ture sensors for installation in the occupied area

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TopVent DHVSpecificationtexts

B

B

B

B

B

B

B

B

B

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B

B

B

Room temperature control by means of EasyTronicSingleswitchingdevicewith2-pointregulationandmanualchangeoverbetweenfanspeedlevels1and2

EasyTronicET,switchingdeviceforheatingmode,asawallunitinaplastichousing,includingroomthermostat

Manual control of the air distribution by means of the potentiometer

Manual control by means of potentiometer and actuator foradjustmentoftheairblow-outdirectionfromverticaltohorizontal:

PotentiometerwallunitPMS-W Potentiometer for installation into a control panel PMS-S Actuator VT-AS Transformer TA for a maximum of 7 actuators

AB

TopVentDKVRecirculation unit for heating and cooling high spaces

C

D

E

F

G

H

I

J

K

L

M

1 Use ______________________________ 26

2 Construction and operation ____________ 27

3 Technical data ______________________ 28

4 Design example _____________________ 34

5 Options ___________________________ 36

6 Control systems _____________________ 37



26

TopVentDKVUse

1 Use

1.1 Intended useThe TopVentDKVunitisusedtoheatandcoolhighspacesin recirculation mode.Proper use also includes observance of the installation, commissioning, operating, and maintenance conditions (operatinginstructions)specifiedbythemanufactureraswellas the consideration of foreseeable abnormal behaviour and residual dangers.

1.2 User groupTopVentDKVunitsmayonlybeinstalled,operatedandmaintained by authorized and trained skilled personnel. The operating instructions are for English-speaking operating engineersandtechniciansaswellasspecialistsinbuilding,heating and air technology.

1.3 Operating ModesTopVentDKVunitshavethefollowingoperatingmodes:


TheapplicationlimitsspecifiedintheSection'TechnicalData'mustbecompliedwith.Any other or any additional use counts as being improper. The manufacturer shall not be responsible for any damages that may result thereby.

The units are not suitable for operation in explosion-proneareas,inwetroomsorinroomswithahighdust incidence.




supply.

27

TopVentDKVConstruction and operation

C

C

C

C

C

C

C

C

C

C

C

C

C

Heating/cool-ing section

Air-Injector

Fig.C1:ComponentsoftheTopVentDKVunit


The TopVentDKVunitisusedtoheatandcoolinrecircula-tionmode;itwasdevelopedspeciallyforuseinhighhalls.The unit is installed under the ceiling. It takes in room air, heatsorcoolsitandblowsitbackintotheroomthroughtheAir-Injector.Thankstoitshighperformanceandefficientairdistributionthe TopVentDKVcoversalargearea.Therefore,comparedtoothersystems,fewerunitsareneededtoachievetherequired conditions.2 unit sizes, 2-speed fans, various coil types and a series of accessories make it possible to provide a customized solu-tion for any hall.

2.1 Unit constructionThe TopVentDKVconsistsoftheheating/coolingsection(withfan,heatexchangerandintegratedcondensatesepara-tor for the condensate incurred) and the automatically adjust-able vortex air distributor - the Air-Injector. The heating /cool-ing section is insulated to avoid condensation on the external surfaces. Both components are bolted together, but can be dismantled separately again.

Fig.C2:ConstructionoftheTopVentDKV

2.2 Air distribution with the Air-InjectorThe patented air distributor called the Air-Injector is the core element. The air discharge angle is set by means of theadjustableguidevanes.Itdependsontheairflowrate(

fan speed), the mounting height and the temperature dif-ferencebetweenthesupplyairandroomair.Theairisthere-foreblownverticallydownwards,conicallyorhorizontallyintothe room. This ensures that

witheachTopVentDKVunitalargeareaofthehallisheated or cooled,

no draughts occur in the occupied area, thetemperaturestratificationintheroomisreduced,thus

saving energy.

Soundattenuationcowl

Housing:made of corrosion-resistant Aluzinc sheet metal; the heating/cooling section is insulatedTerminal boxFanmaintenance-free,low-noisesicklefanwithalowenergyconsumptionHeatexchanger:LPHW/LPCW coil consisting of copper tubeswithaluminiumfinsCondensateseparator: withcondensateconnectionAir-Injector: patented, automatically adjustable vortex air distributor for draught-free air distribu-tion over a large area

28

TopVentDKVTechnical data

3 Technical data

Unit type DKV-6/C DKV-9/C DKV-9/DFan speed 1 2 1 2 1 2

Rotational speed (nominal) min-1 680 900 660 860 660 860Nominalairflowrate m/h 3900 4900 6600 8700 6200 8100Max.floorareareached1) m 319 416 610 900 561 811Powerconsumption(at400V/50Hz) kW 0.70 0.98 1.00 1.65 1.00 1.65Current consumption (at 400 V / 50 Hz) A 1.15 1.75 1.80 3.50 1.80 3.501) Mounting height Hmax=11mwithatemperaturedifferencebetweensupplyairandroomairofupto30K

TableC1:TechnicaldataoftheTopVentDKV

TableC2:Typedesignationcode

Unit type reference

DKV 6 / C

Unit typeTopVentDKV

Unit size6 or 9

Heat exchangerCoil type C or D

Unit type DKV-6 DKV-9Fan speed 1 2 1 2Sound pressure level (at a distance of 5 m) 1) dB(A) 51 57 60 67Totalsoundpowerlevel dB(A) 73 79 82 89Octavesoundpowerlevel 63 Hz dB 78 82 93 98

125 Hz dB 73 82 86 93250 Hz dB 73 78 86 93500 Hz dB 67 73 79 86

1000 Hz dB 69 74 76 832000 Hz dB 67 74 70 774000 Hz dB 61 67 63 718000 Hz dB 54 61 54 62


TableC3:SoundpowervaluesoftheTopVentDKV

29


C

C

C

C

C

C

C

C

C

C

C

C

C



DK

V-6 80/60 C 1 56 6.4 7 56 2399 51 6.7 6 57 2167

2 66 7.9 9 54 2850 60 8.4 8 55 2574

60/40 C1 33 8.0 3 39 1427 28 8.7 2 40 11922 39 10.0 4 38 1689 33 10.9 3 39 1407

DK

V-9 80/60

C1 93 7.5 7 55 3967 84 7.9 6 56 35832 113 9.9 10 52 4864 102 10.5 8 54 4392

D1 1) 2

60/40C

1 55 9.5 3 39 2355 46 10.4 2 40 19652 67 12.6 4 37 2875 56 13.9 3 38 2390

D1 63 8.2 3 44 2693 53 9.0 2 44 22592 78 10.7 4 43 3358 66 11.7 3 43 2813

1) These operating conditions are not permissible, because the maximum supply air temperature of 60 C is exceeded.

Legend: Type = Type of heating/cooling coil

St. = Fan speed

Q = Heating output




mW = Waterflowrate

TableC4:HeatingoutputsoftheTopVentDKV

30


Cooling medium temp. 6/12 C 8/14 CType tAI rh St. Qsen Qtot pW tS mW mC Qsen Qtot pW tS mW mC

C % kW kW kPa C l/h kg/h kW kW kPa C l/h kg/h

DK

V-6/

C 2450

1 14 16 8 14 2256 3 12 12 5 15 1722 02 17 18 10 14 2608 2 14 14 6 16 2033 0

701 14 26 18 14 3655 17 12 20 12 15 2918 132 16 30 24 15 4244 20 14 24 16 16 3376 14

2850

1 18 26 19 15 3785 12 16 21 13 16 3045 72 22 31 25 15 4395 13 19 25 17 17 3526 8

701 18 39 39 15 5559 30 16 34 30 17 4805 262 20 45 51 16 6462 35 19 39 39 17 5574 29

DK

V-9/

C 2450

1 23 26 7 14 3679 4 20 20 5 15 2836 02 29 30 10 15 4361 3 24 24 7 16 3454 0

701 22 42 18 14 5978 28 19 33 12 16 4763 202 27 50 24 15 7122 32 23 39 16 16 5646 23

2850

1 30 43 19 15 6192 19 27 35 13 16 4973 112 37 52 26 16 7378 21 33 41 17 17 5901 12

701 29 64 38 16 9105 49 26 55 29 17 7861 422 35 76 52 17 10858 58 31 65 39 18 9350 49

DK

V-9/

D 2450

1 27 32 9 12 4613 8 23 23 5 13 3282 02 33 39 12 12 5640 9 28 28 7 14 4079 0

701 27 51 20 12 7295 35 22 41 13 14 5905 272 33 63 28 12 8963 43 28 50 19 14 7224 32

2850

1 35 53 21 12 7540 26 31 43 14 14 6150 182 43 65 30 13 9268 31 38 53 21 14 7528 20

701 34 77 41 12 10952 60 30 67 31 14 9554 522 42 94 59 13 13500 74 37 82 46 15 11739 63

Legend: Type = Unit type

tAI = Air inlet temperature

rh = Air inlet humidity

St. = Fan speed

Qsen = Sensitive cooling capacity

Qtot = Total cooling capacity



mW = Waterflowrate

mC = Amount of condensate

TableC5:CoolingcapacitiesoftheTopVentDKV

Max. operating pressure 800 kPaMaximum heating medium temperature 120 CMaximum supply air temperature 60 CMaximum ambient temperature 40 CMaximumamountofcondensateDKV-6 60 kg/hMaximumamountofcondensateDKV-9 150 kg/hMinimumairflowrateDKV-6 3100 m/hMinimumairflowrateDKV-9 5000 m/h

TableC6:ApplicationlimitsoftheTopVentDKV

31


C

C

C

C

C

C

C

C

C

C

C

C

C

HGB

C KN

J

LM

R

A

D

E F

T

4x M1027

Unit type DKV-6/C DKV-9/C DKV-9/D Access panels

Return

Flow

Condensate drain connection

A mm 900 1100 1100B mm 1380 1500 1500C mm 890 930 930 D mm 500 630 630E mm 594 846 846F mm 758 882 882G mm 470 490 499H mm 392 412 404J " 1 (BSP female) 1 (BSP female) 1 (BSP female)K mm 836 877 877L mm 80 80 80M " 1 (BSP male) 1 (BSP male) 1 (BSP male)N mm 27 27 27R mm 1456 1584 1584T mm 40 40 40Weight kg 170 220 240Water content of the coil

l 6.2 9.4 14.2

TableC7:DimensionsandweightsoftheTopVentDKV

32


X/2 X

ZR

Y

Unit type DKV-6/C DKV-9/C DKV-9/DFan speed 1 2 1 2 1 2Unit height R m 1.456 1.456 1.584 1.584 1.584 1.584Unit clearance X min. m 10 11 12 14 12 13

max. m 18 20 25 30 24 28Mounting height Y 1) min. m 4 4 5 5 5 5Distance from ceiling Z min. m 0.3 0.3 0.4 0.4 0.4 0.41)Theminimumheightcanbereducedby1mineachcaseusingthe'airoutletbox'option(seeSectionK'Options').

For service and maintenance provide a clear space of about 1.5 m on the side opposite the coil connections.

TableC8:Minimumandmaximumdistances

33


C

C

C

C

C

C

C

C

C

C

C

C

C

DiagramC1:AirflowrateforTopVentDKV-6withadditionalpressuredrop

DiagramC2:AirflowrateforTopVentDKV-9withadditionalpressuredrop

0

10

20

30

40

50

60

70

80

90

100

110

120

3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 80004300

0

10

20

30

40

50

60

70

80

90

100

110

120

4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000

Pres

sure

incr

ease

in P

a


DKV-6/C Speed2DKV-6/C Speed1

DKV-9/C Speed2DKV-9/D Speed2DKV-9/C Speed1DKV-9/D Speed1


Pres

sure

incr

ease

in P

a


34

TopVentDKVDesign example

4 Design example

The performance data for the most frequent design conditions are specifiedinSection3'TechnicalData'.Usetheselectionprogram'HK-Select'tocalculatetheperformancedataforotherdesigndata (room temperature, cooling medium temperature). You can download'HK-Select'freeofchargeontheInternet.

Thefollowingdesignratingexamplerelatestocoolingmode.Thedesign rating for heating mode can be performed analogously to thedesignratingexampleinSectionB'TopVentDHV'.

Input data Geometry of the room (plan) Mountingheight(=distancebetweenthefloorandloweredgeofthe

TopVent unit) Cooling load Desired room conditions Coolingmediumtemperature(flow/return) Comfort requirements (acoustic)

ExampleGeometry ...................................55 x 86 mMounting height .........................8 mCooling load...............................190 kWRoom conditions ........................24 C / 50 %Cooling medium temperature ....8/14 CComfort requirements ................Standard

Comfort requirementsDefinethefanspeedinaccordancewithacousticrequirements:Lownoiselevel fanspeed1Normalnoiselevel fanspeed2

Standardfanspeed2

Mounting height Withtheminimummountingheight(TableC8)checkwhichunitscan

be used. Strikeunitswhicharenotadequate.

DKV-6/CDKV-9/CDKV-9/D


IntableC1itisspecifiedwhatmaximumfloorareacanbecoveredby the TopVentDKV.Foraknownfloorareaitisthenpossibleto calculate for each unit size the minimum number of units required.

b)Minimumnumberbasedonlengthxwidth Depending on the geometry of the hall and in relation to its length and widthacertainnumberofunitsisrequired.Thiscanbecalculatedfromthemaximumdistancesbetweentheunitsandbetweenthemandthewall(seeTableC8).

c) Minimum number based on the cooling load Depending on the total cooling capacity required, a minimum number of units can be calculated for each unit size (see Table C5).



Type a) b) c)DKV-6/C 12 15 14 15DKV-9/C 6 6 8 8DKV-9/D 6 6 7 7

35

TopVentDKVDesign example

C

C

C

C

C

C

C

C

C

C

C

C

C

Definitive number of unitsChoosethefinalsolutionfromtheremainingpossibilities,dependingonthe geometry of the hall and the costs.

7unitsofDKV-9/D

36

TopVentDKVOptions

5 Options

TopVentDKVunitscanbeadaptedtotherequirementsofaparticularprojectbymeansofase-riesofoptions.YouwillfindadetaileddescriptionofalloptionalcomponentsinSectionK'Options'of this handbook.




Actuator for Air-Injector for adjustment of the Air-Injector


Acoustic cowl to reduce the noise level in the room (reduced noise emis-sion from the Air-Injector)


Air outlet box for use of the TopVentunitinlow-ceilinghalls

Insulation to avoid condensation on the external surfaces of the Air-Injector

Condensate pump forcondensatedrainagethroughwastewaterpipesdirectlybelowtheceilingorontotheroof

37

TopVentDKVControl systems

C

C

C

C

C

C

C

C

C

C

C

C

C

6 Control systems

For the TopVentDKVtherearecomponentsforcontroloftheroomtemperatureandoftheairdistribution that have been specially developed by Hoval and optimally matched to the devices. YouwillfindadetaileddescriptionofthesecomponentsinSectionL'ControlSystems'ofthishandbook.

6.1 Room temperature control


6.2 Control of the air distribution

Automatic control by the TempTronic RC

The TempTronic RC also controls the air distribution in accordancewiththechangingoperatingconditions(i.e.depending on the speed level and on the temperature differ-encebetweenthesupplyairandroomair).

Manual control by means of a potentiometer

Inapplicationsinwhichtheoperatingconditionsonlyseldomchangeorwhennotsuchhighcomfortrequirementsaremade, the air distribution can be manually controlled by a potentiometer.

Fixed setting Incaseswheretheairdistributionalwaystakesplaceunderthe same conditions (constant supply air temperature, con-stantairflowrate),itcanhaveafixedsetting.

InindoorclimatesystemsinwhichTopVentDKVunitsareusedtogetherwithRoofVent fresh air handling units, Hoval DigiNet assumes all the control and regulation functions.

38

TopVentDKVTransport and installation









TableC3:SuspensionoftheTopVentDKV

7.2 Hydraulic installation


Combine units that run under the same operating condi-tions (room temperature, heat gains, operating time etc.) to form a control group.


ConnecttheheatingcoilsinaccordancewithFig.C4.Dependingonlocalconditions,checkwhethercompen-satorsforlinearexpansionarerequiredfortheflowandreturn lines and/or articulated connections are required for the units.


Dimension the slopes and cross-section of the conden-satedrainagelinesothatnocondensatebackflowtakesplace.


Fig.C4:Connectionoftheheating/cooling coil

max. 45

max. 45


ReturnCondensate drain(withodourtrap)Control valve

39

TopVentDKVTransport and installation

C

C

C

C

C

C

C

C

C

C

C

C

CFig.C5:TerminaldiagramforTopVentDKV



The unit is supplied ready to operate. Checkwhetherthelocaloperatingvoltage,frequencyand

fuse protection match the data on the type plate. If there are any discrepancies, the unit must not be connected!


Performtheelectricalinstallationworkinaccordancewiththewiringdiagramofthecontrolsystem.

Connect the TopVentDKVunitsinaccordancewiththeterminal diagram.



Several TopVent units can be connected by means of a parallel circuit.


Thecondensateseparatoronlyfunctionswhilethefanisrunning.Soswitchoffthecoolantpumptogetherwiththefans.

Lowspeed(Ycircuit)


(wiringonsite)

(wiringonsite)


Filter monitoring (optional)

Fan

Thermal contact

40

TopVentDKVSpecificationtexts


8.1 TopVent DKV Recirculation unit for heating and cooling high spaces

Housing made of non-corrosive Aluzinc sheet metal, heating/cooling section insulated on the inside, equipped as stand-ardwith4rivetnutssizeM10withhexagonheadboltsandwashersforceilinginstallation.Heatexchangermadeofcoppertubesandaluminiumfins,manifolds and distributor made of steel, integrated conden-sateseparatorwithcondensateconnection.Fan unit consisting of a 2-speed, 3-phase external rotor mo-torwithpressure-resistantaluminiumsickle-shapedblades,maintenance-freeandquiet,withahighdegreeofefficiency.Motor protection through built-in thermal contacts. Protection class IP54.Terminal box integrated into the side of the housing to con-nect supply voltage and accessories.Vortexairdistributorwithaconcentricoutletnozzle,12ad-justableguidevanes,soundattenuationcowlandsupplyairtemperature sensor.


withLPHW ______ ______ C and air inlet temperature ______ ______ C

Nominal cooling capacity ______ ______ kW withLPCW ______ ______ C air inlet temperature ______ ______ C and air inlet humidity ______ ______ %


DKV-6/CDKV-9/CDKV-9/D

8.2 Options



Suspension set AHSfor ceiling installation of the unit consisting of 4 pairs U-profilesmadeofAluzincsheetsteel,height-adjustableto1300 mm. Paint according to unit.


Actuator for Air-Injector VT-ASwithcableandplugforadjustmentoftheAir-Injector

FilterboxFKwith2classG4bagfilters(accordingtoDINEN779),withadifferentialpressurecontroldeviceformonitoringthefilter.


AcousticcowlAHDconsistingofasoundattenuationcowloflargevolumeandascreenwithaliningofsoundattenuationmaterial,insertionattenuation 4 dB(A)


AiroutletboxAKmadeofAluzincsheetmetal,with4adjustableoutletgrilles(replaces the Air-Injector)

Insulation IDof the Air-Injector

CondensatepumpKPconsisting of a centrifugal pump, a drip tray, max. delivery rateof150l/hwithadeliveryheadof3m

41

TopVentDKVSpecificationtexts

C

C

C

C

C

C

C

C

C

C

C

C

C

8.3 Control systems

Room temperature control and automatic control of the air distribution by the TempTronic RCProgrammableregulationsystemwithmenu-guidedoperatorcontrol for fully-automatic operation of the TopVentunits:

TempTronicRC,operatorcontrolterminalasawallunitinaplastichousingwithanintegratedroomtemperaturesensor



ActuatorVT-ASforautomaticadjustmentoftheairblow-out direction from vertical to horizontal

Optional module OM for the control of additional func-tions,asawallunitinaplastichousing

Room temperature sensor RF for connection in place of the room temperature sensor that is integrated into the TempTronicRC,inaplastichousingforwall-mountedinstallation


Manual control of the air distribution by means of the potentiometerManual control by means of potentiometer and actuator foradjustmentoftheairblow-outdirectionfromverticaltohorizontal:

PotentiometerwallunitPMS-W Potentiometer for installation into a control panel PMS-S Actuator VT-AS Transformer TA for a maximum of 7 actuators

AB

C

TopVent NHVRecirculation unit for heating high spaces withlowercomfortrequirement(e.g.high-baywarehouses)

D

E

F

G

H

I

J

K

L

M

1 Use ______________________________ 44


3 Technical data ______________________ 46

4 Design example _____________________ 52

5 Options ___________________________ 54

6 Control systems _____________________ 55



44

TopVent NHVUse

1 Use

1.1 Intended useThe TopVent NHV unit is used to heat high spaces in recir-culation mode.Proper use also includes observance of the installation, commissioning, operating, and maintenance conditions (operatinginstructions)specifiedbythemanufactureraswellas the consideration of foreseeable abnormal behaviour and residual dangers.

1.2 User groupTopVent NHV units may only be installed, operated and maintained by authorized and trained skilled personnel. The operating instructions are for English-speaking operating engineersandtechniciansaswellasspecialistsinbuilding,heating and air technology.

1.3 Operating ModesTopVentNHVunitshavethefollowingoperatingmodes:


TheapplicationlimitsspecifiedintheSection'TechnicalData'mustbecompliedwith.Any other use or any additional use counts as being im-proper. The manufacturer shall not be responsible for any damages that may result thereby.

The standard version of the units is not suitable for operationinexplosion-proneareas,inwetroomsorinroomswithahighdustincidence.




supply.

45

TopVent NHVConstruction and operation

D

D

D

D

D

D

D

D

D

D

D

D

D

Heating section

Outlet nozzleFig.D1:ComponentsoftheTopVent NHV


The TopVentNHVunitisusedforlow-costrecirculationheating in high halls. It is installed under the ceiling. It takes inroomair,heatsitintheheatingcoilandblowsitbackinto the room through the outlet nozzle. The air distribu-tioncannotberegulatedwiththeTopVent NHV. The unit isthereforeespeciallysuitableforapplicationsinwhichthecomfort requirement is comparably minor (e.g. high-bay warehouses).Thanks to its high performance the TopVent NHV covers alargearea.Therefore,comparedtoothersystems,fewerunits are needed to achieve the required conditions.3 unit sizes, 2-speed fans, various coil types and a series of accessories make it possible to provide a customized solutionforanyhall.Specialcoils(hotwater,steam,electricheating coils) are also available.The TopVentNHVconsistsoftheheatingsection(withfanand heating coil) and the outlet nozzle. Both components are bolted together, but can be dismantled separately again.

Fig.D2:ConstructionoftheTopVent NHV

Housing:made of corrosion-resistant Aluzinc sheet metalTerminal boxFan:maintenance-free,low-noisesicklefanwithalowenergyconsumptionHeatexchanger:LPHW heating coil consisting of copper tubeswithaluminiumfinsOutlet nozzle

46

TopVent NHVTechnical data

3 Technical data

Unit type NHV-6/A NHV-6/B NHV-6/CFan speed 1 2 1 2 1 2

Rotational speed (nominal) min-1 690 900 690 900 690 900Nominalairflowrate m/h 4600 6300 4400 6100 3900 5500Max.floorareareached1) m 385 573 366 549 319 480Powerconsumption(at400V/50Hz) kW 0.48 0.69 0.48 0.69 0.48 0.69Current consumption (at 400 V / 50 Hz) A 0.78 1.25 0.78 1.25 0.78 1.25Unit type NHV-9/A NHV-9/B NHV-9/CFan speed 1 2 1 2 1 2Rotational speed (nominal) min-1 680 900 680 900 680 900Nominalairflowrate m/h 7100 9400 7100 9400 6500 8600Max.floorareareached1) m 674 1009 674 1009 597 885Powerconsumption(at400V/50Hz) kW 0.70 0.98 0.70 0.98 0.70 0.98Current consumption (at 400 V / 50 Hz) A 1.15 1.75 1.15 1.75 1.15 1.75Unit type NHV-10/A NHV-10/B NHV-10/CFan speed 1 2 1 2 1 2Rotational speed (nominal) min-1 660 860 660 860 660 860Nominalairflowrate m/h 8100 10500 8100 10500 7500 9700Max.floorareareached1) m 811 1194 811 1194 727 1058Powerconsumption(at400V/50Hz) kW 0.99 1.53 0.99 1.53 0.99 1.53Current consumption (at 400 V / 50 Hz) A 1.77 3.35 1.77 3.35 1.77 3.351) Mounting height Hmax=11mwithatemperaturedifferencebetweensupplyairandroomairofupto30K

TableD1:TechnicaldataoftheTopVent NHV

TableD2:Typedesignationcode

Type designation code

NHV 6 / A

Unit typeTopVent NHV

Unit size6, 9 or 10

Heat exchangerCoil type A, B or C

Unit type NHV-6 NHV-9 NHV-10Fan speed 1 2 1 2 1 2Sound pressure level (5 m distance) 1) dB(A) 47 53 52 58 61 68Totalsoundpowerlevel dB(A) 69 75 74 80 83 90Octavesoundpowerlevel 63 Hz dB 75 79 79 83 94 99

125 Hz dB 73 79 74 83 87 94250 Hz dB 68 76 74 79 87 94500 Hz dB 64 70 68 74 80 87

1000 Hz dB 64 71 70 75 77 842000 Hz dB 61 68 68 75 71 784000 Hz dB 54 62 62 68 64 728000 Hz dB 47 55 55 62 55 63


TableD3:SoundpowervaluesoftheTopVent NHV

47


D

D

D

D

D

D

D

D

D

D

D

D

D



NH

V-6

80/60

A1 30 10.4 5 34 1277 27 11.0 4 37 11532 35 14.8 7 31 1522 32 15.7 6 35 1375

B1 41 8.5 9 42 1746 37 9.0 8 44 15762 50 12.1 13 38 2131 45 12.8 11 41 1924

C1 56 6.4 7 56 2399 51 6.7 6 57 21672 72 8.9 11 53 3101 65 9.4 9 54 2800

60/40

A1 17 13.3 2 26 746 14 14.6 2 29 6202 21 19.1 3 24 888 17 21.0 2 28 737

B1 24 10.9 4 30 1018 20 11.9 3 33 8432 29 15.6 5 29 1237 24 17.2 4 31 1024

C1 33 8.0 3 39 1427 28 8.7 2 40 11922 43 11.3 4 37 1835 36 12.4 3 39 1526

NH

V-9

80/60

A1 51 10.8 5 36 2181 46 11.4 4 39 19692 60 14.8 7 33 2560 54 15.7 6 36 2311

B1 64 9.8 8 41 2760 58 10.3 6 43 24902 76 13.2 10 38 3272 69 14.0 9 41 2952

C1 91 7.4 7 55 3921 83 7.8 6 56 35422 113 9.8 10 53 4824 102 10.4 8 54 4356

60/40

A1 30 13.9 2 27 1269 25 15.3 1 30 10532 35 19.2 3 26 1487 29 21.1 2 29 1232

B1 37 12.5 3 30 1602 31 13.7 2 32 13262 44 17.1 4 28 1893 36 18.9 3 31 1566

C1 54 9.3 3 39 2328 45 10.2 2 40 19432 66 12.5 4 37 2852 55 13.7 3 38 2371

NH

V-10

80/60

A1 55 12.5 6 34 2354 50 13.3 5 38 21252 63 16.8 8 32 2721 57 17.8 6 36 2456

B1 70 11.2 9 40 2993 63 11.9 7 42 27002 81 15.0 12 37 3490 73 15.9 10 40 3149

C1 102 8.6 8 54 4365 92 9.0 7 55 39422 123 11.1 11 51 5256 111 11.7 9 53 4745

60/40

A1 32 16.1 2 26 1369 26 17.8 2 29 11352 37 21.8 3 25 1579 31 24.1 2 28 1309

B1 40 14.5 4 29 1735 33 15.9 3 32 14352 47 19.4 5 28 2017 39 21.4 3 31 1668

C1 60 10.8 3 38 2586 50 11.9 2 39 21542 72 14.2 5 36 3102 60 15.6 3 38 2575

Legend: Type = Type of heating coil

St. = Fan speed

Q = Heating output




mW = Waterflowrate

TableD4:HeatingoutputsoftheTopVent NHV

48


HGB

28 E T

4 x M10

NC

J

F

R

A

D

Unit type NHV-6 NHV-9 NHV-10 Return

FlowA mm 900 1100 1100B mm 905 1050 1170C mm 415 480 601 D mm 500 630 630E mm 594 846 846F mm 758 882 882G mm 322 367 488H mm 244 289 410J " 1 (BSP female) 1 (BSP female) 1 (BSP female)N mm 30 30 27R mm 977 1120 1252T mm 40 40 40Weight kg 97 148 182Water content of the coil

Type A B C A B C A B Cl 3.1 3.1 6.2 4.7 4.7 9.4 4.7 4.7 9.4

TableD5:DimensionsandweightsoftheTopVent NHV

Max. operating pressure 800 kPaMaximum heating medium temperature 120 CMaximum supply air temperature 60 CMaximum ambient temperature 40 C

TableD6:ApplicationlimitsoftheTopVentNHV

49


D

D

D

D

D

D

D

D

D

D

D

D

D

X/2 X

ZR

Y

Unit type NHV-6/A NHV-6/B NHV-6/CFan speed 1 2 1 2 1 2Unit height R m 0.977 0.977 0.977 0.977 0.977 0.977Unit clearance X min. m 10 12 10 11 10 11

max. m 19 23 19 23 18 21Mounting height Y min. m 6 6 6 6 6 6Distance from ceiling Z min. m 0.3 0.3 0.3 0.3 0.3 0.3Unit type NHV-9/A NHV-9/B NHV-9/CFan speed 1 2 1 2 1 2Unit height R m 1.12 1.12 1.12 1.12 1.12 1.12Unit clearance X min. m 12 14 12 14 12 13

max. m 25 30 25 30 23 28Mounting height Y min. m 7 7 7 7 7 7Distance from ceiling Z min. m 0.4 0.4 0.4 0.4 0.4 0.4Unit type NHV-10/A NHV-10/B NHV-10/CFan speed 1 2 1 2 1 2Unit height R m 1.252 1.252 1.252 1.252 1.252 1.252Unit clearance X min. m 13 15 13 15 12 14

max. m 27 33 27 33 25 31Mounting height Y min. m 8 8 8 8 8 8Distance from ceiling Z min. m 0.4 0.4 0.4 0.4 0.4 0.4

TableD7:Minimumandmaximumdistances

50


0

10

20

30

40

50

60

70

80

90

100

110

120

3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 80005440

0

10

20

30

40

50

60

70

80

90

100

110

120

5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000

DiagramD1:AirflowrateforTopVentNHV-6withadditionalpressuredrop

Pres

sure

incr

ease

in P

a



NHV-6 / A Speed 2NHV-6 / B Speed 2NHV-6 / C Speed 2NHV-6 / A Speed 1NHV-6 / B Speed 1NHV-6 / C Speed 1



Pres

sure

incr

ease

in P

a


51


D

D

D

D

D

D

D

D

D

D

D

D

D

0

10

20

30

40

50

60

70

80

90

100

110

120

6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000


Pres

sure

incr

ease

in P

a



52

TopVent NHVDesign example

4 Design example

The performance data for the most frequent design rating condi-tionsarespecifiedinSection3'TechnicalData'.Usetheselectionprogram'HK-Select'tocalculatetheperformancedataforotherdesign data (room temperature, heating medium temperature). Youcandownload'HK-Select'freeofchargeontheInternet.


TopVent unit) Heating load Desired room temperature Heatingmediumtemperature(flow/return) Comfort requirements (acoustic)

ExampleGeometry ...................................38 x 62 mMounting height .........................12 mHeating load ..............................290 kWRoom temperature.....................15 CHeating medium temperature ....80/60 CComfort requirements ................Standard

Comfort requirementsDefinethefanspeedinaccordancewithacousticrequirements:Lownoiselevel fanspeed1Normalnoiselevel fanspeed2

Standardfanspeed2

Mounting height Withtheminimummountingheight(TableD7)checkwhichunitscan

be used. Withthemaximummountingheight(TableD4)checkwhichunitscan

be used. Strikeunitswhicharenotadequate.

NHV-6/ANHV-6/BNHV-6/C




IntableD1itisspecifiedwhatmaximumfloorareacanbecoveredbythe TopVentNHV.Foraknownfloorareaitisthenpossibletocalcu-late for each unit size the minimum number of units required.

b)Minimumnumberbasedonlengthxwidth Depending on the geometry of the hall and in relation to its length and widthacertainnumberofunitsisrequired.Thiscanbecalculatedfromthefiguresforthemaximumdistancesbetweentheunitsandbetweenthemandthewall(seeTableD7).

c) Minimum number based on the heating load Depending on the total heat output required, a minimum number of units can be calculated for each unit size (see Table D4).



Type a) b) c)NHV-6/A 5 6 9 9NHV-6/B 5 6 6 6NHV-6/C None NHV-9/A 3 4 5 5NHV-9/B 3 4 4 4NHV-9/C None NHV-10/A 2 4 5 5NHV-10/B 2 4 4 4NHV-10/C None

53

TopVent NHVDesign example

D

D

D

D

D

D

D

D

D

D

D

D

D

Definitive number of unitsChoosethefinalsolutionfromtheremainingpossibilities,dependingonthe geometry of the hall and the costs.

4 units of NHV-9/B

54

TopVent NHVOptions

5 Options

TopVent NHV units can be adapted to the requirements of a particular project by means of a se-riesofoptions.YouwillfindadetaileddescriptionofalloptionalcomponentsinSectionK'Options'of this handbook.






Explosion-proof design for use of the TopVent NHV in explosion-prone areas (zone 1 and zone 2), for NHV-6 and NHV-9 only

55

TopVent NHVControl systems

D

D

D

D

D

D

D

D

D

D

D

D

D

6 Control systems

For the TopVent NHV there are components for control of the room temperature that have been speciallydevelopedbyHovalandoptimallymatchedtotheunits.Youwillfindadetaileddescrip-tionofthesecomponentsinSectionL'ControlSystems'ofthishandbook.

Room temperature control


EasyTronic Thisisasimpletemperaturecontrollerwithoutatimeswitch.The rooms setpoint temperature is adjusted manually and thedesiredfanspeedisselectedbymeansofaswitch.

56

TopVent NHVTransport and installation









TableD3:SuspensionoftheTopVent NHV

7.2 Hydraulic Installation


Combine units that run under the same operating condi-tions (room temperature, heat gains, operating time etc.) to form a control group.


ConnecttheheatingcoilsinaccordancewithFig.D4.Depending on local circumstances it has to be checked whethercompensatorsforthefeedandreturnlinesforcompensation of the linear expansion and/or articulated connections are required for the units.



Fig.D4:Connectionoftheheating coil

max. 45

max. 45


ReturnControl valve

57

TopVent NHVTransport and installation

D

D

D

D

D

D

D

D

D

D

D

D

DFig.D5:TerminaldiagramforTopVent NHV



The unit is supplied ready to operate. Checkwhetherthelocaloperatingvoltage,frequencyand

fuse protection match the data on the type plate. If there are any discrepancies, the unit must not be connected!


Performtheelectricalinstallationworkinaccordancewithwiringdiagramofthecontrolsystem.

Connect the TopVentNHVunitsinaccordancewiththeterminal diagram.



Several TopVent units can be connected by means of a parallel circuit.


Lowspeed(Ycircuit)


(wiringonsite)

(wiringonsite)


Fan

Thermal contact

58

TopVent NHVSpecificationtexts


8.1 TopVent NHV Recirculation unit for heating high spaces with lower comfort requirement

Housing made of non-corrosive Aluzinc sheet metal, stand-ardequipmentwith4rivetingnutsM10withhexagonboltsandwashersforceilinginstallation.Heatexchangermadeofcoppertubesandaluminiumfins,manifolds and distributor made of steel.Fan unit consisting of a 2-speed, 3-phase external rotor mo-torwithpressure-resistantaluminiumsickle-shapedblades,maintenance-freeandquiet,withahighdegreeofefficiency.Motor protection through built-in thermal contacts. Protection class IP54.Terminal box integrated into the side of the housing for con-nection of the supply voltage and the accessories.Concentricoutletnozzlewithasupplyairsensor.


withLPHW ______ ______ C and air inlet temperature ______ ______ C


NHV-6 / A NHV-6 / B NHV-6 / CNHV-9 / A NHV-9 / B NHV-9 / CNHV-10 / A NHV-10 / B NHV-10 / C

8.2 Options



Suspension set AHSfor ceiling installation of the unit consisting of 4 pairs of U-profilesmadeofAluzincsheetsteel,height-adjustableto1300 mm. Paint according to unit.


FilterboxFKwith2classG4bagfilters(accordingtoDINEN779),withadifferentialpressurecontroldeviceformonitoringthefilter



8.3 Control systems

Room temperature control by the TempTronic RCProgrammableregulationsystemwithmenu-guidedoperatorcontrol for fully-automatic operation of the TopVentunits:

TempTronicRC,operatorcontrolterminal,asawallunitinaplastichousingwithanintegratedroomtemperaturesensor



Optional module OM for the control of additional func-tions,asawallunitinaplastichousing

Room temperature sensor RF for the connection in place of the room temperature sensor that is integrated into the TempTronicRC,inaplastichousingforwall-mountedinstallation


Room temperature control by means of EasyTronicSingleswitchingdevicewith2-pointregulationandmanualchangeoverbetweenfanspeed1and2

EasyTronicET,switchingdeviceforheatingmode,asawallunitinaplastichousing,includingroomthermostat

AB

C

D

TopVent commercial CAURoof unit for ventilating, heating and cooling supermarkets

E

F

G

H

I

J

K

L

M

1 Use ______________________________ 60


3 Technical data ______________________ 62

4 Design example _____________________ 66

5 Options ___________________________ 68

6 Control systems _____________________ 69



60

TopVent commercial CAUUse

1 Use

1.1 Intended useThe TopVent commercial CAU is used to ventilate, heat and cool large rooms in fresh air, mixed air and recirculation mode.Proper use also includes observance of the mounting, commissioning, operating, and servicing conditions (operat-inginstructions)specifiedbythemanufactureraswellasthe consideration of foreseeable abnormal behaviour and residual dangers.

1.2 User groupTopVent commercial CAU units may only be installed, oper-ated and maintained by authorized and trained skilled per-sonnel. The operating instructions are for English-speaking operatingengineersandtechniciansaswellasspecialistsinbuilding, heating and air technology.

1.3 Operating ModesTopVentcommercialCAUunitshavethefollowingoperat-ingmodes:

Fresh air, mixed air or recirculation mode atlowfanspeeds(0...100%freshair)

Fresh air, mixed air or recirculation mode at high fan speed (0 ... 100 % fresh air)

Standby Off

TheapplicationlimitsspecifiedintheSection'TechnicalData'mustbecompliedwith.Any other or any additional use counts as improper. The manufacturer shall not be responsible for any damages that may result thereby.

The units are not suitable for operation in explosion-proneareas,inwetroomsorinroomswithahighdust incidence.




supply.

Roof frame

Fresh air roof hood

Mixed air box

Air-Injector

Heating/ cooling section

Fig.E1:ComponentsoftheTopVent commercial CAU


The TopVent commercial CAU unit is for the purpose of ventilating, heating and cooling in fresh air, mixed air or recirculationmode;itwasdevelopedspeciallyforuseinhy-permarkets and supermarkets. The unit is installed by means of its corresponding roof frame in the roof. Depending on the positionofthedampersitdrawsinfreshairand/orindoorair,filters,heatsorcoolsitandblowsitintotheroomthroughtheAir-Injector.Thankstoitshighperformanceandefficientairdistribu-tion the TopVent commercial CAU covers a large area. Therefore,comparedtoothersystems,fewerunitsareneeded to achieve the required conditions.Thanks to its installation in the roof the units do not protrude sofarintotheroomandmaintenanceworkcanbeper-formedfromtheroofwithoutdisturbingoperations.

2.1 Unit constructionThe TopVentcommercialCAUconsistsofthefollowingcomponents:

Freshairroofhood(with2weathergrilles,inspectiondoor,2filtersclassG4andadifferentialpressurecontroldeviceforfiltermonitoring)

Mixedairbox(withfreshairandrecirculationairdamperslinked to move in opposite directions and an actuator)

Roof frame Heating/coolingsection(withfan,heatexchangerand

integrated condensate separator for the condensate incurred)

Automatically adjustable vortex air distributor Air-InjectorThe roof hood and the heating /cooling section are insulated to avoid condensation on the external surfaces. The compo-nents are bolted together, but can be dismantled separately again.

61

TopVent commercial CAUConstruction and operation

E

E

E

E

E

E

E

E

E

E

E

E

E

2.2 Air distribution by means of the Air-InjectorThe patented air distributor called the Air-Injector is the core element. The discharge angle of the air is set using theadjustablevanes.Itdependsontheairflowrate( fan speed), the mounting height and the temperature difference betweenthesupplyairandroomair.Theairisthereforeblownverticallydownwards,conicallyorhorizontallyintothe

Fig.E2:ConstructionoftheTopVent commercial CAU

room. This ensures that witheachTopVent commercial CAU unit a large area of

the hall is heated, the occupied area is draught-free, thetemperaturestratificationintheroomisreduced,thus

saving energy.

Housing:made of corrosion-resistant Aluzinc sheet metal; the heating/cooling section is insulatedHeatexchanger:LPHW/LPCW coil consisting of copper tubeswithaluminiumfinsTerminalbox:withanisolationswitch,easilyaccessiblebehind the inspection door.Roof hoodinsulated,easytoremovewith4handles,with2weathergrilles,2G4filtersandapressurecontroldeviceforfiltermonitoringMixedairbox:withfreshairandrecirculationairdamp-ers linked to move in opposite directions (dampers made of extruded aluminium profilesectionandplasticgearwheels)andan actuatorRoofframe:made of sheet steel (insulation on site)Fanmaintenance-free,low-noisesicklefanwithalowenergyconsumptionFrostprotectionthermostat:installed in the heat exchangerCondensateseparator: withcondensateconnectionAir-Injector:patented, automatically adjustable vortex air distributor for draught-free air distribu-tion over a large area

62

TopVent commercial CAUTechnical data

3 Technical data

Unit type CAU-9/DFan speed 1 2

Rotational speed (nominal) min-1 660 860Nominalairflowrate m/h 5200 6800Max.floorareareached1) m 447 635Powerconsumption(at400V/50Hz) kW 1.00 1.65Current consumption (at 400 V / 50 Hz) A 1.80 3.501) Mounting height Hmax=11mwithatemp.differencebetweensupplyairandroomairofupto30K

TableE1:TechnicaldataoftheTopVent commercial CAU

TableE2:Typedesignationcode

Unit type reference

CAU 9 / D / DN5

Unit typeTopVent commercial CAU

Unit sizeSize 9

Heat exchangerCoil type D

Electrical connectionDN5 = DigiNet 5KK = Terminalbox

Unit type CAU-9 outside in the roomFan speed 1 2 1 2Sound pressure level (at a distance of 5 m) 1) dB(A) 48 55 57 62Totalsoundpowerlevel dB(A) 70 77 79 84Octavesoundpowerlevel 63 Hz dB 82 86 90 93

125 Hz dB 70 81 85 88250 Hz dB 74 82 85 88500 Hz dB 66 75 76 81

1000 Hz dB 62 68 73 782000 Hz dB 55 62 67 724000 Hz dB 49 52 60 668000 Hz dB 36 39 51 57


TableE3:SoundpowervaluesoftheTopVent commercial CAU

63


E

E

E

E

E

E

E

E

E

E

E

E

E

Air inlet temperature 1) 15 C 20 CSize LPHW Type St. Q Hmax pW tS mW Q Hmax pW tS mW


CA

U-9 80/60 D 1 2) 2

60/40 D1 61 7.0 3 45 2628 54 7.6 2 45 23332 77 9.0 4 43 3301 68 9.9 3 44 2928

1) The air inlet temperatures (15 or 20 C) are equal to the room air temperature. The quoted heating outputs relate to a fresh air rate of 20 % (at -10 C); i.e. the mixed air temperatures before the heating coil are 10 or 14 C.

2) These operating conditions are not permissible, because the maximum supply air temperature of 60 C is exceeded.

Legend: Type = Type of heating/cooling coil

St. = Fan speed

Q = Heating output




mW = Waterflowrate

TableE4:HeatingoutputsoftheTopVent commercial CAU

Cooling medium temp. 6/12 C 8/14 CType tAI 1) rh St. Qsen Qtot pW tS mW mC Qsen Qtot pW tS mW mC

C % kW kW kPa C l/h kg/h kW kW kPa C l/h kg/h

CA

U-9

/D 2450

1 27 38 12 11 5495 16 24 30 7 13 4298 92 34 48 17 12 6799 19 30 37 11 14 5291 10

701 27 57 24 12 8164 43 23 49 18 13 6973 362 34 71 35 12 10139 53 29 60 26 14 8631 44

2850

1 33 54 21 12 7644 30 29 45 16 14 6453 232 41 66 31 12 9490 36 37 56 23 14 7982 27

701 32 76 40 12 10883 62 29 68 32 14 9685 552 40 95 60 13 13547 77 36 84 48 14 12020 68

1) The air inlet temperatures (24 or 28 C) are equal to the room air temperature. The quoted cooling capacities relate to a fresh air rate of 20 % (at +32 C); i.e. the mixed air temperatures before the heating coil are 25.6 or 28.8 C.

Legend: Type = Unit type

tAI = Air inlet temperature

rh = Air inlet humidity

St. = Fan speed

Qsen = Sensitive cooling capacity

Qtot = Total cooling capacity



mW = Waterflowrate

mC = Amount of condensate

TableE5:CoolingcapacitiesoftheTopVent commercial CAU

64


820

410

1025

1860

1706

1800

1100

14421740

1126

1220

882

1096

623

80

1001

1025

Rp 2"Rp 2"

R 1"

Unit type CAU-9/D Return

Flow

Condensate drain connection

Access panels

Weight kg 510Water content of the coil l 14.2

TableE6:DimensionsandweightsoftheTopVent commercial CAU

Max. operating pressure 800 kPaMaximum heating medium temperature 120 CMaximum supply air temperature 60 CMaximum ambient temperature 40 CMaximum amount of condensate 150 kg/hMinimumairflowrate 5000 m/h

TableE7:ApplicationlimitsoftheTopVent commercial CAU

65


E

E

E

E

E

E

E

E

E

E

E

E

E

X/2 X

Y

Unit type CAU-9/DFan speed 1 2Unit clearance X min. m 11 12

max. m 21 25Mounting height Y min. m 5 5

TableE8:Minimumandmaximumdistances

DiagramE1:AirflowrateforTopVentcommercialCAU-9withadditionalpressuredrop

0

10

20

30

40

50

60

70

80

90

100

110

120

4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 90006180

CAU-9 / D Speed 2CAU-9 / D Speed 1


Pres

sure

incr

ease

in P

a


66

TopVent commercial CAUDesign example

4 Design example

The performance data for the most frequent design conditions are specifiedinSection3'TechnicalData'.Usetheselectionprogram'HK-Select'tocalculatetheperformancedataforotherdesigndata (room temperature, cooling medium temperature). You can download'HK-Select'freeofchargeontheInternet.

Thefollowingdesignratingexamplerelatestocoolingmode.Thedesign rating for heating mode can be performed analogously to thedesignratingexampleinSectionG'TopVentMH'.


TopVent unit) Cooling load Desired room conditions Cooling medium temperature (supply/return line) Comfort requirements (acoustic) Fresh air temperature Minimum fresh air rate (the fresh air rate can be adjusted from 0 %

to 100 %; for energy reasons it has to be kept to a minimum in the design conditions).

ExampleGeometry ...................................65 x 75 mMounting height .........................6 mCooling load...............................175 kWRoom conditions ........................24 C / 50 %Cooling medium temperature ....8/14 CComfort requirements ................StandardFresh air temperature ................32 CMinimum fresh air rate ...............20 %

Comfort requirementsDefinethespeedlevelinaccordancewiththeacousticrequirements:Lownoiselevel fanspeed1Normalnoiselevel fanspeed2

Standardfanspeed2

Mounting heightWiththeminimummountingheight(TableE8)checkwhethertheunitcan be used.

CAU-9/D

67

TopVent commercial CAUDesign example

E

E

E

E

E

E

E

E

E

E

E

E

E


IntableE1itisspecifiedwhatmaximumfloorareacanbecoveredbythe TopVentcommercialCAU.Foraknownfloorareaitisthenpos-sible to calculate for each unit size the minimum number of units required.

b)Minimumnumberbasedonlengthxwidth Depending on the geometry of the hall and in relation to its length and widthacertainnumberofunitsisrequired.Thiscanbecalculatedfromthemaximumdistancesbetweentheunitsandbetweenthemandthewall(seeTableE8).

c) Minimum number based on the cooling load Depending on the total cooling capacity required, a minimum number of units can be calculated for each

topvent_4209245_en_2012-01

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