natural air ventilators · louvre and damper frame extruded aluminium grade enaw 6063t6 to bsen...

There’s a much bigger picture to be found at Ruskin Air Management.

www.naco.co.uk

Ruskin Air

Managementactionair Air Diffusion naco

May 2014

● Manual Control

● Motor Control

● Fail Safe Open/Close

● Anti-Finger Trap

● Heating Coils with OptionalFan Assistance

● Acoustic Options

● Roof Terminals

● Mixed Mode via Fan Coils

● Control Panels

● Choice of External Louvres

● Choice of Internal Grilles

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Natural AirVentilatorsMetal louvre / dampercombination

Contents

Our ideas built with you in mind 3

Natural Ventilation Theory/ Naco Product Solutions 4 - 5

Generic Building Cross Section 6 - 7

NAV WI and WA 8

NAV WA+ 9

NAV WL and WLI 10

NAV WI/HC and WA/HC 11

NAV WI/HC/DBF and WA/HC/DBF 12

NAV Roof Terminal RT/RTD 13

Heating Coil 14

Dynamic Fan System 15

Fan Coils 16

Complementary Products 17

Control Options 18 - 19

Specification Details 20 - 21

Photographs / Misc 22 - 23

Natural Air Ventilators

2

Our ideas built withyou in mind

Learning to harnessnature’s elements

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When someone says it can’t be done, they’veobviously not spoken to us. So if anyone in theindustry suggests that you are asking for theimpossible, it will always be our privilege to provethem wrong yet again.

From start to finishBecause unlike most UK louvre companies, we design,detail, supply and install. So not only do our productsmatch your requirements precisely in terms of functionbut also in style, finish and colour.

This determination to see things through to the finishedresult gives architects and designers a unique opportunityto create outstanding ventilation features or screeningcontrols within the external cladding. And our can-doattitude makes those satisfied clients come back to ustime and time again.

Past, present and futureSince the early sixties this customer-first philosophy hasbeen enshrined in all our activities. Blended withmanufacturing experience and practical expertise honedover almost half a century, it has seen Naco defineeverything from metal and glass louvres, natural air andsmoke ventilators to mist separators, sunscreens andbrise soleil. It even instigated a no-nonsense softwareprogram on our website to take the hassle out of sizinglouvres and unscrambling such things as face, jet or corevelocities and free areas.

An ideal environmentBut user friendliness isn’t the only challenge facingbuilding design today. Increasingly environmentalfriendliness is now a design pre-condition, reflecting agrowing duty to protect the natural environment whilstcontrolling our own internal environments.

Learning to harness nature’s elements to our advantagerather than simply fighting against them is now drivingforward our engineering and design teams more thanever. And their progress can be measured by thecomprehensive range of Natural Air Ventilators featuredhere in our latest product portfolio.

Natural Ventilation Theory /Naco Product Solutions


4

Wind EffectThe wind blowing against thebuilding (Windward) sidecreates a positive pressureon that side of the building.This in turn creates anegative pressure on theopposite side (Leeward) side.

Through the correctpositioning of ventilators toboth sides of the building,often together with a roofterminal, airflow is producedflowing from the windwardside towards the leewardside.

Stack Effect(Chimney Effect)This method does not rely somuch on the wind, but moreon the buoyancy effectcreated by the warmer airinside the building being lessdense than the outside coolerair.

By the use of a roof terminalor high-level ventilators, thewarmer stale air will rise upand exhaust through the highlevel ventilators, and thismovement of air will draw inthe outside air at low level.

The stack effect method isusually more reliable than thewind driven one.

Cool fresh air

Positive Pressure

Warm stale air

Windward Side

Wind Direction

Leeward Side

Negative Pressure

Warm stale air Warm stale air

Cool fresh air

Warm staleair rising

Cool fresh air

NaturalVentilationPrinciples Wind Driven

Stack Effect

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Ventilation with fan system

Fan Coil unit

Stairwell

Ventilation with heater coil and fan system

Fan Coil unit

Stairwell

Wind Effect

Stack Effect

Mixed Mode (Hybrid System)To allow building designers greater flexibility andto alleviate some of the vagaries that our weathercan have on the efficient function of both thewind driven and stack systems, Ruskin can offera mixed mode system, to complement a totallynatural system.

This can encompass a range of NAV ventilatorsfitted with heating coils, either with or without fanassistance and fan coil units.

Control systems would enable the motoriseditems in the hybrid system to only be called onwhen deemed necessary.

Mixed mode is particularly useful for winterheating and summer cooling applications whenthe natural system might struggle to provide theoptimum room ventilation conditions.

Natural Ventilation Benefits● Natural ventilation systems have now becomethe favoured approach to providing theventilation solutions for schools, universities andlow-rise buildings in general.

● Natural ventilation offers significant benefits overmechanical systems on these types of buildings.

● Significant cost savings, both on the initialinstallation cost and the ongoing service andmaintenance costs are evident.

● Running costs are also significantly lower, withlittle or no power consumption required,depending on the type of system selected.

● Construction costs can also be reduced, whilstgiving the architect more room for manoeuvre,as there is no longer any need to allow for plantrooms.

● Free night cooling is also readily available toreduce energy loads on the building.

● There is also evidence that natural ventilationsystems offer health benefits to the buildingoccupants, with cases of ‘Sick BuildingSyndrome’ becoming a thing of the past.

Summer

Winter

Generic BuildingCross Section


6

Roof TerminalsProvide an efficientmethod of allowing thewarm stale air toescape. Also they areused for allowing theentry of fresh outsideair in wind drivenapplications.

Solar ShadingReduces the heatgain into buildingsand therefore lowersthe ventilation andenergy requirements.

Vengen GlassLouvresProvide controlledventilation with highfree areas and theadded benefit ofdaylight.

The primary components of our NaturalVentilation range are the NAV units detailed onpages 8-13. However several more productsfrom Ruskin Air Management Ltd are availablethat are perfectly suited to enhancing a naturalventilation scheme. A number of theseproducts are showcased on the building belowand are described on page 17 under‘Complementary Products’.

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Transfer Grilles (G45)A convenient way toallow air to pass throughinternal partitions,towards the roof terminalzones.

Fan CoilsFan Coils have beenchosen from the provenActionair range and arebased on the Hydropaceco friendly unit ModelEC. Featuring low noise,low energy fans withminimal fan heat with fullacoustic and thermalinsulation.

Fan Floor SwirlsCan be considered for usein floor void situations. Thefan will induce cool freshair at low level and this willdisplace the warm stale airthrough the extract ortransfer grilles.

Nav UnitsProvide controllednatural ventilation andfree night cooling.Optional tempering ofthe incoming air.

A general purpose range of Natural Air Ventilatorscombining class leading air-tightness, together withexcellent ‘U’ values and sound reduction..

NAVWA&WI


8

MaterialsLouvre and damper frameextruded aluminium gradeENAW 6063T6 to BSEN 755.

Frame ConstructionThermally broken frame anddamper blades. Screw joints asstandard.

External Louvre OptionsSlimtype, 50, 75, SLH-S.

Optional Internal GrilleIf required NAV WA and WI canbe specified with a choice ofinternal grilles from the AirDiffusion range.

FinishesExtruded aluminium (mill finish)Polyester powder coated to BS6496. Anodised to BS 3987.

Bird Wire GuardFitted as standard,18gexpanded aluminium.

Insect ScreenIf specified, 23g expandedaluminium.

Free AreaSLH-S 53%75S 50%50S 47%Slimtype 40%

CdSLH-S 0.31275S / 50S 0.213Slimtype 0.161

Air Leakage at 50 PaLength of joint: 0.1m3/h/mArea: 0.6 m3/h/m2

Wind Driven Rain RatingSLH-S and SlimtypeClass A up to 1 m/s75S and 50SClass B up to 1 m/s

Operation1. Manual handle*(Not available if internal grille isspecified).

2. 24V AC 10Nm actuator withmodulating action or simplydrive open and drive closed.

3. 24V AC/DC 7Nm ‘fail-safe’spring open or close actuatorwith modulating action or simplyspring open and drive close (orvice-versa).

4. 24 V DC linear type motorwith ‘anti-finger trap’ function.*(A minimum ventilator heightapplies to this option).

Damper Blade Type WA The acoustic panel providesapproximately 32 Db soundreduction in the closed position.

Damper Blade Type WI The insulated panel is rated at1.15W/m2 K thermal value.(Specific U values for any givensize of ventilator can beprovided. Please consult ourSales Office).

SizesSingle ventilator minimum 300 W x 330 H (7Nm and 10Nmactuators) 300 W x 403 H (Manual handle) 300 W x 565 H (Anti-finger trap)

Single ventilator maximum1400 W x 2400 H

Double ventilator maximum2800 W x 1500 H

Note: Slimtype louvres will berestricted to a standardmaximum size of either 1000 W x 2400 H or 2800 W x 1000 H

Acoustic Ventilator – NAV WAInsulated Ventilator – NAV WI

Slimtype = 22350S = 25775S = 277

SLH-S = 307

External Louvre featured = SLH-S

Opt

iona

l Int

erna

l Gril

le

Optional Internal Grille

Specification

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Maintains the features of the NAV WA and WI andprovides enhanced sound reduction capabilities.

NAVWA +



Acoustic TreatmentInternal chevron type, acousticlouvre. Acoustic lining to interiorof ventilator casing.


Internal Grille OptionsN/A

FinishesExtruded aluminium (mill finish)Polyester powder coated to BS 6496. Anodised to BS 3987.

Bird Wire GuardFitted as standard,18g expanded aluminium.


Operation



Damper Blade Type WA+In most circumstances bladetype WA would be used,however blade type WI is alsoavailable.

SizesSingle ventilator minimum.300 W x 330 H

Single ventilator maximum.1400 W x 2400 H

Double ventilator maximum.2800 W x 1500 H

Note: Slimtype louvres will berestricted to a standardmaximum size of either 1000 W x 2400 H or 2800 W x 1000 H

CouplingVentilators may be coupledhorizontally or vertically.

Free AreaCirca 40% (all variants)


Wind Driven Rain RatingClass A up to 1m/s (all variants)

Acoustic RatingClosed 24 Db25% open 15 Db50% open 11 Db75% open 8 Db

Slimtype = 28250S = 29875S = 332

SLH-S = 352

Ove

rall

Cha

nnel

Overall Channel

O

Specification


A budget range of ventilators maintainingvery good air-tightness.

NAVWL&WLI


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Frame ConstructionScrew joints as standard.

External Louvre OptionsSlimtype, 50, 75, SLH-S

Optional Internal GrilleIf required NAV WL and WLI canbe specified with a choice ofinternal grilles from the AirDiffusion range.

FinishesExtruded aluminium (mill finish)Polyester powder coated toBS 6496. Anodised to BS 3987.



Free AreaSLH-S 53%75S 50%50S 47%Slimtype 40%

CdSLH-S 0.3675S / 50S 0.24Slimtype 0.19


Operation

1. Manual handle*(Not available if internal grille isspecified).



Damper Blade Type WLSolid skin extruded aluminium.

Damper Blade Type WLI31mm thick compositeinsulation panel xps and alveofoam bonded to 1.5 powdercoated aluminium sheet. Theinsulated panel is rated at1.15W/m2 (Specific U values forany given size of ventilator canbe provided. Please consult ourSales Office).

SizesNote: Slimtype louvres will berestricted to a standardmaximum size of either 1000 W x 2400 H or 2800 W x 1000 H


Air Leakage at 50 PaLength of joint: 0.5 m3/h/mArea: 4.1 m3/h/m2

Ove

rall

Cha

nnel

Opt

iona

l Int

erna

l Gril

le

External Louvre featured = Slimtype

Overall Channel

Optional Internal Grille

Specification

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Maintains the features of the NAV WA and WI but fittedwith a heating coil to temper the incoming air.

NAVWI/HC& WA/HC



Heating CoilRefer to page 14 for technicaldetails.

External Louvre OptionsSlimtype, 50, 75, SLH-S

Internal Grille OptionsA range of grilles are availablefrom the Air Diffusion range.


Bird Wire GuardFitted as standard, 18g expanded aluminium.


Free AreaN/A

CdN/A



Operation2. 24V AC 10Nm actuator withmodulating action or simplydrive open and drive closed.


Damper Blade Type WAThe acoustic panel providesapproximately 32 Db soundreduction in the closed position.

Damper Blade Type WIThe insulated panel is rated at1.15W/m2 K thermal value.(Specific U values for any givensize of ventilator can beprovided. Please consult ourSales Office).

SizesA wide variety of sizes areavailable, please consult ourSales Office for your specificrequirements.


SLIMTYPE = 32550S = 36075S = 380

SLH-S = 410

Specification


Maintains the features of the NAV WI/HCand WA/HC with the ability to temper theincoming air with fan assistance.

NAVWI/HC/DBF&WA/HC/DBF


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Heating CoilRefer to page 14 for technicaldetails.

Dynamic Boost FanRefer to page 15 for technicaldetails.


Internal Grille OptionsA range of grilles are availablefrom the Air Diffusion range.




Free AreaN/A

CdN/A



Operation2. 24V AC 10Nm actuator withmodulating action or simplydrive open and drive closed.




SizesA wide variety of sizes areavailable, please consult ourSales Office for your specificrequirements.


Slimtype = 37350S = 40875S = 428

SLH-S = 458

O

Ove

rall

Cha

nnel

Overall Channel

O

Specification

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Roof Terminal Air Inlet – Air Exhaust

NAVRT/RTD


Frame ConstructionScrew joints as standardMitred and welded corners.Pressed aluminium roof.

External Louvre OptionsSLH-S.

FinishesExtruded aluminium (mill finish)Polyester powder coated toBS 6496. Anodised to BS 3987.



Free Area53%

Cd0.261


Wind Driven Rain RatingClass A up to 1 m/s

Operation





SizesL x W x H

W

L

Specification


The inclusion of a heating coil allows extraflexibility to your natural ventilation system.

Heating Coil


14

Heating Coil Type 19Is a low-H20 heat exchanger which enables efficient output to be receivedat low flow temperatures. Tested to 20 bar. Working pressure 10 bar.

Pipework Connections1/2” BSP female connections can be of ‘Standard’ Type or‘Alternative’ Type (see illustration)

1/2” BSP Drain Connection1/2” BSP Vent Connection

Type 19other end connection

Type 19

20

INLET

INLET

RETURN

RETURN

Specification

Pressure Drop Charts

During certain times of the year outside air may be toocold for direct entry into the building. Therefore aheating coil can temper the incoming air to allow thedesired ventilation rates to take place.

Type 19 Standard

Type 19 Alternative Heat Output Against Flow Rate

Type 19 standard connection

Type 19 alternative connection

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Dynamic FanSystem

Every set includes a control panel, control unit, power supply andinstruction manual.

The panel is fitted with a water temperature sensor and a roomtemperature sensor both of which continue to operate the systemin Automatic Mode simply by selecting a room temperature (thefactory setting is position 6 that configurates to a value of 22°C).

Automatic: The speed of the fan will automatically modulate untildesired temperature is reached with the fan speed dropping to astandstill at the set level.

Boost: Fan will run at maximum speed for 15 minutes beforereturning to automatic.


During times when the outside air movement is notfavourable to a natural ventilation system, the DynamicFan System can assist to create passive ventilation ofcool air in summer or increases the heat output fromthe heating coil to the occupied zone on colder days.

Control of Dynamic Fan System Modes

The Dynamic Fan System simply‘snap’ fits over the heating coiland requires a 220V AC electricalsupply locally to supply the 24VDC transformer supplied with thesystem.

Control PanelSet desired roomtemperature at itsmaximum

Control Unit

Watertemperaturesensor

Roomtemperaturesensor

11 °C min air off 14 °C min air off

ChW 6°C flow,11°C return ChW 10°C flow,14°C return

Model Speed Airflow Sensible Total Sensible/Total Cooling Heating Fan Input N.R.Setting (I/s) Cooling Cooling (Watts) (Watts) (Watts) Guide*

(Watts) (Watts) EHW

2 110 1530 1890 1180 2150 33 30

3 125 1710 2080 1300 2290 40 32

4 150 2020 2430 1520 2500 50 35

5 175 2320 2800 1730 2700 61 38

6 185 2400 2890 1780 2800 68 40

2 230 3300 4010 2550 4910 67 30

3 275 3900 4720 2990 5410 87 32

4 340 4800 5800 3640 5910 109 35

5 405 5400 6370 4290 6510 134 38

6 445 5600 6450 4670 6910 160 40

Fan coils have been chosen from the proven Actionair rangeand are based on the Hydropac eco friendly unit Model EC.

Fan Coils

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• Low noise levels• Outputs available (6.4 Kw cooling) and (6.9 Kw heating)• Very low energy fans• Full acoustic and thermal insulation• BMS control• Minimal fan heat

Specification Hydropac EC Fancoil Units

EHW230Hydropac EC (Series EHW)Actionair Hydropac horizontal ceiling void mounted type fan coils arewaterside control, suitable for operation against moderate ductresistances, using chilled water cooling medium and low pressure hotwater heating medium. Temperature control is by means of modulating 2 or 4-port diverting valves on heating and cooling, operated by standalone or BMS controller with room or return air temperature sensor.Designated ‘EHW’, the series consists of standard 230mm (EHW230)deep. A total of 6 modes are available to achieve the required roomconditions. The table below shows data for the smallest modelEHW232 and largest model EHW235X.

Air DiffusionPlenum / Grille

ActionairVolume ControlDamper

Actionair Fan Coil Unit

ActionairControl

LPHW 82°C flow 72°C return

EHW232

EHW235X

Cooling:Summer On-coil air 23 °C Dry Bulb, 16 °C Wet Bulb. Max Coil Pd = 20kPa

Heating:Winter On-coil air temperature 20 °C Dry Bulb. Max Coil Pd = 10kPa

The Fan Coil selections arebased on the following enteringair conditions:

General: External Resistance 30Pa. Electrical Supply 230 Volts/ 1 phase /50 Hz. Please refer to our Fan Coil TechnicalDepartment for alternative conditions. See page 11 for NR Predictions.

Hydropac EC (Series 230 EHW) Waterside control 230mm deep ceiling void mounted chassis unit.


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ComplementaryProducts

Roof TerminalsProvide an efficientmethod of allowing thewarm stale air to escape.Also they are used forallowing the entry of freshoutside air in wind drivenapplications.

Solar ShadingReduces the heat gaininto buildings andtherefore lowers theventilation and energyrequirements.

Nav UnitsProvide controlled naturalventilation and free nightcooling. Optionaltempering of the incomingair.

Vengen GlassLouvresProvide controlledventilation with high freeareas and the addedbenefit of daylight.

Transfer Grille(G45)A convenient way to allowair to pass throughinternal partitions, towardsthe roof terminal zones.

Fan CoilThe fan coils have beenchosen from the provenActionair range. Featuringlow noise, low energyfans with minimal fan heatwith full acoustic andthermal insulation.

Fan Floor SwirlsCan be considered foruse in floor voidsituations. The fan willinduce cool fresh air atlow level and this willdisplace the warm staleair through the extract ortransfer grilles.

Wide Blade BarGrille (WB)An alternative robust grille that is suitable foruse in areas such asgymnasiums.


NATURAL VENT CONTROL PANEL MODELS VCP-01 / VCP-04

Control Options

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Description

Product Information

Specification

Components

Natural Vent Control Panel Models VCP-01/ VCP-04 are especiallydesigned for use in separate rooms or small zones. Due to the largeamount of Naco accessories various functions can be added, e.g.automatic weather, room temperature and indoor air quality (CO2)control. It is possible to connect several ventilation control panels inorder to enable central switching, e.g. closing in case of wind or rainor time-controlled ventilation.

• Compact ventilation control

• For separate rooms and small zones

• For triggering of 24V DC drives

• 1 ventilation group

• 1A or 4A actuating current

• Single or central switching (OPEN/CLOSED)

MaterialPlastic

Features

• Compact design for 1A or 4A actuating current in one group.

• Plastic housing, surface mounting type.

• Connection of drives with TMS function possible.

• Ventilation safety function (deadman’s principle OPEN/CLOSED),can be firmly encoded.

• Entry for external control, e.g. timer.

• Possibility of connecting rain detector or wind/rain detectorwithout supplementary module.

• Possibility of central weather monitoring (central CLOSED) inconjunction with several VCP-0X.

• Vent buttons, window drives, weather sensors, indoor air qualitysensor (CO2) and room temperature controllers available asaccessories.

Models VCP-01/ VCP-04

Temperature Sensor

Rain Detector

Vent Open/Close Switch


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Other Control Options

For situations that do not call for the features of the VCP ControlPanel, the ventilation can be controlled by the following twomethods.

MOTOR CONTROLVia the vent open/ close switch

MANUAL CONTROL: Via lever handle

External Controlor

Air Temperature Sensor or

Indoor Air Quality Sensor (CO2)

Models VCP-01/ VCP-04

Rain Detector

Ventilation Drives

Vent Open/Close SwitchNaco NAV unit Damper

For larger systems we can offer a full design, manufacture and installation package. Please contact Naco for full details.

Type VCP-01 VCP-04

Power supply 230V AC /50Hz, 30VA 230V AC / 50Hz, 160VA

Output 24V DC, maximum 1A 24V DC, maximum 4A

Class of rating Short-time duty, 20% ED Short-time duty, 20% ED

Protective system IP 50 IP 30

Range of temp –5°C to +60°C –5°C to +40°C

Housing Plastic Plastic

Colour RAL 7035, light grey RAL 7035, light grey

Size W x H x Dmm 139 x 119 x 70 170 x 135 x 85

Technical Data

Application Example


Specification Details

20

Manufacturing Sizes: The external louvre sizes will determine the dimensions of thedamper assembly and optional interior grille.

Finishes: The finish selected for the external louvre will as standard beapplied to the damper assembly and optional interior grille unlessspecified differently.

EXTERNAL LOUVRE

Blade Type Slimtype, 50, 75, SLH-S

Border TypeA, AC

Glazing AdaptorGA28 (standard)(other options available, please specify)

ScreeningBird Wire Guard (standard) BWGInsect Screen (optional) I.S

FinishPolyester Powder CoatingRAL-Ref NoSatin AnodisedSAMill FinishMF

ScreeningManufacturing Sizes (W x H)GA = o/a channelA, AC = Nominal opening

INTERIOR GRILLE OPTIONS

Model PG (perforated grille)EC (egg crate grille)WB0 (wide blade grille)

FinishSTD (as for external louvre)(Other, please specify)

50 / AC / ---- / I.S / RAL 9010 / 1400 x 600

PG / STD


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ROOF TERMINAL

Model NAV

Damper OptionRT (without damper) RTD (with damper)

Damper TypeWA, WI

Operation2, 3

FinishPolyester Powder Coating RAL-Ref No

Satin AnodisedSA

Mill FinishMF

Manufacturing Sizes (L x W x H)(to suit builders up stand dimensions)

DAMPER

Model

Damper TypeWA, WI, WI +, WL, WLI

Heating CoilHC

Dynamic Boost FanDBF

Operation1, 2, 3, 4

Operation HandingLH or RH (viewed from inside)

FinishSTD (as for external louvre)(Other, please specify)

NAV / WA / HC / - / - / 2 / RH / STD

NAV / RTD / WA / 3 / RAL 9007 / 1400 x 1200 x 950




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Ruskin Air Management Limited,Stourbridge Road, Bridgnorth,Shropshire, WV15 5BB England.

Tel: 01746 761921Fax: 01746 766450

www.naco.co.uk

The statements made in this brochure or by our

representatives in consequence of any enquiries

arising out of this document are given for information

purposes only. They are not intended to have any

legal effect and the company is not to be regarded

as bound thereby. The company will only accept

obligations which are expressly negotiated for and

agreed and incorporated into a written agreement

made with its customers.

Due to a policy of continuous product development

the specification and details contained herein are

subject to alteration without prior notice.

A sample of the many products available from Ruskin Air Management

actionair

Air Diffusion

naco

naco

natural air ventilators · louvre and damper frame extruded aluminium grade enaw 6063t6 to bsen...

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