Technical documentation

CGL

Comfort large area ventilation units

Titel Dokumentation CGL_Umschlag 09.12.13 13:20 Seite 1

2

Wolf CGL comfort large area ventilation units are designed as internal appliances for controlled ventilation in individual rooms. Alongside their primary use in classrooms and kindergartens, the units are also ideal for applications in conference rooms, club houses and restaurants, offices and canteens.Wolf CGL comfort large area ventilation units provide rooms with filtered outdoor air, the volume of which can be adjusted to ensure sufficient supply. At the same time, a corresponding volume of used ambient air containing CO2 is removed and expelled. This results in other pollutants such as odours, fine dust, moisture etc. being removed effectively as well. Heat is recovered via an aluminium countercurrent plate heat exchanger with efficiency levels up to and exceeding 90%.

• decentralisedinstallationdirectintherespectiveoccupiedroomorancillaryroom

• The units fulfil the associated stringent requirements on noise emissions for direct installation in the occupied room

• minimisedenergyconsumptionforairtransportationbymeansofdecentralisedinstal-lation in the occupied room

• latestECmotortechnologywithminimalpowerconsumption

• continuously variable ventilation of the space according to demand is possible due to a CO2 sensor (accessory)

• recommended application range from 300 m3/h to 800 m3/h.

The units comply with all the relevant standards and guidelines:

- VDI 6022 Hygienic requirements for ventilating and air-conditioning systems and air-handling units

- VDI 3803 Air-conditioning - Central air-conditioning systems - Structural and technical principles

-DINEN13779 Ventilation of non-residential buildings - General principles and requirements

-2006/95/EG Lowvoltagedirective

-2004/108/EG EMCguideline

-2006/42/EG MachineryDirective

Application

Index

Index / ApplicationApplication .................................................................................................................................................. 2

Specification / Dimensions ..................................................................................................................... 3

Performance diagrams .........................................................................................................................4-5

Unit design .................................................................................................................................................. 6

Component description ...........................................................................................................................7

Accessories ..............................................................................................................................................8-9

Intake / discharge accessories .............................................................................................................10

Design information .......................................................................................................................... 11-15

3

Specification / DimensionsSpecification(Free air intake / free outlet)

CGL

Air volume 500 m³/h 600 m³/h 800 m³/h

Electricalpowerconsumption 100W 150W 255 W

Connected voltage 230 V (50/60 Hz)

Soundpressurelevel1mfromtheunit

37dB(A) 40dB(A) 45dB(A)

Height incl. feet and connecting collar

2137mm

Width 1017mm

Depth 508 mm

Weight 250 kg

Dimensions

Design options:

Front view Side view

3519

32

2137

170

1017 508

Plan view

205 607 205

287

508,5508,5

222

Connections for:- Supply air-Exhaustair- Outdoor airØ 250 mm

EHA

SUP

SUP

EHA

EHA

EHA

EHA

ODA

ODA

CGL li

CGL re

4

80

81

82

83

84

85

86

87

88

89

90

91

200 300 1000600 700 900800400 500

94

93

92

95

96

200 400 500 600 700 9000

50

25

75

100

125

150

175

225

200

250

275

300

325

350

800300 1000

1000

200 400 500 600 700 900300

400

350

450

500

550

600

650

750

700

800

850

900

950

800300 1000

24

28

26

30

32

34

36

38

42

40

44

46

200 400 500 600 700 900800300 1000

48

200 400 500 600 700 900800300

8,0

1,0

2,0

3,0

4,0

5,0

6,0

7,0

9,0

1000

10,0

11,0

12,0

EC motor fan unit PWT heat recovery system

Complete unit

Complete unit

Supply air

Supply air

Extractair

Extractair

Supply air

Extract air

moist-16°C

moist-16°C

dry-16°C

dry-16°C

Flow rate [m³/h] Flow rate [m³/h]

Flow rate [m³/h] Flow rate [m³/h]

Flow rate [m³/h]

PWT

heat

ing

outp

ut**

[kW

]PW

T he

at re

cove

ry in

dex*

* [%

]

Pow

er c

onsu

mpt

ion*

[W]

Avai

labl

e ex

t. pr

essu

re* [

Pa]

Soun

dpres

surele

vel1

mfr

omope

ratin

gside*[d

B(A)

]

* with free air intake and outlet

**Operatingconditions: m1:1

Extractair+22°C40%rF StandardsDINEN308

Outdoorair-16°C Extractair+25°C25%rF Outdoorair+5°C

Performance diagrams (blue corresponds to the recommended range)

acc.toDINEN308

acc.toDINEN308

CGL Air volume 500 m³/h 600 m³/h 800 m³/hSound power level of the suppy / extract air fans

57dB(A) 61dB(A) 66dB(A)

5

Performance diagrams (blue corresponds to the recommended range)

Component performance diagrams

Flow rate [m³/h] Flow rate [m³/h]

Flow rate [m³/h] Flow rate [m³/h]

Supply air

Supply airExtract

airExtractair

Soun

d po

wer

leve

l LW

A*[d

B(A)

]Fi

lter p

ress

ure

drop

[Pa]

FilterF7 Filter F5 Silencer supply air

Silencer exhaust air

Flow rate [m³/h]

Stat

ic p

ress

ure

incr

ease

for t

he fr

ee-b

low

ing

fan ∆p

fa [P

a]

Operating points for the supply / extract fan

n[1/min]

P[W]

I[A]

LWA [dB(A)]

V[m³/h]

1 1570 69 0,51 61 580

2 1970 130 0,91 68 960

1

2

CGL unit curve

SFPv

2SF

Pv1

Spec

. fan

pow

er* [

Ws/

m³]

Sile

ncer

pre

ssur

e dr

op [P

a]

* with free air intake and outlet

SUPPLY / EXTRACT AIR fan diagram

6

If a free condensate drain pipe cannot be used on-site, then the unit can be retrofitted with a condensate pump.ThecondensatepumpisequippedwithafloatswitchwithON/OFFandALARMfunctions.With this pump, the condensate created can be pumped into a more distant or higher level drain pipe.

NoteCondensate drain pipe:

Supply air (SUP)

Exhaust air (EHA)

Outdoor air (ODA)

Filter pre-drying unit (accessory)

Outdoor air sensor

SupplyairfilterF7

Bypassdamperwithvariableservomotor

Countercurrent heat exchanger (HR)

Condensate pan

ExtractairfilterF5

BMLprogrammingunit(accessory)

Supply air sensor

Supply air silencer

Exhaustairsilencer

Extractairfan

Supply air fan

Boosterheaterbank(accessory)

Electriccontrolpanelwith repair switch

Air intake protective grille

Air intake silencer (accessory)

Condensate pump (accessory)

ExtractairsensorCO2 sensor (accessory)

Connection option 230 V on-site flaps/open-close

Height-adjustable feet

Extract air (ETA)Extract air (ETA)

Unit design „supply air lhs“ („supply air rhs“ mirror-inverted)

Pressure differential gaugeFilter monitoring

Pressure differential gaugeFilter monitoring

7

Component description- Compact, inherently stable, height-adjustable casing. Casing frame powder-coated RAL 9006 silver- Duplex design of the casing made from powder-coated sheet steel, commercial white

RAL9016,with50mmthickthermalinsulationsandwichedinbetween.- Optimumsoundandthermalinsulationprovidedbymineralwool,materialclassA1

(non-combustible)acc.toDIN4102.Inspectiondoorsspanningtheentireoperatingheight of the unit provide optimum access to the mounting parts.

Casing

Highly-efficient, single sided inlet, infinitely variable free-running fans directly connected totheECmotorwithlowenergyconsumptionandcontinuouslyvariablespeedcontrol.Complete statically and dynamically balanced motor fan unit.Fan/motor combination with very low noise level.

Motor fan unit for supply and extract air

Heat recovery via high performance countercurrent heat exchanger.Heat exchanger made from high grade, corrosion-resistant aluminium.Very low air resistance.Returnheatquotientsofupto90%acc.toEN308.

Heat recovery system

The unit has a built-in bypass as standard.Summer time night cooling is entirely possible using the bypass.

Bypass

EasilyreplaceablecassettefilterSupplyair:CategoryF7(finedustfilterandpollenfilter)Extractair:CategoryF5(finedustfilter)

Filter

Integrated splitter silencers for supply and exhaust air as standard.Silencer

Complete, fully wired control unit, 230 V / 50 Hz, with isolator in the unit as standard. The microprocessor-operated control unit manages and regulates fans, heat recovery, temperature, volume flow, operating times and a number of internal functions and alarms.

Control unit

8

AccessoriesBML programming module (always required) Upto7CGLventilationunitscanbecontrolledusingasingleBML.(Switchingtimes,temperatures, speed, etc. are adjustable separately for each unit.)

Wall mounting base for programming module

Condensate pumpincluding float switch and alarm contact

CO2-sensor required for CO2 dependent operation

ISM 5 - LON-interface moduletoconnectventilationmodulesLM1andLM2toabuildingmanagementsystemapplyingLON-standard network variables

9

AccessoriesFilter pre-drying unit1000W recommended for an optimized unit operation, plug-in electric heater including overheatsafetycutout(STB)andtemperaturemonitoring(TW)withbracket,toprotectthe outdoor air filter from moisture penetration and to project heat recovery from frost

Electric reheater1000W,modulating,torisethedischargetemperatureincaseoflowoutsidetempera-tures, suitable for progressive re-heating of the supply air temperature, plug-in electric heaterincludingoverheatsafetycutout(STB)andtemperaturemonitoring(TW)withbracket

Tubular end damperDN250, with actuator (230V; open/closed), for connection on site

Tubular silencerDN250,length:600mm,insulationcircumferentially50mm(attenuation6dB/250Hz)

10

Intake silencer toattenuatethenoisebyabout5dBwithadjustablefeet.Reductionofthetotalsoundlevel1minfrontoftheCGLbyupto3dB.Intake: left / right hand side, back

Intake plenum universal with adjustable feet, Intake: left / right hand side, back Ø 250mm, left / right hand side 205 x 408mm, back205x915mm

Discharge plenum vertical with tubular damperswith sound attenuating casing, discharge louvre horizontally and vertically adjustable; tubular damper connection Ø 250mm with actuators 230V open/closed 5Nm.

Discharge plenum verticalwith sound attenuating casing, discharge louvre horizontally and vertically adjustable; terminal box (230V) for subsequent tubular end dampers; tube connection Ø 250mm

Discharge plenum horizontal with sound attenuating casing; discharge louvre horizontally and vertically adjust-able; terminal box (230V) for possible subsequent tubular en dampers; tube connection Ø 250mm

Lifting devicefor a subsequent installation of an intake silencer

Cassette filter F5 particle filter

Cassette filter F7 particle and pollen filter

CGL a b c

372 393 96

CGL a b c

404 592 96

Intake / discharge accessories

11

Design informationAmbient air quality The ambient air quality or quality of the indoor air is determined using the following

threefactors(seealsoDINEN15251orDINEN13779):- Emissions from individuals and their activities

Carbon dioxide emissions from human respiration, biological vapours, smoking, personal care products, etc.

- Ambient emissions Vapours from furniture, carpets, paints, adhesives, etc.

- Outdoor air conditions Rural areas, urban areas, dust, fine dust, pollen, etc.

Design criteria Acc.toDINEN15251various categories are used for the ambient air quality criteria and ventilation rates.

Description of the applications of the different categories

Category Description

1High level of expectation. Recommended for rooms containing very sensitive individuals with particular requirements, e.g. individuals with disabilities, the sick, very young children and older people.

2Normal level of expectation. Recommended for new and renovated buildings.

3Reasonable, moderate level of expectation. Can be used for existing buildings.

4Values outside of the above categories. This category should only be used for a limited part of the year.

As the concentration of carbon dioxide increases, the individual's power of concentration and productive efficiency decreases, fatigue increases and discomfort sets in.CarbondioxideisanaturalcomponentoftheEarth'satmosphereandispresentintheoutdoor air in concentrations from approx. 350 ppm (rural areas) to approx. 500 ppm (urban areas).

12

Design information

Calculation examples: Example 1:

Schoolwith30childrenof6–10yearsoldandoneteacher.

Required air volume per room, in acc. with max. CO2requirement1200ppmCalculation: 30peoplex19m³/h =570m³/h 1teacherx28m³/h =28m³/h

Requiredoutdoorairvolume: =598m³/h

Example 2:

Desired interior category: 3 – Non smoking area20 people

Air volume per room:Calculation: 20peoplex8l/s =160l/s

Requiredoutdoorairvolume: =160l/s=576m³/h

l/s x 3,6 = m³/h

Minimum air volumes per school pupil (based on max. CO2 requirement)

Age-related rate

For approx. age Target value 1200 ppm

Target value 1000 ppm Target group

0 - 6 19m³/h 25 m³/h Kindergarten

6-10 19m³/h 25 m³/h Primary school

10-14 23 m³/h 30 m³/h Secondary school

14-19 24 m³/h 33 m³/h Technical college

Over19 25 m³/h 34 m³/h University

Teacher 28 m³/h 37m³/h

Interior CO2 level acc. to DIN EN 15251 or DIN EN 13779

ThefollowingtablefromDINEN13779indicatestherecommendedminimumvaluesperperson for the outdoor air streams. The design air flow rate also takes into account the emissions from other sources such as materials and furniture.

Category Unit Outdoor air flow rateNon smoking area Smoking area

Normal area Standard value Normal area Standard value1 l/s/person m³/h/person >15 > 54 20 72 > 30 >108 40 144

2 l/s/person m³/h/person 10–15 36 - 54 12,5 45 20 – 30 72-108 25 90

3 l/s/person m³/h/person 6–10 21,6-36 8 28,8 12–30 43,2-108 16 57,6

4 l/s/person m³/h/person < 6 <21,6 5 18 <12 < 43,2 10 36

Notes: If larger air volumes are required, then units from our KG-Compact or KG-Top air handling unit programmes can be used.

13

Interior sound level criteria acc. to DIN EN 15251 or DIN EN 13779

Comparison with intermittent ventilation:

Conventional intermittent ventilationWolf comfort large area ventilation unit

Time (h)

CO2

(ppm

)

Window open

Window closed

Target corridor 1000-1200ppm

Design information

Type of building/room Sound pressure recommended range (dBA)

Open-plan office 35 – 45

Conference room 30 – 40

Classroom, kindergarten 35 – 45

Cafeterias / restaurants 35 – 50

Retail outlets 35 – 50

Minimum clearance between outdoor air inlet and exhaust air opening to prevent an air short circuit (DINEN13779)

≥ 3m ≥

2m ≥2mODA

EHA

SUP SUP

EHA

ODA

≥ 0,25 m ≥ 0,25 m

14

Design informationDepending on the local conditions and visual requirements, the supply air in the room may be distributed by means of a variety of on-site systems.

Suspended ceiling:

• Perforated ceiling• Perforated ceiling with textile outlet

No suspended ceiling:

•Swirloutlet/slottedoutlet•Plasterboardboxwithoutlets•Textileoutlet•Combinationoutlet(airoutlet+light)•Perforatedmetalchannel• Longitudinally folded metal channel / folded spiral-seam tube

Example: Textile outletTop: on suspended ceilingBottom:suspendedinroom(Photo credits: AirQuell GmbH)

Air distribution in the room:

15

Intake plenum universal or intake silencer

Installing the unit in an ancillary room

Design informationFunctional representation of the air input:

Extractair

Supply air

Exhaustair

Exhaustair

Exhaustair

Outdoor air

Outdoor air

Outdoor air

Via channel and false ceilings

Via induction effect, secondary air effect

Supply air

Supply air

Extractair

Extractair

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Titel Dokumentation CGL_Umschlag 09.12.13 13:20 Seite 2

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mod

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The comprehensive equipment range from system supplier Wolf offers the ideal solution for commercial and industrial buildings, for new build and for modernisation projects alike. The range of Wolf control units fulfils every need where heating convenience is concerned. The products are easy to operate, energy-efficient and reliable. Photovoltaic and solar heating systems can be quickly integrated into existing systems. All Wolf products can be easily and rapidly commissioned and maintained.

Wolf GmbH,POBox1380,D-84048Mainburg,Tel.:+498751/74-0,Fax:+498751/74-1600,Internet:www.wolf-heiztechnik.de

The competent brand for energy saving systems

Part no. 48 00 638