AERECO Sizing and installation – Mechanical ventilation · AERECO Sizing and installation – Mechanical ventilation ... AERECO Sizing and installation – Mechanical ventilation

AERECO Sizing and installation – Mechanical ventilation

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SUMMARY

1. Air inlets .............................................................................................................................. 71.1. Choice Of The Products ......................................................................................................... 8

1.2. CHARACTERISTICS............................................................................................................ 8

1.3. AIR INLETs INSTALLATION........................................................................................... 101.3.1. On window frames ........................................................................................................................ 101.3.2. On rolling shutter boxes ................................................................................................................ 131.3.3. On walls ........................................................................................................................................ 13

1.4. AIR INLETS LAYOUT ....................................................................................................... 13

1.5. OUTSIDE CANOPIES......................................................................................................... 14

2. Transit ways ...................................................................................................................... 15

3. Extract Units ..................................................................................................................... 163.1. CHOICE OF THE PRODUCTS ......................................................................................... 16

3.2. characteristics........................................................................................................................ 173.2.1. Aeraulics ....................................................................................................................................... 173.2.2. Acoustic ........................................................................................................................................ 18

3.3. EXTRACT UNITs INSTALLATION................................................................................. 193.3.1. Electric connection of BXL on low voltage network: ................................................................... 213.3.2. Electric connection BXS on low voltage network......................................................................... 30

4. DUCT NETWORK............................................................................................................ 31NETWORK SIZING AND DIMENSIONNING........................................................................... 32

4.1.1. Step by step (details) ..................................................................................................................... 334.1.2. Example of application of the dimensioning method.................................................................... 37

4.2. DUCT NETWORK INSTALLATION ............................................................................... 394.2.1. Rigid ducts .................................................................................................................................... 394.2.2. Connection ducts (complementary regulations) ............................................................................ 414.2.3. Vertical collector duct (complementary regulations) .................................................................... 424.2.4. Horizontal network of collection: complementary specifications ................................................. 464.2.5. Case of the Installations in terrace: protection of the watertight facing ........................................ 47

5. Fan .................................................................................................................................... 525.1. Choice Of The Fan................................................................................................................ 52

5.2. Characteristics Of The Vec Fan .......................................................................................... 52

5.3. Bring Into Operation – General Instructions..................................................................... 535.3.1. General .......................................................................................................................................... 535.3.2. Connecting the horizontal network of collection to the fan .......................................................... 535.3.3. Rejection of the fan ....................................................................................................................... 545.3.4. Alarm in case of failure of the fan................................................................................................. 54

5.4. Bring VEC fan into operation – specific instructions........................................................ 555.4.1. Check list....................................................................................................................................... 555.4.2. Electric connection........................................................................................................................ 555.4.3. Pressure controller......................................................................................................................... 595.4.4. Maintenance of a fan ..................................................................................................................... 605.4.5. Warnings ....................................................................................................................................... 615.4.6. Yearly maintenance....................................................................................................................... 615.4.7. Spare parts..................................................................................................................................... 61

5.5. BRING INTO OPERATION AND TEST .......................................................................... 625.5.1. Check up before bringing into operation....................................................................................... 625.5.2. Settings.......................................................................................................................................... 62


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5.5.3. Controls ......................................................................................................................................... 62

6. Cleaning And Maintenance Of The Products ................................................................. 64


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Goal:

Describe general and specific instructions for installation of centralised mechanical ventilation usingAERECO humidity sensitive process in block of flats.

Use area:

Block of flats, new construction or refurbishment, without gas appliance connected to the ventilationsystem.

Relates to heated dwellings:

- By a heat generating system located out of the livable volume, and whose products of combustionare evacuated independently of the system of ventilation.

- By individual electric heating (radiators and convectors) or by individual gas-fired boilers whoseproducts of combustion are evacuated independently of the system of ventilation.

The medical hot water production is subjected to the same requirements namely that a gas applianceconnected to the system of ventilation must not generate this one. All the other solutions are acceptedand compatible with the system of ventilation mentioned in the present document.

Related countries :

- China- Russia- Poland- Hungary- Lithuania- Romania

This is not an exhaustive list.

Conformity with the regulation :

This leaflet is not a regulation one; it concerns only using recommendations. Some of them aregeneral and the others are particular to the process AERECO. It will be advisable in any event toconform to the requirements lawful into force specially regarding :

- Gas machine- Prevention of fires (fire damper…)

Materials used (led, connection, fixings…) must be in conformity with the standard in force.


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Terminology :

- Upstream: The upstream of an aeraulic component is defined according to usual conventioncompared to the direction of polluted air, from the extract unit to the fan (see figure a).

- Downstream: The downstream of an aeraulic component is defined according to usual conventioncompared to the direction of polluted air, from the extract unit to the fan (see figure a).

- Service rooms: bathroom, toilets, kitchen

- Main rooms: bedroom, living room

- Shaft / T-piece - shaft: Component of the horizontal network of collection allowing to connect thisone to a vertical collector duct.

- Plug: Component located at the base of the vertical collector duct allowing its obturation.

- Hygro: Humidity sensitive or Humidity adjustable.

Bibliography :

- Ventilation Catalogue (Ref CAT 002 AE)- French regulations for mechanical ventilationinstallations :

- XP P 50-410 : Installations de ventilation mécanique contrôlée – Règles deconception et de dimensionnement (DTU 68.1 ) – AFNOR (France)

- NF P 50-411-1 : Exécution des installations de ventilation mécanique (DTU 68.2) –AFNOR (France)

UpstreamDownstream

Figure a


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General principle

Fresh air enters through air inlets located in the main rooms.

The air staled during its passage in the main rooms and service rooms is then evacuated by means ofextract units .

Humidity sensitive extract units enable the distribution of airflow generated by the fan (locatedon the roof or in terrace), according to service rooms and dwellings needs by adapting the flow to theambiant rate humidity. Only the humidity sensitive air inlets are then able to distribute the new airin the main rooms, according to the need for each one.

The rooms or dwellings that have strong requirements in new air have at their disposal a flow moresignificant than the empty rooms or dwellings.

Extract unit

Air inletFan


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Components of the network

1. Air inlets

Each main room has to be equipped with at least one air inlet. Thisprovision aims at respecting the principle of diffusion since main rooms to service rooms.

Their number changes according to the surface of the main room:

N = full part of [(S / 25) + 1]

With:N: numbers of Air inlets in the main roomS: main room surface (m2)

Example:

- if S = 18 m2

then N = full [(18 / 25) + 1] = full [1,72] = 1

⇒ 1 air inlet is requested

- if S = 54 m², then N = full [(54 / 25) + 1] = full [3,16] = 3

⇒ 3 air inlets are requested

Note: In some particular requirements, air inlets can also be installed in service rooms.


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1.1. CHOICE OF THE PRODUCTS

Possible products

Quiet environment Noisy environment Number of products per roomWindow frame /

shutterwall Window frame /

shutterwall

Bedroom See instructions on previouspage

• EMM

• EHA

• EHT

• EAH

• EHA +acousticaccessories

• EHT +acousticaccessories

• EAH +acousticaccessories

Living room See instructions on previouspage

• EMM

• EHA

• EHT

• EAH

• EHA +acousticaccessories

• EHT +acousticaccessories

• EAH +acousticaccessories

The choice will be made according to several requirements such as comfort, acoustic, esthetic,architecture and inhabitant habit.

1.2. CHARACTERISTICS

WINDOW FRAME

TYPE mini flow

maxi flow

maxisurface

Soundproofing –

air inletDn,e,w (C)

Soundproofing -Dn,e,w (C)

withaccessories

*

* : accessories

m3/h m3/h mm² dB dB

EMM 5-35 5 35 4000 33 37 canopy A-EMM

EMM 11-35 11 35 4000 33 37 canopy A-EMM

EMF 22 22 2500 33 37 canopy A-EMM

EMF 35 35 4000 33 37 canopy A-EMM

EHA 5-35 5 35 4000 37 42 canopy A-EHA+ acoustic sleeve E-EHA

EHA 11-35 11 35 4000 37 42 canopy A-EHA+ acoustic sleeve E-EHA

EHA 22-50 22 50 5700 non tested non tested canopy A-EHA

EFA 22 22 2500 37 42 canopy A-EHA+ acoustic sleeve E-EHA

EFA 35 35 4000 37 42 canopy A-EHA+ acoustic sleeve E-EHA

Note : Flows in m3/h under 10Pa, acoustic value data with maximum opening of the shutter.


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WALL AIR INLET

TYPE mini airflow

maxi airflow

maxisurface

soundproofing - Dn,e,w (C)

basic

soundproofing -

Dn,e,w (C)with acoustic

wall kit

accessoriesacoustic wall kit

m3/h m3/h mm² dB dB

EHT 5-40 5 40 400033

EHT + ductØ100mm + EHT canopy

42

EHT +Ø100 Acoustic tube

+EHT canopy

EAH 5-30 5 30 325033

on rolling shutter boxes42

EAH +Acoustic rectangular sleeve +

EAH canopy

Note : Flows in m3/h under 10Pa, acoustic value data with maximum opening of the shutter.


1.3. AIR INLETS INSTALLATION

1.3.1. On window frames

Example of boring on building site 1 with air inlets type EMM:

Sp

1

A

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1.3.1.1. Slots

lots vary according to the type of air inlets to install. The table below "Size of slots" presents theossibilities for air inlets type EMM and EHA

For new buildings, Aereco advises to make the slots in factory, by the window manufacturer. For refurbishment buildings,ereco suggests to dismantle the window to make the slots. Security rules of operating staff must be followed in any case.

Bore a slot in the highpart of the frame as perdimensions indicated inthe table below ("Size ofslots").

Fix the base plate with 2screws (some air inletsare fixed directly, withoutany base plate).

Put the air inlet on itsbase plate.

Fix the canopy outsidethe window with 2screws.

NOTICE: In order to guaranteethe compatibility with windowframe, slots must be done incompliance with windowmanufacturer prescription.In any case, slots must notaffect window’s quality.


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SIZE OF SLOTS

Air inlet type Possibilities for slots (L x l)in mm

EMM(290 x 12)

(270 x 14)

EHA(354 x 12)

(354 x 15)*

* : necessary for EHA 22-50

1.3.1.2. Examples of slots on various types of windows

Example 1 : EMM air inlet and A-EMM AM acoustic outside canopy on PVC window frame

Example 2 : EMM air inlet and A-EMM AM acoustic outside canopy on WOOD window frame


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Example 3 : EMM air inlet and A-EMM AM acoustic outside canopy on ALUMINIUM window frame

on aluminium windows, we advise to ada PVC telescopic window frame sleeve

1.3.2. On rolling shutter

The air inlet has to be installed on the v

1.3.3. On walls

In order to install wall air inlet, please co

1.4. AIR INLETS LAYOU

Air inlets must be installed and fixed as

They have to be installed in the way thadouble-glazing windows etc… cannot seIn such a case, air inlets and constructioin order to know the whole system’s aer

d ref. 11501AL :

boxes

ertical face of the rolling shutte

nsult the EHT installation noti

T

to avoid air draught.

t all construction componentsnsitively reduce airflow cominn components should have baulic and acoustic performanc

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r box.

ce.

such as air holes, shutters,g through ait inlets.een designed and characterizedes.


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Window and veranda

EMM type (or EHA) air inlet can be installed on the window as well as 2 outside canopies “top tobottom” are installed on top of the veranda. The acoustic treatment is then carried out on the window(by an A-EMM AM acoustic canopy for example):

Figure b : treatment in case of window + veranda

1.5. OUTSIDE CANOPIES

The use of outside canopies is compulsory. Indeed canopies avoid water infiltration in window framesor inside dwellings.Performances of Aereco air inlets are guaranteed only with the use of canopies sold by Aereco.

window veranda


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2. Transit ways

They are ensured from the inner doors by means of:

- Transfer grilles- Block-doors presenting air passages on their periphery- Backing off of the inner doors

The dimensioning of the transit way must fulfill the following requirements, in term of maximumpressure loss (PDCM):

- Doors serving service rooms: PDCM < 5 Pa with maximum capacity of the extraction unit- Other doors: PDCM < 2,5 Pa for an airflow corresponding to the maximum openings of the air

inlets of the room.

These requirements are considered satisfied if they are conform to the values of the table (see below):

Inner doors servingbathrooms or kitchens

Transfer grillesMini surface = 50 cm²

(+30 cm² through the

escapes)

Passage of H heigh in top or bottom part (backing off) of thedoor without any change of direction of the airflow

H = 2 cm if 1 doorH = 1 cm if 2 doors

Landing door - note:

The landing door of housing (the one that leads out into the exterior) must be tight. The setting ofperipheral seal and threshold allows obtaining this requirement.


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3. Extract Units

One Extract unit must be installed in each service room.This arrangement aims to respect the air diffusion principle through mainrooms to service rooms.

Extract Units determine the circulating airflow throughout the dwelling, so it is necessary to complywith local regulation (if any) to choose them.

If there is no particular regulation or compliance rules, the choice of Extract Units should be as follows:

3.1. CHOICE OF THE PRODUCTS

EXTRACT UNITS Number of products per

roomAvailable products

Kitchen

Extract unit

X 1

• BXL hi

• BXL hi2

• BXL hc

• BXL hc2

• BXS hi

BathroomExtract unit

X 1• BXL h

• BXS h

Toilets

Extract unit

X 1

• BXL i

• BXS i

• BXS p

Bathroom with toilets

Extract unit

X 1

• BXL hi

• BXL hc

• BXS hi

• BXS hp

The choice of the product will be made according to the requirement of comfort, acoustic, esthetic,architecture and according to the habits of the occupant.


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3.2. CHARACTERISTICS

3.2.1. Aeraulics

TYPEHumiditysensitiveaIrflow

Boost airflow mini airflow maxi airflow Boost airflowHow to start

the boostairflow

‘ + ‘Airflow

m3/h m3/h m3/h

BXL h x - 12 70 - - In series

BXL h2 x - 20 150 - - -

BXL i - x 12 70 switch In series

BXL hi x x 12 70 70 switch In series

BXL hi2 x x 12 70 150 switch -

BXL hc x x 12 70 70 Pull cord2 versions(with ourwithout)

BXL hc2 x x 12 70 150 Pull cord -

BXS hi x x 12 70 70 switch -

BXS hp x x 12 70 70 presence -

BXS i - x 12 70 switch -

BXS p - x 12 70 presence -

BXS h x - 12 70 - - -

BXF - - 15, 30, 45, 60 - - -

Flow in m3/h under 100Pa


3.2.2. Acoustic

Proper noise (acoustic power) Lw in dB(A)

80 Pa 100 Pa 130 Pa

Mini flow (12 m3/h under 100 Pa) 20 22 24

Maxi flow(70 m3/h under 100Pa) 28 31 35BXL

boost flow(150 m3/h under 100 Pa) 35 38 42

BXS mini flow (12 m3/h under 100 Pa) 21 23

BXS h… maxi flow(70 m3/h under 100Pa) 28 32

BXS …p maxi flow(70 m3/h under 100Pa)

Nota : These values are obtained with an adapter Ø

-

26

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23 26 31

125 mm.


3.3. EXTRACT UNITS INSTALLATION

Note: The extraction units must be located at minimum 10 cm from the angles of the wall.

BXL h - BXL h2

Withdraw the grille

Put the referencemarks of fixings(holes for thescrews), the extractunit being on theduct.

Bore the holes Ø
6mm and insert 2ankles adapted forscrews Ø 3,5mm(not provided).
Encase the extractunit in the duct.

Fix the extract unitwith 2 screws Ø 3,5
mm, Length 35 mm(not provided).
Put the grille backon the extract unit.

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BXL i - BXL hi – BXL hi2

Withdraw the grille


Bore the holes Ø 6mmand insert 2 anklesadapted for screws Ø3,5mm (not provided).

Install theswitch(withoutpower supply !)Wire section ≥ 2mm².

Fix the extract unitwith 2 screws Ø 3,5mm, Length 35 mm(not provided).


Connect a 9 Vbattery type 6 LR 61alkalin and put it inthe place located atthe back of theextract unit.


TESTIt is possible to test thebattery by withdrawingthe grille and by makingcontact on the 2 pinslocated on theelectronic board. Thetest must cause adouble “go and return”of the shutter(s).

Connect the dominolocated at the backof the extract unit tothe wires of theinterruptor.


3.3.1. Electric connection of BXL on low voltage network:

(BXL i - BXL hi - BXL hi2)

It is possible to supply the with switch by replacing the VAC low voltage network.

The use of an intermedia(ref.AEA878) is then com

Connect thecomponent (AEA878)to the battery connectorof the extract unit.

extract units working 9V battery by the 12

te component
pulsory.
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Gather the wiresand to surroundthem with adhesivetape, while takingcare not to damagethe componentsand leavingsufficient length forthe wires to beconnected to LowVoltage network.

Place all of themin the batterycompartment.

Connect the 2 wiresto the Low Voltage12 V AC network.


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PRECAUTIONS (for all BXL bracket version):

In bracket version, fix the extract unit by sticking it to the top of the duct, in order to allow the shrinkingof the box by pivot for cleaning:

BXL hc - BXL hc2

Withdraw the grille



Check that noobstacle comes toobstruct thepassage of the pullcord.




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BXS h

Withdraw the grille.

Put the reference marks of fixings(holes for the screws), the extractunit being on the duct.

Bore the holes Ø 6mm and insert2 ankles adapted for screws Ø3,5mm (not provided).

Encase the extract unit in the duct.

act unit with 2 screwsLength 35 mm (not

Choose the adapter according tothe ducts available. The BXS isdelivered with an adapter Ø100mm of series.

Fix the extrØ 3,5 mm, provided).

Pa

Put the grille back on the extractunit.

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BXS i - BXS hi


Put the reference marksof fixings (holes for thescrews), the extract unitbeing on the duct.


Install the switch(without power supply!)Wire section ≥ 2 mm².



Connect a 9 Vbattery type 6 LR 61alcaline and put it inthe place located atthe back of theextract unit.


Connect the dominolocated at the backof the extract unit tothe wire of theswitch.

TESTIt is possible to test thebattery by withdrawingthe grille and by makingcontact on the 2 pinslocated on theelectronic board. Thetest must cause adouble “go and return”of the shutter.

Choose the adapteraccording to the ductsavailable. The BXS isdelivered with an adapterØ100 mm of series.


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3.3.2. Electric connection BXS on low voltage network

(BXS i - BXS hi - BXS p - BXS hp)

Same principles that for the BXL, by placing AEA 878 component in the place planned for the battery.


Put the reference marksof fixings (holes for thescrews), the extract unitbeing on the duct.




Connect a 9 Vbattery type 6 LR 61alkalin and put it inthe place located atthe back of theextract unit.


TESTIt is possible to test thebattery by withdrawingthe grille and by makingcontact on the 2 pinslocated on theelectronic board. Thetest must cause adouble “go and return”of the shutter.

Choose the adapteraccording to the ductsavailable. The BXS isdelivered with anadapter Ø100 mm ofseries.

BXS p - BXS hp

http://www.aereco.com/calcul


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4. DUCT NETWORK

The installation must be dimensioned in order to meet the lawful requirements for flow and acoustic. Inabsence of regulation, it will nevertheless be advisable to comply with the rules defined below in orderto guarantee an optimal quality of air and acoustic.

To answer these constraints, the available pressures at the extract units must lie between a minimalvalue and a maximum value, whatever their openings:

- the minimal threshold of pressure guarantees a sufficient airflow to ensure the air quality inhousing.

- the maximum limit of pressure guarantees an acceptable acoustic level (proper noise of theextract unit).

The dimensioning of the network consists in determining its pressure losses as well as thecharacteristics of the fan.


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4.1. NETWORK SIZING AND DIMENSIONNING

Calculation ofthe Maximum total Flow

Calculation ofThe minimum total flow

Choice of the fan

Calculation of the pressurelosses of the network

Choice of the network :détermination of the

duct sections

Checking by the calculation of therange of pressure available at theextract units.

Are the extract units subjected to apressure range between 65 and 150 Pawith min and max airflow ?

Dimensioning is validated

Modificationof the ductsections

YESNO

Ø

CALCULATION OFPRESSURE LOSSES

1

2

3

4

5

6

7

http://www.aereco.com/calcul


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4.1.1. Step by step (details)

The network and the fan must be dimensioned so that we meet 2 conditions (1 and 2):

1: Calculation of the Maximum total Flow

Dimensioning must be such as the most underprivileged extract unit of the network must besubjected to the minimum pressure of 65 Pa when all the extract units (in all the residencesconnected to the fan) are with their maximum opening. This condition guarantees satisfactory flows inany event everywhere.

With this pressure, the flow in each room to be taken into account for the calculation of the network is:

Flow by room in m3/h

Toilets 30

Bathroom 50

Kitchen 50

For each “h” type of h housing connected to the same fan, it is possible to calculate Q max h by addingthe flows of each room.

i.e. Q max h = (30 x i) + (50 x j) + (50 x k)

when :

h = type of dwellingi = number of toilets in dwellings of h type j = number of bathrooms in dwellings h typek = number of kitchens in dwellings h type

We consider that this flow is that obtained for all the residences in the same standard way (even if thepressure increases by coming up to the fan, the humidity sensitive system automatically decreases theopening of the extract units to balance the flows on the column).

The total maximum flow extracted by the fan is then:

m

Q total max = Σ (Q max h x N h)

Q max h :maximum total flow extracted in each dwelling of h typeN h : number of dwellings of h type connected to the fanm : number of types of dwellings

Reminder : These calculations suppose that each service room is equipped with an extract unit.

h = 1


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2 : Calculation of the Maximum total Flow

Dimensioning must be such as the most privileged extract unit must be subjected to the pressure≤150 Pa when all the extract units are with their minimum opening. This condition guarantees satisfactory level of noise even for the nearest dwelling from the fan subjectto the higher pressure.

With this pressure, the flow to be taken into account in each room for the calculation of the network is:

Flow by room in m3/h

Toilets 15

Bathroom 15

Kitchen 15

For each h type of housing connected to the same fan, it is possible to calculate Q min h by adding theflows of each room.

i.e. Q min h = (15 x i) + (15 x j) + (15 x k)

when :

h = type of dwellingi = number of toilets in dwellings of h type j = number of bathrooms in dwellings h type k = number of kitchens in dwellings h type

We consider that this flow is that obtained for all the residences in the same standard way (even if thepressure increases by coming up to the fan, the humidity sensitive system automatically decreases theopening of the extract units to balance the flows on the column). The total minimum flow extracted bythe fan is then:

m

Q total min = Σ (Q min h x N h)

Q min h : minimum total flow extracted in each dwelling of h type N h : number of dwellings of h type connected to the fanm : number of types of dwellings

Reminder : These calculations suppose that each technical room is equipped with an extract unit.

h = 1


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3 : Choice of the best fan

We choose the fan (see chapter 5) whose range of flows covers calculated Qmin and Qmax as well aspossible as per following board (figure.c):

Airflow in m3/h

We also must check on its characteristic curve(see figure d) that the pressure of the fan at theflows Q total min and Q total max is such as eachextract unit can be subjected to a pressure2

between 65 Pa and 150 Pa. Moreover the fanmust indeed provide the pressure necessary toovercome the pressure losses of the network tothese flows. These pressure losses arevariable: strong with raised flow, weak with lowflow.

Figure d : choice of the fan – analysis of its characteristic curve

Note : PL is for Pressure Losses

2 only for ducts whom dimensioning is adapted

Figure c :operating rangesof AERECOVEC fans

IMPORTANT:

Only AERECO fans (VEC range) guarantee theoptimal operation of the humidity sensitive ventilationcomponents. Indeed their characteristics (flat curve)make it possible to really modulate the flows whenthe opening of the extract unit shutters differs. Foran installation of other fans than those mentioned inthis document, please contact us.


Pa

Once we checked that the selected fan was appropriate, we dimension the network of the duct.

4: Choice of the network

We choose a network (sections) according to our experience.

Note : please check that the speed of the air with maximum flows does not exceed 5 m/s.

5: Calculation of the pressure losses

Pressure losses of the network are calculated according to usual rules of calculation.

A software of assistance of calculation is available on Internet web site www.aereco.com at thefollowing address www.aereco.com/calcul

6: Checking of the available pressure

We have to make sure that the following assumptions are checked:

- the most underprivileged extract unit must be subjected to a pressure ≥ 65 Pa when all thunits are with their maximum opening (with Q = Q total max).

- the most privileged extract unit must be subjected to the pressure ≤150 Pa when all the eunits are with their minimum opening. (with Q = Q total min).

If not, it is necessary to modify the sections of the ducts and to recalculate.

7: Reiteration of steps 4 to 6

We stop when the 2 assumptions of step 6 are checked.

Note: In certain particular cases (great height building or windy zones), it may be necessary tinto account the effects of stack effect and wind pressures in calculations of extreme values opressure at the extract units.

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e extract

xtract

o takef the


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4.1.2. Example of application of the dimensioning method

Considering a building using only one centralized fan, including the following dwellings:

Number of service rooms per typeType ofdwelling

h

Number of dwellings ofsuch a type

Nh ToiletI

Bathroomj

Kitchen k

1 6 0 1 12 4 1 1 13 4 1 2 14 2 2 2 2

1 : Calculation of the maximum total flow :

Q max 1 = (30 x 0) + (50 x 1) + (50 x 1) = 100Q max 2 = (30 x 1) + (50 x 1) + (50 x 1) = 130Q max 3 = (30 x 1) + (50 x 2) + (50 x 1) = 180Q max 4 = (30 x 2) + (50 x 2) + (50 x 2) = 260

Q total max = Σ (Q max h x N h) = (100 x 6) + (130 x 4) + (180 x 4) + (260 x 2)

= 2360 m3/h

2 : Calculation of the minimum total flow :

Q min 1 = (15 x 0) + (15 x 1) + (15 x 1) = 30Q min 2 = (15 x 1) + (15 x 1) + (15 x 1) = 45Q min 1 = (15 x 1) + (15 x 2) + (15 x 1) = 60Q min 1 = (15 x 2) + (15 x 2) + (15 x 2) = 90

Q total min = Σ (Q min h x N h) = (30 x 6) + (45 x 4) + (60 x 4) + (90 x 2)

= 780 m3/h 3 : Choice of the fan :

For these characteristics, it seems that it is the VEC 321 H that is the best appropriated.

We must choose an adjustment of pulley (figure e) in order to obtain the following curve; Then wededuct the points of extreme operation (integration of the pressure losses of the network in forecast):

h = 1

4

h = 1

4


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The point given by Q total min is located above the fan curve (adjustment of the pulley) imposed by thefirst point Q total max ; it results from it that the point of real operation will be brought back "to thevertical" below the calculated point, which will give a pressure to the extract unit lower than 150 Pa when Q total min.

4 : Choice of the network :

We choose the network (lengths, diameters, angles…) as per the geometry of the building and thepressure provided by the fan, according to habits.

5 : Calculation of the pressure losses of the network :

We use the rules known to calculate the pressure losses of the network. A software of assistance isavailable on Internet web site to the following address www.aereco.com/calcul

6 : Checking of the available pressure

Please make sure that the following assumptions are checked:

- the most underprivileged extract unit must be subjected to a pressure ≥ 65 Pa when all the extractunits are with their maximum opening (with Q = Q total max).

- the most privileged extract unit must be subjected to a pressure ≤150 Pa when all the extract unitsare with their minimum opening. (with Q = Q total min).

If not, it is necessary to modify the sections of the ducts and to recalculate.

. 7: Reiteration of stages 4 to 6

We stop when the 2 assumptions of stage 6 are checked.

Figure e: choiceof the VEC fanand adjustment ofthe pulley


Page 39 / 66

4.2. DUCT NETWORK INSTALLATION

The collecting network starts with the extract units and ends at the outlet of free air, downstream fromthe fan. In collective installations, it is made up (see figure f):

- connection ducts (1) - one or several vertical ducts (2)- horizontal ducts of collection (3)- one fan (4)

The connection ducts are carried out of rigid or flexible duct. The other ducts are made out of rigidtube.

4.2.1. Rigid ducts

4.2.1.1. Materials

The rigid ducts are carried out in one of the following materials:

- Aluminium- Stainless steel- Galvanized steel

Figure f: Sitesanddenominations ofthe componentsof the network ofextraction


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4.2.1.2. Diameters and thicknesses

The minimal thicknesses to remind are as follows:

- Aluminium: thickness 0,6 mm for Ø between 125 and 315 mm thickness 0,8 mm for Ø higher than 315 mm

- Stainless steel: Conform yourself to the standard in force- Galvanized Steel: Conform yourself to the standard in force

These ducts are available in the AERECO accesories catalogue.

4.2.1.3. Application

Angles and parts of junction:

The angles and parts of junction concerned must not present any changes of direction of the flowhigher than approximately 90°. (Figure g)

This aims to limit the aeraulic pressure losses. The most frequently used angles are the 90° anglesand the 135° angles corresponding to a change of direction of 45°.

Figure g:authorizedchanges ofdirections of theducts


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4.2.1.4. Airtightness

The airtightness must be compatible with the working of the installation. It depends in particularon the conditions of fitment and sealing of the ducts.

Etancheity materials:

The materials used to ensure the airtightness of the ducts and equipment must fulfill the followingrequirements:- Resistance to the atmospheric agents for the materials which are concerned- Resistance to ageing (UV…)

These requirements are satisfied if we use materials such as adhesive bands, heat-retractable bands,silicone cement, adhesive, seal of rings with lip or other rings of etancheity, of which it is explicitlyspecified by the manufacturer that they can be used for the realisation, according to cases, of aninstallation with MECHANICAL VENTILATION.

The connection of 2 rigid ducts is made through theuse of an intermediary part i.e. male-male sleeve, byplacing a silicone cement on the periphery of thesleeve for the etancheity then by fixing the ducts tobe connected with peripheral rivets:

4.2.1.5. Noise attenuators devices

If attenuators of noise devices are used, the materials (rockwool...) they are made up must bemaintained in a durable way, for example by a suitable netting.

This aims at preventing a possible obstruction of the duct by insufficiently maintained materials. In order to allow the control of their maintenance, these devices can be operative only in easilyaccessible parts (shafts...). The installation of these devices must not generate any decrease of flows of the extract units. The useof a humidity absorbent attenuator of noise material is not allowed when it is located against agalvanized steel wall.

Warning: These materials can be the centre of condensations prejudicial to the durability of thenetwork.

4.2.2. Connection ducts (complementary regulations)

4.2.2.1. Materials

We use either rigid ducts, or flexible ones. Characteristics of the flexible ducts are as follows:- Flexible ducts which donnot serve any connected gas appliance3: minimum thickness 0,12 mm

aluminium or stainless 0,1 mm stainless steel.

3 Case of the present document

Rivets

Siliconecement

male-malesleeve


4.2.2.2. Connection

Only one duct is able to serve several extract units.The installation must allow the checking of the vacuity of the duct. If flexible ducts are used, these ducts must not show any flatness that could appreciably reduce theextracted flows.

It is admitted, if the circumstances require it, a maximum flatness of 2 cm.

The extract unit is connected to the connection duct through a sleeve sealed in the wall. A collarensures the solidarity of the duct - sleeve connection. (Figure h)

4.2.2.3. Airtightness

The number of fitments must be reduced to the minimum level comof the ducts.

4.2.3. Vertical collector duct (complementary

The vertical collector duct starts with the downstream of the conneupstream of the shaft located in terrace or roof. (Figure i) It consists of whole or part of the following elements:

- Rectilinear ducts, (a)- Floors collectors.(b)- Plug at the base of the duct.(c)

Figure h:connection of theextract unit to theduct ofconnection

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patible with the commercial lengths

regulations)

ction duct and ends with the


4.2.3.1. Layout and device of visit

a) drawing

The duct can comprise c erting in the crossing of thebuilding.

In the case of some archplaced in horizontal positmore vertical collector du

b) device of visit

An accessible device of vmust be arranged in the

The access to this deviceprivative parts of the con

It can also be envisaged order to facilitate the ope

Figure i:components ofthe verticalcollector duct

hanges of section or horizontal or oblique div

Page 43 / 66

itectures (pyramidal building…), the usually vertical collector ducts can beion in false ceiling of circulations of each level to be connected to one orcts located in central or peripheral part of the building.

isit allowing the access to the plug and the possible cleaning of the siphonwall of the shaft containing the vertical collector duct.

is carried out either since the common parts, or, if not possible, since thestruction.

to prescribe the installation of a device of visit infront of each extract unit inrations of inspection of the connection duct.


4.2.3.2. Protection shaft

The duct is usually placed inside the buildings.

It can nevertheless occur, for architectural reasons, that this duct is located in whole or part out of thebuilding. This possibility must be explicitly written in the technical specifications of the project. Thecompletion of the works is then subject of a special study.

It must then be separated from the rooms crossed by a shaft.

This shaft ensures the mechanical protection of the duct and can contribute to its phonic insulation orto the satisfaction of the lawful requirements as regards fire.

Only one shaft can contain several ducts. The VAM ducts must not be placed in contact with otherducts. The crossing of non made-up roofs can be carried out without shaft.

The requirements as regards firebreak degree of the unit consisting of the duct and its possibleenvelope are defined as per the regulation in force.

4.2.3.3. Devices for visit

The duct must comprise devices (dismountable plugs...) allowing, even in the event of diverting, thevisit of each straight section for the checking of their vacuity. The base of the vertical duct must consistin a dismountable plug.

4.2.3.4.

If the duct is sucepequipped of one co

The water condensof wastewater can of the duct and the

Note: the PVC tube

4.2.3.5.

The provisions retaharming the integri

4.2.3.6.

Except architecturathickness of the flo

It may have architerelating to the pyra

Evacuation of the condensed water

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tible to be traversed by condensates, the plug consisting the base of the duct isndensed water evacuation.

ed at the base of the vertical duct is rejected by a specific evacuation. The networkbe used for this purpose. In this case, the parts and pipes used between the base network of wastewater are out of materials resisting to condensated water.

can be appropriate for this use.

Fixing

ined for the maintenance of the duct must allow ensuring a perennial fixing withoutty of the duct.

Floors crossing

l constraint, the connections of elements of ducts are carried out apart from theor.

ctural obligation when the duct comprises divertings (see for example the figure jmidal buildings).


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Figure j: Floor crossing: allowed position in case of diverting

The stopping of the hopper is carried out in full thickness. It is however admitted, when the duct isinstalled after realization of the hopper in a reservation whose diameter does not exceed 2 cm morethan the diameter of the duct, to carry out only a partial stopping; this stopping is carried out on all theperiphery, for example by means of mortar or of a cement cord.

This aims to make possible the respect of the requirement relating to the acoustic insulationbetweendwellings.

The floor crossing is carried out by respecting the integrity of the duct.

A solution consists in setting up around the ducts a low thickness resilient material, for examplepoIymeric alveolar material, intended to ensure the complete desoIidarisation between the duct andthe other main elements of the building (figure k). This resilient material is laid out in order toappreciably exceed naked flagstone or crossed wall.

Figure e : Example of floor crossing


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4.2.4. Horizontal network of collection: complementary specifications

The horizontal network connects the higher part of the vertical ducts to the fan. It is in particular madeup of whole or part of the following elements: - shafts (t-piece or box), see figure l,- horizontal ducts,- parts of junction,- angles, elbows- if necessary, duct of exhaust placed downstream from the fan.It is generally located in flat roof, roofs or (case of the reversed MECHANICAL VENTILATION) in lowpart of the building (ground floor, basement or space underfloor).

Please remind that the layout of the horizontal network must, in order to allow a maintenance undernormal conditions, be in conformity with the regulation in force, in particular with regard to the positioncompared to the obstacles or emergences

Figure l: t-piece-shaft

4.2.4.1. Accessibility of the horizontal network

The fan, the t-piece-shaft and, if any, the points of purging and components of adjustment must beeasily accessible from the common parts.

This regulation must be taken into account since the design.

The necessary (for example a " fireman box " containing the keys of the scale and the trap door ofaccess) must be made to give effective access.

When the access to certain parts of the building can be done conveniently only by spanning the ducts,with the risk to deteriorate them, ducts crossings (footbridges...) must be envisaged.

4.2.4.2. Shaft (t-piece or box)

a) Choice of the shaft: the shafts are equipped with a lid allowing their visit. b) Setting : The setting of the shafts must allow periodic visits and cleaning of the ducts.

This specification aims in particular the mode of realization of air tightness.


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4.2.4.3. Components for flow balancing

If other processes of ventilation need components of flow balancing, such is not the case for theAERECO humidity sensitive process of ventilation. Indeed, from their characteristics (flat curves), theproposed fans do not need such components.

4.2.4.4. Slope of the ducts

The horizontal network must present one or several slopes in order that the condensates cannot runout in the shaft.

4.2.4.5. Changes of section

The changes of section are carried out by use of concentric or eccentric reductions. The reductionsare normally made in order to present no low point. It is however allowed, in the event of realarchitectural disadvantage (for example big length network), to use reductions presenting, oncerealized, a low point. These reductions must be equipped with drainage of water.

The realization of watertightness between the aeraulic duct and the drainage of water must be thesubject of a particular care.

4.2.5. Case of the Installations in terrace: protection of the watertightfacing

4.2.5.1. T-pieces - shafts

a) components and setting

The collector duct emerges in roof in a rigid metal sleeve: in order to allow the realization of thestatement of sealing, this sleeve exceeds masonry (figure m) of at least 10 cm.

Once fitted, the t-piece-shaft must ensure the protection of the statement of sealing by a covering of4 cm height:


Page 48 / 66

The respect of this specification is ensured by the use of a t-piece-shaft placed on the sleeve, and ofpartly lower adapted form.

The setting of the t-piece-shaft must not be opposed to the realization of the water protection on thesleeve.

The respect of this specification is normally ensured with one of the following ways:- either the difference of ray between the thrust of the t-piece-shaft and the sleeve is higher than 4

cm, which generally requires the use of a sleeve of diameter closed to that of the vertical duct;

- or the final fixing of the t-piece-shaft on the vertical duct is effected only after the realization of thewater protection.

b) Masonry works

The sleeve is sealed in a masonry work interdependent with the carrying element. If the emergentwork includes drains (wastewater ventilation), those are established by respecting a minimal distanceof 10 cm between each element (figure m).

Figure m:T-piece-shaftin terracesetting

Metalicsleeve

Aboveinclinedsolid mass(waterprotection)

Weather-block up

Dimensions in cm

Above view


Page 49 / 66

4.2.5.2. Free height above the watertight facing

The collector is laid out so that its lower generator is distant at least 30 cm (figure m) from thewatertight facing.

4.2.5.3. Collectors supports

The supports of collectors are fixed (figure n) on the watertight facing through the intermediary of aplane and rigid element. This element, of a surface upper than 900 cm² and of a width higher than20 cm, is laid out on a material of dissociation (minimum thickness 3 cm panel out of cork, polystyreneof density higher than 25 kg/m3, minimum thickness 2 mm rubber or equivalent material).

The allowed pressures on the watertight facing depend on the nature of the support of watertightfacing.

This regulation is respected, whatever the type of support, if the pressure exerted on the level of thewatertight facings is not higher than 0,04 daN/cm².

4.2.5.4. Fan

The connection of the fan with the roof must allow the maintenance and the repair of the works ofsealing.

This is ensured by one of the two following ways:

a) either by interposition (figure o) of a material of dissociation in conformity, with regard to the natureof material and the allowed pressure, with the regulations of this documents (§ "Supports ofcollectors")

Figure n: Collectors supports in terrace

Horizontalcollector

Possible heavyprotection

Resistant andrigid planeelement

Material ofdissociation

Coating ofetancheity

Heat insulator

Vapor-proof


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b) or by posing the fan on an emergent solid mass in masonry, (figure p) interdependent with thecarrying element. This solid mass must be in conformity, with regard to the reliefs intended to receivewatertight facing to the regulation in force.

Figure o: Setting of the fan on terrace (solution a)

Figure p: Setting of the fan on terrace (solution b)

h ≥ 0,15 m under the heavy protection if there is oneh ≥ 0,15 m under the self-protected etancheity


Resistant andrigid plane

l t

Material ofdissociation


Heat insulator

Avoid - vapor

fan


Solid mass inmasonry


Heat insulator

Avoid – vapor

fanflap


Page 51 / 66

The fan then ensures the sealing above the emergent solid mass.

The solution b is normally adopted when the fan is too heavy to be able to be fixed without using alifting gear.

4.2.5.5. Technical zones

The zones subjected to an activity of cleaning and/or maintenance of the mechanical ventilationinstallation are considered as technical zones. They may have the form of localised surfaces or ofaccess paths.

For these zones, the coating of circulation must be in conformity with the provisions specified by theregulation.


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5. Fan

5.1. CHOICE OF THE FAN

Possible products*

Number of fans Place available in the roofs or interrace place available only into the dwelling

Collective fan1 for N dwellings

Or

1 individual fanper dwelling

• VEC 240H

• VEC 271H

• VEC 321H

• VEC 382H

• VAM (1 per dwelling)

* The pressure/airflow couple calculated at stages 1 and 2 of the § 4.1.1 conditions the choice of thefan.

5.2. CHARACTERISTICS OF THE VEC FAN


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5.3. BRING INTO OPERATION – GENERAL INSTRUCTIONS

5.3.1. General

5.3.1.1. Site

We remind you that the position of the fans is selected in order to allow the realization of theoperations of maintenance.

5.3.1.2. Power supply

Electric connections of the fan must be located safe from moisture in a tight case.

The IP degree of protection necessary for the electric cases is defined in the standard in force.

The power supply is carried out in accordance with the standard in force.

A circuit breaker must be installed closed to the fan.

5.3.1.3. Driving belt

A driving belt of assistance must be provided with each fan and be laid out near this one when thedrive of the wheel is done by belt. The engine of assistance, if any, is laid out safe from moisture.

5.3.1.4. Acoustic requirements

The fan is generally laid out on a heavy wall. If the engine is not fixed at the box via antivibratory materials, it is necessary to interpose, between thebox and the support floor, an elastic material (studs or carpet) whose fall under the effect of the properweight of the box is at least 5 mm.

The fan, if it is located in roofs and if it cannot be laid out on a heavy wall, must be suspended on theframe by ropes. It is then advisable to use flexible sleeves of connection (cf § 5.3.2).

5.3.2. Connecting the horizontal network of collection to the fan

The use of flexible sleeves of connection is recommended to avoid any transmission of solid-statenoise:

- so the ducts connected are coaxial;

- the supports of the ducts are such as those do not exert any efforts on the sleeve;

- air tightness is assured, as for the other methods of connection.

The flexible sleeves are subjects of a routine checking. This checking does not concern the market ofinstallation.

The use of rigid sleeves is not allowed if the fan is laid out on antivibratory studs.


5.3.3. Rejection of the fan

The realization of the crossing of the roof is not aimed by this document.

5.3.3.1. Site

In the case of buildings surmounted by a terrace, the rejection of the air is carried out on the terrace,either directly, or by a duct of exhaust.

The rejection, in the roofs, of the extracted air is not allowed.

This provision aims at avoiding the reintroduction of the foul air in the buildings and condensationsunder the roof.

5.3.3.2. Protection of the outlet

The outlet of the duct, when the fan is located in roofs, must be equipped with a protection to avoid thepenetration of rainwater. The bypass section of the air should not be reduced.

This protection is not requested if the duct of exhaust (or the fan) is equipped in low part with anevacuation pipe of rainwater carried out in accordance with the provisions of the § “Evacuation point -case of the networks in roofs ".

5.3.4. Alarm in case of failure of the fan

5.3.4.1. General prescriptions

The installations must be equipped with a warning system functioninof the fan.

This alarm must be:

- either transmitted in a function room,

- or visible and luminous; it is then laid out on each stage or in eac

- or sound: it is then laid out either in high part of each stair-well, ofrontage, this last localization being allowed only in the absence buildings with service road by gangway and external staircase); tbe adapted to the environment.

The level of sound power can be selected from 80 dB (A). The alarmintervention of the services of maintenance.

5.3.4.2. System of detection of defect

It is advisable to use a control of the type pressure-controller or tachorotation of the wheel, or any other control having a comparable level

Page 54 / 66

g automatically in case of failure

h housing,

r in each hall, or in externalof interior stair-well (case ofhe power of the aural signal must

has the aim of starting the

metric with direct detection of theof reliability.


Page 55 / 66

5.3.4.3. Case where the same housing is served by several extractors

When several extractors evacuate the foul air of the same housing, these motors must be broughtunder control in order to stop automatically as soon as one of them does not function any more.

5.4. BRING VEC FAN INTO OPERATION – SPECIFIC INSTRUCTIONS

5.4.1. Check list

1. To avoid the vibrations, we advise:

- an antivibratory base,- flexible sleeves for aspiration and exhaust.

2. To handle the box fan, we advise:

- to use gloves to avoid any wounds in contact with sheet steels constituting the box,- to use the legs of lifting envisaged for this purpose for the grutage of the fan box,- to use adequate hoisting and handling equipment, in order not to endanger the staff, or to damage

the products.

3. When the box fan is delivered with a sleeve + grille + lid, the accessories will have to be installedbefore the startup.

4. The fan box will have to be connected to its aeraulic network before the startup.

The installation must be carried out so that the contact with the parts moving is impossible.

Qualified staff must carry out the installation.

Please envisage an open space at least equal to the width or the height of the box (according to thetype) side face intended to facilitate the access for the maintenance of the pieces located inside thebox.

5. Please check before the startup that no parasitize object is in the box or in the fan to prevent thisobject to be ejected under the effect of the pressure or makes the wheel of the fan stops.

5.4.2. Electric connection

1. The supply voltage is of 230 V or 400 V three-phase current according to the model.

Foot-note: Unless otherwise specified with the order, the three-phase fans are delivered to beconnected in 400 V three-phase current

2. In the case of a change of the supply voltage after order, it will be necessary to adapt the value ofthe electric protection (fusible, circuit breaker...) to this new voltage.

3. The electric connection will be done according to the rules of standard NF C 15-100, or to the localstadard in force.

Foot-note: Please envisage the maintenance of the electric cable of the fan the more close possibleof this one by collar or any other accessory.


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SIGNIFICANT: Do not forget to connect the ground:

- on the bar comprising the symbol in the case of a switch,- on the ground terminal in the case of a connection on DlN rail or on bar of connection.

4. For the diagrams of electric connection, please refer to the diagrams represented below.

5. In the event of rotation in the other way (three-phase supply), please reverse the 2 phases ofsupply to obtain the good direction of rotation (figure q).

Figure q: good direction of rotation of the turbine

5.4.2.1. Diagrams of electric connection

- VEC 1 speed (with switch) :

Connection of the ground on the bar mentioning the symbol , on the right of the switch.


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- VEC 2 speeds (without switch) :

- Single-phase VEC fan (with switch) :

Some VEC fans are delivered with specific engines and a wiring to function in single-phase current.

Connection of the ground on the bar mentioning the symbol , on the right of the switch.


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The internal wiring diagram is as follows:

1 Condenser :1 x 30 µFfor VEC 240 H and VEC 271 H


Page 59 / 66

5.4.3. Pressure controller

5.4.3.1. Connection pressure controller

: Relay that can control contacts to cut off the supply of the boilers in the event of fan failure.

Breaking capacity of the pressure controller under 250 V: - resistive: 5 A maximum, - inductive: 3 A maximum.

5.4.3.2. Adjustment of the pressure controller

In the case of an adjustable pressure controller:

- Regulate on 0,5 for VEC fan of:- Type A- Types AB.AC of speed A.

- Regulate on 0,8 for VEC fan of :- Types AB.AC of speed B or C - Types B and C

Pressurecontroller


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5.4.4. Maintenance of a fan

IMPORTANT

PLEASE CUT THE POWER SUPPLY BEFORE ANY INTERVENTION ON FANS AND MAKE SURETHAT IT CANNOT BE ACCIDENTALLY CONNECTED DURING THE INTERVENTION.PLEASE DO NOT OPERATE AS LONG AS THE FAN IS NOT COMPLETELY SWITCHED OFF.

1 : Speed regulation of a fan equipped with pulleys and belts (figure i) :

When leaving the factory, the fan is regulated in average position of its operating range.

2: In the case of modification of speed of fans or change of belt, please check the tension of the beltbefore the re-starting:

2 screws 6hollow sides

Figure r : regulation of the speed for each operation on pulley

Belt voltage: arrow (A)= 15 mm under 5 kg.


Page 61 / 66

3: In the case of change of pulley or engine, please check the good alignment of the pulleys and thetension of the belt before the startup:

5.4.5. Warnings

- do not use the fan when the box is open.- do not try to pass a tool through the grille of exhaust when the fan is working.- The box of the fan is not designed to extract air containing chlorine vapor.- The box of the fan is not designed to extract air containing explosive vapor and must not be used

in explosive atmosphere or must not be connected to chimneys.- The box of the fan is not designed to make smoke clearing.

To use this fan for extraction of air containing particular vapor, please do not hesitate to consult us.

5.4.6. Yearly maintenance

- Please check the state of wear of the belt and its good tension.- Please vacuum-clean the paddles of the fan as well as the parts located in the box, as often as

necessary and at least once per annum, in order to avoid any unbalance or wear of the bearings.- do not use any system with high pressure or vapor for the cleaning of the fan and the engine.- please check the good fixing of the engine and the pulleys.- Please check the good state of the elastic supports.- Please control the presence of abnormal noises.

5.4.7. Spare parts

In the event of orders of spare parts, please raise the exact references of the fans in box on the makerbadge.


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5.5. BRING INTO OPERATION AND TEST

5.5.1. Check up before bringing into operation

Please make sure, before the startup, of the conformity to the design and dimensioning studies of thefollowing elements:

- air inlet (site, number of dwellings, nature) and transit airflow- extract units- points of condensed drainage, if necessary.

If valves or flame guard shutters are envisaged with the downstream of the extract units, please checkthat those are not accidentally closed.

5.5.2. Settings

The installation is regulated to obtain the flow at the various extract units in the observance of theregulations relating to ventilation and soundproofing.

5.5.2.1. Extractor

Please ensure, in any cases, of the good direction of rotation of the wheel.

If an extractor at adjustable revolutions is used, please adjust this speed to the value specified duringthe studies of dimensioning.

We remind you that the respect of the lawful requirements as regards acoustic comfort may not beensured anymore in case of too speed revolutions.

5.5.2.2. Extract units

AERECO extract units are preset in factory and directly adapted to the specific climatic zones.

No additional adjustment is necessary.

5.5.3. Controls

5.5.3.1. Pressure control upstream from the fan

As all the extract units are with their maximum opening, please check that the obtained pressure onthe duct at immediate upstream from the fan, and this, if possible, with at least six diameters from thefan or from any mishap, differs from less than 15 Pa from the specified pressure of the studies ofdimensioning.

If not, it is possible with an extractor with adjustable revolutions of speed, to adjust this speed in orderto bring back the pressure to the wished value.

We remind you that the addition, in order to bring back the pressure to the wished value, ofparts of output control other than those specified during the dimensioning and designengineering studies, is not allowed.


Page 63 / 66

5.5.3.2. Control of the flows and pressures of the extract units

When all the extract units are with their maximum opening, we must check that the flow extracted fromthe most underpriviledged extract unit(s) remains, with a tolerance of measurement, in the range offlow specified during the design and dimensioning engineering studies. Moreover, when the extractunits are with their minimum opening, we must check that the flow extracted from the most priviledgedextract unit(s) remains, with a tolerance of measurement, in the range of flow specified during thedesign and the dimensioning engineering studies.

We must check, moreover, that the pressure with the downstream of the most priviledged extract unitdeviates from less than 15 Pa from the pressure specified during the studies of dimensioning.

The checks can take place either directly by the measurement of the extracted flow (it is thennecessary to make sure that the presence of the measuring apparatus does not modify to a significantdegree this flow), or in an indirect way by measurement of the pressure downstream from the extractunit. If the extract unit on which we take measurements is manageable by the final user, it isnecessary to repeat these measurements for each of its working positions.

More details on § relative to calculations.


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6. Cleaning And Maintenance Of The Products

Means occurrence

Air inlets - Vaccuum-clean the air inlet with a dry rag 1 time per year

Canopies - Withdraw the insect grille.- Wash with soapy water 1 time per year

mechanical ventilationextract units

- Withdraw the grille and the shutter support - Wash these pieces (soapy water or

dishwasher) Kitchen : 2 times per yearBathrooms and toilets : 1time per year

Fans- Check the cleanliness of the turbine- If needed, clean with a brush 1 time per year

Note: A maintenance notice is enclosed to each product. For more details on maintenance and cleaning, please refer to the chapters concerning thecomponents of the systems.


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AERECO9 allée du clos des charmes

CollégienF-77615 Marne la Vallée cedex 3

FRANCE

tel +33 1 60 06 26 63fax +33 1 60 06 22 11

www. aereco.com

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