FläktGroup STEF-ATEX & STEF-HT Installation and Maintenance Manual

Brand: FläktGroup

Model: STEF-ATEX & STEF-HT

Type: Installation and Maintenance Manual

INSTRUCTIONS FOR INSTALLATION AND MAINTENANCE

STEF-ATEX&HT ROOF FAN

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FläktGroup DC_10420GB 2022-10-04_R3

3 TECHNICAL DESCRIPTION

The fan is used to produce a required air volume at a speciﬁc pressure

that corresponds to the pressure losses of the duct system connect-

ed to the fan. This is achieved with a rotating impeller. The fan unit is

hinged onto the bottom plate so it can be tilted open for cleaning.

3.1 APPLICATIONS

Roof fans are designed to be used for the extraction of exhaust air. Do

not run the fan at a higher rotational speed than that speciﬁed in the

technical manual.

3.2 MOTORS

Below is a list of the motor types used in our different fans.

1 IMPORTANT INFORMATION

FläktGroup fans comply with the requirements for health and safety of

the EC Machinery Directive.

All fans leave the factory after being subjected to testing.

These instructions are intended for use by professional service staff.

The installation, commissioning and operation of the fans must be

carried out by professional staff who are familiar with the safety

regulations. Tools and protective equipment necessary for preventing

accidents from occurring while installing and operating the fan must

be used/worn in accordance with the local safety regulations.

All personnel involved with the product must carefully study this oper-

ating manual and diligently comply with all orders and instructions.

FläktGroup does not accept responsibility for any damage that can

be attributed to non-observance of these instructions. The warranty

issued by the manufacturer will be forfeited if any changes to the prod-

uct are made without the manufacturer’s consent.

2 SAFETY

This symbol is designed to highlight all safety

and danger related information relating to

danger to the life and health of operators.

Fan Motor construction Type

STEF-ATEX IEC 3~400VAC

STEF-HT IEC 3~400VAC

When using a frequency converter, the minimum control frequency is 20 Hz.

For STEF-ATEX, the permissible exhaust air temperature range is

-10…+40 °C.

For STEF-HT, the permissible exhaust air temperature range is -10…+40 °C (if

the fan is used for normal ventilation).

CONTENTS PAGE

1 Important information..............................................................................................2

2 Safety ............................................................................................................................2

3 Technical description .............................................................................................2

4 Transportation and storage ..................................................................................3

5 Installation ...................................................................................................................3

6 Commissioning .........................................................................................................8

7 Maintenance ...............................................................................................................8

8 Airﬂow measurement (STEF-HT) .......................................................................9

9 Product code ............................................................................................................10

10 Manufacturer’s declarations ............................................................................ 11

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4 TRANSPORTATION AND STORAGE

4.1 DELIVERY INSPECTION

Immediately upon receiving the fan, inspect it for damage that may

have occurred during transport. If you detect any damage caused in

transport, please contact the company responsible for transportation

without delay.

Check the fan speciﬁcations on the rating plate.

Proper procedures must be followed when transporting the product.

Inappropriate conditions may seriously damage the product.

4.2 TRANSPORT SAFETY

Transport equipment should be selected based on the package and

product weight. Loading must be performed according to instructions.

4.3 INTERMEDIATE STORAGE

If the fan is stored before use or between use, please take note of the

following:

- The original packaging should be used when storing the product;

additional protection may be used.

- The storage environment should be dry and dust free, and the

humidity must not exceed 70%.

- The storage temperature should be between -25 °C and +60 °C.

The appropriate instructions should be reviewed thoroughly before

commissioning.

4.4 LIFTING THE FAN

Ensure that a safe lifting method is used. The fans’ masses are listed

in section 5.3 (Installation of roof fan) and on the fan’s machine label.

5 INSTALLATION

The fan should be installed on the BOGA roof curb or on a chimney

built on site using a mounting frame.

5.1 SAFETY REGULATIONS

The fan meets the CE marking requirements. The fan must be installed

according to ENISO12100:2010.

Electrical installation should be performed by

authorized personnel only.

Power is to be isolated at the main switch

5 minutes before carrying out any electrical

installation or product repairs. Sudden start-ups

should be prevented.

These devices can be a danger to life because

of their rotating parts and the risk of electric

shock. The fan is not supplied with a protective

grille on the inlet. Contact protection should

be installed if there is any danger of coming

into contact with the impeller because of the

installation method.

The potential for malfunction during operation

cannot be completely ruled out. To prevent

hazards, the appropriate safety measures must

be taken by the system designer or builder.

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5.2 INSTALLATION PRINCIPLE OF THE BOGA ROOF CURB (ADDITIONAL

ACCESSORY)

More detailed installation instructions from the structural designer

1. Roof fan

2. Mounting frame (included in the roof fan delivery)

3. BOGA roof curb

4. Mounting beams (included in BOGA delivery)

5. Rooﬁng felt/sheet (glued/screwed)

6. Cable glands

7. Thermal perforation of the lower end

BOGA size A B H

01&02 350 255 1203

03-05 570 475 1203

06&07 905 810 1203

01&02 472 255 1203

03-05 692 475 1203

06&07 1028 810 1203

EI60EI20

A+15

The duct must be fastened completely inside the thermal perforation

of the lower end (dimension B), and in addition the end surface must

be thermally insulated to the same ﬁre class as the demand for the

ducting is, using appropriate mineral wool. Wool must be mechanically

ﬁxed according to wool manufacturer instructions.

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5.3 INSTALLATION OF THE ROOF FAN

The fan can be installed on the BOGA roof curb or by using a mounting

frame on a chimney built on site. The mounting frame is included in the

delivery.

1. Remove the mounting frame from the roof fan (attached with four

M8×35 bolts).

2. Fasten the sealing tape (included) on both sides of the mounting

frame. Check that the sealing tapes are ﬂush with outer edge of the

mounting frame and cover the corners of the frame.

3. Install mounting frame carefully on the roof curb/chimney by using

four (eight on fan size 7) screws or wedge anchors. There are Ø10

mm holes on the mounting frame for this purpose.

Please note the following:

- Wind load on the fan as well as opening the fan will burden the joint.

- The safety switch and the roof curb’s electric cable lead-in should be

placed on the same side. This also determines the orientation of the

hinge.

Fan size STEF-ATEX mass [kg] STEF-HT mass [kg]

151 –

251 –

360 50

475 55

5 – 74

6 – 118

7 – 209

Hinge

Gasket

Safety switch

(additional accessory for the STEF-ATEX

fan, standard in the STEF-HT fan)

Mounting frame

Gasket

Chimney or roof curb BOGA

Lifting lugs

4. Lift the roof fan on top of the mounting frame, being careful not to

damage the seal, and install it in place with the M8×35 bolts (with

fan sizes 6 and 7 tighten bolts carefully by hand to not damage

the mounting frame or bottom plate). Lifting lugs are provided with

heavier fans to facilitate lifting. The table below lists the masses by

size category.

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5.4 ELECTRICAL CONNECTIONS

NOTE REGARDING CONNECTIONS

- The necessary electrical and general safety measures are to be

observed.

- If the motor is controlled by a frequency converter, the connections

must be made in accordance with the converter manufacturer’s

instructions. Take the ﬁre mode into account (STEF-HT).

- Setting of parameters: see the converter manufacturer’s instructions.

- The motor must be earthed.

- In converter use, the maximum length of the power supply cable is

50 m (STEF-HT).

- A supply disconnect switch must be installed on the power supply

cable.

- The fan must always be equipped with a safety switch.

- The safety switch provided with the roof fan should be installed

near the roof fan. The safety switch also acts as a power supply

connection point.

- The motor must be protected by either the converter motor

protection or a motor protection switch.

- The supply voltage should match the voltage speciﬁed on the roof

fan’s machine label and wiring diagrams.

- The power supply cable and front fuses must be dimensioned to

conform to local regulations.

- The motor cable must be ﬁre resistant (STEF-HT) of the installation

space requires it.

- If the plug in fuse for a small direct-drive three-phase motor (<0.55

kW) is dimensioned close to the rated current, there is a risk that a

fuse will blow on start-up and the motor will run in two phases. As a

consequence the motor will burn out. The current to the motor must

not vary so much as to trip the motor protection in this situation. The

fuse must be made larger or a three-phase circuit breaker must be

used.

- The thermistors of the ATEX motor must be connected to an

independently operating thermistor relay which will reliably cuts the

power supply to the motor in accordance with Section 1.5.1 of Annex

II (Essential health and safety requirements) to the ATEX Directive

2014/34/EU. Local installation regulations may allow thermistors to

be connected to devices other than thermistor relays, such as drive

control inputs.

- If the safety switch is installed in an ATEX space, it must be ATEX-

rated.

5.4.1 THE FAN IS EQUIPPED WITH A SAFETY SWITCH

1. Mount the safety switch in a suitable location (the mounting plate

supplied with the STEF-HT must be used, especially if the safety

switch is mounted on the fan casing or other surface that heats up

in the event of a ﬁre); bear in mind opening the fan for maintenance.

2. Open the cover of the safety switch.

3. Thread the ﬂexible power supply cable through the lead-in of the

safety switch. Save enough cable so that the fan section can be

opened during maintenance.

4. Make the connection and close the safety switch cover.

5. Check the operation of the safety switch.

5.5 CIRCUIT DIAGRAM

5.5.1 STEF-ATEX

Single-speed three-phase motor, star connection.

Safety switch (ADDITIONAL

ACCESSORY)

Distribution box

(NOT INCLUDED IN DELIVERY)

E4503497

6. When starting the fan, make sure that the direction of rotation is

correct.

5.4.2 FAN EQUIPPED WITH A SAFETY SWITCH INSTALLED ON LOCATION

1. Mount the safety switch in a suitable location; bear in mind opening

the fan for maintenance .

2. Open the safety switch cover.

3. Connect the cable from the fan motor to the safety switch.

4. safety switch. Save enough cable so that the fan section can be

opened during maintenance.

5. Make the connection and close the safety switch cover.

6. Check the operation of the safety switch.

When starting the fan, make sure that the direction of rotation is

correct.

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5.5.2 STEF-HT

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FläktGroup DC_10420GB 2022-10-04_R3

6 COMMISSIONING

6.1 SAFETY INSPECTION

Prior to start-up check that there are no loose or foreign objects in the

fan or duct system. Also check also that the fan has been installed

according to instructions. All the required protective equipment should

be installed.

The fan may only be commissioned once the appropriate instructions

have been followed and inspections have been performed.

6.2 TEST RUN

Run the fan brieﬂy to check that the direction of rotation is correct

and that the fan wheel rotates freely. If this is the case, the fan can be

switched on. Also check for abnormal mechanical noise from the fan,

and that the fan is ﬁrmly mounted.

7 MAINTENANCE

7.1 ATEX FAN

The non-sparking version (ATEX) must be checked at least twice a

year (impeller and motor) for possible

problems. If necessary, the impeller/motor must be cleaned/replaced.

7.2 FLUE GAS FAN

The operation of the ﬂue gas fan is to be checked in accordance with

local regulations. However, it should be veriﬁed at least every 6 months

by starting the fan and ensuring its trouble-free operation. If the fan

is also used for normal ventilation, the operation of the fan and the

need for cleaning (with any accessories) must be checked more often,

taking into operating conditions into account. Motor replacement is

recommended after 20,000 operating hours.

7.3 GUARANTEE

This guarantee is granted on condition that installation has been

carried out correctly and that the required maintenance has been

performed accordingly. Faults covered by the guarantee should be

reported to the manufacturer or importer immediately. The guarantee

does not cover maintenance operations or indirect costs.

7.4 MAINTENANCE

Power is to be isolated at the main switch

5 minutes before carrying out maintenance

operations. Sudden start-ups should be

prevented.

Make sure that fans that have been opened for

maintenance cannot fall closed.

7.4.1 CLEANING THE FAN WHEEL, MOTOR AND CASING

1. Disconnect the power supply to the fan at the safety switch and wait

at least 5 minutes.

2. Loosen the screws on the opening side by 10 mm so that the fan

section can be opened on its hinges. The stay rod (1 or 2, depending

on the size of the fan) locks automatically in its maximum position.

3. Make sure that the lever locks properly and that the bottom plate

and mounting frame fastenings are secure.

4. Perform the necessary cleaning operations.

5. Release the stay rod(s) by lifting the rod or pressing the locking

lever (depending on the size). Lower the fan section into position and

tighten the fastening screws. Start the fan. Make sure the fan wheel

rotates freely.

The casing may also be cleaned from above by removing the top plate;

see section 7.4.2, step 4.

Locking lever

Stay rod

Fastening screw

End bolt & washer

Opening side

Hinge side

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7.4.2 REPLACING THE MOTOR AND FAN IMPELLER

1. Disconnect the power supply to the fan at the safety switch

and wait at least 5 minutes.

2. Open the fan section as described in steps 2 and 3 of

section 7.4.1.

The open chimney should be protected to avoid debris, parts and

tools falling inside.

3. Remove the impeller end bolt & washer (see image in

section 7.4.1) and remove the impeller from the motor shaft.

Use a puller if necessary.

4. Lower the fan section and remove the roof and crossbar (and

motor protection for the STEF-HT version). Remove the cable

and motor.

5. Install the new motor and impeller in reverse order.

6. Lower the fan section and tighten the fastening screws. Start

the fan. Make sure the direction of rotation is correct and the

fan wheel rotates freely, and listen for unusual noises in the fan.

Top plate

Outer casing

(STEF-ATEX)

Crossbar

Hatch

(STEF-ATEX)

7.5 DISPOSAL OF THE PRODUCT

- All electrical components should be taken to an appropriate

recycling facility for disposal.

- Steel materials should be recycled.

- The product contains only very few plastic parts. The parts

are manufactured from recyclable materials.

8 AIRFLOW MEASUREMENT (STEF-HT)

The STEF-HT roof fan can measure airﬂow as standard. Airﬂow

measurement is taken using a manometer as a differential pressure

measurement. The measuring connections are located on the outer

casing of the roof fan and marked with +/-. A manometer or a separate

measuring device can be connected to the measuring connections. The

accuracy of airﬂow measurement is ± 10%.

To obtain the airﬂow corresponding to the differential pressure

measurement with an air density of 1.2kg/m³, the following formula is

used:

= airﬂow [m

/s]

k = fan-speciﬁc constant

Δp

= differential pressure measurement [Pa]

The fan-speciﬁc values for k can be found on the rating plate next to

the measuring connections and in the table below. The values apply

when using m³/s for calculation.

STEF k

323.72

422.64

515.33

610.41

75.89

qv=√Δpm

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PRODUCT CODES

Roof fan STEF-a-bbb-c-91-5

Size (a)

1, 2, 3, 4

Motor type (bbb)

0 = three-phase motor

Number of poles (bbb)

04, 06 (sizes 1 and 2 only with 4-pole motor)

Material (c)

1 = galvanised steel sheet, painted black

2 = ZM275-coated steel sheet

Model (dd)

91 = Ex db eb (Ex de) motor (IIB, T4, IP 55, insulation class F)

Version (e)

9 PRODUCT CODE

OPTIONAL

Roof curb, EI60 or EI120 BOGA-aa-2-c-d

Size (aa)

01, 02, 03, 04

Return damper (b)

2 = no return damper

Model (c)

4 = 1200 mm, EI60, 60 mm insulation

6 = 1200 mm, EI120, 120 mm insulation

Version

2, with EI60 version

3, with EI120 version

Safety switch SAFE-4-0-0

4 = ATEX model, three poles, auxiliary contact

0 = supplied loose

Version

Painting 60 μm (RAL classic shades of colour) STEF-a-MAALAUS-60

Fan size (a)

1…4

PRODUCT CODE

Roof fan STEF-a-bbb-c-6-4

Size (a)

3, 4, 5, 6, 7

Motor type (bbb)

0 = three-phase motor

Number of poles (bbb)

04, 06 (see the technical brochure for the right ﬁgure)

Material (c)

1 = galvanised sheet steel, painted black

2 = ZM275-coated sheet steel

Model (d)

6 = HT (high temperature)

Version (e)

NOTE! The SAFE safety switch and mounting frame are included in the

delivery of each STEF-HT roof fan.

OPTIONAL

Roof curb EI120 BOGA-aa-2-6-3

Size (aa)

03, 04, 05, 06, 07

Return damper (b)

2 = non return damper

Model (c)

6 = 1200 mm, EI120, 120mm insulation

Version (d)

Frequency converter STYR-aa-3-62-0-1

Power (aa)

17…21 (see the technical brochure for the right ﬁgure)

Voltage (b)

3 = 3-phase 400 V

Fan model and IP class (cc)

62 = STEF-HT, IP55

Installation (d)

0 = supplied loose

Version (e)

Pressure adjuster (230 V, supplied separately) STYZ-01-10-0-3

Timer (supplied separately) STYZ-01-40-0-0

Painting 60 μm (RAL classic shades of colour) STEF-a-MAALAUS-60

Fan size (a)

3…7

STEF-HT STEF-ATEX

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FläktGroup DC_10420GB 2022-10-04_R3

10 MANUFACTURER’S DECLARATION

FläktGroup Finland Oy, Rydönnotko 1, FIN-20360 TURKU, +358 20 442 3000, www.flaktgroup.com

FG_DC_10580GB 20210609_R0

CE – Declaration of Conformity

MANUFACTURER: FläktGroup Finland Oy

ADDRESS: Rydönnotko 1

20360 Turku

FINLAND

We hereby assure that

PRODUCT: Smoke exctract fan Roofmaster STEF-HT with accessories, equipped with

AC asyncronous motor and intended for use as class F400(120) fan,

fulfills fundamental requirements of directives and standards mentioned

below on the understanding that above-mentioned product is installed, used

and maintained according to instructions delivered with the product. If any

changes are made to the product, this declaration is no longer valid.

DIRECTIVES: 2006/42/EY (Machinery directive)

2014/30/EU (EMC-directive)

2014/35/EU (Low voltage directive)

2009/125/EY (ErP-directive)

305/2011 EU (Regulation, replaces directive 89/106/ETY)

STANDARDS : EN 12101-3

EN ISO 12100

EN ISO 13857

CERTIFICATE: 0809-CPR-21002926

ISSUED BY: Eurofins Expert Services Oy, notified body no. 0809

DECLARATION OF PERFORMANCE:

FG_DC_10581GB_STEF-HT roof fan_DOP_20210609_R0

DATE: 09.06.2021

SIGNATURE:

Jari Hokkanen

R&D Director, FläktGroup Finland Oy

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FläktGroup DC_10420GB 2022-10-04_R3

EC Declaration of Conformity

Manufacturer: FläktGroup Finland Oy

Address: Rydönnotko 1

FI-20360 Turku

Name and address of the person authorised to compile the relevant technical documentation:

Name: Heikki Stenberg Address: as above

Confirms that:

STEF roof fan with accessories and including the following

motor – drive combinations:

Induction AC-motor Ex de IIB T4 to be used with VSD

is classified as follows: Group II, Category 3G, Gas group IIB, temperature class T3 using Exde IIB T4 motor

and protection class EPL Gc.

CE II 3G Ex h IIB T3 Gc

The specific technical documentation has been written and is available. The specific documentation will be

transmitted to a reasoned request by national authorities.

and that this machinery is in conformity with the provisions of the following other EC-Directives:

2014/34/EU ATEX Directive

2006/42EC Machinery Directive

2014/35/EU Low Voltage Directive

2014/30/EU EMC Directive

2009/125/EC ErP-Directive

And furthermore, declares that

the following (parts/clauses of) European harmonised standards have been

applied: SFS-EN 14986:2017, EN ISO 12100:2010, EN ISO 13857:2008, EN

61000-6-2:2011, EN 61000-6-3:2011, EN ISO 5801 and is compliant with the

Regulation 327/2011.

This Declaration is valid only when the installation of the fan is done according to the instructions and no

modifications on the fan or accessories have been made.

Turku, 1.9.2018 Heikki Stenberg

R&D Manager

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FläktGroup DC_10420GB 2022-10-04_R3

FG_DC_10581GB 20210609_R0

DECLARATION OF PERFORMANCE

Nro. 020CPR2021-06-09

1. Product: Roof fan Roofmaster STEF-HT (STEF-a-bbb-c-6-4)

2. Intended use: Powered smoke and heat exhaust ventilator for use in construction works,

dual-purpose use

3. Manufacturer: FläktGroup Finland Oy, Rydönnotko 1, FI-20360 Turku

Tel: +358204423000, Email: info.fi@flaktgroup.com

4. System of AVCP: System 1

5. Harmonized standard: EN 12101-3:2015

6. Notified Body: Eurofins Expert Services Oy, nr. 0809

Performed determination the product type on the basis of type testing; initial

inspection of the manufacturing plant and of factory production control;

continuous surveillance, assessment and evaluation of the factory production

control (FPC) under system 1 and issued: Certificate of constancy of

performance 0809-CPR-21002926

7. Declared performance:

The performance of the product identified above is in conformity with the set of declared performance.

This declaration of performance is issued, in accordance with Regulation (EU) No 305/2011, under the

sole responsibility of the manufacturer identified above.

Signed for and on behalf of the manufacturer by:

Jari Hokkanen, R&D Director Turku 09.06.2021

…………………………………………...........

Essential charasteristics Performance Harmonized technical specification

Response delay NPD

Operational reliability

- Application categories

Dual purpose

- Motor rating Temp B/insulation F

Effectiviness of smoke/hot gas extraction

10%

Resistance to fire F400 (120)

Ability to open under environmental conditions NPD

Durability of operational reliability Temp B/insulation F

EN 12101-3:2015

WWW.FLAKTGROUP.COM STEF-ATEX&HT 10420GB

» Learn more on www.ﬂaktgroup.com

or contact one of our ofﬁces

FläktGroup is the European market leader for smart and energy efﬁcient

Indoor Air and Critical Air solutions to support every application area. We offer our

customers innovative technologies, high quality and outstanding performance

supported by more than a century of accumulated industry experience. The

widest product range in the market, and strong market presence in 65

countries worldwide, guarantee that we are always by your side, ready to

deliver Excellence in Solutions.

PRODUCT FUNCTIONS BY FLÄKTGROUP

Air Treatment | Air Movement | Air Diffusion | Air Distribution | Air Filtration

Air Management & ATD’s | Air Conditioning & Heating | Controls | Service

FläktGroup STEF-ATEX & STEF-HT Installation and Maintenance Manual

FläktGroup STEF-ATEX & STEF-HT Installation and Maintenance Manual

FläktGroup STEF-ATEX & STEF-HT Installation and Maintenance Manual

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