BLAUBERG Ventilatoren BSK User manual

Fire-resisting Duct Damper
USER’S MANUAL
EN
BsK
Fire-Resisting Duct Damper

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This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about purpose, technical details, operating principle, design, and installation of the BSK unit and all its
modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to
work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.
The information in this user’s manual is correct at the time of the document’s preparation.
The Company reserves the right to modify the technical characteristics, design, or configuration of its products at any time in order to
incorporate the latest technological developments.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means in any information
search system or translated into any language in any form without the prior written permission of the Company.
Safety requirements..................................................................................................................................................................... 2
Purpose................................................................................................................................................................................................ 4
Delivery set........................................................................................................................................................................................ 4
Designation key.............................................................................................................................................................................. 5
Technical data.................................................................................................................................................................................. 6
Design and operating principle........................................................................................................................................... 14
Mounting and set-up.................................................................................................................................................................. 15
Connection to power mains .................................................................................................................................................. 19
Technical maintenance.............................................................................................................................................................. 20
Storage and transportation regulations.......................................................................................................................... 20
Manufacturer’s warranty........................................................................................................................................................... 21
Certificate of acceptance.......................................................................................................................................................... 22
Seller information.......................................................................................................................................................................... 22
Installation certificate.................................................................................................................................................................. 22
Warranty card................................................................................................................................................................................... 22
SAFETY REQUIREMENTS
• Please read the user’s manual carefully prior to installing and operating the unit.
• All user’s manual requirements as well as the provisions of all the applicable local and national
construction, electrical, and technical norms and standards must be observed when installing
and operating the unit.
• The warnings contained in the user’s manual must be considered most seriously since they
contain vital personal safety information.
• Failure to follow the rules and safety precautions noted in this user’s manual may result in an
injury or unit damage.
• After a careful reading of the manual, keep it for the entire service life of the unit.
• While transferring the unit control, the user’s manual must be turned over to the receiving
operator.
CONTENTS

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BsK
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THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
UNIT INSTALLATION AND OPERATION SAFETY PRECAUTIONS
• Disconnect the unit from power mains prior to any installation operations.
• Unpack the unit with care.
• The unit must be grounded!
• While installing the unit, follow the safety regulations specific to the use of electric tools.
• Do not change the power cable length at your own discretion.
• Do not bend the power cable.
• Avoid damaging the power cable.
• Do not put any foreign objects on the power cable.
• Do not lay the power cable of the unit in close proximity to heating equipment.
• Do not use damaged equipment or cables when connecting the unit to power mains.
• Do not operate the unit outside the temperature range stated in the user’s manual.
• Do not operate the unit in aggressive or explosive environments.
• Do not touch the unit controls with wet hands.
• Do not carry out the installation and maintenance operations with wet hands.
• Do not wash the unit with water.
• Protect the electric parts of the unit against ingress of water.
• Do not allow children to operate the unit.
• The unit is allowed to be used by children aged from 8 years oldand above and persons with
reduced physical, sensory, or mental capabilities or no experience and knowledge provided
that they have been given supervision or instruction regarding safe use of the unit and
understand the risks involved.
• Disconnect the unit from power mains prior to any technical maintenance.
• Do not store any explosive or highly flammable substances in close proximity to the unit.
• When the unit generates unusual sounds, odour, or emits smoke, disconnect it from power
supply and contact the Seller.
• Do not open the unit during operation.
• Do not direct the air flow produced by the unit towards open flame or ignition sources.
• Do not block the air duct when the unit is switched on.
• In case of continuous operation of the unit, periodically check the security of mounting.
• Do not sit on the unit and avoid placing foreign objects on it.
• Use the unit only for its intended purpose.

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DELIVERY SET
NAME NUMBER
Damper 1 pc.
User’s manual 1 pc.
Packing box 1 pc.
THE UNIT SHOULD NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL, OR SENSORY CAPACITIES, OR THOSE WITHOUT THE APPROPRIATE
TRAINING.
THE UNIT MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED
PERSONNEL AFTER THE APPROPRIATE BRIEFING.
THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORIZED
ACCESS BY UNATTENDED CHILDREN.
PURPOSE
The fire dampers are intended for automatic closing of process openings and air duct penetrations in intermediate floors, walls and
partitions, as well as closing of openings in supply and exhaust ducts of smoke ventilation systems.
The dampers of this particular design are not suitable for installation in air ducts and ducts of premises with rated explosion and fire safety
category A and B and in flammable and explosive mixture intakes.
The BSK1 fire-resisting duct dampers are capable of resisting fire for at least 60 minutes (EI 60) at the temperature of 600 °C.
The BSK2 fire-resisting duct dampers are capable of resisting fire for at least 120 minutes (EI 120) at the temperature of 600 °C.
A fire safety damper prevents the spread of smoke and fire via ventilation and air conditioning system ducts in the event of fire. The BSK
dampers are installed in ventilation duct channels which cross fire-separation walls and ceilings. The fire resistance rating according to
EN 1366-2 is EIS 60 or EIS 120.

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BsK
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DESIGNATION KEY
Designation example: BSK2 25x25/1 PKP24T/ O S
Series
BSK - Fire-Stopping duct Damper (BrandSchutzKlappe) Normally open General industrial
(Allgemeine)
Fire resistance
1 − 1 hour
2 − 2 hours
Damper ow area width
20; 25; 30; 40; 50; 60; 80; 100
Damper ow area height
20; 25; 30; 40; 50; 60; 80; 100
Number of anges
1 − one
2 − two
Actuator Type
72S − thermal fuse and return spring (manual actuation)
PKP24T – 24 V ZERN electric actuator with a return spring and a thermal breaker
PKP230T – 230 V ZERN electric actuator with a return spring and a thermal breaker
PVP24T – 24 V BELIMO electric actuator with a return spring and a thermal breaker
PVP230T – 230 V BELIMO electric actuator with a return spring and a thermal breaker
PSP24T – 24 V SIEMENS electric actuator with a return spring and a thermal breaker
PSP230T – 230 V SIEMENS electric actuator with a return spring and a thermal breaker
Actuator Location
O − outside
I − inside (except for dampers with a height or width of less than 300 mm)
Design variant
_ − ordinary damper design;
S − simplified damper design (for BSK2 only)
Designation example: BSK 1 100 PKP24T
Series
BSK - Fire-Stopping duct Damper (BrandSchutzKlappe) Normally open
Fire resistance
1 – 1 hour ;
2 – 2 hours
Rated damper diameter [mm]
100; 125; 150; 160; 180; 200; 225; 250; 315; 355; 400
Actuator Type
1A − thermal fuse (72 °C), return spring (manual actuation)
PKP24T – 24 V ZERN electric actuator with a return spring and a thermal breaker
PKP230T – 230 V ZERN electric actuator with a return spring and a thermal breaker
PVP24T – 24 V BELIMO electric actuator with a return spring and a thermal breaker
PVP230T – 230 V BELIMO electric actuator with a return spring and a thermal breaker
PSP24T – 24 V SIEMENS electric actuator with a return spring and a thermal breaker
PSP230T – 230 V SIEMENS electric actuator with a return spring and a thermal breaker

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Model Dimensions [mm] Weight
[kg]
AA1 A2 BB1 B2
BSK1 20x20/2 72S/O 200 220 240 200 220 240 3.5
BSK1 25x20/2 72S/O 250 270 290 200 220 240 4
BSK1 25x25/2 72S/O 250 270 290 250 270 290 4.5
BSK1 30x20/2 72S/O 300 320 340 200 220 240 4.5
BSK1 30x25/2 72S/O 300 320 340 250 270 290 5.1
BSK1 30x30/2 72S/O 300 320 340 300 320 340 5.8
BSK1 40x25/2 72S/O 400 420 440 250 270 290 6.3
BSK1 40x30/2 72S/O 400 420 440 300 320 340 7.1
BSK1 40x40/2 72S/O 400 420 440 400 420 440 8.7
BSK1 50x30/2 72S/O 500 520 540 300 320 340 8.5
BSK1 50x40/2 72S/O 500 520 540 400 420 440 10.3
BSK1 50x50/2 72S/O 500 520 540 500 520 540 12
BSK1 60x40/2 72S/O 600 620 640 400 420 440 11.9
BSK1 60x50/2 72S/O 600 620 640 500 520 540 13.8
BSK1 60x60/2 72S/O 600 620 640 600 620 640 16.1
TECHNICAL DATA
The dampers are designed for operation in spaces with non-aggressive environment, the air temperature ranging from -30 °C to +45 °C
and relative humidity up to 80 %.
The dampers are compliant with the IPX4 standard (hazardous parts access and water ingress protection).
In terms of electric shock hazard the products belong to the following categories of electrical appliances:
• Class III (low voltage) for the dampers with 24 V electric actuator power supply.
• Class II (complete insulation) for the dampers with 230 V electric actuator power supply.
The dampers may not be integrated:
• Into air ducts and on premises rated explosion and fire safety category A and B.
• Into air ducts of local intakes for flammable and explosive mixtures.
• Into systems which do not undergo periodic cleaning pursuant to an approved schedule to prevent the build-up of combustible
deposits.
The damper undergoes continuous improvement. Therefore, some models may slightly differ from the ones described herein.
Overall and connecting dimensions of BSK1...72S dampers with a mechanical actuator
350
А
А1
А2
В
В2
В1

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BsK
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Model Dimensions [mm] Weight
[kg]
AA1 A2 A3 BB1 B2
BSK1 20x20/2 …/O 200 220 240 325 200 220 240 6.2
BSK1 25x20/2 …/O 250 270 290 375 200 220 240 6.8
BSK1 25x25/2 …/O 250 270 290 375 250 270 290 7.3
BSK1 30x20/2 …/O 300 320 340 425 200 220 240 7.3
BSK1 30x25/2 …/O 300 320 340 425 250 270 290 7.9
BSK1 30x30/2 …/O 300 320 340 425 300 320 340 8.5
BSK1 40x25/2 …/O 400 420 440 525 250 270 290 9.1
BSK1 40x30/2 …/O 400 420 440 525 300 320 340 9.8
BSK1 40x40/2 …/O 400 420 440 525 400 420 440 11.3
BSK1 50x30/2 …/O 500 520 540 625 300 320 340 10.7
BSK1 50x40/2 …/O 500 520 540 625 400 420 440 12.9
BSK1 50x50/2 …/O 500 530 560 635 500 530 560 16.6
BSK1 60x40/2 …/O 600 620 640 725 400 420 440 14.5
BSK1 60x50/2 …/O 600 630 660 735 500 530 560 18.4
BSK1 60x60/2 …/O 600 630 660 735 600 630 660 20.6
BSK1 80x50/2 …/O 800 830 860 935 500 530 560 22.3
BSK1 80x60/2 …/O 800 830 860 935 600 630 660 24.8
BSK1 80x80/2 …/O 800 830 860 935 800 830 860 30.1
BSK1 100x60/2 …/O 1000 1030 1060 1135 600 630 660 29
BSK1 100x80/2 …/O 1000 1030 1060 1135 800 830 860 35.4
BSK1 100x100/2 …/O 1000 1030 1060 1135 1000 1030 1060 41.7
Note: The values given in the table for dampers with 230 V actuators are identical for those equipped with 24 V actuators.
Overall and connecting dimensions of BSK1...PKP/BSK1...PSP dampers with electric actuators
350
В
В2
В1
А
А1
А2
А3

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Model Dimensions [mm] Weight
[kg]
AA1 A2 A3 BB1 B2 B3 S
BSK2 20x20/2 72S/O 200 220 240 280 200 220 240 280 315 12
BSK2 25x20/2 72S/O 250 270 290 330 200 220 240 280 365 13
BSK2 25x25/2 72S/O 250 270 290 330 250 270 290 330 365 14.1
BSK2 30x20/2 72S/O 300 320 340 380 200 220 240 280 415 14
BSK2 30x25/2 72S/O 300 320 340 380 250 270 290 330 415 15.3
BSK2 30x30/2 72S/O 300 320 340 380 300 320 340 380 415 18.8
BSK2 40x25/2 72S/O 400 420 440 480 250 270 290 330 515 19.2
BSK2 40x30/2 72S/O 400 420 440 480 300 320 340 380 515 19.7
BSK2 40x40/2 72S/O 400 420 440 480 400 420 440 480 515 22
BSK2 50x30/2 72S/O 500 520 540 580 300 320 340 380 615 22.5
BSK2 50x40/2 72S/O 500 520 540 580 400 420 440 480 615 24.7
BSK2 50x50/2 72S/O 500 520 540 580 500 520 540 580 615 29.8
BSK2 60x40/2 72S/O 600 620 640 680 400 420 440 480 715 29.7
BSK2 60x50/2 72S/O 600 620 640 680 500 520 540 580 715 36
BSK2 60x60/2 72S/O 600 620 640 680 600 620 640 680 715 38
Overall and connecting dimensions of BSK2...72S dampers with a mechanical actuator
S
В
В2
В3
В1
А
А1
А2
А3
380

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BsK
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Model
Dimensions [mm] Weight
[kg]
AA1 A2 A3 BB1 B2 B3 S
BSK2 20x20/2 …/O 200 220 240 280 200 220 240 280 340 13.3
BSK2 25x20/2 …/O 250 270 290 330 200 220 240 280 390 14.3
BSK2 25x25/2 …/O 250 270 290 330 250 270 290 330 390 15.4
BSK2 30x20/2 …/O 300 320 340 380 200 220 240 280 440 15.3
BSK2 30x25/2 …/O 300 320 340 380 250 270 290 330 440 16.6
BSK2 30x30/2 …/O 300 320 340 380 300 320 340 380 440 20.1
BSK2 40x25/2 …/O 400 420 440 480 250 270 290 330 540 20.5
BSK2 40x30/2 …/O 400 420 440 480 300 320 340 380 540 21
BSK2 40x40/2 …/O 400 420 440 480 400 420 440 480 540 23.3
BSK2 50x30/2 …/O 500 520 540 580 300 320 340 380 640 23.8
BSK2 50x40/2 …/O 500 520 540 580 400 420 440 480 640 26
BSK2 50x50/2 …/O 500 530 560 580 500 530 560 580 650 33
BSK2 60x40/2 …/O 600 620 640 680 400 420 440 480 740 32.7
BSK2 60x50/2 …/O 600 630 660 680 500 530 560 580 750 38.4
BSK2 60x60/2 …/O 600 630 660 680 600 630 660 680 750 43
BSK2 80x50/2 …/O 800 830 860 880 500 530 560 580 950 47
BSK2 80x60/2 …/O 800 830 860 880 600 630 660 680 950 52
BSK2 80x80/2 …/O 800 830 860 880 800 830 860 880 950 63
BSK2 100x60/2 …/O 1000 1030 1060 1080 600 630 660 680 1150 63
BSK2 100x80/2 …/O 1000 1030 1060 1080 800 830 860 880 1150 75
BSK2 100x100/2 …/O 1000 1030 1060 1080 1000 1030 1060 1080 1150 87
Note: The values given in the table for dampers with 230 V actuators are identical for those equipped with 24 V actuators.
Overall and connecting dimensions of BSK2...PKP/BSK2...PVP/BSK2...PSP dampers with electric actuators
S
В
В2
В3
В1
А
А1
А2
А3
380

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Model Dimensions [mm] Weight
[kg]
AA1 A2 A3 BB1 B2
BSK2 20x20/2 …/O S 200 220 240 340 200 220 240 5.7
BSK2 25x20/2 …/O S 250 270 290 390 200 220 240 6.2
BSK2 25x25/2 …/O S 250 270 290 390 250 270 290 6.9
BSK2 30x20/2 …/O S 300 320 340 440 200 220 240 6.8
BSK2 30x25/2 …/O S 300 320 340 440 250 270 290 7.5
BSK2 30x30/2 …/O S 300 320 340 440 300 320 340 9.2
BSK2 40x25/2 …/O S 400 420 440 540 250 270 290 9
BSK2 40x30/2 …/O S 400 420 440 540 300 320 340 10.8
BSK2 40x40/2 …/O S 400 420 440 540 400 420 440 12.6
BSK2 50x30/2 …/O S 500 520 540 640 300 320 340 12.3
BSK2 50x40/2 …/O S 500 520 540 640 400 420 440 14.3
BSK2 50x50/2 …/O S 500 530 560 650 500 530 560 23
BSK2 60x40/2 …/O S 600 620 640 740 400 420 440 16.2
BSK2 60x50/2 …/O S 600 630 660 750 500 530 560 25.6
BSK2 60x60/2 …/O S 600 630 660 750 600 630 660 28.6
BSK2 80x50/2 …/O S 800 830 860 950 500 530 560 31.3
BSK2 80x60/2 …/O S 800 830 860 950 600 630 660 34.7
BSK2 80x80/2 …/O S 800 830 860 950 800 830 860 42
BSK2 100x60/2 …/O S 1000 1030 1060 1150 600 630 660 40.7
BSK2 100x80/2 …/O S 1000 1030 1060 1150 800 830 860 50.2
BSK2 100x100/2 …/O S 1000 1030 1060 1150 1000 1030 1060 58
Note: The values given in the table for dampers with 230 V actuators are identical for those equipped with 24 V actuators.
Overall and connecting dimensions of BSK2...PKP...S/BSK2...PVP...S/BSK2...PSP...S dampers with electric actuators
А
А1
А2
А3
В
В2
В1
350

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BsK
11
The BSK...-1A re safety damper with a mechanical
actuating unit, a thermal fuse and a return spring
В
D
L
The BSK...PKP/BSK...PVP/BSK-10...PSP re safety damper
with an electric actuator and a thermally sensitive breaker
D
LB
Model Dimensions [mm] Weight
[kg]
Ø D L B
BSK…100 1A 99 170 112 1
BSK…125 1A 124 170 137 1.2
BSK…150 1A 149 170 162 1.5
BSK…160 1A 159 170 172 1.6
BSK…180 1A 179 170 192 1.8
BSK…200 1A 199 170 212 2
BSK…225 1A 224 170 237 2.2
BSK…250 1A 249 190 262 2.5
BSK…315 1A 314 190 327 3.6
BSK…355 1A 354 190 367 4.4
BSK…400 1A 399 240 412 6
Model Dimensions [mm] Weight
[kg]
Ø D L B
BSK…100 PKP(PVP, PSP) 99 300 195 2.9
BSK…125 PKP(PVP, PSP) 124 300 215 3.1
BSK…150 PKP(PVP, PSP) 149 300 245 3.4
BSK…160 PKP(PVP, PSP) 159 300 255 3.5
BSK…180 PKP(PVP, PSP) 179 300 275 3.8
BSK…200 PKP(PVP, PSP) 199 300 295 4
BSK…225 PKP(PVP, PSP) 224 300 325 4.4
BSK…250 PKP(PVP, PSP) 249 310 345 4.7
BSK…315 PKP(PVP, PSP) 314 310 415 6.5
BSK…355 PKP(PVP, PSP) 354 310 455 8.3
BSK…400 PKP(PVP, PSP) 399 310 505 9.9
Dampers with dimensions not included in the table can be produced on request.

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Main technical specications of Belimo electric actuators with a return spring and a thermal breaker
Technical data Basic models Models with increased torque Models with the highest torque
Rated operation voltage AC/DC 24 V AC 230 V AC/DC 24 V AC 230 V AC/DC 24 V AC 230 V
Permissible operating voltage tolerance AC 19.2…28.8 V
DC 21.6…28.8 V AC 198…264 V AC 19.2…28.8 V DC 21.6…28.8 V AC 198…264 V AC 19.2…28.8 V DC 21.6…28.8 V AC 198…264 V
AC mains frequency 50/60 Hz
Power consumption at rest [W] 0.8 1.1 1.4 2.1 2 3
Power consumption in operation [W] 2.5 3.5 4 5 7 8.5
Maximum design capacity [VA] 4 6.5 6 10 10 11
Motor torque [Nm] 4 9 18
Spring torque [Nm] 3 7 12
Protection class III II III II III II
Ingress protection rating IP54
Auxiliary switches 2 pcs., single-pole, reversible
1 mA…3 (0.5) A, AC 250 V
2 pcs., single-pole, reversible,
1 mA…6(3)A, AC 250 V
Electric motor connection cable 1 m, 2 x 0.75 mm² (halogen-free)
Auxiliary switch connection cable 1 m, 6 x 0.75 mm² (halogen-free)
Running time spring 20 seconds at -10…+55 °C
< 60 seconds at -30…-10 °C 16 seconds at +20 °C
Running time motor < 60 s/90° < 120 s/90°
Response temperature of thermal breaker sensors Duct sensor 72 °C
Outdoor sensor 72 °C
Service life Min. 60 000 emergency positions
Technical maintenance Not required
Main technical specications of Zern electric actuators with a return spring and a thermal breaker
Technical data Basic models Models with increased torque
Rated operation voltage AC/DC 24 V AC 100-240 V AC/DC 24 V AC 100-240 V
Permissible operating voltage tolerance AC/DC 19.2…28.8 V AC 85…265 V AC/DC 19.2…28.8 V AC 85…265 V
AC mains frequency 50/60 Hz
Power consumption at rest [W] 3
Power consumption in operation [W] 5
Motor torque [Nm] 5 8
Spring torque [Nm]
Protection class III II III II
Ingress protection rating IP54
Auxiliary switches 2 pcs., single-pole, reversible,
1 mA…3(0.5)A, AC 220 V
Electric motor connection cable 1 m, 2 x 0.5 mm² (halogen-free)
Auxiliary switch connection cable 1 m, 6 x 0.5 mm² (halogen-free)
Running time spring <20 seconds
< 60 seconds at -30…-10 °C
<25 seconds
< 60 seconds at -30…-10 °C
Running time motor < 70 s/95° < 100 s/95°
Response temperature of thermal breaker sensors Duct sensor 72 °C
Outdoor sensor 72 °C

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BsK
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Main technical specications of Siemens electric actuators with a return spring and a thermal breaker
Technical data Basic models Models with increased torque Models with the highest torque
Rated operation voltage AC 24 V/
DC 24…48 V AC 230 V AC 24 V/ DC 24…48 V AC 230 V AC 24 V/ DC 24…48 V AC 230 V
Permissible operating voltage tolerance AC/DC ±20 % AC ±15 % AC/DC ±20 % AC ±15 % AC/DC ±20 % AC ±15 %
AC mains frequency 50/60 Hz
Power consumption at rest [W] 2 3.5 2 3.5 3 4
Power consumption in operation [W] 3.5 4.5 3.5 4.5 5 6
Maximum design capacity [VA] 5 7 5 7 7 8
Motor torque [Nm] 4 9 18
Spring torque [Nm] 4 7 18
Protection class III II III II III II
Ingress protection rating IP54
Auxiliary switches 2 pcs., single-pole, reversible,
6(2)A, AC 24...250 V
Electric motor connection cable 0.9 m, 2 x 0.75 mm² (halogen-free)
Auxiliary switch connection cable 0.9 m, 6 x 0.75 mm² (halogen-free)
Running time spring 15 seconds
< 60 seconds at -30…-10 °C
Running time motor 90 s/90°
Response temperature of thermal breaker sensors Duct sensor 72 °C
Outdoor sensor 72 °C
Service life 10 000 emergency positions
Technical maintenance Not required

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DESIGN AND OPERATING PRINCIBSKE
BSK1...72S re safety damper with a mechanical actuating
unit with a thermal fuse and a return spring
Casing
Return spring
Thermal fuse
Air damper
BSK1...PKP/BSK1...PVP/BSK1...PSP re safety damper with a
Belimo electric actuator and a thermoelectric breaker
Electric actuator
Casing
Thermoelectric breaker Air damper
The BSK2...72S re safety damper with a mechanical actuating unit with a thermal fuse and a return spring
Flap gate mechanism
Casing
Handle
Seal
Hot and cold
zone baffle
Thermal fuse
Lock
Air damper
The BSK2...PKP/BSK2...PVP/BSK2...PSP re safety damper with a Belimo electric actuator and thermoelectric breaker
Casing
Electric actuator
Seal
Hot and cold zone baffle
Damper swing
mechanism
Air damper
Thermoelectric breaker
The BSK2...PKP...-1/BSK2...PVP...-1/BSK2...PSP...S re safety damper with a Belimo electric actuator and thermoelectric reaker
Casing
Electric actuator
Damper swing
mechanism
Air damper
Thermoelectric breaker Casing perforation
Ceramic fibre and
aluminium foil tape
Casing
The BSK...-1A re safety damper with a mechanical ctuating
unit, a thermal fuse and a return spring
Casing
Thermal fuse
Air damper
Return spring
Hot and cold zone
baffle (E1 120 only)
The BSK... PKP /BSK... PVP /BSK... PSP re safety damper with
an electric actuator and a thermoelectric breaker
Casing
Air damper
Thermoelectric breaker
Electric actuator
Hot and cold zone
baffle (E1 120 only)

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BsK
15
MOUNTING AND SETUP
The dampers are installed into square or rectangular (BSK1, BSK2 series) and round (BSK series) air ducts of ventilation
systems, and the apertures of ventilation shafts, division walls and re partitions.
The installation of the dampers into ventilation systems must be carried out in consideration of the air ow direction.
While installing electrically actuated dampers provide for sucient space for the actuator inspection.
When preparing the fire-safety dampers for installation the damper casing must be fitted with wooden spreader bars to prevent
deformation, torsional twisting or geometry perturbation of the casing which may result in flap jamming and, eventually, loss of the
damper functionality.
Following the damper installation into the shaft, wall or ceiling filler structure section and upon complete curing (immobilization) of the
mortar make sure to remove the wooden spreader bars. The damper must open and close freely without excessive friction.
To install the dampers into the apertures of wall or ceiling slabs fill up the gaps between the damper casing and the aperture. The gaps
are filled with fire-resistant mortar.
The damper design enables its attachment to air ducts and other ventilation system components by means of flanges as well as its
installation into filler structures. Under any installation scenario the mating structure fire-resistance level must be upgraded by using extra
fire insulation to at least match that of the filler structure of the respective fire-safety zone.
BSK1, BSK2 DAMPER INSTALLATION
The dampers can be installed in any position into vertical and horizontal channels of fire-protection structures. The damper installation
openings must be made in such a way so as to prevent the transfer of loads caused by the fire-protection structures to the damper casing.
The adjoining air duct must be suspended in such a way so as to prevent the transfer of air duct load to the damper flange. There must
be at least 350 mm of unrestricted clearance for accessing the control elements. Make sure to arrange an inspection hole. While carrying
out the installation mind size K. When two or more dampers are installed into the same fire-protection separation structure the distance
between the two adjacent dampers must be at least 200 mm.
The damper must be installed in such a way that the damper flap lies in the fire-protection divider structure plane while closed. If
such installation is not possible, the damper casing part between the fire-protection separation structure and the damper flap must be
insulated with a suitable material pursuant to the applicable standards.
The damper control mechanism must be protected against damage and contamination. Avoid damper casing deformation during the
embedding. After the installation the flap must not catch against the damper casing while opening or closing.
Fire-safety dampers can be integrated into a tight wall structure – e.g. made of conventional concrete work of minimum width
W = 100 mm or into a plasterboard wall of the necessary fire resistance class or into a tight ceiling structure – e.g. made of conventional
concrete of minimum width W = 150 mm.
The recommended values for construction openings are given below.

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INSTALLATION RECOMMENDATIONS FOR BSK1...72S DAMPERS WITH A THERMAL FUSE AND A RETURN SPRING
А
А+160
В
В+160
Wall (re separation)
Wall (re separation)
Insulation
Fire-resisting damper with a thermal link
and return spring
Fire-resisting damper with a thermal link
and return spring
Fire-resisting damper with a thermal link
and return spring
K
W
K
W
Ceiling (re separation)
Intermediate Layer
Intermediate layer
Intermediate layer
INSTALLATION RECOMMENDATIONS FOR BSK1...PKP/BSK1...PVP/BSK1...PSP FIRE SAFETY DAMPERS WITH ELECTRIC
ACTUATOR AND THERMOELECTRIC
K
W
270
K
W
Wall (re separation)
Intermediate
Layer
Ceiling (re separation)
Fire-resisting damper
with an electrical actuator
Fire-resisting damper
with an electrical actuator
Intermediate
layer
INSTALLATION RECOMMENDATIONS FOR BSK2...72S DAMPERS WITH A THERMAL FUSE AND A RETURN SPRING
А
А+160
В
В+160
K
W
Wall (re separation)
Intermediate layer
Intermediate layer
Fire-resisting damper with a thermal link
and return spring
Fire-resisting damper
with a thermal link and return spring
K
W
Ceiling (re separation)

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BsK
17
INSTALLATION RECOMMENDATIONS FOR BSK2...PKP/BSK2...PVP/BSK2...PSP FIRE SAFETY DAMPERS WITH ELECTRIC
ACTUATOR AND THERMOELECTRIC BREAKER
А
А+160
В
В+160
K
W
Intermediate layer
Intermediate layer
Intermediate layer
Wall (re separation)
Wall (re separation)
Fire-resisting damper
with an electrical actuator
Fire-resisting damper
with an electrical actuator
Fire-resisting damper
with an electrical actuator
K
W
Ceiling (re separation)
Insulation
INSTALLATION RECOMMENDATIONS FOR BSK2...PKP...S/BSK2...PVP...S/BSK2...PSP...S FIRE SAFETY DAMPERS WITH AN
ELECTRIC ACTUATOR AND THERMOELECTRIC BREAKER
А
А+160
В
В+160
K
W
Wall (re separation)
Intermediate layer
Intermediate layer
K
W
Ceiling (re separation)
Fire-resisting damper, light-weight
version with an electrical actuator
Fire-resisting damper, light-weight
version with an electrical actuator

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18
BSK DAMPER INSTALLATION
Fire-safety dampers can be installed into solid walls with the minimum width of W = 150 mm, into both round and square apertures,
minimum intermediate layer thickness S = 50 mm. The walls can be made of concrete, brick or foam concrete blocks. The intermediate
layer can be made of concrete or mortar. While carrying out the installation mind size K. When installing the dampers into thicker walls
add an extender section on one of the damper sides.
The electric actuator can be positioned freely on either side of the fire control sector (space) wall.
Wall (re separation)
Intermediate layer
Fire-resisting damper
K
W
S
D
D+2S
D
D+2S
K
W
S
Wall (re separation)
Intermediate layer
Fire-resisting damper
with an electrical actuator
Fire-safety dampers can be installed into solid ceiling panels with the minimum thickness of W = 150 mm, minimum intermediate layer
thickness S = 50 mm. The ceiling panels are made of concrete. The intermediate layer can be made of concrete or mortar. While carrying
out the installation mind size K.
When installing the dampers into thicker walls add an extender section on one of the damper sides.
The electric actuator can be positioned freely above or below the ceiling panel of the fire control sector (space).
Ceiling panel (re separation)
Intermediate layer
Fire-resisting damper
K
W
SExtender section (if necessary)
K W
S
Ceiling panel (re separation)
Intermediate layer
Fire-resisting damper
with an electrical actuator
Extender section
(if necessary)
Permissible positions for re-safety damper installation
The damper axle and actuation mechanism can be installed in any position – from horizontal to vertical.

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BsK
19
CONNECTION TO POWER MAINS
The actuators featuring a return spring are designed to control fire-resisting dampers and smoke-extraction dampers installed in
ventilation and air-conditioning systems.
The return spring is cocked upon setting the damper flap to the horizontal position. In case of a power failure, the damper flap is re-set
to the protective position by the energy stored in the spring.
The damper does not require any limit switches and is overload-proof.
The thermally sensitive breaker Tf1 actuates upon ambient temperature exceeding 72 °C. The renewable thermally sensitive breakers Tf2
and Tf3 actuate upon the air duct temperature exceeding 72 °C. The operation of the renewable thermally sensitive breakers interrupts
the electric power supply in such a way that it prevents actuator re-activation without their replacement.
The button on the thermally sensitive breaker body enables testing the damper functionality.
The actuator is equipped with two fixed microswitches which signal the end positions.
Intermediate positions of the damper are shown by the mechanical indicator (needle).
The BF24-T and BFN24-T actuators are connected via an insulated transformer unit .
The damper can also be controlled manually and fixed in any position. The unit can be unlocked either manually using a hex wrench
(included) or automatically upon power-up.
The actuator connections (cables and wires) must be durable, insulated and heat-resistant.
The recommended minimum conductor cross-section is 0.75 mm.The conductor cross-section selection must account for the maximum
permissible wire heating which depends on the wire type, its insulation, length and installation method (i.e. overhead, in cable channels
or inside walls).
Electrical connection of Belimo electric actuators with the highest torque, as
well as Siemens electric actuators
1 2 S1 S2 S3 S4
M
S5 S6
< 5° < 80°
< 25°< 145°
Tf1 Tf2 Tf3 LED
–+
T
~
NL1
AC 24 V
AC 230 V
DC 24 V
Thermal breaker
Connection via transformer
Several wires may be
connected with respect
to power consumption
Electrical connection of the basic models of Belimo and Zern electric
actuators, as well as Belimo and Zern models with increased torque
1 2 S1 S2 S3 S4
M
S5 S6
< 5° < 80°
Tf1 Tf2 LED
–+
T
~
NL1
Connection via transformer
AC 230 V
DC 24 V
AC 24 V
Thermal breaker

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STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from +5 ˚C to +40 ˚C and relative humidity up to 70 %.
• Storage environment must not contain aggressive vapors and chemical mixtures provoking corrosion, insulation, and sealing
deformation.
• Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
• Follow the handling requirements applicable for the particular type of cargo.
• The unit can be carried in the original packaging by any mode of transport provided proper protection against precipitation and
mechanical damage. The unit must be transported only in the working position.
• Avoid sharp blows, scratches, or rough handling during loading and unloading.
• Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature for at least
3-4 hours.
The damper technical maintenance includes routine inspections and functionality checks.
The damper technical maintenance frequency must comply with the established technical maintenance frequency of the fire safety
equipment complex of the facility.
The routine inspections must include repair-and-renewal operations and cleaning the damper internal of any debris as necessary.
The damper functionality is checked by energizing the electric actuator. The damper must close on power-up. The data obtained in the
course of the damper technical maintenance must be entered into the logbook. Combined logbooks may be kept for the entire fire-
safety equipment complex of the facility.
TECHNICAL MAINTENANCE