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RDT-07-0122

NORD

fire

FDMQ

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2.2 Design with actuating mechanism

Design .40, .50

FDMQ is always equipped by electric actuating mechanism BFL, BFN, BF 230-TN or BFL, BFN,

BF 230-TN (further only "actuating mechanism"). After being connected to power supply AC/DC

24V or 230V, the actuating mechanism displaces the damper blade into operation position

"OPEN" and at the same time it pre-stretches its back spring. When the actuating mechanism is

under voltage, the damper blade is in the position "OPEN" and the back spring is pre-stretched.

Time needed for full opening of the flap blade from the position "CLOSED" to the position "OPEN"

is maximum 120 sec. If the actuating power supply is cut off (due to loss of supply voltage, or

pushing the reset button on the thermoelectrical starting mechanism BAT), the back spring

displaces the damper blade into the breakdown position "CLOSED". The time of displacing the

blade from the position "OPEN" to the position "CLOSED" takes maximum 20 sec. In case that

the power supply is restored again (the blade can be in any position), the actuating mechanism

starts to re-displace the damper blade into the position "OPEN".

A thermoelectrical starting mechanism BAT, which contains two thermal fuses Tf1 and Tf2, is a

part of the actuating mechanism. These fuses are activated when tempe72°C has been

exceeded (the fuse Tf1 when the temperature around the damper and the fuses Tf2 when the

temperature inside the air-conditioning piping has been exceeded). After the thermal fuse Tf1 or

Tf2 has been activated, the power supply is permanently and irreversibly cut off and the actuating

mechanism, by means of the pre-stretched spring, displaces the damper blade into the

breakdown position "CLOSED".

Signalisation of damper blade position "OPEN" a "CLOSE" is provided by two limit switches.

Fig. 8 Design .40, .50

Fig. 9 Actuating mechanism BELIMO BFL BFL (BFN) 230-T

AC230 V

BAT

Actuating mechanism

Содержание NORDfire

Страница 1: ...mper Square dampers from 150 150 mm to 1 500 800 mm CE certified acc to EN15650 Fire resistance up to EIS 120 External Casig leakage class C Internal leakage class 2 acc to EN 1751 Damper actuating mechanical or electrical ...

Страница 2: ...n on BAT is pushed or when a power supply of the actuating mechanism is stopped The damper is sealed with a silicon packing against smoke penetration after closing the blade At the same time the damper blade is bedded in a material which enlarges its capacity and air proofs the air duct Dampers have two inspection holes 1 2 Damper characteristics CE certified acc to EN 15650 Tested in accordance w...

Страница 3: ...ith mechanical control with a thermal protective fuse which actuates the shutting device after the nominal start temperature 72 C has been reached Automatic initiation of the shutting device is not activated if the temperature does not exceed 70 C In case that other start temperatures are required thermal fuses with nominal start temperature 104 C or 147 C can be supplied this requirement must be ...

Страница 4: ...rent AC 230 V 5A Class of protection IP 67 Working temperature 25 C 120 C Fig 7 Change of mechanical design for the motorised one or vice versa Position 1 Damper 2 Mounting plate 3 Sealing cover 4 Seal plates 5 Mounting plate cover 6 Thermal fuse 7 Mechanics 8 Actuator 9 Temperature sensor 10 Sensor sticker Limit switch OPEN Limit switch CLOSED This limit switch is possible to connect in following...

Страница 5: ... the damper blade into the breakdown position CLOSED The time of displacing the blade from the position OPEN to the position CLOSED takes maximum 20 sec In case that the power supply is restored again the blade can be in any position the actuating mechanism starts to re displace the damper blade into the position OPEN A thermoelectrical starting mechanism BAT which contains two thermal fuses Tf1 a...

Страница 6: ...oning 6 5 10 VA Imax 4 A 5 ms 4 6 VA Imax 8 3 A 5 ms Protection class II III Degree of protection IP 54 Running time motor spring return 60 s 20 s Ambient temperature normal duty safety duty non operating temperature 30 C 55 C The safe position will be attained up to max 75 C 40 C 55 C Connecting motor auxiliary switch cable 1 m 2 x 0 75 mm BFL BFN 24 T ST with 3 pin plug in connectors cable 1 m 6...

Страница 7: ... W 3 W Dimensioning 10 VA Imax 8 3 A 5 ms 12 5 VA Imax 500 mA 5 ms Protection class III II Degree of protection IP 54 Running time motor spring return 120 sec 16 sec Ambient temperature normal duty safety duty non operating temperature 30 C 55 C The safe position will be attained up to max 75 C 40 C 55 C Connecting motor auxiliary switch cable 1 m 2 x 0 75 mm cable 1 m 6 x 0 75 mm BF 24 T ST with ...

Страница 8: ... sticker 6 Hole for camera Fig 13 Design with actuating mechanism Position 1 Damper casing 2 Actuating mechanism 3 Damper blade 4 Inspection hole covering 5 BAT thermoelectrical starting mechanism 6 Hole for camera Dimensions 35 A 10 B 10 275 123 110 35 80 20 65 A B 30 30 375 35 A 10 B 10 275 35 80 20 65 A 30 375 B 30 Dimensions 35 A 10 B 10 275 123 110 35 80 20 65 A B 30 30 375 35 A 10 B 10 275 3...

Страница 9: ...0586 BFL M1 x450 148 15 0 18 0 0 0674 BFL M1 x500 173 16 5 18 0 0 0761 BFL M2 x550 198 17 5 20 5 0 0849 BFL M2 x560 203 17 5 20 5 0 0866 BFL M2 x600 223 18 5 23 0 0 0936 BFL M2 AxB a c Kaal Vaba pind m2 Ajami tüüp Mehh kontr Manu aalne Ajamiga x630 238 19 0 22 0 0 0989 BFL M2 x650 3 248 19 5 22 5 0 1024 BFL M2 250x700 28 273 20 5 25 0 0 1111 BFN M2 x710 33 278 21 0 24 0 0 1129 BFN M2 x750 53 298 2...

Страница 10: ...1 0 24 0 0 1407 BFN M2 x560 203 21 5 24 5 0 1436 BFN M2 x600 223 22 5 25 5 0 1639 BFN M2 x630 238 23 0 26 0 0 1697 BFN M2 AxB a c Kaal Vaba pind m2 Ajami tüüp Mehh kontr Manu aalne Ajamiga x650 3 248 23 5 26 5 0 1712 BFN M2 x700 28 273 25 0 28 0 0 1842 BFN M2 x710 33 278 25 0 28 0 0 1871 BFN M2 x750 53 298 26 0 29 0 0 1987 BFN M3 315x800 78 323 27 5 30 5 0 2132 BFN M3 355x150 11 8 11 9 0 0281 BFL ...

Страница 11: ... 5 33 5 0 2809 BFN M2 x630 238 31 0 34 0 0 2966 BF M2 x650 3 248 32 0 35 0 0 3071 BF M2 x700 28 273 34 0 37 0 0 3334 BF M2 x710 33 278 34 0 37 0 0 3386 BF M2 AxB a c Kaal Vaba pind m2 Ajami tüüp Mehh kontr Manu aalne Ajamiga x750 53 298 35 5 38 5 0 3596 BF M3 x800 78 323 37 0 40 0 0 3859 BF M3 560x150 15 4 15 5 0 0455 BFL M1 x180 13 16 5 18 5 0 0615 BFL M1 x200 23 17 0 18 5 0 0722 BFL M1 x225 36 1...

Страница 12: ...278 42 5 45 5 0 4354 BF M2 x750 53 298 44 0 47 0 0 4624 BF M3 x800 78 323 46 0 49 0 0 4961 BF M4 710x150 18 0 18 1 0 0582 BFL M1 AxB a c Kaal Vaba pind m2 Ajami tüüp Mehh kontr Manu aalne Ajamiga x180 13 20 0 21 5 0 0788 BFL M1 x200 23 21 0 22 5 0 0925 BFL M1 x225 36 21 5 23 5 0 1096 BFL M1 x250 48 22 0 24 5 0 1267 BFL M1 x280 63 23 0 26 0 0 1473 BFL M1 x300 73 23 5 26 5 0 1610 BFL M2 x315 80 5 24...

Страница 13: ... 5 58 5 0 7166 BF M4 1100x180 13 28 0 29 5 0 1236 BFL M1 x200 23 29 0 30 5 0 1451 BFL M2 x225 36 30 5 32 0 0 1720 BFL M2 x250 48 32 0 33 5 0 1989 BFL M2 AxB a c Kaal Vaba pind m2 Ajami tüüp Mehh kontr Manu aalne Ajamiga x280 63 34 0 35 5 0 2311 BFL M2 x300 73 35 0 36 5 0 2526 BFN M2 x315 80 5 36 0 37 5 0 2688 BFN M2 x355 100 5 38 0 40 0 0 3118 BFN M2 x400 123 38 5 41 0 0 3601 BFN M2 x450 148 40 5 ...

Страница 14: ...5 5 48 5 0 3466 BFN M2 x315 80 5 46 5 49 5 0 3688 BFN M2 x355 100 5 49 5 52 5 0 4278 BFN M3 x400 123 53 0 56 0 0 4941 BF M3 x450 148 55 0 58 0 0 5679 BF M3 AxB a c Kaal Vaba pind m2 Ajami tüüp Mehh kontr Manu aalne Ajamiga x500 173 57 0 60 0 0 6416 BF M3 x550 198 58 5 61 5 0 7154 BF M3 1500x560 203 59 5 62 5 0 7301 BF M3 x600 223 62 5 65 5 0 7891 BF M4 x630 238 64 0 67 0 0 8334 BF M5 x650 3 248 65...

Страница 15: ...Flanges of rectangular fire dampers are 30 mm wide with oval ho Act mechanism side a Side without act mechanism c a c 30 1 0 A B 17 10 35 A 1 0 B 1 0 22 15 Blades overlaps For the design 60 with BKN supply and communication device add to weight of the damper with an actuating mechanism Tab 4 2 1 the weight of BKN 0 5 kg Dampers can be supplied on the customer s demands in all subdimension of the a...

Страница 16: ...at the minimum according to EN 1366 2 paragraph 13 5 For admissible exceptions see Section 6 Fig 17 The distance between the fire damper and the construction The fire dampers are suitable for installation in arbitrary position in vertical and horizontal passages of fire separating structures The damper assembly procedures must be done so that all load transfer from the fire separating construction...

Страница 17: ...ith minimum thickness 125 mm The fire damper can be integrated into a gypsum wall construction with fire classification EI 120 or EI 90 The fire damper can also be integrated outside the wall construction Duct and the damper part between the wall construction and the damper blade labelled with BUILD IN EDGE on the protective covering must be protected with fire fighting insulation If is damper ins...

Страница 18: ...nd fire protection mastic EIS 90 26 Gypsum wall construction 100 Mortar or gypsum EIS 120 EIS 90 27 100 Fire protection foam with stucco plaster EIS 60 EIS 45 EIS 30 28 100 Battery mortar or gypsum EIS 90 29 100 Installation next to wall mortar or gypsum and mineral wool EIS 90 30 100 Stuffing box with fire protection mastic and cement lime plate EIS 90 31 100 Weichschott EIS 90 32 Outside gypsum ...

Страница 19: ...rporation and damper are illustrative only Fig 21 Solid wall construction fire protection foam with stucco plaster EIS 60 EIS 45 EIS 30 Position 1 Fire damper 2 Solid wall construction 3 Fire protection foam 4 Stucco plaster 5 Duct Used materials example 3 HILTI CFS F FX EIS 60 PROMAFOAM C EIS 45 SOUDAL Soudafoam FR B1 EIS 30 DenBraven Fire protection foam EIS 30 30 75 100 20 75 100 The damper mus...

Страница 20: ...n damper and construction is filled by mortar or gypsum Distance between dampers 60 mm Flange to flange connection Up to 4 dampers can be installed Up to 4 dampers can be installed Shown schemes of incorporation and damper are illustrative only The gap 67 mm between dampers can be filled by mineral stone wool min density 140 kg m Wool is fixed to damper body by fire protection mastic The gap 67 mm...

Страница 21: ...0 B 100 Position 1 Fire damper 2 Mortar or gypsum 3 Stuffing box mineral stone wool min density 140 kg m Notice Gap between damper and construction is filled by mortar or gypsum and mineral wool Wool is fixed to damper body and construction by fire protection mastic Mineral wool thickness construction thickness 20 mm or 50 mm Installation is valid for ceiling construction Shown schemes of incorpor...

Страница 22: ...ness 15 mm min density 870 kg m 6 Duct Used materials example 3 Promapyr Rockwool Steprock HD Hilti CFS CT B 1S 140 50 4 Promastop P K Hilti CFS CT 5 Promatect H Fire resistant insulation and fire resistant board can be replaced by another approved fire sealing system for damper installation with equivalent material properties The damper must be anchored to the fire wall construction Shown schemes...

Страница 23: ...CFS CT B 1S 140 50 4 Hilti CFS CT Fire resistant insulation and fire resistant board can be replaced by another approved fire sealing system for damper installation with equivalent material properties Shown schemes of incorporation and damper are illustrative only 100 Position 1 Fire damper 2 Solid wall construction 3 Fire resistant board 4 Fire stop coating thickness 1 mm 5 Duct Used materials ex...

Страница 24: ...LAB 4 0 th 80 mm ALU1 The materials for stuffing box fire protection mastic lining and insulation materials can be replaced by another approved fire sealing system with equivalent properties The maximum distance of the fire damper from the structure is not limited and according to EN 15882 2 the required number of suspensions acc to EN 1366 1 2014 must be used The duct at the point of penetration ...

Страница 25: ...ol Steprock HD Hilti CFS CT B 1S 140 50 4 Promastop P K Hilti CFS CT 5 Isover Ultimate Protect SLAB 4 0 th 80 mm ALU1 The materials for stuffing box fire protection mastic lining and insulation materials can be replaced by another approved fire sealing system with equivalent properties The maximum distance of the fire damper from the structure is not limited and according to EN 15882 2 the require...

Страница 26: ...s can be replaced by another approved fire sealing system for damper installation with equivalent material properties Depends on the distance of the flap from the construction when the maximum distance from the construct is not limited and according to EN 15882 2 must use the required number of hinges according to EN 13366 1 2014 Installation of profile U25x40x25 see Fig 79 ruction neral stone woo...

Страница 27: ...sition 1 Fire damper 2 Gypsum plate 3 Mineral wool type depending on the type of construction 4 Mortar or gypsum 5 Duct Shown schemes of incorporation and damper are illustrative only Installation in gypsum wall construction 100 20 75 100 75 Around the perimeter Installation opening has to be reinforced by steel U profile Profile is fixed by screws 3 5 mm with corre sponding length Distance betwee...

Страница 28: ... Used materials example 4 HILTI CFS F FX EIS 60 PROMAFOAM C EIS 45 SOUDAL Soudafoam FR B1 EIS 30 DenBraven Fire protection foam EIS 30 The damper must be anchored to the fire wall construction Shown schemes of incorporation and damper are illustrative only 40 20 75 100 Installation opening has to be reinforced by steel U profile Profile is fixed by screws 3 5 mm with corre sponding length Distance...

Страница 29: ...100 75 67 75 100 67 EIS 90 The gap 67 mm between dampers can be filled by mineral stone wool min density 140 kg m Wool is fixed to damper body by fire protection mastic Installation opening has to be reinforced by steel U profile Profile is fixed by screws 3 5 mm with corre sponding length Distance between screws 200 mm The gap 67 mm between dampers can be filled by mineral stone wool min density ...

Страница 30: ... is filled by mortar or gypsum and mineral wool Wool is fixed to damper body and construction by fire protection mastic Mineral wool thickness construction thickness 20 mm or 50 mm Installation is valid for ceiling construction Shown schemes of incorporation and damper are illustrative only 75 75 75 A 100 B 100 75 100 100 20 Installation opening has to be reinforced by steel U pro file Profile is ...

Страница 31: ...p P K Hilti CFS CT 6 Promatect H Fire resistant insulation and fire resistant board can be replaced by another approved fire sealing system for damper installation with equivalent material properties The damper must be anchored to the fire wall construction Shown schemes of incorporation and damper are illustrative only 75 20 100 300 25 Kruvi min 4x50 300 25 300 Kogu perimeetri ulatuses EIS 90 Ins...

Страница 32: ...0 4 Hilti CFS CT Fire resistant insulation and fire resistant board can be replaced by another approved fire sealing system for damper installation with equivalent material properties Shown schemes of incorporation and damper are illustrative only 100 D 60 kuni 800 max 2050 D 60 kuni 800 max 1650 EIS 90 Installation opening has to be reinforced by steel U profile Profile is fixed by screws 3 5 mm ...

Страница 33: ...l wool type depending on the type of construction 4 Mortar or gypsum 5 Stone wool with wired mat on one side density 66 kg m 6 Duct Used materials example 5 Isover Ultimate Protect SLAB 4 0 th 80 mm ALU1 The materials for stuffing box fire protection mastic lining and insulation materials can be replaced by another approved fire sealing system with equivalent properties The maximum distance of the...

Страница 34: ...rotect SLAB 4 0 th 80 mm ALU1 The materials for stuffing box fire protection mastic lining and insulation materials can be replaced by another approved fire sealing system with equivalent properties The maximum distance of the fire damper from the structure is not limited and according to EN 15882 2 the required number of suspensions acc to EN 1366 1 2014 must be used The duct at the point of pene...

Страница 35: ...pends on the distance of the flap from the construction when the maximum distance from the construct is not limited and according to EN 15882 2 must use the required number of hinges according to EN 1366 1 2014 Reinforcement fixing VRM see Fig 81 Installation of profile U25x40x25 see Fig 82 When using Rockwool Conlit Ductrock EIS 120 th 60 mm the overall fire resistance of the EIS 120 can be achie...

Страница 36: ...struction Fig 38 Solid ceiling construction mortar or gypsum EIS 120 EIS 90 75 Position 1 Fire damper 2 Solid ceiling construction 3 Mortar or gypsum min 110 Concrete min 125 Aerated concrete 4 Duct Around the perimeter Shown schemes of incorporation and damper are illustrative only ...

Страница 37: ... 60 mm Flange to flange connection Up to 4 dampers can be installed Shown schemes of incorporation and damper are illustrative only The gap 67 mm between dampers can be filled by mineral stone wool min density 140 kg m Wool is fixed to damper body by fire protection mastic 67 67 75 B 75 67 67 75 B 75 The gap 67 mm between dampers can be filled by mineral stone wool min density 140 kg m Wool is fix...

Страница 38: ...ess 1 mm 5 Cement lime plate min thickness 15 mm min density 870 kg m 6 Duct Used materials example 3 Promapyr Rockwool Steprock HD Hilti CFS CT B 1S 140 50 4 Promastop P K Hilti CFS CT 5 Promatect H Fire resistant insulation and fire resistant board can be replaced by another approved fire sealing system for damper installation with equivalent material properties The damper must be anchored to th...

Страница 39: ... Concrete min 125 Aerated concrete 1 Fire damper 2 Solid ceiling construction 3 Fire resistant board 4 Fire stop coating thickness 1 mm 5 Duct Used materials example 3 Hilti CFS CT B 1S 140 50 4 Hilti CFS CT Fire resistant insulation and fire resistant board can be replaced by another approved fire sealing system for damper installation with equivalent material properties ...

Страница 40: ...m the construction when the maximum distance from the construct is not limited and according to EN 15882 2 must use the required number of hinges according to EN 1366 1 2014 Reinforcement fixing VRM see Fig 81 Installation of profile U25x40x25 see Fig 82 When using Rockwool Conlit Ductrock EIS 120 th 60 mm the overall fire resistance of the EIS 120 can be achieved T thickness of the insulation mm ...

Страница 41: ...43 Outside solid ceiling construction Concrete EIS 90 750 30 100 75 100 100 Position min 110 Concrete min 125 Aerated concrete 1 Fire damper Around the perimeter 2 Solid ceiling construction 3 Concrete B20 4 Rebar 5 Duct Shown schemes of incorporation and damper are illustrative only Rebar Steel wire Ø 6 mm ...

Страница 42: ... necessary to use reinforcement VRM Fig 44 Fixing of reinforcement to damper body VRM Important For lower resistance that EI90 the reinforcement VRM is not necessary 1 Insert part A into reinforcement VRM 2 Set up nut of the part A under correct hole 3 Lock screw B 3 It has to be done on each corner of VRM Shown dampers are illustrative only ...

Страница 43: ...o make changes Fig 45 Installation procedure 70 1 Cut the groove for profil U25x40x25 2 Insert profile into groove 3 Fix profile 4 Fix second layer of insulation 27 max 350 75 Screw 4 2x50 Installation details see chapter 9 4 Shown schemes of incorporation and damper are illustrative only ...

Страница 44: ... anchor Hingeplates Load capacities of threaded hanger rods F N at the required resistance 90 minutes Size As mm Weigh G kg for 1 piece for 1 pair M8 366 22 44 M10 58 35 70 M12 84 3 52 104 M14 115 70 140 M16 157 96 192 M18 192 117 234 M20 245 150 300 Position 1 Threaded rod M8 M20 2 Nut 3 Washer 4 Coupling Nut 5 Anchor 6 Hinge plate min thickness 10 mm ...

Страница 45: ...ons to the damper body is absolutely excluded Back to back air conditioning piping must be hung or supported so as all load transfer from the back to back piping to the damper is absolutely excluded Threaded rods longer than 1 5 m require fire resistant insulation Threaded rod fixing to the ceiling construction Fig 47 Suspension horizontal duct Shown schemes of incorporation and damper are illustr...

Страница 46: ...air conditioning piping must be hung or supported so as all load transfer from the back to back piping to the damper is absolutely excluded Threaded rods longer than 1 5 m require fire resistant insulation Fig 48 Suspension vertical duct Actuating mechanism is placed above the ceiling construction Actuating mechanism is placed under the ceiling construction Shown schemes of incorporation and dampe...

Страница 47: ... excluded Threaded rods longer than 1 5 m require fire resistant insulation If the threaded rod is located inside the duct insulation distance between threaded rod and duct is max 30 mm If the treaded rod is located outside the duct isolation distance between threaded rod and isolation is max 40 mm Thickness of the insulation under mounting profile must be min 30 mm Threaded rod fixing to the ceil...

Страница 48: ...essure loss calculation 9 2 Determination of pressure loss by using diagram Diagram 9 2 1 Pressure losses for air density pressure loss air flow speed in nominal damper section air density coefficient of local pressure loss for the nominal damper section see Tab 10 1 1 ...

Страница 49: ...49 NORDfire FDMQ Images are for illustrative purposes We reserve the right to make changes 10 Coefficient of local pressure loss 10 1 Coefficient of local pressure loss Tab 10 1 1 Coefficient of local pressure loss ...

Страница 50: ...r A v m s 2 3 4 5 6 7 8 9 10 11 12 dB 15 0 11 8 9 8 8 4 7 3 6 4 5 7 5 0 4 5 4 0 3 6 level of acoustic output corrected with filter A level of acoustic output related to the 1 m section see Tab 11 3 1 duct cross section correction to the weight filter A viz Tab 11 3 4 level of acoustic output corrected with filter A level of acoustic output related to the 1 m section see Tab 11 3 1 duct cross secti...

Страница 51: ... 316 316L EN 17346 17349 The respective stainless steel is the material for all components present or accessing the damper interior components outside the damper body are typically from galvanised sheet met al fasteners for mounting the servo drive or mechanics mechanics components except Item 4 frame components The following components including the fasteners are made from stainless steel at all ...

Страница 52: ...pecified in the purchase order the handover of the dampers to the forwarder shall be understood as reception 14 2 The dampers must be stored in covered buildings in an environment without aggressive vapours gases and dust A temperature in a range of 5 C and 40 C and a relative humidity of max 80 must be maintained in the buildings For handling during storage the dampers must be pro tected against ...

Страница 53: ... the respective operation documentation of the damper record books of the damper fire logs etc and subsequently adequate function checks must be carried out 16 5 For a reliable function of the dampers their closing mechanism and the seating faces of the blade must be protected from dust fibrous or adhesive masses and solvents 16 6 Control of actuating mechanism without electric voltage You can set...

Страница 54: ...on put the rubber cap back tightly to cover the empty hole 17 2 Before entering the dampers with manual control design 01 11 80 into operation after their assembly and by sequential checks and following checks must be carried out Verification of closing device and thermal fuse When you verify functionality of mechanism follow these steps Adjustment of damper blade in position CLOSED shall be made ...

Страница 55: ...cks of the fire dampers at least 1x a year 17 6 For the function checks the dampers should be moved to CLOSED position with the fan off or with closed regulation valve situated between the fan and the fire damper 18 Spare parts 18 1 Spare parts are supplied only on basis of an order 18 2 Control for square damper and round damper is identical 19 Restore function of actuating mechanism after fuses ...

Страница 56: ... AC DC 24 V with thermoelectric activation mechanism ATEX zone 1 2 42 With actuating mechanism BF 24 TN BFL BFN 24 T voltage AC DC 24 V 50 Manual and thermal with two terminal switches OPEN CLOSED 80 20 2 Reinforcement damper placement outside wall or ceiling construction 21 Data label 21 1 Data label is placed on the damper body Data label is placed on the damper body WEIGHT kg Dobříšská 550 267 ...

Страница 57: ...72 680 7360 info etsnord ee www etsnord ee ETS NORD Finland Address Pakkasraitti 4 04360 Tuusula Finland Phone 358 0401 842 842 info etsnord fi www etsnord fi ETS NORD Sweden Address Järsjögatan 7 69235 Kumla Sweden Phone 46 707 80 50 16 info etsnord se www etsnord se ...

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