CR2. Circular fire damper C1-C 04/2010

Transcription

1 Rf-Technologies nv - Lange Ambachtstraat Oosterzele - België - Tel Fax info@rft.be

2 Table of contents o n t e n t s Pr o d u c t p r e s e n tat i o n Ra n g e...2 Fi r e classification Ap p rova l s a n d t e s t r e p o r t s Op e r at i n g m e c h a n i s m s...3 Di m e n s i o n s...5 St o r i n g a n d h a n d l i n g In s ta l l at i o n...6 El e c t r i c a l c o n n e c t i o n s...8 Op e r at i o n...10 Ma i n t e n a n c e...11 Ev o l u t i o n k i t s...12 Te c h n i c a l d ata...14 We i g h t s Se l e c t i o n Gr a p h Pr e s s u r e l o s s c o e f f i c i e n t Se l e c t i o n d ata o r r e c t i o n f a c t o r l Sa m p l e o r d e r...20 Pr o d u c t p r e s e n tat i o n s are installed in ventilation ducts passing through a construction element in order to stop the propagation of fire. They dispose of a modular operating mechanism positionned completely outside the wall. The circular fire damper has a fire resistance up to 120'. The refractory casing is made out of galvanised steel. This fire damper is especially designed for larger diameters up to 630 mm. The fire damper can be equipped with a common fusible link mechanism, up to a motorized mechanism. Tested according to the European standard EN at 500Pa Minimal pressure drop Air tightness according to the European standard EN 1751 class B (class on request) Suitable for mounting in rigid wall/floor and flexible wall ( ex: metal stud+ gypsum plasterboard) Operating mechanism completely outside the wall Easy to install Maintenance free For interior applications 1. Refractory casing ( made out of galvanised steel) 2. Damper blade 3. Operating mechanism 4. Sealing cold smoke 5. Blade bumper 6. Intumescent strip 7. Fusible link Rubber sealing ring fig. + FTH Ra n g e ØDn(mm)

3 Fire classification according to : 2005 EI 120 S EI 90 S EI 60 S Rigid wall oncrete wall 100mm (v e i o) till Ø 630 (500 Pa) till Ø 630 (500 Pa) till Ø 630 (500 Pa) Rigid floor oncrete floor 150mm (h o i o) oncrete floor 125mm (h o i o) till Ø 630 (500 Pa) till Ø 630 (500 Pa) till Ø 630 (500 Pa) till Ø 630 (500 Pa) till Ø 630 (500 Pa) Flexible wall Metal stud wall 100mm (v e i o) till Ø 630 (300 Pa) till Ø 630 (500 Pa) v e = damper mounted directly in the wall E = integrity h o = damper mounted directly in a floor/ceiling I = thermal insulation i o = fire can come from either direction S = smoke leakage Pa = Pascal Approvals and test reports All our dampers are submitted to a number of tests by official test institutes. Reports of these tests form the basis for the approvals of our dampers. Europe : lassification report according to EN : 2005 France : -approval : 05/14 Sweden : Sitac -approval : 0548 Finland : STF-approval : YM231/2006 Switzerland : VKF-approval : Seco : All our dampers are periodically audited by an external 'third party' according to the European FP regulations (Factory Production ontrol) ISO : ertification: ISO 9001:2008 Operating mechanisms FTH: operating mechanism with fusible link The operating mechanism FTH automatically unlocks the blade when the temperature in the duct exceeds 72. The damper needs to be rearmed manually. Standard: Options: Fusible link 72 Manual unlocking possible Manual rearmation, use the enclosed key (turn clockwise) IP42 FU: Unipolar end of range switch FU/DU : Unipolar end- and beginning of range switches FB/DB : Bipolar end- and beginning of range switches fig. + FTH 3

4 MA: Upgradable automatic / remote controlled operating mechanism with fusible link The operating mechanism MA automatically unlocks the blade when the temperature in the duct exceeds 72. It can also close the damper by sending an electrical impulse (VD) or by interrupting the power supply (VM) to the magnet. Manual or motorized rearmation (ME MA) Standard: Fusible link 72 Manual unlocking possible Manual rearmation, use a key 13 mm (turn clockwise) IP42 Options: Remote controlled by means of a magnet 24/48V Type of magnets: VD = natural magnet VM = electromagnet FDU : Unipolar beginning and end of range switches FDB : Bipolar beginning and end of range switches fig. + MA DB : spring-return actuator DBT : spring-return actuator with thermo-electric fuse When connected to the power supply, the actuator moves the blade into it's standby position (open). When the power is interrupted, an internal armed spring closes the blade (safety position). If the motor is equipped with a thermo-electric fuse DBT, this will interrupt the power supply when the temperature in the duct exceeds 72. Standard Options Thermo-electric fuse 72 for DBT Motorized unlocking and rearmation Manual rearmation possible, use the enclosed key (turn clockwise) 24V or 230V Integrated end- and beginning of range switches IP 54 BSL module for bus network, only for DBT24 fig. + DB BLF : spring-return actuator for Ø 400mm BF : spring-return actuator for Ø > 400mm BLFT : spring-return actuator with thermo-electric fuse for Ø 400mm BFT : spring-return actuator with thermo-electric fuse for Ø > 400mm When connected to the power supply, the actuator moves the blade into it's standby position (open). When the power is interrupted, an internal armed spring closes the blade (safety position). If the motor is equipped with a thermo-electric fuse BFT/BLFT, this will interrupt the power supply when the temperature in the duct exceeds 72. Standard: Options: Thermo-electric fuse 72 for BFT/BLFT Motorized unlocking and rearmation Manual rearmation possible, use the enclosed key (turn clockwise) 24V or 230V Integrated end- and beginning of range switches IP 54 SN2 Bipolar end- and beginning of range switches ST Plug TL: Topline module for bus network, only for BFT24 fig. + BLFT 4

5 Di m e n s i o n s Dn 315mm Dn < 315mm x 375 Ø Dn + 62,5 P P Z Øn-2 50 Q Q Z y y = Dn/2-132mm The damper blade exceeds the tunnel as from D n 250mm y = Dn/2-253mm The damper blade exceeds the tunnel as from D n 560mm FTH MA BLF(T) BF(T) DB(T) P Q Z FTH MA BLF(T) BF(T) DB(T) P Q Z Variants for RVF: Round recuction piece for connection to a duct with a smaller diameter than the diameter of the damper. Delivered per piece. ØD RVF Ø L I RVF BM Ød-2 l L Storing and handling As the fire damper is a safety element it needs to be stored and handled with caution. Attention: Avoid any kind of damage Avoid contact with water Avoid deformation of the casing during the installation and sealing It is recommended: to unload in a dry area to avoid heavy shocks not to rotate the damper while moving it not to use the damper as a scaffold, working table, etc. not to store smaller dampers inside larger ones 5

6 In s ta l l at i o n The damper can be mounted with the axis in every position The damper has to be installed in conformity with the test report Avoid obstruction of adjoining ducts Position axis The fire damper is always tested in standardized supporting constructions (standard rigid wall/floor as well as standard flexible wall) according to NBN EN : 1999 table 3/4/5 'standarized supporting constructions'. The achieved results are valid for similar supporting constructions with a thickness and/or density equal to or bigger than the supporting construction used during the test. Examples of similar supporting constructions aerated concrete wall 100mm + density 550 kg/m³ + fire resistance 120' aerated concrete floor 150 mm + density 650 kg/m³ + fire resistance 120' - 240' flexible wall: metal stud + gypsum plasterboard: 100mm + fire resistance 60' masonry in hollow or full bricks, reinforced concrete, aerated concrete, light concrete,... concrete elements, pre-stressed concrete,... metal stud + Rf-boards, several layers of gypsum cardboard Installation in rigid wall, floor and ceiling The damper was tested in a concrete wall of 100mm as well as in an aerated concrete floor with a thickness of 150&125mm. S 2. Mount the damper in the opening. The damper needs to exceed the wall/ floor/ceiling by 230 mm on the side of the mechanism. As the mechanism needs to be accesible at all times, you need to provide a free working space of min. 200 mm. If the mechanism is not accesible you need to provide an inspection shutter (e.g. false ceiling). 3. The joint S between the damper and the wall/floor/ceiling needs to be filled right across the width of the wall with a standard concrete mortar. 4. heck the mobility of the damper blade. 5. Run a test on the mechanism of the fire damper. min. 100 Mortar S n-2 n+50 Mortar S S 230 min Dn+50 fig. Application in rigid wall fig. Application in rigid floor/ceiling 6

7 Installation in flexible wall - Metal stud gypsum plasterboard wall The damper was tested in a metal stud gypsum plasterboard wall with a minimum fire resistance of 60' and a thickness of 100mm. A metal stud gypsum plasterboard wall consists of: A metal framework made out of horizontal and vertical metal studs (min. width 50 mm) Stonewool with a thickness of 40 mm and a density of 40 km/m³ between the boards Double boarding: two standard gypsum boards on both sides 50 min. ( n+50) 1. Provide a minimal installation opening in the wall = (Ø n +50)mm x (Ø n +50) mm + horizontal reinforcements. 2. Attach two standard gypsum boards with a thickness of 12,5 mm at one side of the metal stud wall. Insulate the wall between the metal studs. 3. Finish with two standard gypsum boards. 4. Attach the lower coverplate with chipboard screws. 5. Mount the damper in the wall. 6. Attach the upper coverplate and the damper with chipboard screws. 7. Fill the joint S between the damper and the wall completely with stonewool through the backside of the wall (min.density 40 kg/m³). 8. Attach the two coverplates at the backside with chipboard screws. 9.heck the mobility of the damper blade. 10. Run a test on the mechanism of the fire damper. S n-2 ( n+50) 230 S min 100 fig. application flexible wall metal stud gypsum plasterboard - 7

8 Electrical connectors Wiring diagrams: DU FU DB FB ME DU FU DB FB V D 48 V D + - Fig. FTH 24/48 V D +/- 10% 24/48 V A +/- 10% Fig. MA (+ME) Technical data: FTH MA Power supply FTH n.a. Power supply magnet MA Rearmation motor (ME): 24VA/24VD/48VA/48VD Magnet: 24VD or 48 VD Power consumption n.a. n.a. Power consumption Rearmation motor (ME): 24V : Pmax = 20W 48V : Pmax = 40W n.a. Power: VM: Pnom = 1,5W VD: Pmax = 3,5W Position switches Standard: 1mA...6A, D 5V...A 250V Position switches Standard: 1mA...1A, D 5V...A 48V Running time motor: n.a. spring: 1s Noise level n.a. Degree of protection IP 42 Running time motor: <30s spring: 1s Noise level motor: max 50 db (A) Degree of protection IP 42 8

9 Wiring diagrams: ME FU DU <5 <80 ME FU DU <5 <80 ME ST 1.72 FU DU <5 > S1 S2 S3 S4 S5 S S1 S2 S3 S4 S5 S ST 1.72 with thermostat 24VA 24VD 230VA Fig. BLF(T) 24VA 24VD 230VA Fig. BF(T) 24 VA +/- 20% 24 VD +/- 20% 230 VA +/- 10% 3 4 ST 1.72 without thermostat Fig. DB(T) Technical data: BLF(T) Power supply BLF(T) BLF(T)24: 24VA/24VD BLF(T)230: 230VA Power consumption BLF(T)24: motoring: 5W holding: 2,5W BF(T) Power supply BF(T) BF(T)24: 24VA/24VD BF(T)230: 230VA Power consumption BF(T)24: motoring: 7W holding: 2W DB(T) Power supply DB(T) DB(T)24: A24V, 50/60Hz/D24V DB(T)230: A230V, 50/60HZ Power consumption DB(T)24: motoring: 10W holding: 4W BLF(T)230: motoring: 6W holding: 3W BF(T)230: motoring: 8W holding: 3W DB(T)230: motoring: 8W holding: 4,5W Position switches Standard: 1mA...3A, D 5V...A 250V SN2: 1mA...3A, D 5V...A 250V Running time motor: 140s spring-return : 20s Noise level motor: max 45 db (A) spring: ca. 62 db (A) Degree of protection IP 54 Position switches Standard: 1mA...6A, D 5V...A 250V SN2: 1mA...6A, D 5V...A 250V Running time motor: 140s spring-return: 16s Noise level motor: max 45 db (A) spring : ca. 62 db (A) Degree of protection IP 54 Position switches Standard: 3A (1,5mA), A 230V Running time motor: s spring-return: 10s Noise level max 50 db (A) Degree of protection IP 54 lassification of the abbreviations VA= Alternative current V= Volt P nom = Nominal capacity VD= ontinuous current W= Watt P max = Maximal capacity 9

10 Operation 1. FTH: Simple operating mechanism with fusible link Manual rearmation: Use the enclosed Hex key and turn clockwise (2) Manual unlocking: Use the unlocking button (1) Automatic unlocking: When the fusible link melts at Fig. FTH 2. MA EVO: Upgradable remote controlled operating mechanism Manual rearmation (Standard Mano Evo): Turn 90 with a Torcq key 13 mm (1) 1 Motorized rearmation (Kit ME MA): 1. Switch off the power supply for at least 10 sec. 2. Supply the actuator for at least 30sec. (respect the prescribed voltage). 3. The rearmation stops automatically when detecting a torque > 20 Nm! Switch off the power supply after rearmation! Switch off the power supply for at least 15 sec. in between each rearmation cycle. Automatic unlocking (Standard Mano Evo): When the fusible link melts at 72 Manual unlocking (Standard Mano Evo): Use the white unlocking button (2) Remote controlled unlocking: (KIT VM/VD MAN EVO FDU) By sending an electrical impulse (VD) or by interrupting the power supply (VM) to the magnet. 2 Fig. MA EVO 10

11 3. B(L)F(T) - DB (T) Manual rearmation: 1. To manually rearm use the enclosed handle BLFT(T) => Turn clockwise BFT(T) => Turn anti-clockwise DB(T) => Push + turn anti-clockwise 2. To block the motor turn back a quarter of a turn Manual unlocking: 1. To unlock the motor, use the enclosed handle BLFT(T) => Turn 1/4 clockwise BFT(T) => Turn 1/4 anti-clockwise DB(T) => Push + turn 1/4 anti-clockwise AUTION! =>! Do not use a drill or screwing machine =>! Stop as soon as the motor is completely rearmed (end of range) Fig. BLF Motorized rearmation: 1. Switch off the power supply for at least 10 sec. 2. Supply the actuator (respect the prescribed voltage) for at least 180 sec. (DB)/ 140 sec. (BF)/ 75 sec. (BLF). 3. The rearmation stops automatically: - when the end of range is reached (damper open), it takes about 75 sec. to arm the damper - the power supply is interrupted Remote controlled unlocking: By interrupting the power supply Automatic unlocking: As soon as the temperature exceeds 72 (Types B(L)FT & DBT) =>! The thermo-electric fuse will not interrupt the power supply after manual rearmation. Fig. DB Ma i n t e n a n c e - No specific maintenance required - Schedule at least one running check each year - Remove dust and all other particles before start-up - Honour the maintenance regulations according to S

12 Ev o l u t i o n -k i t s KITS FTH Unlocking mechanism FTH with FU but without FTH 72 KITS FD FTH 1 End or beginning of range switch FU/DU/FB/DB KITS FTH 72 Fusible link FTH 72 KITS MA EVO Upgradable operating mechanism MA with fusible link 72 KITS FDU MAN Unipolar end and beginning of range switches FDU KITS FDB MAN Bipolar end and beginning of range switches FDB KITS ME MA Rearmation motor ME 24V-48V KITS FT72 MA EVO Fusible link FTH 72 KITS MAN EVO VD24 FDU KITS MAN EVO VM24 FDU KITS MAN EVO VD48 FDU KITS MAN EVO VM48 FDU Magnet VD24/48, VM24/48 with FDU 12

13 KITS BLF 24 KITS BLF 230 KITS BLF 24-ST Actuator Belimo BLF 24V/230V or BLF 24V with plug, without thermo-electric fuse (T) KITS BLFT 24 KITS BLFT 230 KITS BLFT 24-ST Actuator Belimo BLF 24V/230V or BLF 24V, with plug (ST) and thermo-electric fuse (T) KITS SN2 BLF Bipolar end and beginning of range switches FB and DB for BLF actuator KITS BAE 72 Thermo-electric fuse (T) Belimo 72 for BLFT 24V actuator KITS BF 24 KITS BF 230 KITS BF 24-ST Actuator Belimo BF 24V/230V or BF 24V with plug (ST), without thermoelectric fuse (T). KITS BFT 24 KITS BFT 230 KITS BFT 24-ST Actuator BF 24V/230V or BF 24V, with plug (ST) and thermo-electric fuse (T) KITS SN2 BF Bipolar end and beginning of range switches FB and DB for BF actuator KITS BAE 72 Thermo-electric fuse 72 (T) for Belimo BFT 24V KITS DB 24 KITS DB 230 Actuator Joventa DB 24V/230V without thermo-electric fuse (T) KITS DBT 24 KITS DBT 230 Actuator Joventa DB 24V/230V with thermo-electric fuse (T) KITS ST 1.72 Thermo-electric fuse 72 (T) for Joventa DB 13

14 Technical data Operating mechanism FTH MA Description Automatic fire damper Upgradable automatic and remote controlled fire damper ertifications lassification Fire resistance (pressure during test 500 Pa): - EI120 (v e i o) S : range up toø 630: Mounting in rigid wall 100mm - EI60 (v e i o) S : range up toø 630: Mounting in flexible wall 60' 100mm - EI120 (h o i o) S : range up to Ø 630: Mounting in rigid floor/ceiling 150mm Durability test After 150 cycles the characteristics stay within the declared limit values After 300 cycles the characteristics stay within the declared limit values. Safety position losed losed Operation Automatically: By melting the thermo-electric fuse at 72 Automatically: By melting the thermo-electric fuse at 72. Remote controlled: By sending an electrical impulse (VD) or by interrupting (VM) the power supply to the magnet Rearmation Manual Manual Remote controlled (ME) Unlocking old unlocking possible old unlocking possible Functioning Without external energy Without external energy Installation direction From either way From either way Airmovement Random Random Fireside Random Random Operating pressure Max 500 Pa Max 500 Pa Ambient temperature* Max 50 Max 50 Environment* For internal use For internal use Nominal voltage n.a. ME: A24V, 50/60Hz, D 24V Position indication Mechanically by means of an arrow option: FU/DU/FB/DB Mechanically by means of an arrow Options: FDU / FDB Degree of protection IP42 IP42 Maintenance Maintenance-free Maintenance-free * Not a part of the essential certified characteristics of the -label The -label guarantees: - The conformity with the standard S Parts 1 & 5: Systèmes de Sécurité Incendie Dispositifs Actionnés de Sécurité - The conformity with the national decree of march 22, The values of the characteristics mentioned in this document ertifying organization: AFR ertification 11 Rue Francis de Pressensé F93571 La Plaine Saint-Denis edex 14

15 Operating mechanism BLF(T) BF(T) DB(T) Description Remote controlled damper with spring-return actuator Remote controlled damper with spring-return actuator Remote controlled damper with spring-return actuator ertifications lassification Fire resistance (pressure during test 500 Pa): - EI120 (v e i o) S : range up to Ø 630: Mounting in rigid wall 100 mm - EI60 (v e i o) S : range up to Ø 630: Mounting in flexible wall 60' 100 mm - EI120 (h o i o) S : range up to Ø 630: Mounting in rigid floor/ceiling 150 mm Durability test After cycles the characteristics stay within the declared limit values After cycles the characteristics stay within the declared limit values After cycles the characteristics stay within the declared limit values Safety position losed losed losed Operation Automatically: (only BLFTversions) by melting the thermo-electric fuse at 72. Remote controlled by interrupting the power supply Automatically: (only BFTversions) by melting the thermo-electric fuse at 72. Remote controlled by interrupting the power supply Automatically: (only DBTversions) by melting the thermo-electric fuse at 72. Remote controlled by interrupting the power supply Rearmation Manual Remote controlled Manual Remote controlled Manual Remote controlled Unlocking old unlocking possible old unlocking possible old unlocking possible Functioning Without external energy Without external energy Without external energy Installation direction From either way From either way From either way Airmovement Random Random Random Fireside Random Random Random Operating pressure Max 500 Pa Max 500 Pa Max 500 Pa Ambient temperature Max 50 Max 50 Max 50 Environment For internal use For internal use For internal use Nominal voltage BLF(T)24: A24V, 50/60Hz, D 24V BLF(T) 230: A 230V, 50/60Hz BF(T)24: A24V, 50/60H, D 24V BF(T) 230: A 230V, 50/60Hz DB(T)24: A24V, 50/60Hz, D 24V DB(T) 230: A 230V, 50/60Hz Position indication Mechanically by means of an arrow Mechanically by means of an arrow Mechanically by means of an arrow standard: FDU option: SN2 standard: FDU option: SN2 Degree of protection IP54 IP54 IP54 standard: FDU Maintenance Maintenance-free Maintenance-free Maintenance-free 15

16 We i g h t s Weight + FTH [kg] ØD n (mm) kg Weight R2 + MA EVO (automatic mechanism) ØD n (mm) kg Weight + B(L)FT ØD n (mm) kg Selection graph p[pa] D n [mm] L WA [db(a)] v[m/s] 16

17 Pressure loss coefficient ζ [-] Dn [mm] ζ [-] 7,42 3,96 2,17 1,62 1,21 0,92 0,72 0,56 0,46 p = v² x 0,6 x ζ q v = A q = Air flow in the duct [m³/h] p = Static pressure drop [Pa] ζ = Pressure loss coefficient zeta [-] A = internal surface of the duct [m²] v = Air speed in the duct [m/s] L WA = A-weighted sound power level D n = Nominale diameter of the damper Elaborated examples: Data: Dn = 350mm v = 4 m/s Required: p = ca. 21 Pa cfr. selection graph L WA = ca. 47 db(a) alculation: p = (4m/s)² x 0,6 x 2.17 = 20.83Pa Elaborated example of a pressure drop calculation p with air speed v = 4m/s Dn [mm] p [Pa] 71,23 38,02 20,83 15,55 11,62 8,83 6,91 5,38 4,42 Elaborated example of a pressure drop calculation p with air speed v = 4m/s Dn [mm] p [Pa] 218,15 116,42 63,80 47,63 35,57 27,05 21,17 16,46 13,52 17

18 Selection data A-weighted sound power level L WA of 45dB(A) in the duct Dn [mm] Sn [m²] 0, , , , , , , , ,24742 Sn [%] 41,54 51,89 60,94 64,99 68,67 71,94 74,60 77,19 79,62 Q [m³/h] p [Pa] Sn = Free air passage Q = Air flow p = Pressure drop Every air flow lower than the above mentioned maximum value, will meet the listed A-weighted sound power level 45dB(A), for the respective dimension. A-weighted sound power level L WA of 40dB(A) in the duct Dn [mm] Sn [m²] 0, , , , , , , , ,24742 Sn [%] 41,54 51,89 60,94 64,99 68,67 71,94 74,60 77,19 79,62 Q [m³/h] p [Pa] Sn = Free air passage Q = Air flow p = Pressure drop Every air flow lower than the above mentioned maximum value, will meet the listed A-weighted sound power level 40dB(A), for the respective dimension. A-weighted sound power level L WA of 35dB(A) in the duct Dn [mm] Sn [m²] 0, , , , , , , , ,24742 Sn [%] 41,54 51,89 60,94 64,99 68,67 71,94 74,60 77,19 79,62 Q [m³/h] p [Pa] Sn = Free air passage Q = Air flow p = Pressure drop Every air flow lower than the above mentioned maximum value, will meet the listed A-weighted sound power level 35dB(A), for the respective dimension. 18

19 A-weighted sound power level L WA of 30dB(A) in the duct Dn [mm] Sn [m²] 0, , , , , , , , ,24742 Sn [%] 41,54 51,89 60,94 64,99 68,67 71,94 74,60 77,19 79,62 Q [m³/h] p [Pa] Sn = Free air passage Q = Air flow p = Pressure drop Every air flow lower than the above mentioned maximum value, will meet the listed A-weighted sound power level 30dB(A), for the respective dimension. A-weighted sound power level L WA of 25dB(A) in the duct Dn [mm] Sn [m²] 0, , , , , , , , ,24742 Sn [%] 41,54 51,89 60,94 64,99 68,67 71,94 74,60 77,19 79,62 Q [m³/h] p [Pa] Sn = Free air passage Q = Air flow p = Pressure drop Every air flow lower than the above mentioned maximum value, will meet the listed A-weighted sound power level 25dB(A), for the respective dimension. o r r e c t i o n f a c t o r L To obtain the sound power level for the L W oct octave midband L WA = A-weighted sound power level L = orrection factor L W oct = Sound power level for each octave midband L W oct = L + L WA [Hz] m/s m/s m/s Deduct L WA from the selection graph on p

20 Sample order Sample order = 450 MAN0 VM48 ME FDB Type of damper 2 Diameter of damper 3 4 Type of mechanism: - type of magnet ( for MA) - voltage ( for magnet and motor) Options: - rearmation motor ME - unipolar/ bipolar contacts If the damper is manipulated in any other way than described in this manual, Rf-Technologies will decline any responsibility and the guarantee will immediately expire 20