Duct Smoke Detector KRM®-DZ • DIBt approval No. Z-78.6-200 for control of fire/smoke protection flaps Modbus Oppermann Regelgeräte GmbH Z-78.6-200 VdS Technical Data • VdS certification (G210148) • Patented single tube air sampling system • Contamination display in % and signalling at 70 % • Electronic air flow control • Externally operable reset button in the housing • Remote reset option via terminals • Long service life, alarm threshold tracking • Annual service interval • Bus interface RS485 (-MOD / -BAC only) Sensor: Scattering RM 3.3 (ALK-E) Supply voltage KRM-1-DZ/KRM-1-DZ-MOD/KRM-1-DZ-BAC: 230 V AC ± 10 %, 50 / 60 Hz Supply voltage KRM-2/KRM-2-MOD/KRM-2-BAC: 24 V AC (16 – 27,6 V AC) or 24 V DC (21,6 – 27,6 V DC) Rated current: KRM-1-DZ/KRM-1-DZ-MOD/KRM-1-DZ-BAC: Mounting bracket: KS (for insulated / circular ducts) 30 mA KS-WDG (for insulated / circular ducts in KRM-2/KRM-2-MOD/KRM-2-BAC: combination with WDG) 140 mA Housing: WDG – waterresistant housing for Relay outputs:floating outdoor installation and increasing Alarm relay locked: 1 changeover contact, 8 A, protection class to IP65 250 V AC or 24 V DC 1 NC, 8 A, 250 V AC or 24 V DC Contamination relay: 1 NC contact, 6 A, 250 V AC or 24 V DC System failure relay: 1 NC contact, 6 A, 250 V AC or 24 V DC The KRM-DZ duct smoke detector is designed for smoke Air flow relay: 1 NC contact, 6 A, 250 V AC or 24 V DC detection in ventilation ducts. It constitutes a combination of a Operating temperature: -20° C – +50° C smoke detector with an adapter system, whose measuring tube Permissible flow: 1 – 20 m/s and housing have been specially adapted for optimal air flow Permissible humidity: 10-95% non-condensing through the smoke detector. Protection class: IP54, IP65 with WDG The air duct sampling tube transports the air within the air Approvals/ Tested: DIBt approval, Z-78.6-200 duct along the entire length of the tube, through the sensing VdS certfication G210148 chamber and back into the air duct. Upon detection of smoke, according to FprEN54-27 the sensor reacts immediately and triggers an alarm. Over time, LED display: % contamination level flashes at > 70 % the sensor becomes contaminated. Because of alarm threshold LED in housing: greenoperating tracking, the sensitivity up to total pollution remains the same. blue lack of air flow At 70 % contamination, the sensor indicates contamination. If yellow failure, electronics, the sensor is not replaced the smoke alarm is triggered at 99 % smoke detector defective, contamination. The contamination level is indication in a two low voltage line LED display; at 70 % it flashes and the relay “contamination” red smoke alarm, including drops. contamination > 99 %, To monitor operability, the device is equipped with electronic flashes at attempts to release air flow monitoring, which lights a blue LED at < 1 m/s. The fai when the sensing chamber is lure LED illuminates when the smoke sensor or the electronics not empty are defective, as well as the absence of a smoke sensor. Adapter housing:ABS The smoke alarm must be released with the reset button or a Air measuring tube: Aluminium / plastic malfunction. A functionality test is also possible with the same shortest length 160 mm button. standard length 600 mm The operation functions like a smoke alarm. Furthermore, the Dimensions: approx. 257 x 166 x 77 mm (L x W x H) same function takes place on restart or when the bridge circuit Screw connection: 3 x M16 between terminals 9 and 10 is opened (remote release). Accessories Function Fire Protection | Data sheet No. 41302 | Version 08-2015_1 | 1 | 12 Duct Smoke Detector KRM-DZ 14 11 9 13 10 12 1 Adapter plate with gasket 2 Patented measuring tube (max. length 3 m) 3 End cap 4 Rubber bushing (only for insulated or circular ducts) 5 Lower housing with seal 6 Electronics 7 Optical smoke sensor 8 Upper casing with seal 9 Red LED: alarm / reset button 10 Yellow LED: failure 11 LED display: % of sensor contamination 12 Green LED: in operation 13 Blue LED: air flow under 1 m / s 14 Opening for test gas 15 Air duct Electrical connection KRM-1-DZ / KRM-1-DZ-MOD / KRM-1-DZ-BAC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Power supply 230 V ~ 50 – 60 Hz green Power supply 230 V AC Bus B Bus B Bus A KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC Power supply 24 V AC / DC RS 485 (informative) Bus A Test/Reset (NC contact) Test / Reset (NC contact) Test/Reset Smoke alarm red Smoke alarm Service signal Contamination Service signal system failure Service signal air flow yellow blue 1 2 3 4 5 6 7 8 Bus B Bus B Bus A RS 485 (informative) Bus A 9 10 11 12 13 14 15 16 17 18 19 20 21 KRM-1-DZ-MOD green Power supply 24 V AC/DC Test/Reset Smoke alarm red Smoke alarm Service signal Contamination Service signal system failure yellow Service signal air flow blue KRM-2-DZ-MOD All contact depictions are with the power off (alarm) / no air flow present / Contamination> 70%. For wiring, see next page. Remote reset/test (terminal 9 +10): if bridge circuit is removed, a floating NC contact must be connected. Notes: The floating switching contacts (terminals 11 – 17) are to be assigned as uniformly as possible to an installation category according to EN 60730-1. These switching contacts are only to be used for 230 V AC or 24 V AC/DC, no combinations are permitted unless at least one contact between the potentials remains unassigned. A mixed connection of safety extra-low voltage (SELV) and low voltage must not occur. The assembly may only be operated on one mains phase. The voltage / safeguard activation is to be provided on site. KRM-1-xx (230 V versions) with a fuse of 16 A; KRM-2-xx (24 V version) with 4 A. T3+T4 Programming the Bus address for MOD / BAC versions: Press buttons T3+T4 on the circuit board (to the right, next to the display) at the same time, so that the display changes from contamination level to show the bus address (the display will flash). Press button T3 or T4 to adjust the desired address (1 – 99) and confirm with simultaneous pressing of T3 and T4. A device return automatically follows after 3 seconds without pressing a key. Note the separate documentation for setting the baud rate (BAC version only) 2 | 12 | Fire Protection | Data sheet No. 41302 | Version 08-2015_1 Duct Smoke Detector KRM-DZ Wiring diagram, fire protection flap/smoke protection flap Valid with software 0020 All contact depictions in the following images are with the power off (alarm)/ with no airflow. No liability assumed for layout examples shown. KRM-1-DZ/KRM-1-DZ-MOD/KRM-1-DZ-BAC: connection to BSK/RSK 230 V AC Wiring layout example Supply of the fire/smoke protection flap can also take place on site Alternatively the fire/smoke protection flap can also run over terminal 14 + 15. Terminal 9 + 10 (NC contact for external button) KRM-1-DZ/KRM-1-DZ-MOD/KRM-1-DZ-BAC: Connecting fire/smoke protection flap with on site power supply Wiring layout example for fire/smoke protection flap Identical wiring of the fire/smoke protection flap is also possible with KRM-2-DZ or KRM-2-DZ-BAC or KRM-2-DZ-MOD Alternatively the fire/smoke protection flap can also run over terminal 14 + 15. Terminal 9 + 10 (NC contact for external button) Fire Protection | Data sheet No. 41302 | Version 08-2015_1 | 3 | 12 Duct Smoke Detector KRM-DZ KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC: connecting fire/smoke protection flap 24 V BSK / RSK 24 V Power supply NT01-24V-AC and NT02-24V-DC or SM 24 V AC/DC power supply 1 2 3 4 M Open Signalization Closed Individual contacts e. g. fan shut-off, BMS alert BSK fire protection flap RSK smoke protection flap 24 V AC /DC Power supply 24 V AC /DC green 9 Test/Reset (NC contact) 10 Test/Reset 11 Smoke alarm 12 13 red 14 Smoke alarm 15 Service signal 16 contamination 17 Service signal 18 System failure yellow 19 20 21 Service signal air flow Wiring layout example with fire/ smoke protection flap power supply via the KRM. Alternatively the fire/smoke protection flap can be supplied on site through an external source. Terminal 9 + 10 (NC contact for external button) blue KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC: Connecting fire/smoke protection flap with on site power supply Power supply NT01-24V-AC and NT02-24V-DC or SM 24 V AC/DC power supply 24 V * e. g. 230 V AC on BSK/RSK 230 V AC M Open Signalization Closed BSK fire protection flap RSK smoke protection flap 24 V AC oder DC Individual contacts e. g. fan shut-off, BMS alert 1 2 3 4 Power supply 24 V AC /DC green 9 Test/Reset (NC contact) 10 Test/Reset 11 Smoke alarm 12 13 red 14 Smoke alarm 15 Service signal 16 contamination 17 Service signal 18 System failure yellow 19 20 21 Service signal air flow blue KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC Or alternatively fire/smoke protection flap (BSK/RSK) 230 V AC * Secure on-site power supply 4 | 12 | Fire Protection | Data sheet No. 41302 | Version 08-2015_1 Wiring layout example for fire/smoke protection flap. Alternatively the fire/smoke protection flap can also run over terminal 14 + 15. Terminal 9 + 10 (NC contact for external button) Duct Smoke Detector KRM-DZ Display and operation for Duct Smoke Detector KRM® LED Smoke alarm (red) LED Smoke alarm (red) Display indicator (contamination in % or status) LED Failure (yellow) LED Power supply (green) LED Alarm (red) and Alarm / reset button LED Air flow (blue) lights up when there is insufficient flow Failure reset: Briefly press button and release Alarm reset: Press button for at least 2 seconds until the red LED goes out Display Meaning Start / calibration Comments Shortly after starting the software version is displayed (4 digits), e. g. 00 then 20 = Software 0020. With BAC versions „bA“ is diplayed. Thereafter, the rotating segment display follows at startup or after a power failure. Contamination in % Flashes starting at 70 % (relay contamination drops out); at 99 % with display LED alarm. Failure e. g. Missing smoke detector, disrupted communication with the smoke detector, processor failure. Failure LED & alarm LED light up at the same time. Troubleshooting: Change the detector and confirm by pressing the alarm / reset button. Confirmation reset / new start If alarm / reset button is pressed for more than 8 seconds, or if bridge circuit / terminal 9 / 10 is open (missing bridge circuit or remote reset). Display goes out after releasing the alarm / reset button or closing the bridge circuit between terminal 9 + 10. 00 – 99 + all LEDs on the circuit board light up 00 – 99 flashing BUS address Display only with MOD/BAC versions after pressing the address buttons T3 / T4 directly on the circuit board. Fire Protection | Data sheet No. 41302 | Version 08-2015_1 | 5 | 12 Duct Smoke Detector KRM-DZ LEDs Alarm / reset (red) Failure (yellow) Meaning Comments Smoke alarm or failure Reset after failure: Briefly press alarm / reset button. KRM immediately restarts. Reset after alarm: Press and hold the alarm / reset button for at least 2 seconds until the red alarm LED in the button goes out. Do not release it until then. KRM will start again only after release. As long as the alarm / reset LED flashes when the button is pressed, the smoke sensor is still filled with test gas / test spray / smoke, and can not be reset. In that case blow the sensor out or wait. Defective circuit board or missing Check / replace circuit board or smoke detector RM 3.3 (ALK-E). smoke alarm Smoke alarm Smoke alarm Red LEDs directly on the smoke detector RM 3.3 (ALK-E). or contamination LEDs permanently on until reset has taken place. (2 x red) 99 % Power (green) Supply voltage is on Green LED lights up if supply voltage is on. Air flow (blue) Air flow is too low Blue LED lights up when air flow is too low and air relay (only equipped on DIBt versions) drops out. Check smoke detector position in the duct, check sampling tube (TurboTube) for contamination / clean if necessary. Behavior of the alarm relay and fault relay and displays, plus reset options Valid with software 0020 Smoke alarm Device failure / missing detector… DIBt versions KRM-1-DZ / KRM-1-DZ-MOD / KRM-1-DZ-BAC / KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC KRM-1 / KRM-1-MOD / KRM-1-BAC / KRM-2 / KRM-2-MOD / KRM-2-BAC DIBt versions KRM-1-DZ / KRM-1-DZ-MOD / KRM-1-DZ-BAC / KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC KRM-1 / KRM-1-MOD / KRM-1-BAC / KRM-2 / KRM-2-MOD / KRM-2-BAC Alarm relay 11 / 12 / 13 Drops out Drops out Drops out Drops out Alarm relay 14 / 15 Drops out Drops out Drops out Drops out LED Alarm / Reset Lights up Lights up Lights up Lights up Failure relay 18 / 19 Does not drop out --------Not equipped Drops out --------Not equipped LED failure Does not light up Does not light up Lights up Lights up Alarm reset or failure reset Not with power interruption! It is mandatory to use the alarm button or terminal 9 / 10 provided that sensing chamber is free. With power interruption, alarm button or with terminal 9 / 10 provided that sensing chamber is free. Not with power interruption! It is mandatory to use the alarm button or terminal 9 / 10 provided that sensing chamber is free + disturbance has ceased. With power interruption, alarm button or with terminal 9 / 10 provided that sensing chamber is free + disturbance has ceased. Installation instructions and positioning The KRM is to be positioned in accordance with the current local state regulations on ventilation systems. Reliable smoke detection must be guaranteed. Depending on the cross section of the ventilation duct the air collecting tube may be cut to a length of 160 mm. This minimum length of 160 mm must not be undercut. This way, up to <100 mm Ø can be monitored in conjunction with the KS mounting bracket. With respect to the maximum 6 | 12 | Fire Protection | Data sheet No. 41302 | Version 08-2015_1 width/ maximum height/ maximum diameter of the air ventilation ducts to be monitored with the 600mm long standard air collecting tube, there are no limitations according to the VdS approval / DIBt certification. The airflow direction must be observed during the installation of the air collecting adapter. The air collecting tube may be mounted laterally below or above the air duct – the location is arbitrary. Duct Smoke Detector KRM-DZ In the ideal case, install the KRM when structurally possible, where flow meters, etc. are normally attached, so there is a laminar airflow along the measuring tube. We recommend that the KRM be fitted and installed at the same distance from heating, cooling and humidity devices as flow sensors. The distance of the KRM to fittings, valves, filters, etc. in terms of flow direction should be 3 times, and in the diagonal direction 5 times that of the cross-section, if this structurally possible. The KRM including the air collecting tube may not be installed along the longitudinal edges of ventilation ducts (corner area). The KRM is to be installed so that the air collecting tube is constantly in the air stream. In horizontal ventilation ducts the KRM including air collecting tube should be installed in the upper third of the ventilation ducts or at the top of the ventilation ducts, if this is structurally possible. reliable smoke detection/flow is ensured. The blue LED “Airflow” may be used as an indicator of a sufficient flow (the LED is off with sufficient flow). Follow these instructions. All work (such as installation, electrical connection, start-up, operation and maintenance), must be carried out by sufficiently qualified craftsman. Current local rules and regulations (e.g. building regulations, elecrical/VDE guidelines, etc.) are to be observed. Installers and operators are required to be adequately informed before operation. Read the product description before device start-up. Make sure that the product is fully suited to the respective applications. We assume no liability for misprints and changes after printing. Compliance with operating and installation instructions is also included within the regulations of intended use. We assume no liability for damages caused by improper use. Operating licenses and guarantees and all warranty claims will be voided in the event of unauthorized modifications or any tampering with the device. When, for structural reasons, the recommended positioning is not possible, the KRM is to be mounted so that, nonetheless, a Example of positioning after the change of air duct direction. (Recommendation) 5 dh Example of positioning after air outlets. (Recommendation) Air outlet 5 dh 3 dh Hydraulic diameter dh Rectangular duct Round duct d h=D Where there are large temperature differences, outdoors for example, or in places that are dependent on outside temperature (roof, attic), the air duct smoke sensor has to be insulated. For this Oppermann Regelgeräte provides a special splash-proof housing (WDG). d h= øD H 2xHxW H+W W Example of positioning (Recommendation) MIN 3xd h MIN 5xd h KRM MIN 3xd h KRM MIN 5xd h KRM KRM Ventilator MIN 3xd h MIN 5xd h KRM Airflap MIN 3xd h MIN 5xd h KRM KRM KRM Battery Muffler MIN 5xd h Change in air duct direction MIN 3xd h MIN 3xd h KRM MIN 3xd h KRM KRM MIN 3xd h MIN 5xd h MIN 5xd h Air duct forking KRM KRM KRM MIN 5xd h KRM Air duct narrowing/ Air duct enlargement KRM MIN 5xd h Exhaust air Supply air Air duct device Fire Protection | Data sheet No. 41302 | Version 08-2015_1 | 7 | 12 Duct Smoke Detector KRM-DZ Installation min. 160 mm 1. Drill a hole 43 – 44 mm in diameter at the intended mounting location. Note: Installation of the TurboTube measuring tube is possible either from the top, bottom or side of the channel for all duct cross-sections (for round ducts as well). Attention: Operation without end plug not permitted. 2. • Determine how long the measuring tube must be. • If necessary, shorten the tube. Minimum length 160 mm. • Deburr the cutting face and put the end plug back on up to the stop collar. Note: Depending on delivery batch, either the transparent end caps displayed here or black end caps with a slightly different geometry will be included in the delivery. 3. • Determine the direction of flow and fit the adapter plate so that • the line on the adapter plate under the text ”Strömungsrichtung” is parallel to the flow direction. Four self-tapping screws serve for attaching it to the sheet metal duct (not included in delivery). Mounting bracket 4. Installation on a rectangular air duct • see picture at right 5. Installation on a circular air duct • For mounting on a circular air duct use mounting bracket type KS and the rubber bushing . Thanks to the bend perforations they can be adapted to a round duct. Rubber bushing inner outer The type KS mounting bracket is supplied flat. Mounting bracket 6. Installation on air ducts with insulation • Use the rubber bushing and insert it into the Ø 43 – 44 mm opening in the air duct. • Install the mounting bracket. • Insert the assembled adapter plate into the measuring tube by sliding the measuring tube through the grommet, and screw the adapter plate onto the mounting bracket using the 4 self-tapping screws. Then the insulation can be installed. 7. Installation outdoors or in a cold environment • As protection for smoke detectors which are exposed to the open air or in a cold environment there is a special WDG type splash-proof housing. This enclosure prevents the warm air in the smoke detector duct from condensing. The interior of the housing is insulated with foam rubber. 8 | 12 | Fire Protection | Data sheet No. 41302 | Version 08-2015_1 Insulation Duct Smoke Detector KRM-DZ Application example: 8. Installing the housing with the sensor • Attach the housing bottom part with the electronics and sensor to the • • • • • adapter plate. The housing can be attached at increments of 90°. The direction of the housing has no effect on the measurement result. You can align the housing with the sensor optimally. Check that the seals in the housing upper part are correctly positioned. By snapping on and tightening the upper housing and then firmly pressing down on the arrow marked on the central cable area (to ensure that the catch at the lower end of the housing snaps in correctly), the mounting is complete. Wire the unit according to the applicable circuit diagram. Attention: wiring and electrical connections may only be carried out by a qualified electrician. Make sure that all cables are connected by a properly qualified electrician. The cable jacket for field wire connecting must be done as near as possible to the terminal block. For wires longer than 10 mm, the wire must be fixed by a cable clip near the terminal block or insulated in pairs with a suitably protective tube (see application example). 9. Testing the duct smoke sensor • After completing the installation work, doing proper wiring (please • • • note the separate data sheets / circuit diagrams) and applying power, the duct smoke sensor is operational. The green LED (12) illuminates. By pressing the alarm / reset button (9), an initial simple functional test can be made. All LEDs must light up and all the relays drop out. The units connected to the relays are activated! The display (11) indicates the current degree of sensor contamination. If the button is released, all LEDs will go out except for LED (12) which shows the supply voltage, and the relays activate. To test the smoke detector, we first recommend opening the case, remove the front cover and spray directly with Oppermann Test Spray. This is the simplest method. Alternatively, there is a test port (14) in the center of the transparent cover. Here, the test spray tube must be fully inserted into the opening (with this method, the tube is placed permanently into the port), and release as much test gas as needed until the smoke detector responds. Insert the test spray‘s tube fully into the test opening (appx. 1.5mm deep) and release as much test gas as needed until the smoke sensor activates. Please do not spray too much, otherwise the smoke sensor may display a higher degree of contamination at the next start / reset. The alarm / reset button lights up, the relays drop out. The electronics are on alert and locked. To release, the alarm / reset button must be pressed. At the time of the reset, the sensor must be free of smoke and test gas. Should there still be test gas in the chamber a higher degree of contamination will appear. In this case, after some time perform a reset by disconnecting from the power or by an external reset, or if necessary, remove the housing cover and blow out the smoke detector. To activate the test with smoke spray remove housing shell. Alternatively, use the test port. 10. Final review • Are all screws tight? • Is the adapter plate properly mounted for the flow direction? • Are all seals in the correct position? • In operation, when air flow > 1 m / s the blue LED may not light up. Fire Protection | Data sheet No. 41302 | Version 08-2015_1 | 9 | 12 Duct Smoke Detector KRM-DZ Maintenance and repair 1. Instructions for operation and maintenance The operator is responsible for the safe function of the ventilation system. He has to ensure that the smoke sensors are always ready for operation and that they are maintained, including all controlling components and systems. In order to ensure good performance over a longer period of time the smoke alarms must be tested at least once a year. Without maintenance, and depending on environmental conditions, the sensor will become dirty sooner or later, and after a certain time will trigger an alarm, which is a false alarm. All types will give a specific maintenance requirement signal at a contamination level of 70 % (display flashes, relay contamination drops out). Targeted maintenance can be carried out since the smoke detector is equipped with a 2-digit digital contamination indicator. From a 70 % contamination level or higher the smoke sensor must be changed. There is a contact available for this “contamination” signal, and it should be connected to the automation station. Caution: Before opening the housing, unlock all supply voltages – The housing may only be opened by a qualified electrician. Supply and switching voltages must be observed. Please note the symbols on the device: Caution voltage Before working on equipment, turn voltage off Please follow the instructions The following work is required and can only be carried out by us or by our authorized experts: 1. The smoke detector is accessible by removing the cover. 2. Maintenance and repair work Before starting with the maintenance work, the functional integrity of the unit when it is exposed to smoke must be clarified with the staff. If, due to operational specifications shortterm shutdowns cannot be tolerated, measures must be taken to prevent this; if necessary by placing a bridge over the alarm contact, but remembering to remove it after completion of the service work. After maintenance work, a complete functionality test of all plant parts must be carried out. If defects have appeared they must be removed immediately. A protocol must be made after all maintenance work and the results are to be written into the operation manual, which is to be signed by the operator in charge. 2. By turning the white detector on the base by about 20° to the left the sensor can be unscrewed. If it is too dirty (indicator >70 %), and no later than the prescribed standard of exchange cycles, the sensor must be removed and exchanged for a new sensor. 3. Also to be cleaned: • the cover • the TurboTube measuring tube • the inner housing 4. Check the electrical connections, possibly tightening the terminals. Make visual inspection and clean the electrical circuit board if necessary, as well as the inner housing. Check all seals. 5. Assemble all parts 6. Test system by triggering the smoke detector with Oppermann Test Spray. 10 | 12 | Fire Protection | Data sheet No. 41302 | Version 08-2015_1 Duct Smoke Detector KRM-DZ 7. Check with the operator about the function of the downstream systems and components, such as: • Turning off of fans • Closing of flaps • Notification to the building automation system • When checking network failure and recovery, does the sensor return to its normal function and does it unlock again from the state ”smoke alarm” and return to its normal 3. For DIBt approved smoke sensors type KRM-1-DZ / KRM-1-DZ-MOD/ KRM-1-DZ-BAC / KRM-2-DZ / KRM-2-DZ-MOD / KRM-2-DZ-BAC the following additional work is necessary 1. Check airflow monitoring. If the flow rate falls below 1.0 m / s, the blue LED illuminates. Air stream relay (terminal 20 / 21) must open. If this is not the case, the KRM needs to be moved to another location with sufficient flow. 2. Check system failure. With the removal of the smoke sensor in the event and defective electronics, the failure relay drops off,and the yellow light comes on. The control panel relay (terminal 18 / 19) must open. At the same time both alarm relays (terminals 14/15 and 11/13) must drop off and the red LED alarm light comes on. 3. Check the working coordination of all components with a functional test. This is part of the building inspection approval. By triggering the smoke sensor with our test spray the two red LEDs light up, and on the circuit board the LED ”alarm / reset” lights up in red as well. Relay and changeover smoke alarm (terminals 14 / 15 and 11 / 13) must open. The BSK closes by spring return. function when there is no longer any present? • Release is possible by pressing the reset button (types: • KRM-1-DZ, KRM-1-DZ-MOD, KRM-1-DZ-BAC, KRM-2-DZ, KRM-2-DZ-MOD and KRM-2-DZ-BAC) or with brief power interruptions (only for types KRM-1, KRM-1-MOD, KRM-1-BAC, KRM-2, KRM-2-MOD and KRM-2-BAC). Release and approve for operation. 5. Malfunctions should be eliminated immediately. 6. Register the results of the maintenance in an operations manual. The KRM’s general technical approval is to be noted The KRM must bring the fire or smoke protection flaps to the designated safety position (ON) in the following cases. • When smoke is detected by the smoke detector • In case of failure by the smoke detector unit (e. g. wire breakage, missing smoke detectors, short-circuit) • In case of power failure • With restoration of power supply after previously occurring release (smoke detection and/or fault) • Upon activation of the Alarm/RESET button in the smoke detection unit • When exceeding the optical smoke detector’s permissible degree of contamination (99 %) After a power failure and subsequent restoration of the power supply and without the previous occurring release (smoke detection and/or fault), the approved device returns to a ready state. With the approved device, the fire or smoke protection flaps, whose maximal connection does not exceed the maximal load of the floating contact of the smoke detection systems, can be controlled, and released. 4. Checking the operation after power failure: After power failure and recovery the smoke sensor is set back into its state before the power failure. Both states; “normal operation” and “smoke alarm” are to be checked after disconnection from the power supply. The reset can only be made after the failure and / or alarm has been corrected. Fire Protection | Data sheet No. 41302 | Version 08-2015_1 | 11 | 12 Duct Smoke Detector KRM-DZ Dimensions 166 24 233 233 166 24 77 70 37.3 40 70 37.3 40 L= min. 160 mm L= min. 160 mm Dimensions in mm 50 50 Oppermann Regelgeräte GmbH | Im Spitzhau 1 | 70771 Leinfelden-Echterdingen, Germany Phone +49 711 72723560 | Fax +49 711 7280527 | firstname.lastname@example.org | www.oppermann-regelgeraete.de 12 | 12 | Fire Protection | Data sheet No. 41302 | Version 08-2015_1 Subject to change.
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