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Contents
1. 26 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 3 Commissioning Summary This chapter provides information to commission the detection system Content Introduction 28 Precommissioning preparation 28 Commissioning checklist 28 Acclimation period 29 Transport time verification 29 Gross smoke test 29 Wire burner tests 30 LaserSense Nano Aspirating Smoke Detector Installers Handbook 27 Chapter 3 Commissioning Introduction This chapter covers the commissioning procedures for the detector Commissioning strategy initially depends upon the environment in which the detector is installed For instance the test for a computer room in a relatively clean environment would be very different from say a flour mill with a high level of airborne particulate content A widely accepted standard for computer rooms or EDP areas is British Standard BS6266 equipment overheating at a stage well before combustion To perform the test electrically overload a 1 metre length of PVC insulated wire of 10 0 1mm gauge for one minute using an appropriate power supply The detector has two minutes from the end of the wire burn to give an alarm indication For areas with higher levels of background particulate matter testing methodology would be similar to that of standard point detectors Commissioning should only be done by factory trained technicians in accordance with applicable standards Precommissioning prepar2. Troubleshooting on page 33 Failure to properly maintain the system may affect the functioning of the system Scheduled maintenance The scheduled maintenance of the system should be performed at an established interval The interval between performance of maintenance procedures should not exceed any imposed regulations See NFPA 72 or other local requirements Local standards and specification requirements must be adhered to A typical maintenance plan is listed in Table 6 below Notes It is prudent to disconnect or isolate the detector from the fire panel during maintenance to prevent unintentional alarm activations The detector should be powered down during internal cleaning use an air duster can or dry air gun Table 6 Maintenance plan Step Procedure 1 Check detector wiring and pipework for damage 2 Check original design is still valid e g changes due to building upgrades 3 Check detector for contamination and clean if necessary 4 Check maintenance logs for issues and rectify as appropriate 5 Check transport times against original records significant increases or decreases in transport times may imply damaged pipes or sampling holes that need clearing Isolate detector from fire panel if required Smoke test to check detector operation and Alarm relay connection Simulate a fault to check the Fault relay and connection Complete and file maintenance records gt OD NS OD 0 Reconnect detector to fire pan
3. results for each pipe View gt Results show calculations for each sampling hole on the pipe with the nearest to the detector at the top of the screen and the endcap hole at the bottom The classification of each sampling device configuration and associated sensitivity settings are determined by the column headed Hole sensitivity obs m which shows the predicted sensitivity for each hole For the installation to comply with EN 54 20 depending on the class of installation each sampling hole must be no less sensitive than the following Class A 0 80 obs m Class B 1 66 obs m Class C 7 54 obs m The calculation can be further refined by leaving a working detector in the protected area for at least 24 hours at the intended alarm factor for the installation this could be done before or after installation The detector sensitivity can be read from the Sensitivity figure on the histogram screen of the Remote software supplied with each detector Click Options gt Calculation options to open the Hole calculation options dialog box Enter the sensitivity value obtained from the practical test and then click OK The new calculated value will use the real sensitivity from the practical test The PipeCAD software will determine the classification of any used configuration Commissioning and periodic system tests must involve smoke tests to verify that the system performs as expected and enters Fire 1 alarm within the time determined by PipeCA
4. 3 Chapter 1 Product and component descriptions Indicators Figure 1 below shows the indicators on the detector Figure 1 External components 8 1 Alarm Illuminates to indicate that the smoke level has passed the detector s Fire 1 threshold and the normally open ALARM relay contacts have closed S Pre Alarm Illuminates to indicate that the smoke level has passed the detector s Pre Alarm threshold and the normally open PRE ALARM relay contacts have closed RR ow wm Fault Illuminates to indicate a fault condition and that the normally closed FAULT relay contacts have opened Three additional LEDs indicate the type of fault If the Fault LED is illuminated but none of the additional LEDs are lit it indicates a problem with the power supply if its fault output is connected to the detector s INPUT terminals and DIP switch 7 is set to OFF its default position Alternatively this can happen if the INPUT terminals are left open circuit and DIP switch 7 is OFF 4 OK Illuminates to confirm normal operation During initial setup the OK LED will flash for 15 minutes while the detector learns its operating environment This does not indicate a problem with the detector 5 Flow Illuminates to indicate an airflow fault This may be due to blocked or broken pipes although it can also occur if for example factory warehouse doors are opened on a windy day a large pressure change occurs or if indust
5. EDWARDS LaserSense Nano Aspirating Smoke Detector Installers Handbook P N 9 14564 EN REV 02 ISS 11ABR13 Copyright Manufacturer Certification Contact information O 2013 UTC Fire amp Security All rights reserved Kidde Products Limited Unit 2 Blair Way Dawdon Seaham County Durham SR7 7PP United Kingdom 0832 0832 CPD 1312 EN 54 20 2006 Aspirating smoke detectors for fire detection and fire alarm systems for buildings Class A B and C Technical data See INF48022 and INF48023 held by the manufacturer For contact information see www airsensetechnology com Content Important information ii Advisory messages iii EN 54 20 compliance iv Chapter 1 Product and component descriptions 1 Introduction 2 Available software for the detector 2 Specifications 3 Indicators 4 Chapter 2 Installation and configuration 7 Introduction 8 Antistatic precautions 8 System design 9 Installation 16 Configuration 23 Chapter 3 Commissioning 27 Introduction 28 Precommissioning preparation 28 Commissioning checklist 28 Chapter 4 Troubleshooting 33 Troubleshooting the detector 34 Chapter 5 Maintenance 37 Introduction 38 Scheduled maintenance 38 Maintenance procedures 39 Appendix A Communications card and APIC 43 Optional communications card 44 Optional APIC 47 Glossary 49 Index 51 LaserSense Nano Aspirating Smoke Detector Installers Handbook Important information Regulatory in
6. Smoke is produced from the overheated PVC insulation by evaporation and condensation of the plasticizer As the wire becomes hotter hydrogen chloride HCI gas is emitted from the insulation The by products of overheated PVC insulation can be detected by the Nano Wire burner Test 1 optional The following test is considered unlikely to produce hydrochloric acid vapor This test may be undertaken in underfloor spaces or ceiling voids 1 Connect a 6 5 foot 2 meter length of wire to a 6 VAC source of at least 16 Amps rating per wire for a period of 3 minutes 2 The system will respond within 120 seconds following de energization After this period very little smoke is given off Notes e The wire is subject to cooling if positioned in direct contact with air flows and may need to be shielded e The wire cross section should be American Wire Gauge AWG 10 with the following diameter and area Diameter 2 59 mm or 0 10189 in Cross Section Area 5 0 mm or 0 00775 in Wire burner Test 2 optional WARNING The following test is considered to produce sufficiently high temperature to generate small quantities of hydrogen chloride or hydrochloric acid gas Be sure to keep a safe distance away while voltage is being applied Caution A wire burner canned smoke test could activate spot type detectors This test may be undertaken in underfloor spaces or ceiling voids where rapid airflow may render Test 1 unsuitable 30 LaserS
7. This equipment is only to be used in accordance with these specifications Failure to operate the equipment as specified may cause damage to the unit injury or property damage Table 1 Specifications Specification Value SELV rating Supply Voltage Current consumption Electrical Safety Size Weight Operating temperature range Operating humidity range IP rating Sensitivity range obs ft obs m Maximum sensitivity resolution Detection principle Maximum number of sampling holes Maximum sampling pipe length Pipe inlets Alarm fault relays Relay contact rating changeover Programming PC interrogation APIC compatible EN 60950 Class III 21 60 to 26 40 UL rated 22 25 to 26 40 VDC 350 mA Complies with EN 610190 1 190 W x 230 H x 110 D mm 7 5 W x 9 0H x 4 3 D in 1 2 kg 2 65 Ibs 10 to 60 C EN 54 20 32 to 100 F 0 to 38 C UL 268 CAN ULC 8529 FM 0 to 90 relative humidity noncondensing EN 61010 1 Pollution degree 1 EN 61010 1 Installation category II IP50 Min 7 62 Max 0 122 FSD Min 25 Max 0 4 FSD 0 4 obs m 0 12 obs ft Laser light forward scattering mass detection Class A 2 Class B 4 Class C 10 50 m 164 ft 2 sampling and exhaust pipes Pre Alarm Alarm Fault 1 A at 24 VDC resistive load Internal DIP switches Via optional communications card Yes LaserSense Nano Aspirating Smoke Detector Installers Handbook
8. airflow and transport times are within the design of the detector The design parameters listed below must be adhered to for all pre engineered pipe designs Pre engineered piping networks should not exceed the transport time requirement of 120 seconds During the system test transport times are often less than 55 seconds e The maximum of three elbows and one pipe tee can be used in any pipe network design e When using a pipe tee it must be located within 20 feet of pipe from the detector e All capillary tubes will have a maximum length of 3 feet and use a 9 64 inch sampling hole size e The first sampling hole must be 10 feet or more from the detector e The use of sampling capillary tubes and sampling holes can be mixed in any combination on the pipe network e On branch designs the same number of sampling holes must be used on each branch Table 2 Sample pipe network parameters Total pipe Max amount Max sampling Sampling Capillary tube End cap length elbows points hole size sample hole size hole 164 feet 3 10 1 8 inch 9 64 inch 5 32 inch Note PipeCAD pipe modeling software is used to design pipe networks outside the above parameters Refer to the PipeCAD System Design and Installation User Manual for complete instructions The Nano detector employs a fan designed to detect smoke in relatively small areas The Nano detector is not intended to protect large areas or to sample from areas where there may be any diffe
9. are correctly connected before powering up by use of cable identifiers or electrical continuity checks Incorrect connection could damage the detector Ensure that cable of an appropriate approved type is used for interconnection Place sampling points so that the detector will be able to detect smoke at the earliest opportunity Ensure that the detector exhaust is in an area with the same atmospheric pressure as the sample pipes either by placing the detector physically in the protected area or by leading a pipe from the detector exhaust to the protected area Ensure that the environment of the protected area is within the environmental operating parameters of the detector Ensure the detector is properly grounded Don t Remove or connect boards when the detector is powered up Attempt to adjust or alter detector settings other than via the user programmable functions Any attempts to adjust the laser potentiometer are detectable and will void the warranty on the product Drop the detector or use excessive force when fitting sampling pipes as this may damage the detector Connect internal 0 volt terminals to local earth Use sampling pipe of less than 1 inch 27 mm outside diameter without a suitable 1 inch 27 mm pipe adapter It is important that there are no leaks where the pipe connects to the detector Place the detector so close to other equipment that there is insufficient room to access and change
10. check that the flow sensor for this pipe has been disabled Check that the low flow fault threshold is not set too high In the case of intermittent fault indications try increasing the flow fault delay time Check that the pipe is seated in the inlet and is not broken or cracked Check that installed pipework is fitted with endcaps PipeCAD pipe modeling software prompts for the use of appropriate endcaps Open bore pipes are not recommended Check that the high flow fault threshold is not set too low In the case of intermittent fault indications try increasing the flow fault delay time LaserSense Nano Aspirating Smoke Detector Installers Handbook 35 Chapter 4 Troubleshooting 36 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 5 Maintenance Summary This chapter provides scheduled and unscheduled maintenance procedures Content Introduction 38 Scheduled maintenance 38 Maintenance procedures 39 Visual check 39 Gross smoke test 39 Transport time verification test 39 Detector sensitivity test 39 Cleaning the detector 40 Replacing the dust separator cartridge 40 LaserSense Nano Aspirating Smoke Detector Installers Handbook 37 Chapter 5 Maintenance Introduction This chapter contains maintenance instructions for the detector system These procedures should be performed on a scheduled basis In the event that system problems are found during routine maintenance refer to Chapter 4
11. level Refer to the Remote Control Software manual for further details Note Changing the Alarm Factor starts a new FastLearn cycle during the initial 15 minute learning period the detector is incapable of reporting an alarm and will take 24 hours to achieve optimum performance based on the ambient conditions ClassiFire Selecting ClassiFire On allows the artificial intelligence system to continuously adjust alarm thresholds in order to avoid unwanted alarms from environmental changes recommended Note Disabling this feature means that nuisance alarms due to fluctuations in ambient pollution levels become more likely Fixed alarms Switches the artificial intelligence system off locking sensitivity to that set at initial setup This deactivates the dust filter monitoring system not recommended Note Enabling this feature means that nuisance alarms due to fluctuations in ambient pollution levels become more likely Flow limit offset Flow limit offset sets the sensitivity of the airflow monitoring system A small offset makes the system very sensitive to air flow changes EN 54 systems must react to 20 changes in airflow which equates to a change in flow sensor reading of 5 Areas with fluctuating air pressures may require a less sensitive setting Note Changing the flow limit offset starts a new flow calibration set up Flow delay Sets the time for which a flow fault must continue before a fault is signaled In
12. surface so that the enclosure will not twist and become damaged 6 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Summary This chapter provides information necessary to install and configure the detector system Content Introduction 8 Antistatic precautions 8 System design 9 Sample pipe networks 10 Air handling unit installation 10 Below or above the ceiling installations 11 Return air duct sampling method 13 Return air grill sampling method 15 Installation 16 Installation guidelines 16 Removing the front cover 17 Mechanical installation 17 Electrical installation 19 Configuration 23 Final installation 25 Removing the detector 25 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Introduction This chapter provides information necessary to install the Nano detector system Installation consists of the following steps 1 Unpack the shipping carton Ensure that the package contains product literature one ferrite ring and the detector 2 Determine the optimum location for the detector 3 Mount the detector into the selected location 4 Connect the detector to the sampling pipe network Installation should only be done by factory trained technicians Installation should be in accordance with applicable installation requirements These include e NFPA 70 National Electrical Code e NFPA 72 Nationa
13. the dust separator filter or access the RS 232 connector if installed Install the detector near high power RF sources or in damp or exposed areas Attempt to re use dust separator filter cartridges once removed Removing the front cover To remove the front cover unfasten the cover securing screw located on the bottom of the unit The cover may then be removed Mechanical installation Refer to Inside the detector on page 5 for conduit pipe interface information and mounting hole locations The detector is connected to the installed sampling pipework and fixed to the mounting surface using three screws of a type appropriate to the mounting surface Ensure that the sampling and exhaust pipes are securely seated in the pipe ports before securing If using a piped exhaust connection be sure that the sampling and exhaust pipe are fitted into the relevant port as shown in Figure 8 on page 18 LaserSense Nano Aspirating Smoke Detector Installers Handbook 17 Chapter 2 Installation and configuration Pipework Figure 8 Pipework 2 ALARM gt PRE ALARM CO FAULT 1 Sampling pipe 3 4 in pipe or 25 mm pipe with a 3 4 in sleeve adapter The maximum sampling pipe length is 50 m Fit an end cap with an approximately sized hole to optimize airflow through the pipe Exhaust pipe 3 4 in pipe or 25 mm pipe with a 3 4 in sleeve adapter If the protected area is at a lower atmospheric pressure than
14. the location in which the detector is installed e g a closed air conditioned room fit a return pipe run from the detector exhaust to the protected area in order to equalize the pressure This will improve detector response Even if the protected area and detector are at the same atmospheric pressure it is a good practice to fit a pipe stub with a bend to the exhaust to prevent debris from falling into the detector LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Electrical installation In keeping with good wiring practice keep cables and individual stripped conductors as short as possible while allowing stress relieving cable forming Power cables should be current rated at 1A or greater Signal cable should be 120 ohms or less twisted pair Figure 9 below shows the terminal block connections that connect the Nano detector to other electronic components It is recommended that all connection wires are marked with suitable identification labels or colored rings to aid in the connection process Figure 9 Electrical installation Zz O z gt o gt olJ o z v QO 3 z T aps olz Z lt Zz O nr z QO A O LNANI L amans a v 1 Power supply connections Connect to 24 VDC 1A PSU Do not connect OV to EARTH Use screened cable with screen connected to the detector EARTH terminal 2 Volt free relay contacts rated at 1A maximum at
15. 24 VDC All relay diagrams are shown in their contact states with the detector powered up and operating normally LaserSense Nano Aspirating Smoke Detector Installers Handbook 19 Chapter 2 Installation and configuration The Alarm and Pre Alarm contacts are connected as normally open and change state upon alarm conditions The NO NC normally open closed terminal legends for this relay refer to the contact state in the power off fault condition not to the normal operation condition Fault relay contacts will also change over on power down Use screened cable with screen connected to the detector EARTH terminal 3 Remote control input DIP Switch 7 OFF connect to PSU fault relay Normally Closed contacts for PSU monitoring Note The INPUT terminals are set by default to monitor the power supply If power supply monitoring and ClassiFire Override are not required fit a wire link across the two terminals to prevent a fault condition on power up DIP Switch 7 ON ClassiFire Override will reduce detector sensitivity by 50 while the input terminals are shorted together e g by a key switch Use screened cable with screen connected to the detector EARTH terminal External communications terminals Optional communications card fitted RS 485 serial communications mode Connect Command Module or detector RS 485 SenseNet serial bus to A and B Set communications card address switches to identify detector Use screened cab
16. D from the farthest hole The detector sensitivity must also be inspected to ensure it has not radically fallen from the installed figure If it has changed for any reason the new figure must be re entered into PipeCAD and the recalculated hole sensitivities must be confirmed to be within the class limits shown above iv LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 1 Product and component descriptions Summary This chapter provides descriptions of the detector features specifications and controls and indicators Content Introduction 2 Available software for the detector 2 Specifications 3 Indicators 4 Inside the detector 5 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 1 Product and component descriptions Introduction This aspirating detector is a highly sophisticated next generation high sensitivity aspirating smoke detection product that provides all the benefits of air sampling high sensitivity smoke detection including very early warning Designed for easy installation and commissioning the detector incorporates a patented artificial intelligence known as ClassiFire which allows the detector to configure itself to optimum sensitivity alarm thresholds and minimum nuisance alarms for various environments This detector operates by drawing air from a protected space via a supervised piping network in relatively small areas The sampled air is passed through a dust sepa
17. ampling point from the detector 2 Allow test smoke to enter pipe at the furthest sampling point 3 Record the amount of time for the detector to respond This is the actual maximum transport time This time must not exceed 120 seconds Gross smoke test The gross smoke test is a measurement of the amount of time elapsing from the activation of the smoke generating medium until PRE ALARM and ALARM states are reached This test should be repeated at least three times with consistent results The recommended smoke generating medium is canned smoke or a wire burner Smoke from a punk or cotton wick is also acceptable LaserSense Nano Aspirating Smoke Detector Installers Handbook 29 Chapter 3 Commissioning Caution Oil based canisters that are used to test point detectors are not suitable for testing aspirating systems as the particulate is heavy and tends to drop out in the pipe never actually reaching the detector Also the oily residue that is left behind may affect the functionality of the detector When using canned smoke introduce only enough smoke into the protected area to cause a FIRE condition This may require a number of practice sprays Follow the manufacturer s instructions Wire burner tests The wire burner test is considered the most representative test of incipient fire hazard detection in telecommunications or computer room environments The test is performed by applying a voltage to a piece of PVC insulated cable
18. ating Smoke Detector Installers Handbook 15 Chapter 2 Installation and configuration Installation Installation guidelines The following is a brief set of guidelines on installing detectors The detector should normally be mounted at a level where there is easy access The exhaust air from the unit must not be impeded in any way If the detector is mounted in a different air pressure from where the air is being sampled for example an air duct then a pipe must be routed from the exhaust port back to the same air pressure zone as the sampling holes All wiring must comply with NEC NFPA 70 CSA C22 1 local codes and standards and the requirements of the local AHJ All signal cables must be suitable for the application The detector must not be placed in areas where either the temperature or humidity is outside the specified operating range The detector should not be placed in close proximity to any equipment expected to generate high radio frequency levels such as radio alarms or units generating high levels of electrical energy Such as large electric motors or generators Table 3 on page 17 contains a list of procedural guidelines for installation of the Nano detector LaserSense Nano Aspirating Smoke Detector Installers Handbook Table 3 Procedural guidelines Chapter 2 Installation and configuration Do Ensure that the ClassiFire alarm factor is appropriately set Ensure that the power and signal cables
19. ation Commissioning should be performed after all construction has been completed and cleaned of any lingering post construction dirt If ambient monitoring conditions are recorded before the installation is cleaned up they may not accurately reflect actual normal operating conditions that need to be used as reference data for follow up maintenance procedures and tests Commissioning checklist The following brief checklist allows quick setup of the detector This procedure will be adequate for most standard installations Caution Ensure all wiring connections are checked prior to powering up the detector Incorrect wiring of the detector will cause permanent damage to the detector 1 Before powering up the detector visually check all cabling to ensure correct connection If wire identification is not immediately clear e g by use of different colored wires or wire identification sleeves an electrical check should be made 2 Disconnect the detector from the fire control unit if applicable 3 Power up the detector and wait for the 15 minute FastLearn cycle to finish The OK LED will be steadily lit when complete 28 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 3 Commissioning 4 The detector automatically performs a FastLearn cycle which takes approximately 15 minutes The OK indicator on the front panel will begin to flash When using day night switching check that day start and night start setti
20. be performed within one year of installation and every alternate year thereafter Example e Year one check e Year three check e If years one and three are OK go to five year interval The detector employs a self monitoring automatically adjusting calibration for the system The inspection only requires a periodic visual inspection for a detector fault indication and performing the detector sensitivity test function LaserSense Nano Aspirating Smoke Detector Installers Handbook 39 Chapter 5 Maintenance If the self monitoring feature of the system senses that the operation of the detector head is outside its normal range a trouble condition will be generated Cleaning the detector The exterior of the detector should be cleaned as necessary Clean the detector with a damp not wet cloth Caution Do not use solvents to clean the detector Use of solvents may cause damage to the detector Replacing the dust separator cartridge The only part that may require field replacement during servicing is the dust separator filter cartridge Its condition can be checked using the Dust Separator test in the Diagnostics menu of the Remote Control software or SenseNET software which gives a percentage reading of dust separator filter efficiency When this level drops to 80 the detector will signal a Separator Renew fault indicating that the dust separator cartridge needs to be replaced For more information refer to either the Remot
21. cal installation 19 Installation guidelines 16 Mechanical installation 17 Maintenance 39 LaserSense Nano Aspirating Smoke Detector Installers Handbook Replacing the dust separator filter 40 P Power supply connections 20 R Relay connections 21 Removing the detector 25 S Software Available software 2 Specifications 3 System design 9 Air handling unit installation 10 Below or above the ceiling installation 11 Return air duct sampling method 13 Return air grill sampling method 15 Sample pipe networks 10 T Testing Gross smoke test 29 Troubleshooting 34 W Wire burner tests 30 Wiring diagram 22 51 Index 52 LaserSense Nano Aspirating Smoke Detector Installers Handbook
22. cted area Check that the detector is not in demo mode This can be ascertained by viewing the event log and checking that the entry demo mode has a higher log entry number than the most recent FastLearn start and FastLearn end entries Note Remember that the log entries are in reverse order with the most recent entries appearing first If the log shows that demo mode was invoked during the last FastLearn period start a new FastLearn and allow it to complete its 24 hour cycle From the event log check that 24 hours have elapsed since the last FastLearn end entry Check that day night switchover times are appropriately set to reflect active and nonactive periods Elevated smoke Check that detector is not isolated or in FastLearn if Isolated the Fault levels do not light will be lit if in FastLearn the OK light will flash genere danne Check that the detector sampling points are in the smoke stream Check that sampling pipes are firmly and cleanly seated in their ports and undamaged Check that the correct ClassiFire alarm setting has been set Check that the detector has either had a 24 hour learning period or that it has been placed in demo mode Low mean output Check that the dust separator filter cartridge does not require changing and that the air plenum chamber is clean The chamber may become clogged when for example heavy building activity has occurred near the sampling pipes If so the chamber may require factory ser
23. cts Make all connections shown in Figure 11 on page 22 Input connection The Nano detector is fitted with an INPUT connection This provides an input which can be used to monitor the PSU or to desensitize the detector by using the day night feature DIP switch number 7 must be set as described in Figure 11 on page 22 The INPUT terminals on the detector circuit board are set by default to monitor the power supply If power supply monitoring and ClassiFire override are not required fit a wire link across the two terminals to prevent a fault condition on power up Make all connections shown in Figure 11 on page 22 LaserSense Nano Aspirating Smoke Detector Installers Handbook 21 Chapter 2 Installation and configuration Figure 11 Wiring diagram 1 24V gt QO e 3 Zz O oO o VYY 13 I O O OD 12 z O Zz A O QO Zz O 11 a Re op LD DO H H 9 10 NC Normally closed C Common NO Normally open 1 Detector Fire alarm control panel FACP Ground Power supply unit PSU Opens on power failure Short will indicate Alarm Short will indicate Pre Alarm PSU fault monitoring DIP switch 7 to OFF Key switch Short to reduce sensitivity by 50 DIP switch 7 set to ON Input FAULT PRE ALARM EOL resistor must be placed at last daisy chained detector ALARM 22 LaserSense Nan
24. ds should be employed to notify stoppage of airflow in the ducts LaserSense Nano Aspirating Smoke Detector Installers Handbook 13 Chapter 2 Installation and configuration e The exhaust air from the detector must be returned back to the duct using an exhaust port adapter and associated piping This requirement assures positive airflow through the detector e Locate sampling pipe in the main supply duct return side downstream of the filters and a minimum of six duct widths from any source of turbulence Such as bends inlets or deflection plates to reduce the effects of stratification In installations where the filter is capable of removing smoke install the sampling tube upstream of the filter Note Where it is physically impossible to locate the sampling pipe in accordance with this guideline the sampling pipe may be positioned closer than six duct widths but as far as possible from inlets bends or deflection plates e Locate the sampling pipe such that dampers do not restrict airflow at the sampling pipe e The sampling pipe should be located before air exhausts from the building or before diluting return air with outside air e For accurate identification of the source of an alarm locate sampling pipe as close as possible to the protected area s air entry into the duct system e Locate sampling pipe on the downstream side of the filter to sense fire in the filters Note If filters are blocked sufficient airflow may
25. e Control Software User Guide or SenseNET Software User Guide It is recommended that dust separators be changed at an interval of not more than 3 years After replacing the filter the detector must be put into FastLearn mode to reset the filter condition reading As dust contained in the dust separators may expose maintenance personnel to a nuisance dust hazard as defined by the Control of Substances Hazardous to Health COSHH it is strongly recommended that suitable masks and protective clothing be worn when changing filters Note Used dust separator cartridges are not intended for reuse and should be discarded To replace the cartridge 1 Remove power to the detector 2 Remove the front cover mounting screw securing the unit s front cover 3 With the front cover removed grasp the filter firmly and pull the filter out directly towards you 4 Properly dispose of the used cartridge 5 Locate the orientation markings on the new filter cartridge The word IN is marked on one side and the other is marked OUT 6 Insert the replacement filter cartridge so that the IN mark on the cartridge is on the left as viewed in Figure 13 on page 41 7 Slide the cartridge all the way into place 40 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 5 Maintenance 8 Replace the detector cover and secure it into place 9 Initiate a FastLearn routine by reenergizing the detector Figu
26. e messages advise you of the possible loss of time or effort They describe how to avoid the loss Notes are also used to point out important information that you should read Product Symbols This symbol appears on the main board of the unit and indicates that the board contains static sensitive components This label is located on the laser chamber at the bottom right of the open detector and signifies that the unit is a Class 1 Laser product as specified in IEC 60825 1 The unit incorporates a Class 3B embedded laser which must not be removed from the detector as retinal damage may result if the laser beam enters the eye This symbol indicates the Safety ground studs These are for grounding cable screens etc and should not be connected to OV or signal earth LaserSense Nano Aspirating Smoke Detector Installers Handbook iii EN 54 20 compliance The installation must be designed using PipeCAD software which is provided free on the CD shipped with each detector After designing the installation including pipes endcaps and sampling holes enter the detector type To select the detector type select Options select Calculation options and then select the detector from the Type drop down list Select Options gt Calculate or click on the calculator icon The software will prompt you to choose from Use set hole sizes Best flow balance or Max permissible transit time Select the appropriate option and then click OK The
27. el if required 38 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 5 Maintenance Maintenance procedures The following paragraphs outline general scheduled maintenance procedures to be performed on an as necessary basis Visual check The visual check must be performed every six months This check is to ensure pipe network integrity To perform the visual check observe the entire piping network and check for abnormalities in the pipes including any breaks blockages crimps etc Gross smoke test The gross smoke test is a Go No Go test which ensures that the detector responds to smoke This test must be performed at system commissioning and every year thereafter To perform this test smoke must be introduced into the last sampling hole in each branch of the pipe network and the proper response must be verified by the detector Smoke from a punk or cotton wick may be used Aerosol test smoke may also be used Note For cleanroom applications consult with supplier for gross smoke test methods Transport time verification test The maximum transport time of the pipe network must be measured and compared to the recorded transport time at commissioning Refer to Transport time verification on page 29 of this manual for test details The transport time verification test must be done at commissioning and every year thereafter Detector sensitivity test The detector sensitivity test must
28. ense Nano Aspirating Smoke Detector Installers Handbook Chapter 3 Commissioning 1 Connect a 3 25 foot 1 meter length of wire to a 6 VAC source of at least 16 Amps rating per wire for a period of 1 minute 2 The system will respond within 120 seconds following de energization After this period most of the insulation should be burned off Note The wire cross section should be American Wire Gauge AWG 10 with the following diameter and area Diameter 2 59 mm or 0 10189 in Cross section area 5 0 mm or 0 00775 in LaserSense Nano Aspirating Smoke Detector Installers Handbook 31 Chapter 3 Commissioning 32 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 4 Troubleshooting Summary This chapter provides information to troubleshoot the detection system Content Troubleshooting the detector 34 LaserSense Nano Aspirating Smoke Detector Installers Handbook 33 Chapter 4 Troubleshooting Troubleshooting the detector This chapter provides some possible solutions if a problem should occur with your detector Note Consult either the Remote Control Software User Guide or SenseNET Software User Guide for more information about the solutions or corrective actions discussed here Table 5 Troubleshooting guide Problem Solution Corrective Action Nuisance alarms Check that the ClassiFire alarm factor setting is appropriate for the normal occur too often working environment of the prote
29. et using the DIP switch located at the optional communication board The switch settings are up for 1 and down for 0 and the detector address is set as a 7 bit binary code switch 8 equates to a value of 128 and so is outside the usable address range Figure 16 shows an example where the address equates to 01100011 in binary or 1 x 1 1 x 2 0 x 4 0 x 8 Ox 16 1 x 32 1 x 64 0 x 128 99 LaserSense Nano Aspirating Smoke Detector Installers Handbook 45 Appendix A Communications card and APIC Figure 16 Sample DIP switch settings The full range of available addresses and their relevant switch settings are provided in Table 7 for reference Note Addresses chosen for detectors do not have to be consecutive or in a given order as long as they are all different Table 7 Address table METTET LEE RK a 46 LaserSense Nano Aspirating Smoke Detector Installers Handbook Appendix A Communications card and APIC meme 55 56 o e Jo i ii fo do Fi a NT ea a 7 Optional APIC When a command module is being used to manage one or more detectors the maximum limit is 127 an addressable protocol interface card APIC is required to decode detector status information in the command module and convey to the Fire Panel via the Addressable Bus 1 and Bus 2 terminal block connections see Electrical installation on page 19 for details In this configuration only one inter
30. face is required and all detector information is available through this interface one address per device Note Either an optional communication card or an APIC can be installed in the detector not both They are mounted the same and use the same connection on the detector main PCB APICs plug into the main PCB via a ribbon cable see Figure 14 on page 44 Once plugged in the addressable signaling line circuit SLC in and out are connected to the main PCB addressable bus terminals and the address DIP switches are set to the SLC address Refer to the APIC installation sheet for details LaserSense Nano Aspirating Smoke Detector Installers Handbook 47 Appendix A Communications card and APIC Note Some addressable protocols may limit the maximum number of device addresses to less than 127 Some protocols may not support all of the available alarm levels and fault reporting is usually a general fault with no detailed fault information 48 LaserSense Nano Aspirating Smoke Detector Installers Handbook Glossary C F AC ADA AH AHJ ARC AWG APIC CSFM DACT DC DET EOLD EOLR FM FSD HSSD Hz LCD LED MEA NAC N C NEC NFPA N O Degrees centigrade Degrees Fahrenheit Ampere Alternating current Americans with Disabilities Act Ampere hour Authority having jurisdiction Automatic release circuit American wire gauge Addressable protocol interface card California State Fire Marshal Digital alarm comm tra
31. figuration as shown in Figure 15 on page 45 44 LaserSense Nano Aspirating Smoke Detector Installers Handbook Appendix A Communications card and APIC Figure 15 RS 232 cable connections 1 2 2 3 3 2 5 5 7 8 8 7 1 9 pin female D connector 2 9 pin female D connector A connected PC can access the detector event memory to review previous or current events such as detector alarms or faults The detector internal chart recorder can also be accessed to allow analysis of detector behaviour refer to the Remote Control User Manual for further information The PC cannot be used to configure the detector except to enter time and date settings for the detector event log and chart recorder to be viewed in the remote control software The detector does not incorporate a real time clock so the time and date need to be re entered if the detector is powered down for any reason Installation of the communications card also provides the detector with RS 485 network communication via the A B and SCREEN terminals on the detector main board Figure 9 on page 19 This can be used for simple remote display indication or integration into a larger site wide management and display system separate from the local fire detection and alarm system Setting the detector address In order to identify itself to the command module or fire panel each detector needs to have a unique address ranging from 1 to 127 The detector address is s
32. formation This equipment is Class IIl as defined in EN 60950 i e this equipment is designed to operate from Safety Extra Low Voltages and does not generate any hazardous voltages As this equipment is part of a fire detection system input power should be supplied from an approved power supply conforming to EN 54 4 or UL ULC and FM standards This product has been designed to meet the following requirements e NFPA 72 National Fire Alarm and Signaling Code e UL 268 Smoke Detectors for Fire Alarm Signaling Systems e UL268A Smoke Detectors for Duct Applications e UL 864 Control Units for Fire Protective Signaling Systems e CAN ULC S524 Installation of Fire Alarm Systems e ULC S527 Control Units for Fire Alarm Systems e CAN ULC S529 Smoke Detectors for Fire Alarm Systems System reacceptance test after reprogramming UL ULC and FM To ensure proper system operation this system must be retested in accordance with NFPA 72 after any programming change Reacceptance testing is also required after any addition or deletion of system components and after any modification repair or adjustment to system hardware or wiring Limitation of liability To the maximum extent permitted by applicable law in no event will UTCFS be liable for any lost profits or business opportunities loss of use business interruption loss of data or any other indirect special incidental or consequential damages under any theory of liability whether based
33. given by the exchange rate in the rooms ventilated by the duct ventilation system This tends to be rapid giving early warning of any smoke present This type of sampling is particularly suited to aspirated smoke detection since the smoke content in the air will tend to be diluted to a level below that of point type detectors Also the relatively high airflow in the duct reduces the effectiveness of point detection devices The duct sampling method does have one major disadvantage If the ventilation becomes inoperative the air flow through the duct system ceases and the smoke detection system becomes ineffective Figure 6 Return air duct sampling 8 7 1 1 4 to 1 3 of duct width 5 2 3 to 3 4 of duct width 2 45 degree 6 Direction of air flow 3 11 81 in 300 mm minimum 7 Intake pipe to detector 4 45 degree 8 Exhaust pipe from detector Figure 6 above shows a typical sampling pipe arrangement for an air duct The right pipe is the sampling pipe and the holes on it are drilled 4 inches apart and face into the oncoming air stream The left pipe exhausts air from the detector The detector is UL 268A and CAN ULC S529 approved for duct applications with an operating air velocity range of 300 to 4000 ft min 1 52 to 20 32 m sec The following guidelines apply e Only one duct can be monitored per detector e Ifthe air sampling pipe system and aspirating detector is used as the primary smoke detection system metho
34. in contract tort negligence product liability or otherwise Because some jurisdictions do not allow the exclusion or limitation of liability for consequential or incidental damages the preceding limitation may not apply to you In any event the total liability of UTCFS shall not exceed the purchase price of the product The foregoing limitation will apply to the maximum extent permitted by applicable law regardless of whether UTCFS has been advised of the possibility of such damages and regardless of whether any remedy fails of its essential purpose Installation in accordance with this manual applicable codes and the instructions of the authority having jurisdiction is mandatory While every precaution has been taken during the preparation of this manual to ensure the accuracy of its contents UTCFS assumes no responsibility for errors or omissions ii LaserSense Nano Aspirating Smoke Detector Installers Handbook Advisory messages Advisory messages alert you to conditions or practices that can cause unwanted results The advisory messages used in this document are shown and described below WARNING Warning messages advise you of hazards that could result in injury or loss of life They tell you which actions to take or to avoid in order to prevent the injury or loss of life Caution Caution messages advise you of possible equipment damage They tell you which actions to take or to avoid in order to prevent the damage Note Not
35. l Fire Alarm and Signaling Code e CSA C22 1 Canadian Electrical Code Part 1 e CAN ULC S524 Installation of Fire Alarm Systems e Any other local national or installation requirements or standards WARNING Electrocution hazard All connections should be made with the power turned off Antistatic precautions This system contains static sensitive components Always ground yourself with a proper wrist strap before handling any circuits Caution When handling any electric components or printed circuit boards antistatic precautions must be followed Failure to do so may result in component damage Static discharge can be reduced by adhering to the following guidelines e Always use conductive or antistatic containers for transportation and storage if returning any item e Wear a wrist strap while handling devices and ensure that a good ground is maintained throughout the installation process e Never subject a static sensitive device to sliding movement over an ungrounded surface and avoid any direct contact with the pins or connections e Avoid placing sensitive devices onto plastic or vinyl surfaces e Minimize the handling of sensitive devices and printed circuit boards PCBs 8 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration System design Pre engineered piping designs simplify the installation of the detector pipe network The following criteria ensure that the
36. le Connect screen to SCREEN terminal Earth the screen at one end ONLY if using a chain of detectors connected to a Command Module earth the cable screen at the Command Module only Optional APIC card fitted addressable communications mode Connect and IN and and OUT terminals to fire panel with a communications protocol compatible with the APIC Set APIC address switches to identify detector In a chain of detectors linked to a Command Module use a serial communications card in each detector each set to an individual address and communicate with the fire panel via a single APIC in the Command Module Use screened cable with screen connected to the detector EARTH terminal WARNING Electrocution hazard All connections should be made with the power turned off Power supply connections The grounded power supply cable should be routed through the metal cable gland provided leaving about 1 1 4 inch 35 mm of the cable extending from the bottom of the cable gland Depending on the type of cable used it may be necessary to increase the diameter of the cable with sleeving or insulating tape to ensure that the cable is firmly held when the cable gland is fully tightened Note If this equipment is part of a fire detection system power should be supplied from a supervised UL Listed power supply designed for fire system use To connect the power supply 1 Remove the Nano detector front cover and then locate the power s
37. ng pipe 8 Equipment cabinet 4 Standoff posts 9 Direction of smoke 5 Correct 10 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Below or above the ceiling installations The Nano detector is supplied with an exhaust port see Figure 2 on page 5 This allows the Nano detector to sample from areas which may be at different air pressure from the detector location Typical uses are for air duct sampling and allowing the installation of the detector in under floor or ceiling voids or when sampling from pieces of computer related equipment See Figure 4 below and Figure 5 on page 12 Figure 4 Installation of pipework above ceiling with exposed detector piped exhaust 1 Sampling pipe 4 Detector 2 Sampling hole 5 False ceiling 3 Exhaust pipe LaserSense Nano Aspirating Smoke Detector Installers Handbook 11 Chapter 2 Installation and configuration Figure 5 Installation with detector mounted in ceiling void no exhaust piping 1 2 1 Sampling pipe 3 Detector 2 Sampling hole 4 False ceiling 12 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Return air duct sampling method Duct sampling generally is the most cost effective method of air sampling because the pipe runs are minimal and a single detector may be used to cover a larger area The speed of response of the detector to smoke is
38. ngs reflect site operations 5 The detector will generate no alarms during the 15 minute FastLearn period and after this the detector will operate at a reduced sensitivity for 24 hours while ClassiFire learns and acclimates to the protected environment and sets up appropriate day and night sensitivity settings 6 Reconnect the detector to the fire control unit if applicable Acclimation period The detector will operate at a reduced sensitivity for 24 hours ClassiFire will set up the appropriate day and night sensitivity settings All air handling units thermostats and other systems that can have an effect on the operating environment should be turned on to simulate normal operating conditions as closely as possible Investigate and correct any condition that cannot be accounted for Transport time verification A maximum transport time verification test measures the amount of time it takes for the detector to respond to smoke that enters the sampling point furthest from the detector The results of this test and the calculated maximum transport time from PipeCAD must be recorded on the checklist if applicable Measured transport time less than the calculated time is acceptable For EN 54 compliance the transport time of the last sampling hole must be checked following installation and proven to be less than or equal to the value determined by PipeCAD To measure the maximum transport time of the system 1 Determine the furthest s
39. no longer be present for proper operation e Do not locate sampling pipe near outside air inlets except to monitor smoke entry to the handling system for adjacent areas e Whenever possible locate sampling pipe upstream of air humidifiers and downstream of dehumidifiers Note Deviation from these recommended guidelines may reduce the performance of your air sampling pipe system and detector 14 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Return air grill sampling method Return air grill sampling systems are designed with sampling pipes centered in the front of the return air grill Sampling holes should be spaced so that a minimum of three holes are used for each grill Larger grills require more sampling holes The sampling holes should be in the direction of the airflow with an end cap When using the air grill sampling without another sampling method the smoke detection system will be ineffective when the ventilation system is inoperative If this method is being used as the primary smoke detection system the grill should be monitored for stoppage of airflow Figure 7 below shows a typical mounting to stand sampling pipe away from high velocity low pressure air at the entrance to the return air grill Figure 7 Return air grill sampling method 1 Air flow 4 Standoff post 2 Self tapping screws 5 Sampling holes 3 Return air grill LaserSense Nano Aspir
40. not turn and the detector will indicate a FLOW fault Main PCB No user serviceable parts The PCB is fixed in place with 5 M3 x 6 screws The detector should not be operated with any of the screws missing as this could cause air leaks and unreliable operation Power supply connection terminals Volt free relay contact terminals DIP switch Used to configure user selectable detector functions Input switch terminals Ribbon cable connection for optional communication card or APIC card 10 Optional communication terminals used when the optional communication card is fitted to connect the RS 485 network LaserSense Nano Aspirating Smoke Detector Installers Handbook 5 Chapter 1 Product and component descriptions 11 Detector laser head ribbon connector If this lead is broken or not connected the detector will indicate a HEAD Fault 12 Detector laser head assembly No user serviceable parts Do not remove this from the detector due to the risk of exposure to the laser 13 Detector laser head cover plate This protects the laser head The plate should not be removed from the detector 14 Replaceable dust filter This simply slides in and out of its mounting The separator and its replacement have IN written in red on one side and OUT on the other to indicate correct orientation 15 Three mounting holes to mount the detector Use 10 24 pan head screws for mounting Note Ensure that the detector is fixed to a flat
41. nsmitter Direct current Detector End of line device End of line resistor Factory Mutual Full scale deflection Feet High sensitivity smoke detector Hertz frequency Inches Liquid crystal display Light emitting diode Materials and Equipment Acceptance Division of the City of New York Notification appliance circuit Normally closed National Electrical Code National Fire Protection Association Normally open LaserSense Nano Aspirating Smoke Detector Installers Handbook 49 Glossary NYC PCB pF P N PSU RAM SLC TB UL ULI V VAC VDC VRMS 50 New York City Printed circuit board Pico farads Part number Power supply unit Random access memory Signaling line circuit Terminal block Underwriters Laboratories Inc Volts Volts AC Volts DC Volts root mean square LaserSense Nano Aspirating Smoke Detector Installers Handbook Index A Advisory messages iii Alarm Factor 24 Antistatic precautions 8 APIC 47 Auto calibration 25 C ClassiFire 17 21 23 24 29 Commissioning 28 Acclimation period 29 Transport time verification 29 Communications card 44 Configuration 23 Configuration DIP switch settings 23 D Detector internal components 5 Detector address Setting the detector address 45 E EN 54 20 compliance iv F FastLearn 25 28 41 Fixed alarms 24 Flow delay 24 Indicators 4 Input connection 21 Input select 24 Installation 16 Electri
42. o Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Configuration The default settings of the detector meet most application needs These settings can be customized to meet additional requirements Customizing the Nano detector requires changing the settings of the eight segments of the configuration DIP switch Figure 12 mounted on the main PCB See Table 4 below and the paragraphs following the table to determine the proper switch setting for the application Figure 12 Configuration DIP switch Table 4 DIP switch settings Setting Switch Switch Switch Switch Switch Switch Switch Switch 1 2 3 4 5 6 7 8 Set detector sensitivity Alarm factor 6 OFF OFF Alarm factor 7 ON OFF Alarm factor 8 OFF ON Alarm factor 9 ON ON Classifire On OFF Fixed alarms ON Flow limit offset 40 OFF OFF 20 ON OFF 5 OFF ON 3 ON ON Flow delay 240 seconds OFF 30 seconds ON Input select PSU Fault OFF ClassiFire ON Override Auto calibration Enable OFF Disable ON Note The settings in bold text are the factory default settings LaserSense Nano Aspirating Smoke Detector Installers Handbook 23 Chapter 2 Installation and configuration Alarm factor The detector calculates sensitivity relative to the ambient pollution level Higher Alarm Factors provide reduced sensitivity the alarm threshold is maintained further away from the ambient
43. put select The detector input terminal may be used to either monitor an associated power supply for faults or for ClassiFire override reduces normal sensitivity by 50 Note In the factory default condition the switch is set to OFF power supply monitoring This gives a fault condition if there is an open circuit on the INPUT terminals Fit a wire link if you do not require power supply monitoring Caution If you fit a wire link across the INPUT terminals you must set this switch OFF or else the detector sensitivity is dramatically and permanently reduced by the ClassiFire override function 24 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Auto calibration Auto calibration automatically starts a new FastLearn cycle when the detector is powered up This may be disabled if the previous settings need to be retained Final installation Once the power and signal connections are made place the detector cover onto the unit and secure the cover to the unit using the cover mounting screw Note The detector is designed solely for operation with the front cover securely fitted using the cover mounting screw Removing the detector Removing the detector is the reverse of the installation process disconnecting the pipework and wiring connections installed in the unit LaserSense Nano Aspirating Smoke Detector Installers Handbook 25 Chapter 2 Installation and configuration
44. rator to remove dust and dirt before entering the laser detection chamber State of the art electronics are used to analyse the sampled air and generate a signal representing the level of smoke present ClassiFire intelligence also monitors the detector chamber and dust separator for contamination continually adjusting the appropriate operating parameters to counteract the negative effects of any contamination Aspirating smoke detectors are unique in being able to provide a consistent level of protection in a very wide range of environments by continuously making minor adjustments to sensitivity The detector can easily be installed without any specialised tools or software Available software for the detector The Remote Control and the SenseNET software packages are available to program the detector e Remote Control software Provided free of charge with every detector this software package enables the user to set up and configure the programmable functions of one or more detectors from a computer connected via an RS 232 serial cable e SenseNET software SenseNET software is used to configure and manage a large network of detectors with a simple streamlined graphical user interface from a computer connected to a detector or command module via an RS 232 serial cable to RS 485 converter interface 2 LaserSense Nano Aspirating Smoke Detector Installers Handbook Specifications Chapter 1 Product and component descriptions Caution
45. re 13 Location of dust separator cartridge 1 1 Dust separator filter cartridge LaserSense Nano Aspirating Smoke Detector Installers Handbook 41 Chapter 5 Maintenance 42 LaserSense Nano Aspirating Smoke Detector Installers Handbook Appendix A Communications card and APIC Summary This appendix provides information about the communication card and the APIC Content Optional communications card 44 Setting the detector address 45 Optional APIC 47 LaserSense Nano Aspirating Smoke Detector Installers Handbook 43 Appendix A Communications card and APIC Optional communications card An optional communications card can be fitted inside the Nano detector to provide an RS 232 serial port and RS 485 network communication Figure 14 Optional communications card 6 Card locating post 2 Ribbon cable connection on detector main PCB 3 Detector address DIP switch 4 M3 x6 fixing screw provided with the card 5 Support spacer nylon provided with the card 6 RS 232 serial port Use 9 pin D type null modem cable to connect to a PC If the communication card is not factory installed you must install the adhesive back support spacer onto the detector housing A recess is provided in the housing to ensure proper placement of the support spacer Direct connection of a PC to the communications card is done using a 9 pin RS 232 interface on the communications card using a null modem cable con
46. rence in airflow rates or pressure differentials If detection in environments conforming to these descriptions is required other type detectors should be used Always locate the sampling points in positions to which smoke may reasonably be expected to travel It is usually better to locate the sampling pipe directly in the airflow for example across the return air register of an air conditioning unit Note There is no substitute for carrying out smoke tests prior to installation of pipework to indicate suitable sampling point location LaserSense Nano Aspirating Smoke Detector Installers Handbook 9 Chapter 2 Installation and configuration Sample pipe networks Simple designs with short sampling pipes produce the best results Maximum allowed sampling pipe length is 164 feet 50 meters in still air In areas or applications where the external airflow rate is greater than 3 feet per second 1 meter per second the maximum sampling pipe length is reduced to 33 feet 10 meters Air handling unit installation No more than one air handling unit may be protected with one Nano detector In this application ensure that the sampling pipe is raised clear of high velocity air in the immediate vicinity of the air intake grill on standoff posts as shown in Figure 3 below Figure 3 Air handling unit in vicinity of the Nano detector exhaust pipes not shown for clarity 1 Incorrect 6 Detector 2 Detector 7 AHU 3 Sampli
47. rial air conditioning turns on Another possible cause is that the aspiration fan connection cable is damaged or disconnected 6 Filter Illuminates to indicate that the detector s air filter needs to be changed 7 Laser Illuminates to indicate a problem with the detector laser chamber as might be caused by the laser head connecting cable is damaged or disconnected It can also be caused by certain kinds of internal systems faults which appear in the detector s event log as process errors 8 Front cover securing screw Leave sufficient clearance below the detector to allow screwdriver access to this screw 4 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 1 Product and component descriptions Inside the detector Figure 2 below shows the main interior parts of a detector with the cover off Figure 2 Internal components 1 8 0 1 2 5 6 7 8 9 10 15 11 14 12 13 Two holes for conduit connection There are two 3 4 in drilling guides provided on the top of the detector and one on the bottom providing holes for conduit Pipe entries provide a connection for 3 4 inch pipe A 3 4 in male to 25 mm female adapter is required when using larger than 1 inch 27 mm O D pipe Note Do not glue pipes into the detector to allow for future removal Aspirating fan connector lead If this lead is broken or not connected the fan will
48. upply terminal block 20 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 2 Installation and configuration Refer to Figure 2 on page 5 for an illustration of the Nano detector with the front cover removed Refer to Figure 10 below for a detailed illustration of the power input terminals 2 Connect 0 V and 24 VDC to the OV 24 and 24V screw terminals respectively 3 Connect the shielded screened wire to the EARTH screw terminal Figure 10 Power supply terminals Relay connections The Nano detector includes an Alarm and a Pre Alarm relay which will transfer to the normally open N O position on alarm It also includes a general Fault relay which will transfer to the normally closed N C position during a fault condition or on power down The relays are of the volt free type with a maximum current capacity of 1A at 24 VDC maximum To comply with radiated immunity requirements it is recommended that the relay connection wires be looped once around a suppression ferrite provided There should be about 1 1 4 inch 30 mm of wire between the end of the ferrite and the terminal block to give adequate stress relief To achieve this it is necessary to strip back the cable shield approximately 5 inches 130 mm The shield should be terminated under the cable gland cap The Nano detector interfaces to fire alarm panels using the detector s ALARM PRE ALARM and FAULT relay conta
49. vice The detector is not designed to handle large quantities of coarse debris and dust Detector sensitivity There are many reasons why particle densities may vary and the varies over time ClassiFire system is designed to automatically compensate for this in order to reduce the likelihood of nuisance alarms due to normal variations in background smoke density Within limits set by the ClassiFire alarm factor this is a normal part of the detector s operation 34 LaserSense Nano Aspirating Smoke Detector Installers Handbook Chapter 4 Troubleshooting Problem Solution Corrective Action Flow fault errors Low Flow error message High Flow error message These occur when the airflow rate into the detector exceeds the preprogrammed parameters As the detector learns the flow setup from the initial installation this usually means that there has been some change in conditions A Flow High fault may indicate that a sampling pipe is damaged and a Flow Low fault may indicate that the pipe has been blocked e g by nearby building operations If the detector input is sampled from one area and the exhaust is in another area with different pressure e g the detector is in a roof space and sampling from an enclosed room this may lead to flow faults In this case it would be necessary to lead a pipe from the exhaust to the protected area to ensure nominal flow Check that the pipe is not blocked If the pipe is unused
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