System Sensor DH200RPL Smoke Alarm User Manual
Contents
1. 0 6 to 1 2 m ST 3 2 Slide the sampling tube with the flange into the housing bushing that 4 to 8 ft 1 2 to 2 4 m ST 5 meets the air flow first Position the tube so that the arrow points into 8 to 12 ft 2 4 to 3 7 m ST 10 the air flow Secure the tube flange to the housing bushing with two Must extend a minimum of 7 3 the duct width 6 self tapping screws 3 From inside the duct couple the other sections of the sampling tube Figure 4 Air duct detector sampling tube to the section already installed using the 2 inch conduit fittings sup plied Make sure that the holes on both of the sampling tubes are lined SAMPLING up and facing into the air flow TUBE END CAP Trim the end of the tube protruding through the duct so that 1 to 2 25 to 50mm of the tube extend outside the duct Plug this end with the end cap and tape closed any holes in the protruding section of the tube Be sure to seal the duct where the tube protrudes MUST FACE AIR FLOW DIRECTION NOTE An alternate method to using the ST 10 is to use two ST 5 sam INTO AIR FLOW Honzo pling tubes Remove the flange from one of the tubes and install as described above After the installation use electrical tape to close off some of the sampling holes so that there are a total of 10 to 12 holes spaced as evenly as possible across the width of the duct D200 39 00 3 156 1977 004R NOTE Air currents inside the duct may cause excessive vibration especiall2. Drill a 1 4 hole 3 feet upstream from the duct smoke detector With the air handler on measure the air velocity with an anemometer Air speed must be at least 100 FPM Spray aerosol smoke into the duct through the 14 hole for five seconds Wait two minutes for the duct smoke detector to alarm If the duct smoke detector alarms air is flowing through the detector Remove the duct smoke detector cover and blow out the residual aerosol smoke from the chamber and reset the duct smoke detector Use duct tape to seal the aerosol smoke entry hole Aerosol smoke can be purchased from Home Safeguard Industries Malibu CA Phone 310 457 5813 9 1 3 Smoke Entry Test To determine if smoke is capable of entering the sensing chamber visually identify any obstructions Plug the exhaust and sampling tube holes to prevent ducted air from carrying smoke away from the detector head then blow smoke such as cigarette cotton wick or punk directly at the head to cause an alarm REMEMBER TO REMOVE THE PLUGS AFTER THIS TEST OR THE DETECTOR WILL NOT FUNCTION PROPERLY 9 1 4 Air Flow Test using Dwyer Series 607 Differential Pressure Transmitter Verify the air speed of the duct using an anemometer Air speed must be at least 100 FPM Wire the Dwyer transmitter as shown in Figure 8 Connect the leads of the meter to either side of the 1000Q resistor Allow unit to warm up for 15 seconds With both HIGH and LOW pressure ports open to ambient air measu
3. ARE NOT USED Figure 12 Wiring Diagram for DH2OORPL with optional PA400 seg OO OOo Oe 5 Alarm Signal 7 Aux Power 9 2 Standby Alarm And Sensitivity Tests 9 2 1 Standby And Trouble Standby Trouble Test If the system control panel is programmed look for the presence of the flashing LEDs through the transparent housing cover The LED will flash with each communicat ion If the detector LEDs do not flash then the de tector lacks power check wiring panel pro gramming or power sup ply the detector board is missing replace or the unit is defec tive return for repair Additionally if the cover is removed for more than 20 minutes the LEDs of the detector will not flash The trouble condition can be caused intentionally to veri fy correct operation of the system Remove the detector board to cause a trouble condition locally and at the sys tem control panel 9 2 2 Alarm Tests 9 2 2 1 M02 04 00 Magnet Test 1 Place the painted surface of the magnet onto the TEST locator on the bottom of the detector housing Figure 13 2 Verify system control panel alarm status and control panel execution of all intended auxiliary functions i e fan shutdown damper control etc 3 The detector is self restoring when the magnet is removed Verify that the system control panel has reset panel may have to be reset Figure 14 Insulator Card
4. Detector Maintenance and Test Procedures Test and maintain duct smoke detectors as recommended in NFPA 72 The tests contained in this manual were devised to assist maintenance person nel in verification of proper detector operation Before conducting these tests notify the proper authorities that the smoke detection system will be temporarily out of service Disable the device or system under test to prevent unwanted alarms D200 39 00 156 1977 004R 9 1 Smoke Entry Tests 9 1 1 Air Flow This product is designed to operate over an extended air speed range of 100 to 4000 FPM To verify sufficient sampling of ducted air turn the air han dler on and use a manometer to measure the differential pressure between the two sampling tubes The differential pressure should measure at least 0 0015 inches of water and no more than 1 2 inches of water Because most commercially available manometers cannot accurately measure very low pressure differentials applications with less than 500 FPM of duct air speed may require one of the following 1 the use of a current sourcing pressure transmitter Dwyer Series 607 per Section 9 1 4 or 2 the use of aerosol smoke per section 9 1 2 9 1 2 Air Flow Test using Aerosol Smoke This test is intended for low flow systems 100 500 FPM If the air speed is greater than 500 FPM use a conventional manometer to measure differ ential pressure between the sampling tubes as described in 9 1 1
5. auxil iary devices it is usually recommended that single conductor wire be no smaller than 18 gauge The duct smoke detector terminals accommodate wire sizes up to 12 gauge The last foot 0 3m of conduit should be flex ible conduit available in electrical supply houses which facilitates easier installation and puts less strain on the conduit holes in the housing Solid conduit connections may be used if desired Smoke detectors and alarm system control panels have specifications for Signaling Line Circuit SLC wiring Consult the control panel manufactur er s specifications for wiring requirements for the particular model control panel being used before wiring the detector loop The DH200RPL detector is designed for ease of wiring The housing provides a terminal strip with clamping plates Wiring connections are made by stripping about s inch 9mm of insulation from the end of the wire sliding the bare end under the plate and tightening the clamping plate screw Two LEDs on each duct smoke detector may light if programmed by the system control panel to provide a local visible indication Remote LED annunciator capability is available as an option Each duct smoke detector can only be wired to one remote accessory Different panel manufacturers offer different feature sets across their dif ferent panel models As a result certain features of the DH200RPL may be available on some control panels but not on others The
6. for DH20ORPL Duct Smoke Detector O WARNING HIGH VOLTAGE COMMUNICATION H er 1 2 O TEST ALM AUXILIARY 24 V N y POWER INPUT SGL POWER aM eur T E 220 240 gt C4 3 14 s 17 s 9 10 ii 12 13 14 15 16 17 18 19 NC dam NO NC du NO NO dul NC VAC 120 VAC y SUPERVISORY AUXILIARY auxilary N YX A Blc RELAY RELAY A RELAY B TS TERMINALS 12 AND 13 ARE OPEN D COM NO DURING TROUBLE CONDITION WARNING IMPROPER CONNECTION TO TERMINALS SUPERVISORY RELAY MAY RESULT IN DAMAGE TO THIS UNIT D200 39 00 156 1977 004R 9 2 2 2 RTS451 RTS451KEY Remote Station Test The RTS451 RTS451KEY Remote Test Station facilitates test of the alarm capability of the duct smoke detector These accessories provide the stimulus to initiate an alarm condition at the detector The detector is self restoring when the accessory test stimulus is removed Verify that the system control panel has reset panel may need to be reset 9 2 3 Sensitivity Tests Notify the proper authorities that the smoke detector system is undergo ing maintenance and that the system will temporarily be out of service Disable the device or system undergoing maintenance to prevent unwant ed alarms and possible dispatch of the fire department 9 3 Maintenance of Duct Smoke Detectors 9 3 1 Air Filters 1 Turn off power to the system 2 Remove
7. to terminal block 11 Model DH200RPL Air Duct Smoke Detector Specifications Operating Temperature Range 32 to 131 F 0 to 55 C 22 to 158 F 30 to 70 C 10 to 93 non condensing 100 to 4000 ft min 0 5 to 20 32 m sec 147 s L x 5 2 W x 23 4 D 37 cm Lx 14 cm W x 7 cm D Storage Temperature Range Humidity Range Air Velocity Dimensions 156 1977 004R Current Requirements using no accessories Power supply voltage 20 30 VDC 24 VAC 50 60 Hz 65 mA RMS 120 VAC 50 60Hz 220 240 VAC 50 60Hz Max standby current 26 mA 44 mA RMS 25 mA RMS 87 mA 182 mA RMS Max alarm current 52 mA RMS 30 mA RMS Alarm response time 3 to 10 Sec 3 to 10 Sec 3 to 10 Sec 3 to 10 Sec 2 Sec 2 Sec 2 Sec 2 Sec Power up time Contact Ratings Accessory Current Loads at 24 VDC Alarm auxiliary contacts DPDT 10 A 30 VDC 10 A 277 VAC 75 power factor 240 VA 249 VAC 0 4 power factor 1 8 HP 120 VAC 1 4 HP 240 VAC Device Standby PA400 0 mA RA400Z 0 mA RTS451 RTS451 KEY 0 mA Supervisory contact SPST 2 0 A 30 VDC resistive Minimum switching current for auxiliary contact must be 100 mA DC minimum 5 VDC Programming Specifications Requirements for Intelligent System Control Panels There are a limited number of devices that can have their LEDs pro by the control panel and its ability to supply LED current grammed to illuminate T
8. CC Statement This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful inter ference and 2 this device must accept any interference received including interference that may cause undesired operation Note This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help D200 39 00 156 1977 004R 2004 System Sensor
9. HOLES DETECTOR SAMPLING TUBE FILTERS TERMINAL STRIP POWER BOARD NOTE The DH200RPL air duct smoke detector is photoelectric detector This smoke detection method combines with an efficient housing design that samples air passing through a duct and allows detection of a developing hazardous condition When sufficient smoke is sensed an alarm signal is initiated at the fire control panel monitoring the detector and appropriate action can be taken to shut off fans blowers and change over air handling systems etc This can prevent the distribution or it can isolate toxic smoke and fire gases throughout the areas served by the duct system Two LEDs on each detector may illuminate if programmed by the system control panel to provide a local alarm indication There is also a remote alarm output for use with auxiliary devices The DH200RPL has remote test capability with the RTS451 RTS451KEY Remote Test Station The DH200RPL incorporates a cover tamper feature When the cover is removed for more than 20 minutes the unit loses communication at the panel a trouble is indicated at the panel and the alarm relay switches states thereby shutting down fans dampers and blowers In the case when the sensor is removed or when there is no power to the unit only a trouble is indicated at the panel alarm relay does not work any longer Contents Of The Duct Smoke Detector 1 Complete duct smoke detector assembly with sens
10. INSTALLATION AND MAINTENANCE INSTRUCTIONS Innove SY S9 SENSOR DH200RPL Intelligent Air Duct Smoke Detector with Extended Air Speed Range 3825 Ohio Avenue St Charles Illinois 60174 800 736 7672 FAX 630 377 6495 www systemsensor com Before installing detectors please thoroughly read the NEMA Guide for Proper Use of Smoke Detectors in Duct Applications which provides detailed information on detector spacing placement zoning wiring and special applications Copies of this manual are available from NEMA National Electrical Manufacturers Association 2101 L Street NW Washington DC 20037 NFPA Standards 72 and 90A should also be ref erenced for detailed information NOTICE This manual shall be left with the owner user of this equipment IMPORTANT This detector must be tested and maintained regularly fol lowing NFPA 72 requirements The detector should be cleaned at least once a year General Description An HVAC system supplies conditioned air to virtually every area of a building Smoke introduced into this air duct system is distrib uted to the entire building Smoke detectors designed for use in air duct systems are used to sense the presence of smoke in the duct Contents of the Duct Smoke Detector Housing Kit The DH200RPL Duct Smoke Detector consists of the following items See Figure 1 Figure 1 Exploded View Of Duct Smoke Detector Components FOAM GASKETS CONDUIT
11. and inspect sampling tube filters 3 If filters are heavily coated with dirt replace them with new filters p n F36 09 11 If they are not heavily coated use a vacuum cleaner or compressed air nozzle to remove dust then reinstall the filters 9 3 2 Photo Detector Boards 1 Remove the screen by gently grasping on each side and pulling straight off 2 Lift the photo chamber in the same fashion Vacuum the screen and cover Use clean compressed air to loosen and blow out any remaining debris Replacement screens p n S08 39 01 are available 3 Vacuum photo chamber then use clean compressed air to blow area clean 4 Replace the chamber by pressing it onto the base Press the screen into place It should fit tightly on the chamber D200 39 00 10 Board Replacement 10 1 Sensor Board Replacement 1 Remove the two sensor board mounting screws 2 Pull gently on the board to remove it 3 To replace the board align the board mounting features holes and the interconnect terminals Push the board into place 4 Secure board with the two mounting screws 10 2 Power Board Replacement 1 Disconnect wiring from the terminal block 2 Remove the two power board mounting screws 3 Pull gently on the board to remove it 4 To replace the board align the board mounting features holes and the interconnect terminals Push the board into place uw Secure board with the two mounting screws 6 Re connect wiring
12. der to function properly this detector must be installed according to ing the instructions Do not exceed the electrical or ambient specifications or the detector will not function properly This detector must be protected from the elements Installation Sequence Step 1 Verify duct air flow direction and velocity cceeeee 2 Step 2 Drill the mounting HOLES vices isis sisaersesssscadaenassesssasdsereaerovactia 2 Step 2 1 Install the sampling tube for ducts less than 1 2 feet 0 46m Wide ccccceecsseseeeeeeeeeeeeeeeee 2 Step 3 Secure the detector housing to the duct Step 4 Install the sampling tube for ducts greater than 1 2 feet 0 46m Wide ccceeeeeeerteeeeeeteees 2 Step 4 1 Installation for ducts greater than 1 2 feet 0 46m but less than 8 feet 2 4m wide 0cccceeeeeee 3 Step 4 2 Installation for ducts more than 8 feet OAM Wd Eetiono a a e balnGsaubsaansiopiewetens 4 Step 5 Install the filters iniuriis araro nn E 4 Step 6 Field Wiring i sssss sa cvsee snstesstacissscnaia ecveseracaatansecsensan e davasoeeaien 4 Step 7 Perform detector Cheek esisiini ai 5 Step 8 fnstall The COVE sensin eare E r AEREE 5 Step 9 Detector Maintenance and Test Procedures 0eeee0e 5 1 Verify Duct Air Flow Direction And Velocity The DH200RPL duct smoke detector is designed to be used in air han dling systems having air velocities of 100 to 4000 feet per
13. encing with the date of manufacture After phoning System Sensor s toll free number 800 SENSOR2 736 7672 for a Return Authorization number send defective units postage prepaid to System Sensor Returns Department RA ____ 3825 Ohio Avenue St Charles IL 60174 Please include a note describing the malfunction and suspected cause of failure The Company shall not be obligated to repair or replace units which are found to be defective because of damage unrea sonable use modifications or alterations occurring after the date of manufacture he loss or damage is caused by the Company s negligence or fault Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This Warranty gives you specific egal rights and you may also have other rights which vary from state to state To keep your equipment in excellent working order ongoing maintenance is required per the manufacturer s recommendations and UL and NFPA standards At a mini mum the requirements of Chapter 7 of NFPA 72 the National Fire Alarm Code shall be followed A preventative maintenance agreement should be arranged through he local manufacturer s representative Though smoke detectors are designed for ong life they may fail at any time Any smoke detector fire alarm equipment or any component of that system which fails shall be repaired or replaced as soon as possible F
14. ferential fall below 0 0015 inches of water Figure 9 Wiring Diagram for DH2OORPL Duct Smoke Detector using a UL listed control panel NOTE Jumper Jl shunt must be installed for 2 W applications J1 shunt must be removed for power PCB supervision NOTE J1 JUMPER MUST z BE INSTALLED FOR 2W APPLICATIONS THE 2 o J1 JUMPER MUST BE COMMUNICATION LINE REMOVED FOR POWER BOARD SUPERVISION E O UL LISTED CONTROL PANEL J1 JUMPER 1ST DETECTOR IN LOOP J1 JUMPER 5 QO 2ND DETECTOR IN LOOP D200 39 00 156 1977 004R Figure 10 Wiring Diagram for DH2O0ORPL Duct Detector with optional RA400Z RA400Z DO NOT BREAK TAB ON RA400Z 5 5 Alarm Signal 7 Aux Power Figure 11 System Wiring Diagram for DH20ORPL Duct Smoke Detector with RTS451 RTS451KEY RTS 451 RTS451KEY 1 O ALARM SIGNAL 3 O NOT USED 6 O NOT USED 2 CIRCUIT REFERENCE z l TEST SWITCH ALARM SIGNAL AUX POWER TEST TEST FOR RTS451 TERMINAL 3 IS NOT USED RTS451 DOES NOT HAVE A TERMINAL 6 FOR RTS451KEY TERMINALS 3 AND 6
15. he actual number of devices is determined Refer to the Control Panel Installation Manual for details Accessories Part No Accessories Part No Remote LED RA400Z Replacement Photo Insect Screen S08 39 01 Magnetic Remote Test RTS451 Replacement End Cap for Plastic Sampling Tube P48 61 00 Key Activated Remote Test RTS451KEY Replacement End Cap for Metal Sampling Tubes P48 21 00 Replacement Filters F36 09 11 Replacement Photoelectric Sensor Board A5053 Replacement Test Magnet M02 04 00 Replacement Power Board w relay A5060 Please refer to insert for the Limitations of Fire Alarm Systems Three Year Limited Warranty System Sensor warrants its enclosed air duct smoke detector to be free from defects in materials and workmanship under normal use and service for a period of three In no case shall the Company be liable for any consequential or incidental damages for breach of this or any other Warranty expressed or implied whatsoever even if years from date of manufacture System Sensor makes no other express warranty for this air duct smoke detector No agent representative dealer or employee of the Company has the authority to increase or alter the obligations or limitations of this Warranty The Company s obligation of this Warranty shall be limited to the repair or replacement of any part of the air duct smoke detector which is found to be defective in materials or workmanship under normal use and service during the three year period comm
16. he tube Be sure to seal the duct DETECTOR HOUSING where the tube protrudes EXHAUST AIR FLOW TUBE AIR FLOW DIRECTION DIRECTION NOTE The sampling tube end cap is critical to the proper operation of the SAMPLING duct smoke detectors The end cap is needed to create the proper air flow et c TUBE D to the sensor of the duct smoke detector VERTICAL MOUNTING OF HOUSING Figure 3 Installation of foam gaskets over NOTE Only metal sampling tubes can be installed in sampling tube bushings orientations C and D SCREW HOLES FOR ATTACHING HOUSING 4 2 Installation For Ducts More Than 8 Feet 2 4m Wide TO DUCT WORK NOTE To install sampling tubes in ducts more than 8 feet 2 4m wide work must be performed inside the air duct Sampling of air in ducts wider than 8 feet 2 4m is accomplished by using the ST 10 sampling tube If the tube is shorter than the width of the air duct install the end cap into the sampling tube as shown O in Figure 4 and support the end opposite the duct smoke detec O tor Install the sampling tube as follows Bei Table 1 Sampling tubes recommended for different l Drill a A inch 19mm hole in the duct directly opposite the hole duct widths already drilled for the sampling tube Make sure the hole is 1 to 2 Outside Duct Width Sampling Tube Recommended 25 to 50mm below the inlet hole on the opposite side of the duct to 1 to 2 ft 0 3 to 0 6 m ST 1 5 allow for moisture drainage 2 to 4 ft
17. minute 0 5 to 20 32m s Be sure to check engineering specifications to ensure that the air velocity in the duct falls within these parameters If necessary use a velocity meter to check the air velocity in the duct See Air Flow Test section 9 1 2 Drill The Mounting Holes Remove the paper supplied Affix the template to the duct at the desired mounting location backing from the mounting template Make sure the template lies flat and smooth on the duct Center punch holes A and B Drill the holes as indicated on the template 2 1 Sampling Tube Installation for Ducts Less Than 11 2 Feet 0 46m Wide see Figure 2 1 Remove the front cover 2 Slide the plastic sampling tube into the housing bushing 3 Align the holes in the bushing with the holes in the sampling tube Make sure there are 6 exposed holes on the plastic sampling tube Secure with the 8 self tapping screw into the bottom of the permanent tube shown in Fig 2 NOTE For ducts greater than 1 2 feet 0 46m in width refer to sec tions 4 4 1 and 4 2 3 Secure The Detector Housing To The Duct Slide the foam gaskets over the tube bushings as shown in Figure 3 Use the two 1 4 long sheet metal screws to screw the detector housing to the duct CAUTION Do not overtighten the screws 4 Sampling Tube Installation for Ducts Greater Than 172 Feet 0 46m Wide The sampling tube is identified by a series of air inlet holes on the tube A plastic
18. or Two 10 x 1 4 sheet metal mounting screws Two sampling tube filters One test magnet Drilling template Two foam gaskets Sy es os Four 6 self tapping mounting screws for the sampling tube and optional exhaust tube extension 8 One sampling tube end cap cover mounte 2 One plastic sampling tube ae 10 One 8 self tapping screw for plastic sampling tube NOTE A detector sensor board DOES NOT need to be ordered separately For ducts over 1 2 feet 0 46m longer sampling tubes must be ordered to complete the installation They must be the correct length for the width of the duct where they will be installed See Table 1 on page 3 to determine the sampling tube required for different duct widths D200 39 00 1 156 1977 004R Limitations of Duct Detectors The National Fire Protection Association has established that DUCT DETECTORS MUST NOT BE USED AS A SUBSTITUTE FOR OPEN AREA DETECTOR PROTECTION as a means of providing life safety Nor are they a substitute for early warning in a building s regular fire detection system It is strongly recommended that the user read NFPA Standards 90A 72 and 101 AWARNING This device will not operate without electrical power Fire situations may cause an interruption of power The system safeguards should be discussed with your local fire protection specialist AWARNING This device will not sense smoke unless the ventilation system is operat AWARNING In or
19. possible features available in the DH200RPL if supported by the control panel are 1 Panel controls the LED operation on sensor RED blink RED continuous and off Operational modes are 2 The remote output of the RA400Z does not follow the condition of the duct smoke detector LED while in standby When in alarm the LED output of the detector and remote will be identical Please refer to the operation manual for the UL listed control panel for specific operation of the DH20ORPL Wiring Instructions Disconnect power from the communication line before installing the DH200RPL duct smoke detector Wire the DH200RPL duct smoke detector per the Control Panel Installation Manual and Figures 9 10 or 11 Set the desired address on the sensor board address code wheel switches see Figure 7 Figure 7 Rotary Address Switches 7 Perform Detector Check 1 Perform STANDBY AND TROUBLE TEST per Section 9 2 1 2 Perform MAGNET TEST per Section 9 2 2 1 The RTS451 test of Section 9 2 2 2 may substitute for this requirement 3 Perform AIR FLOW TEST per Section 9 1 4 Perform SMOKE RESPONSE TEST per Section 9 1 1 8 Install The Cover Install the cover using the six screws that are captured in the housing cover Be certain filters are installed as specified in Section 5 Make sure that the cover fits into the base groove and that all gaskets are in their proper positions Tighten the six screws 9 Duct Smoke
20. re and record the voltage drop across the 10002 resistor measurement 1 4 00 volts is typical Using flexible tubing and rubber stoppers connect the HIGH side of the transmitter to the sampling tube of the duct smoke detector housing and the LOW side of the trans mitter to the exhaust tube of the duct smoke detector housing Measure and record the voltage drop across the 1000 resistor measurement 2 Subtract the voltage recorded in measurement 1 from the voltage recorded in measurement 2 If the difference is greater than 0 15 volts there is enough air flow through the duct smoke detector for proper operation Figure 8 Procedure for verifying air flow TO SAMPLING TUBE HIGH Low TO EXHAUST TUBE DIFFERENTIAL PRESSURE TRANSMITTER MODEL 607 01 15 TO 36VDC SUPPLY 9 VOLT BATTERY 1000 OHM 5 1 WATT RESISTOR Nw VOLT METER FLUKE MODEL 87 OR EQUIVALENT i H0163 01 9 1 5 Filter Replacement The filters do not substantially affect smoke performance even when up to 90 of the filter is clogged Quarterly visual inspection usually suf fices to determine whether the filters should be replaced because only a high percentage of contamination affects performance If further testing is required compare differential pressure readings with and without the filters installed If the difference exceeds 10 replace the filters In no case should the pressure dif
21. t opposite the hole already cut for the sampling tube Make sure the hole is 1 to 2 25 to 50mm below the inlet hole on the opposite side of the duct to allow moisture drainage away from the detector If the tube is shorter than the width of the air duct install the end cap into the sampling tube as shown in Figure 4 Sampling tubes over 3 ft 0 91m long must be supported at the end opposite the duct smoke detector D200 39 00 156 1977 004R 2 Slide the tube into the housing bushing that meets the air flow first Figure 5 Tube mounting configurations with varying Position the tube so that the arrow points into the air flow as shown air flow direction in Figure 4 DOTS INDICATE POSITION OF SAMPLING TUBE HOLES 3 Secure the tube flange to the housing bushing with two 6 self tapping AIR FLOW AIR FLOW screws DIRECTION DIRECTION DETECTOR DETECTOR 4 For tubes longer than the width of the air duct the tube should extend HOUSING HOUSING out of the opposite side of the duct If there are more than 2 holes in the section of the tube extending out of the duct select a different A B length using Table 1 Otherwise trim the end of the tube protruding SAMPUNG Be ae ee through the duct so that 1 to 2 25 to 50mm of the tube extend HORIZONTAL MOUNTING OF HOUSING outside the duct Plug this end with the end cap and tape closed any holes in the protruding section of t
22. tube is included for ducts up to 1 2 feet 0 46m wide All other lengths must be purchased separately Order the correct length as speci fied in Table 1 for width of the duct where it will be installed It is recom mended that the sampling tube length extend at least 7 3 across the duct width for optimal performance The exhaust tube is molded onto the base of the duct housing and the A2440 00 Exhaust Tube Extension is available as an accessory in those cases where the molded exhaust port does not extend at least 2 inches 50mm into the duct The sampling tube is always installed with the air inlet holes facing into the air flow To assist proper installation the tube s mounting flange is marked with an arrow Make sure the sampling tube is mounted so that the arrow points into the air flow see Figure 4 Figure 5 shows the various combinations of tube mounting configurations with respect to air flow Mounting the detector housing in a vertical orientation is acceptable provided that a metal sampling tube is installed and the air flows directly into the sampling tube holes as indicated in Figure 4 D Figure 2 Plastic sampling tube oO connected to duct smoke detector q lt SSjpvV_ q a 4 1 Installation For Ducts Greater Than 11 2 Feet 0 46m But Less Than 8 Feet 2 4m Wide 1 If the tube is longer than the width of the air duct drill a 3 4 19mm hole in the duc
23. y when the longer sampling tubes are used In these cases a 3 inch 75mm floor flange available at most plumb ing supply stores may be used to fasten the sampling tube to the other side of the duct When using the flange connector mounting technique drill a l inch to 1 4 inch 25 to 32mm hole where the flange will be used 5 Install The Filters To install the sampling tube filters simply push the filters into the sam pling and exhaust tube holes as shown in Figure 6 If a metal sampling tube is used install the filters into the tube end ACAUTION Filters require periodic cleaning or replacement depending on the amount of dust and dirt accumulated Visually inspect the filters at least quarterly inspect them more often if the dust accumulation warrants it See Section 9 1 2 for more information Replacement filters can be ordered filter P N F36 09 11 Figure 6 Sampling tube filter installation OD p pus a 6 Field Wiring Installation Guidelines All wiring must be installed in compliance with the National Electrical Code and the local codes having jurisdiction Proper wire gauges should be used The conductors used to connect smoke detectors to control panels and accessory devices should be color coded to prevent wiring mistakes Improper connections can prevent a system from responding properly in the event of a fire For signal wiring the wiring between detectors or from detectors to
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