System Sensor DH100ACDCLP Smoke Alarm User Manual
Contents
1. 2 5 Installation SCQUENCE cccccccccccceseeeessssseeeececeeeeessetaeees 2 6 Duct Smoke Detector Maintenance and Test Procedures 5 7 Detector Cleaning Procedures csscceeeeeeeesteeeeneeeeenees 7 8 Board Replacement saneren 8 9 Specifications cccccceeessssececceccesceeessssseeeeceeeeeeesssssaeees 8 Warranty sa ssasstisievsesseceshesstuy ences sevdehenadloee seas ccdeheecdugeedeusccuaponceas 8 1 General Description An HVAC system supplies conditioned air to virtually every area of a building Smoke introduced into this air duct system will be distributed throughout the entire building Smoke detectors designed for use in air duct systems are used to sense the presence of smoke in the duct Model DH100ACDCLP Air Duct Smoke Detector utilizes photoelectric technology for the detection of smoke This detection method when combined with an efficient hous ing design samples air passing through the duct and allows detection of a developing hazardous condition When suf ficient smoke is sensed an alarm signal is initiated and appropriate action can be taken to shut off fans blowers change over air handling systems etc These actions can facilitate the management of toxic smoke and fire gases throughout the areas served by the duct system The DHI100ACDCLP detector is designed to operate on 24 VDC VAC 120 VAC or 240 VAC Alarm and supervi sory relay contacts are available for control panel interfac2. defects in materials and workmanship under normal use and service for a period of three 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 commencing with the date of manufacture After phoning System Sensor s toll free number 800 SENSOR2 736 7672 for a Returns 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 unreasonable use modifications or alterations occurring after the date of manufacture 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 the loss or damage is caused by the Company s negligence or fault Some states do not allow the exclu sion or limitation of incidental or consequential
3. damages so the above limitation or exclusion may not apply to you This Warranty gives you specific legal rights and you may also have other rights which vary from state to state D200 14 00 156 0084 08R 2003 System Sensor 945B 0505
4. test module with a voltmeter to check detector sensitivity as indicated in the test module s manual The housing cover must be removed to perform this test If test module readings indicate that the detector head is outside of the acceptable range that is printed on the label of the detector the detector chamber requires cleaning per Section 7 of this manual 7 Detector Cleaning Procedures Notify the proper authorities that the smoke detector sys tem is undergoing maintenance and that the system will temporarily be out of service Disable the zone or system undergoing maintenance to prevent unwanted alarms and possible dispatch of the fire department 7 1 Air Filters 1 Turn off power to the system 2 Remove and inspect sampling tube filters 3 If filters are heavily coated with dirt replace them with new filters If they are not heavily coated use a vacuum cleaner or compressed air nozzle to remove dust then reinstall the filters 7 2 Photo Detector Board 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 D200 14 00 156 0084 08R loosen and blow out any remaining debris Replacement screens 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 pla
5. the cover has been missing or not secured properly for more than 7 minutes secure cover properly or the unit is defective return for repair Test The trouble condition can be caused intentionally to verify correct operation of the system Remove the detector board to cause a trouble condition locally and at the system control panel Cover Tamper If the cover is removed or not properly secured for a period longer than 7 minutes a trouble signal is generated to indicate the cover is missing 6 2 2 Alarm Tests 6 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 housing Figure 14 2 The red alarm LED on the detector should latch on as should any accessories i e RA400Z RTS451 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 must be reset by system control panel front cover reset button or remote accessory 6 2 2 2 RTS451 RTS451KEY Remote Test Station The RTS451 RTS451KEY Remote Test Station facilitates test of the alarm capability of the duct smoke detec tor as indicated in the RTS451 RTS451KEY manual The DHI100ACDCLP duct smoke detector can be reset by the RTS451 RTS451KEY If a system control panel is used the panel itself may also require testing To install the RTS451 RTS451KEY connect the device as shown in Figure 10 w
6. 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 ori entation is acceptable provided that the air flows directly into the sampling tube holes as indicated in Figure 4 Table 1 Sampling tubes recommended for different duct widths Outside Duct Width Sampling Tube Recommended 1 to 2 ft ST 1 5 2 to 4 ft ST 3 4 to 8 ft ST 5 8 to 12 ft ST 10 Must extend a minimum of 2 3 the duct width 5 4 1 Installation For Ducts Greater Than 1 Feet But Less Than 8 Feet Wide 1 If the tube is longer than the width of the air duct drill a 3 4 hole in the duct opposite the hole already cut for the sampling tube Make sure the hole is 1 to 2 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 long must be supported at the end oppo site the duct smoke detector 2 Slide the tube into the housing bushing that meets the air flow first Position the tube so that the arrow points into the air flow 3 Secure the tube flange to the housing bushing with two 6 self tapping screws 4 For tubes longer than the width of the air duct the tube
7. 15 volts there is enough air flow through the duct smoke detector for proper operation Figure 7 Procedure for verifying air flow HIGH TO SAMPLING TUBE TO EXHAUST TUBE Q LOW DIFFERENTIAL PRESSURE TRANSMITTER MODEL 607 01 15 TO 36VDC SUPPLY 4 svor BATTERY 9 VOLT BATTERY 1000 OHM 5 1 WATT RESISTOR 9 VOLT BATTERY VOLT METER FLUKE MODEL 87 OR EQUIVALENT H0163 01 6 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 suffices 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 differen tial fall below 0 0015 inches of water 6 2 Standby Alarm and Sensitivity Tests The cover must be removed to perform these tests The use of a remote accessory for visible indication of power and alarm is recommended 6 2 1 Standby And Trouble Standby Look for the presence of the flashing green LED The LED should flash approximately every 10 seconds D200 14 00 156 0084 08R Figure 8 System wiring diagram for 4 wire duct smoke detectors Do not loop wire under termina
8. 8A 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 This device will not sense smoke unless the ventilation system is operating and the cover is installed For this detector to function properly it MUST be installed according to the instructions in this manual Furthermore the detector MUST be operated within ALL electrical and environmental specifications listed in this manual Failure to comply with these requirements may prevent the detec tor from activating when smoke is present in the air duct D200 14 00 156 0084 08R 3 Figure 1 Exploded View of Duct Smoke Detector Components FOAM GASKETS CONDUIT HOLES DETECTOR TERMINAL STRIP POWER BOARD 4 Contents Of The Duct Smoke Detector Kit Complete housing base and cover assembly Two 10 x 1 s sheet metal screws for mounting Two sampling tube filters One test magnet Drilling template Two foam gaskets Four 6 self tapping mounting screws for the metal sampling tube and optional exhaust tube extension 8 One sampling tube end cap 9 One plastic sampling tube 10 One 8 self tapping screw for the plastic sampling tube NOTE For ducts over 1 4 feet longer sampling tubes must be ordered to complete the installation They must be the correct length for the width of the duct where
9. 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 NOTE Air currents inside the duct may cause excessive vibration especially when the longer sampling tubes are used In these cases a 3 floor flange available at most plumbing 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 1 to 14 hole where the flange will be used 5 4 3 Modifications of Sampling Tubes There may be applications where duct widths are not what is specified for the installation In such cases it is permis sible to modify a sampling tube that is longer than neces sary to span the duct width Use a 0 193 inch diameter 10 drill and add the appro priate number of holes so that the total number of holes exposed to the air flow in the duct is 10 to 12 Space the additional holes as evenly as possible over the length of the tube NOTE This procedure should only be used as a temporary fix It is not intended as a permanent substitute for ordering the correct length tubes 5 5 Install The Filters To install the sampling tube filters simply push the filters into the sampling and exhaust tube holes as shown in Figure 6 If a metal sampling tube is used install the filters over the tube ends Figure 6 Sampling tube filter i
10. INSTALLATION AND MAINTENANCE INSTRUCTIONS Innova DHLOOACDCLP Air Duct Smoke Detector with Extended Air Speed Range SYSTEM S9 SENSOR 3825 Ohio Avenue St Charles Illinois 60174 1 800 SENSOR2 FAX 630 377 6495 www systemsensor com The Innovair DHIO0ACDCLP model is a photoelectric detector approved for an extended air speed range of 100 to 4000 feet per minute 0 5 m s to 20 3 m s and an opera tional temperature range of 32 F to 131 F 0 C to 55 C Before Installing Please thoroughly read the System Sensor Guide for Proper Use of Smoke Detectors in Duct Applications A05 1004 which provides detailed information on detector spacing placement zoning wiring and special applications Copies of this manual are available online at www systemsensor com or via System Sensor s toll free fax back service Documents on Demand at 800 736 7672 NFPA Standards 72 and 90A should also be referenced 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 following NFPA 72 requirements The detector should be cleaned at least once a year Table of Contents Page 1 General Description c cccccccccceesessssssseeeceeceeeesessseeenes 1 2 Limitations of Duct Smoke Detectors cceeeeeeees 1 3 Exploded View of Duct Smoke Detector Components 2 4 Contents of the Duct Smoke Detector Kit
11. ce It should fit tightly on the chamber 8 0 Board Replacement 8 1 Detector Board Replacement part no A5190 1 Remove the two detector board mounting screws 2 Pull gently on the board to remove it 3 To replace the board align the board mounting fea tures holes and the interconnect terminals Push the board into place Secure board with the two mounting screws 8 2 Power Board replacement part no A5064 Disconnect wiring from the terminal block Remove the two power board mounting screws Pull gently on the board to remove it To replace the board align the board mounting fea tures holes and the interconnect terminals Push the pevnr 9 Model DH100ACDCLP Air Duct Smoke Detector Specifications 32 to 131 F 22 to 158 F Operating Temperature Storage Temperature 0 to 55 C 30 to 70 C Humidity 10 to 93 R H noncondensing Air Velocity 100 to 4000 ft min 0 5 to 20 3 m sec Dimensions 14 38 L x 5 5 Wx 2 75 D 37cm L x 14cm W x 7cm D Weight 3 75 pounds 1 7 kg Electrical Specifications Power supply voltage 20 29 VDC 24 VAC 50 60 Hz 120 VAC 50 60 Hz 220 240 VAC 50 60 Hz Input capacitance 270 uF max 270 pF max N A N A Reset voltage 3 0 VDC min 2 0 VAC min 10 VAC min 20 VAC min Reset time with RTS451 03 to 0 3 sec 03 to 0 3 sec 03 to 0 3 sec 03 to 0 3 sec Reset time by power down 0 6 sec max 0 6 sec max 0 6 sec max 0 6 sec max Pow
12. e alarm initiation HVAC control and other auxiliary func tions Auxiliary relays are also provided for fan shut down or signaling of up to 9 other detectors in the loop for mul tiple fan shut down These detectors are not designed for 2 wire applications For testing the alarm can be enabled by a magnet activated test switch or by the optional remote test station The duct smoke detector latches into alarm state when an alarm occurs A green LED flashes to indicate power a red LED signals local alarm indication and optional accessories offer a variety of annunciation capabilities The DHIOOACDCLP can be reset by a momentary power interruption the reset button on the front cover the con trol panel or remote reset accessory The DHIOOACDCLP incorporates a cover tamper feature that provides a trouble signal after 7 minutes if the cover is removed or improperly installed Proper installation of the cover removes the trouble condition 2 Limitations Of Duct Smoke Detectors AWARNING 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 warn ing in a building s regular fire detection system System Sensor supports this position and strongly recom mends that the user read NFPA Standards 90A 72 and 101 The DHIOOACDCLP Air Duct Smoke Detectors are listed per UL 26
13. er up time 34 sec max 34 sec Max 34 sec max 34 sec max Alarm response time 2 to 17 sec 2 to 17 sec 2 to 17 sec 2 to 17 sec Sensitivity Test Power Supply Voltage 20 29 VDC 24 VAC 50 60 Hz 120 VAC 50 60 Hz 220 240 VAC 50 60 Hz CURRENT REQUIREMENTS USING NO ACCESSORIES Max standby current 35 mA RMS 25 mA RMS 15 mA RMS See detector label See detector label See detector label See detector label CONTACT RATINGS Alarm initiation contacts SPST 2 0A 30 VDC resistive 10A 30 VDC 10A 250 VAC 1 4 HP 240 VAC 1 8 HP 120 VAC Alarm auxiliary contacts DPDT Note Alarm auxiliary contacts must switch 100 mA minimum at 5VDC Alarm auxiliary contacts shall not be connected to inititaing circuits of control panels Use the alarm initiation contact for this purpose Trouble contacts SPDT 2 0A 30 VDC resistive 2 0A 125 VAC resistive 0164 00 STANDBY TROUBLE 12 5mA Max 30mA Max 15mA Max 10mA Max 7 5mA Max RTS451KEY 7 5mA Max SSK451 9mA Max 30mA Max NOTE When a unit is powered at the 120VAC or 220 240VAC input any combination of accessories may be used such that the given accessory loads are 60 mA or less in the standby state 110 mA or less in the alarm state APA451 RA400Z RTS451 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
14. ire runs must be limited to 25 ohms or less per interconnecting wire Figure 13 Wiring diagram for DHLOOACDCLP to SSK451 FIELD INSTALLED JUMPER FOR TEMPORAL PATTERN SSk451 DH100ACDCLP COMMON TEMPORAL SELECT 2 ALARM SIGNAL 1 15 ALARM SIGNAL SUPERVISORY SIGNAL 4 _ SUPERVISORY acs CONTACT RESET RESET TEST Q TEST POWER i AUX POWER POWER Q AUX POWER FIELD INSTALLED JUMPER HO0162 00 NOTE Wiring diagram shown is for DH100ACDCLP 4 wire duct smoke detector system equipped without a control panel Please note that the magnetic coil supplied with the RTS451 and RTS451KEY is not required when these accessories are used with the DH100 Series detectors The functionality of the magnetic coil has been designed into the circuitry of the new Innovair duct smoke detectors 6 2 2 3 SSK451 Multi Signaling Accessory The System Sensor SSK451 Multi Signaling accessory com bines a sounder feature with a key activated test and reset function Green amber and red LEDs provide a visual indication of power trouble and alarm respectively An optional strobe PS24LO with a smoke lens can be added to conform to the codes of certain jurisdictions To install the SSK451 connect the device as shown in Figure 13 6 2 3 Sensitivity Tests 6 2 3 1 MOD400 or MOD4OOR Test After verification of alarm capability use the MOD4OOR
15. ke detector NOTE For ducts greater than 1 4 feet in width refer to sections 5 4 1 and 5 4 2 Figure 2 Plastic sampling tube connected to duct smoke detector HO0110 00 5 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 Figure 3 Installation of foam gaskets over sampling tube bushings SCREW HOLES FOR ATTACHING HOUSING TO DUCT WORK H0107 00 D200 14 00 156 0084 08R 5 4 Sampling Tube Installation for Ducts Greater Than 1 Feet Wide The sampling tube is identified by a series of air inlet holes on the tube A plastic tube is included for ducts up to 18 in width All other lengths must be purchased separately Order the correct length as specified in Table 1 for width of the duct where it will be installed It is recommended that the sampling tube length extend at least 4 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 acces sory in those cases where the molded exhaust port does not extend at least 2 inches 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
16. ls when wiring detectors Break wire runs to provide system supervision of connections AVAILABLE POWER INPUTS POWER INPUTS ACCEPT TROUBLE CONTACTS CLOSED IN ALARM AND STANDBY CONTACTS OPEN WHILE DETECTOR PCB OR POWER IS REMOVED OR WHEN TAMPER FEATURE TIMES OUT OPEN CONTACTS SIGNAL TROUBLE CONDITION TO PANEL 24 VDC 24 VAC 50 60 HZ 9 10 A B c CONNECT POWER SOURCE TO APPROPRIATE TERMINALS OF EACH DETECTOR t Fi 24V 120 VAC 220 240 VAC ALARM AUXILIARY CONTACTS FOR FAN SHUTDOWN ETC AUX CONTACT RATINGS l 16 6 17 T 18 8 l 10A 30 VDC RESISTIVE 100mA MINIMUM 5 VDC 1 4 HP 240 VAC PAE een N C cy No N o C N C NOT INTENDED FOR CONNECTION TO CONTROL PANELS S w ALARM AUXILIARY CONTACTS SHOWN IN STANDBY CONTACTS TRANSFER DURING ALARM AS INDICATED BY THE ARROWS TROUBLE CONTACT RATING SUPERVISORY TROUBLE CONTACTS i 2 0 A 30 VDC resistive 2 0 A 125 VAC resistive l 14 3 CONTACTS SHOWN OPEN IN STANDBY CONTACTS CLOSE IN ALARM INITIATION INITIATION LOOP CONTACTS UL LISTED 4 WIRE CONTROL PANEL FIRST DETECTOR IN THE LOOP DH100ACDCLP Figure 9 Wiring diagram for DHLOOACDCLP to APA451 DH100ACDCLP Alarm Signal APA451 Alarm Red LED Power Green LED Aux Power NOTE Wiring diagram shown is for DH100ACDCLP 4 wire duct smoke detector system equipped without a control panel 0157 00 Figure 11 Multiple fa
17. ly without a Sup N O control panel 6 Green LED Aux Power Reset 0156 00 Important Interconnect Notes e When using the interconnect feature all interconnected units must be powered with the same independent supply Polarity must be maintained throughout 0000000000 opooogploooo O00 ABC DETECTOR 10 the interconnect wiring Connect termi I L_ SYSTEM CONTROL POWER OR HERMOSTAT SYSTEM FAN CONTROL FAN CONTROL POWER OR CONTROL IERMOSTAT H0155 01 nal 12 on unit 1 to terminal 12 on unit 2 and so on Similarly connect terminal 1 on unit 1 to terminal 1 on unit 2 and so on Up to 10 units may be interconnected SYSTEM FAN CONTROL CONTROL POWER OR HERMOSTAT D200 14 00 6 156 0084 08R Figure 12 Wiring diagrams for optional accessories 15 15 ALARM SIGNAL OS ALARM SIGNAL P Zz SS AUX POWER oy AUX POWER ED 0 0 DUCT DETECTOR DH100ACDCLP PA400 OPTIONAL AUDIBLE ALERT DUCT DETECTOR RA400Z OPTIONAL DH100ACDCLP REMOTE LED ANNUNCIATOR H0161 00 Figure 14 Testing detector alarm H0160 00 Trouble If the detector LED does not flash then the detector lacks power check wiring panel or power supply the detector board is miss ing replace
18. n shutdown interconnect OOOOOGOC000 000 O09 T A BG ABS OUT TO 10 DETECTORS MAXIMUM DETECTOR 1 DETECTOR 2 AVAILABLE POWER INPUTS CONNECT POWER SOURCE 9 10 A B c TO APPROPRIATE TERMINALS OF EACH DETECTOR SEE SPECIFICATIONS FOR ADDITIONAL POWER SUPPLY INFORMATION 120 awd VAC 220 240 VAC ALARM AUXILIARY CONTACTS FOR FAN SHUTDOWN ETC 16 6 T C DEVICES REFER TO 17 18 8 N C N O N O 3 N C MANUFACTURER S INSTALLATION INSTRUCTIONS A i OR CONTACT MANUFACTURER ALARM AUXILIARY CONTACTS SHOWN IN STANDBY CONTACTS TRANSFER DURING ALARM AS INDICATED BY THE ARROWS NOTE THE SUPERVISORY RELAY NOW PROVIDES A FORM C CONTACT FOR CUSTOMIZED APPLICATIONS FOR STANDARD APPLICATIONS ONLY THE NO CONTACT IS USED 1 SUPERVISORY TROUBLE CONTACTS TROUBLE CONTACTS CLOSED IN ALARM AND STANDBY CONTACTS OPEN WHILE DETECTOR PCB OR POWER IS REMOVED OR WHEN TAMPER FEATURE TIMES OUT OPEN CONTACTS SIGNAL TROUBLE CONDITION TO PANEL l l l l l l l FOR WIRING OF AUXILIARY CONTACTS SHOWN OPEN IN STANDBY CONTACTS CLOSE IN ALARM INITIATION CONTACTS L od LAST DETECTOR IN THE LOOP SPECIERDIGY DH100ACDCLP PANEL MANUFACTURER H0158 01 Figure 10 Wiring diagram for DH100ACDCLP to RTS451 RTS451KEY DH100ACDCLP RTS451 RTS451KEY Alarm Signal Red LED Alarm Aux Power For RTS451KEY l on
19. nstallation H0159 00 Filters require periodic cleaning or replacement depend ing 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 6 for more information Replacement filters can be ordered from System Sensor 3825 Ohio Ave St Charles IL 60174 Exhaust tube intake tube filter P N F36 09 11 5 6 Field Wiring Installation Guidelines All wiring must be installed in compliance with the National Electrical Code and the local codes having juris diction Proper wire gauges should be used The conduc tors 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 interconnected detectors or from detectors to auxiliary 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 Smoke detectors and alarm system control panels have specifications for allowable loop resistance Consult the control panel manufacturer s specifications for the total loop resistance allowed for the particular model control panel being used before wiring the detector loop Wiring Instructions The DH100ACDCLP detectors are designed fo
20. ntry hole Aerosol smoke can be purchased from Home Safeguard Industries Malibu CA Phone 310 457 5813 6 1 3 Smoke Entry Test To determine if smoke is capable of entering the sens ing 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 6 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 transmit ter as shown in Figure 7 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 measure 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 transmitter to the exhaust tube of the duct smoke detec tor housing Measure and record the voltage drop across the 1000Q resistor measurement 2 Subtract the voltage recorded in measurement 1 from the voltage recorded in measurement 2 If the difference is greater than 0
21. perate over an extended air speed range of 100 to 4000 FPM To verify sufficient sampling of ducted air turn the air handler 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 6 1 4 or 2 the use of aerosol smoke per sec tion 6 1 2 6 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 differential pressure between the sampling tubes as described in 6 1 1 Drill a 1 4 hole 3 feet upstream from the duct smoke detec tor 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 4 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 e
22. r easy wiring The housing provides a terminal strip with clamping plates Wiring connections are made by stripping about 8 of insulation from the end of the wire sliding the bare end under the plate and tightening the clamping plate screw 5 7 Perform Detector Check 1 Perform STANDBY AND TROUBLE TEST per Section 6 2 1 2 Perform MAGNET TEST per Section 6 2 2 1 The RTS451 test of Section 6 2 2 2 may substitute for this requirement 3 Perform AIR FLOW TEST per Section 6 1 1 4 Perform SMOKE RESPONSE TEST per Section 6 1 2 5 Perform SENSITIVITY TEST per Section 6 2 3 5 8 Install The Cover Install the cover using the six screws that are captured in the housing cover Be certain filters are installed as speci fied in Section 5 5 Make sure that the cover fits into the base groove and that all gaskets are in their proper posi tions Tighten the six screws D200 14 00 156 0084 08R 6 Duct Smoke 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 personnel 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 zone or system under test to prevent unwanted alarms 6 1 Smoke Entry Tests 6 1 1 Air Flow The DH100ACDCLP is designed to o
23. should extend 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 length using Table 1 Otherwise trim the end of the tube protruding through the duct so that 1 to 2 of the tube extend out side 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 NOTE The sampling tube end cap is critical to the proper operation of the duct smoke detector The end cap is needed to create the proper air flow to the sensor of the duct smoke detector Figure 4 Air duct detector sampling tube MUST FACE AIR FLOW DIRECTION INTO AIR FLOW H0108 02 Figure 5 Tube mounting configurations with varying air flow direction DOTS INDICATE POSITION OF SAMPLING TUBE HOLES AIR FLOW DIRECTION DETECTOR HOUSING AIR FLOW DIRECTION DETECTOR HOUSING SAMPLING EXHAUST EXHAUST MP TUBE TUBE TUBE TUBE HORIZONTAL MOUNTING OF HOUSING DETECTOR HOUSING EXHAUST AIR FLOW TUBE DIRECTION AIR FLOW DIRECTION DETECTOR HOUSING SAMPLING c TUBE VERTICAL MOUNTING OF HOUSING H0109 01 NOTE Only metal sampling tubes may be used on orientations C and D 5 4 2 Installation For Ducts More Than 8 Feet Wide NOTE To install sampling tubes in ducts more than 8 feet wide work must be performed inside
24. the air duct Sampling of air in ducts wider than 8 feet 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 in Figure 4 and support the end opposite the duct smoke detector Install the sampling tube as follows 1 Drill a 7 4 hole in the duct directly opposite the hole already drilled for the sampling tube Make sure the hole is 1 to 2 below the inlet hole on the opposite side of the duct to allow for moisture drainage 2 Slide the sampling tube with the flange into the housing bushing that meets the air flow first Position the tube so that the arrow points into the air flow Secure the tube flange to the housing bushing with two 6 self tapping screws D200 14 00 156 0084 08R 3 From inside the duct couple the other sections of the sampling tube to the section already installed using the 1 2 conduit fittings supplied Make sure that the holes on both of the air inlet tubes are lined up and facing into the air flow 4 Trim the end of the tube protruding through the duct so that 1 to 2 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 when the tube protrudes NOTE An alternate method to using the ST 10 is to use two ST 5 inlet tubes Remove the flange from one of the tubes and install as described above
25. they will be installed See Table 1 on page 3 to determine the inlet tube required for different duct widths VON Rog a 5 Installation Sequence 5 1 Verify Duct Air Flow Direction And Velocity Model DH100ACDCLP detectors are designed to be used in air handling systems having air velocities of 100 to 4000 feet per minute 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 anemom eter to check the air velocity in the duct 5 2 Drill The Mounting Holes Remove the paper backing from the mounting template supplied Affix the template to the duct at the desired mounting location 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 5 2 1 Sampling Tube Installation for Ducts Less Than 1 Feet 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 COVER MOUNTING SCREWS HO0165 00 NOTE The sampling tube end cap is critical to the proper operation of the duct smoke detector The end cap is needed to create the proper air flow to the sensor of the duct smo
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