D4120W Duct Smoke Detector
Contents
1. 50 DET Q 0 DETECTOR 1 DETECTOR 2 SYSTEM CONTROL SYSTEM CONTROL POWER FAN POWER FAN CONTROL OR CONTROL OR THERMOSTAT THERMOSTAT H0552 01 FIGURE 9 MULTIPLE FAN SHUTDOWN INTERCONNECTION OF D4120W TO DH100ACDC DH100ACDC DH100ACDC D4120W D4120W D4120W H0617 01 11 1 IMPORTANT INTERCONNECTION NOTES e When using the interconnect feature all interconnected units must be powered using the same independent supply e Polarity must be maintained throughout the interconnect wiring Connect the INT terminal on unit 1 to the INT terminal on unit 2 and so on Similarly connect the INT AUX terminal on unit 1 to the INT AUX terminal on unit 2 and so on e Up to 50 D4120W units may be interconnected e Upto 10 DHIO0ACDC units may be interconnected Please note that each of the 9 DHI00ACDC units interconnected can be substituted by three D4120W units Therefore when using the interconnect feature a single DHI100ACDC can drive either 9 DH100ACDC s or 27 D4120W units NOTE Alarm can be reset only at the initiating device and not at the devices interconnected 12 VERIFICATION OF OPERATION 12 1 FIELD SELECTABLE SETTINGS Verify dipswitch settings as per Table 2 on Page 5 12 2 POWERING THE UNIT Apply 24 VDC power to 9 and 10 terminals on the D4120W or apply 120 VAC on terminals named 120VAC See Figure 7 and electrical specifications for details 12 3 PERFORM DETE2. 4 inch 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 at home safeguard com model 25S Smoke Detector Tester and Chekkit Smoke De tector Tester model CHEK02 and CHEK06 available from SDi When used properly the canned smoke agent will cause the smoke detector to go into alarm Refer to the manufacturer s published instructions for proper use of the canned smoke agent ACAUTION Canned aerosol simulated smoke canned smoke agent formulas will vary by manufacturer Misuse or overuse to these products may have long term ad verse effects on the smoke detector Consult the canned smoke agent manufac turer s published instructions for any further warnings or caution statements 12 6 INSTALL THE COVER Install the covers making sure that the cover fits into the base groove Tighten the seven screws that are captured in the covers 156 3046 004R 13 DETECTOR CLEANING PROCEDURES Notify the proper authorities that the smoke detector system is undergoing maintenance and that the system will temporarily be out of service Disable the zone or system undergoing maintenance to prevent unwanted al
3. one of the mounting tabs on the lower housing 5 4 SECURE THE DUCT DETECTOR TO THE DUCT Use two rectangular configuration or three square configuration of the pro vided sheet metal screws to screw the duct detector to the duct CAUTION Do not overtighten the screws 6 SAMPLING TUBE INSTALLATION 6 1 SAMPLING TUBE SELECTION The sampling tube 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 3 across the duct width for optimal performance TABLE 1 SAMPLING TUBES RECOMMENDED FOR DIFFERENT DUCT WIDTHS Outside Duct Width Sampling Tube Recommended Up to 1 ft DST1 8 to 12 ft DST10 2 piece Must extend a minimum of 3 the duct width These sampling tubes can only be used with new InnovairFlex duct smoke detectors The sampling tube is always installed with the air inlet holes facing into the air flow To assist proper installation the tube s connector is marked with an arrow Make sure the sampling tube is mounted so that the arrow points into the airflow as shown in Figure 3 Mounting the detector housing in a vertical orientation is acceptable provided that the air flows directly into the sampling tube holes as indicated in Figure 3 The sampling tube and exhaust tube can be mounted in either housing connection as long as the exhaust tube is mounted downstream from the
4. panel See specifications for contact ratings NOTE 3 Supervisory contacts shown in standby position Open contacts indi cate a trouble condition to the panel See specifications for contact ratings NOTE 4 Alarm Initiation contacts shown in standby position Closed contacts indicate an alarm condition to the panel See specifications for contact ratings TABLE 2 DIP SWITCH SETTINGS POWER INPUTS NOTE 1 merone SoSo OR AUXILIARY CONTACTS FOR FAN SHUTDOWN ETC NOTE 2 AUXA AUX B NC N O NC C N Q 16 6 17 18 7 SUPERVISORY CONTACTS NOTE 3 EOL RESISTOR SPECIFIED BY PANEL MANUFACTURER SUP N O SUP C ALARM ALARM N O INITIATION CONTACTS NOTE 4 ALARM C H0558 07 LAST DETECTOR IN THE LOOP 9 UNIT CONFIGURATION A three position dipswitch is included in order to configure the setup of the unit One switch is used to determine it there are one or two sensors con nected to the Power Board The second switch selects an instantaneous or 7 minute tamper delay A tamper condition indicates that the cover of the sensor housing has been removed or has not been secured properly The third switch is used to turn the Shutdown On Trouble feature on or off With this feature turned on the Aux Relay will switch states when a Trouble Condition occurs Trouble is indicated when the Supervisory Relay switches state Termi nals 3 and 14 are open in a Trou
5. the holes on both sections of the air inlet sampling tube are lined up and facing into the airflow 2 For tubes longer than the width of the duct the tube should extend out of the opposite side of the duct Drill a 3 4 inch hole in the duct opposite the hole already cut for the sampling tube Ensure that the sampling tube is angled downward from the duct smoke detector to allow for moisture drainage away from the detector The sampling tube should be angled at least 1 4 downward for every 12 of duct width per Figure 4 There should be 10 to 12 holes spaced as evenly as possible across the width of the duct If there are more than 2 holes in the section of the tube extend ing out of the duct select a shorter tube using Table 1 Otherwise trim the tube to leave approximately 1 to 2 inches extending outside the duct Plug the end with the end cap and tape closed any holes in the protrud ing section of tube Be sure to seal the duct where the tube protrudes FIGURE 4 gt ee ee ia 3 4 HOLE DETECTOR H0215 00 NOTE Air currents inside the duct may cause excessive vibration especially when the longer sampling tubes are used In these cases a 3 inch floor flange available at most plumbing supply stores may be used to fasten the sam pling tube to the other side of the duct When using the flange connector mounting technique drill a 1 to 1 4 inch hole where the flange will be used 6 3 MODIFICATIONS OF SAMP
6. BSTITUTE 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 System Sensor supports this position and strongly recommends that the user read NFPA Standards 90A 72 and 101 The D4120W Air Duct Smoke Detec tors are listed per UL 268A 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 in structions 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 detector from activating when smoke is present in the air duct 156 3046 004R SENSOR Ur00 9P0E 9S 2 FIGURE 1 EXPLODED VIEW OF DUCT SMOKE DETECTOR COMPONENTS EXHAUST TUBE A METAL SAMPLING TUBE sold seperately 3 GENERAL DESCRIPTION Smoke introduced into an 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 D4120W Duct Smoke Detectors utilize 4 wire photoelectric techno
7. C resistive 10A 250 VAC resistive 1 2 HP 240 VAC 1 4 HP 120 VAC Alarm auxiliary contatcs DPDT NOTE Alarm auxiliary contacts shall not be connected to initiating circuits of control panels Use the alarm initiation contact for this purpose 2 0A 30 VDC resistive 2 0A 125 VAC resistive Supervisory Contacts SPDT TABLE OF CONTENTS PAGE 1 Limitations of Duct Smoke Detectors osannu nance renun 1 2 Exploded View of Duct Smoke Detector Components 2 3 General Description sy soseri iee ta cece EERE aE 2 4 Contents of Duct Smoke Detector Kit onon unana r area 2 5 Detector Installati n v 45 gerne n e aae a Ea EE EEES 2 6 Sampling Tube Installation 0 0 0 0 3 7 Measurement TESTS disiang a aoao ick tis ae aly Bt be dd 3 8 Field Wiring Installation Guidelines 0 000004 4 9 Unit Configuration sci pce eae oe eas ahead BA aa gle 5 10 Detector Status Indication n oonan anaue 6 11 Interconnection Multiple Fan Shut Down 6 12 Verification of Operation 1 2 20 0 0 eee eee 6 13 Detector Cleaning Procedures 0 0 0c cee eee eee 7 14 Sensor replacement 334 5025 sodesia aya ae bho d Sank Oh ee aS 7 15 Optional Accessories 0 0 e eect eee ee 7 Wiring Dia BLAIS 5 58205 p29 i larce cecarene apg woe ENE EAEE AE aang eae Such 5 7 Warranty i ae a E E EEE aves wee wee E ER shi 8 BEFORE INSTALLING T
8. CTOR CHECK VERIFY STANDBY AND TROUBLE TEST per Table 3 on page 8 The use of a remote accessory for visible indication of power and alarm is recommended NOTE If an instantaneous tamper delay is selected a trouble may be indicated with the cover installed S 300 010 12 4 SENSITIVITY VERIFICATION The sensitivity of the sensor is confirmed to be operating within its allowable range each time the sensor and power board LEDs blink green every 5 sec onds Note in a maintenance condition the sensor LEDs will blink red every 5 seconds and power board will blink amber as depicted in Table 3 on page 8 The maintenance condition indicates that the sensor is operating outside its original factory preset sensitivity and shall be cleaned or replaced See Section 9 for reference This is a valid UL test 12 5 DETECTOR CLEANING PROCEDURES Notify the proper authorities that the smoke detector system 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 12 5 1 ALARM TESTS la Test Reset Button Press and hold the test button located on the power board cover for at least 2 seconds OR 1b M02 04 00 Magnet Test Magnet sold separately Place the painted sur face of the magnet onto the MAGNET TEST location on the sensor cover of unit Figure 1 OR lc Remote Test Accessory See list on p
9. INSTALLATION AND MAINTENANCE INSTRUCTIONS Innovai D4120W Duct Smoke Detector 3825 Ohio Avenue St Charles Illinois 60174 1 800 SENSOR2 FAX 630 377 6495 www systemsensor com NOTE The D4120W duct detector consists of a Power Board and Sensor component SPECIFICATIONS Operating Temperature Storage Temperature Environmental Rating Humidity Air Velocity D4120W Footprint Dimensions 4 to 158 F 20 to 70 C 22 to 158 F 30 to 70 C NEMA 4 Type 4 Enclosure Watertight 0 to 95 Relative Humidity Non condensing 100 to 4000 ft min 0 5 to 20 3 m sec Rectangular 14 38 in L x 5 in W x 2 5 in D 37cm L x 12 7cm W x 6 36cm D Square 7 75 in L x 9 in W x 2 5 in D 19 7cm L x 22 9cm W x 6 35cm D D4120W Weight 2 5 pounds 1 14 kg Electrical Power supply voltage 20 29 VDC 24 VAC 50 60 Hz 120 VAC 50 60 Hz Input capacitance 270 pF max 270 pF max N A Reset Voltage 3 0 VDC min 2 0 VAC min 10 VAC min Reset Time with RTS451 RTS151 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 Power Up Time 35 sec max 35 sec max 35 sec max Alarm response time 15 sec 15 sec 15 sec Sensitivity Test See detector label Current Requirements Using No Accessories Max standby current 21 mA 24 VDC Max alarm current 65 mA 24 VDC CONTACT RATINGS Alarm initiation contacts SPST 2 0A 30 VDC resistive 10A 30 VD
10. LING TUBES There may be applications where duct widths are not what is specified for the installation In such cases it is permissible to modify a sampling tube that is longer than necessary to span the duct width Use a 0 193 inch diameter 10 drill and add the appropriate 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 and is not in tended as a substitute for ordering the correct length tubes 6 4 REMOTE SAMPLING TUBE INSTALLATION The detector arrangement can also incorporate remote mounting of the sam pling tube and or exhaust tube In this case both the detector sampling tube and exhaust tube if included should be rigidly mounted to withstand the pressure and vibrations caused by the air velocity The location of the detec tor s sampling tube should be such that there is uniform airflow in the cross section area The pressure differential across the sampling and exhaust ports in the detector housing shall be verified to be between 0 01 and 1 11 inches of water Do so by measuring the pressure difference between the inlet and outlet ports on the detector housing using a manometer as described in Section 7 1 7 MEASUREMENT TESTS 7 1 AIR FLOW The D4120W is designed to operate over an extended air speed range of 100 to 4000 FPM To verif
11. TALLATION 1 Reinstall the detector in its housing 2 Restore system power 3 Perform Detector Check Section 12 3 4 Notify the proper authorities testing has been completed and the smoke detector system is back in operation 14 SENSOR REPLACEMENT PART NO 2D51 1 Remove the sensor head by rotating counterclockwise 2 Pull gently to remove it 3 To replace the sensor head align the mounting features and rotate clock wise into place 15 OPTIONAL ACCESSORIES 15 1 RTS451 RTS151 RTS451KEY RTS151KEY REMOTE TEST STATION The RTS451 RTS151 RTS451KEY RTS151KEY Remote Test Station facilitates test of the alarm capability of the duct smoke detector as indicated in the RTS451 RTS151 RTS451KEY RTS151KEY manual The D4120W duct smoke detector can be reset by the RTS451 RTS151 RTS451 KEY RTS151KEY To install the RTS451 RTS151 RTS451KEY RTS151KEY connect the device as shown in Figure 13 wire runs must be limited to 25 ohms or less per interconnecting wire If a system control panel is used the panel itself may require testing S 300 010 15 2 RTS2 RTS2 AOS MULTI SIGNALING ACCESSORY The RTS2 and RTS2 AOS multi signaling accessories are designed for use with InnovairFlex 4 wire conventional duct smoke detectors only The accessory has two bicolored LEDs that indicate the sensor status of up to two connected duct smoke detectors The key switch on the unit can be used to select a connected duct detector sensor either se
12. achment hole as shown in Figure 2 Do NOT remove the hinge screw during this process Final installation approval shall be based upon passing section 7 2 2 and or 8 2 4 tests FIGURE 2 REMOVE SCREW AND PIVOT DETECTOR AS SHOWN BELOW REPLACE SCREW TO SECURE DETECTOR IN PLACE H0550 00 5 3 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 5 3 1 FOR RECTANGULAR SIDE BY SIDE MOUNTING CONFIGURATION Center punch at 4 target centers 2 A for sampling tubes and 2 B for the rectangular configuration mounting tabs as shown on mounting template Drill pilot holes at target A centers and cut two 1 375 inch diameter holes using a 13 s inch hole saw or punch Drill 156 inch diameter holes using a 5 32 inch drill at target B centers 156 3046 004R 5 3 2 FOR SQUARE TOP OVER BOTTOM MOUNTING CONFIGURATION OR D4S SENSOR COMPONENT MOUNTING Center punch at 4 target centers 2 A for sampling tubes and 2 C for the square configuration mounting tabs as shown on mounting template Drill pilot holes at target A centers and cut two 1 375 inch diameter holes using a 13 s inch hole saw or punch Drill 156 inch diameter holes using a 5 32 inch drill at target C centers If desired drill an additional 156 inch hole at the location of
13. age 1 The red alarm LED on the sensor and the power board should latch on as should any accessories i e RA400Z RA100Z RTS451 RTS151 Verify system control panel alarm status and control panel execution of all in tended auxiliary functions i e fan shutdown damper control etc 2 The detector must be reset by the system control panel front cover Test Reset button or remote accessory 3 To reset using the Test Reset button on the power board cover simply press and release 4 Verify airflow test per Section 7 has been performed 12 5 2 SMOKE RESPONSE TESTS To determine if smoke is capable of entering the sensing chamber visually identify any obstructions Plug the exhaust and sampling tube holes to pre vent 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 12 5 3 SMOKE ENTRY 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 Section 7 1 Drill a 1 4 inch 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. age 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 5 PROCEDURE FOR VERIFYING AIR FLOW LESS THAN 500 FPM TO SAMPLING TUBE TO EXHAUST TUBE O Suge O HIGH LO DIFFERENTIAL PRESSURE TRANSMITTER MODEL 607 01 15 TO 36 VDC SUPPLY 1000 OHM 5 1 WATT RESISTOR VOLT METER FLUKE MODEL 87 OR EQUIVALENT H0163 01 FIGURE 6 OPTIONAL SENSOR 2 CONFIGURATION AND WIRING WIRING TERMINALS D4S SENSOR ONLY NOT AVAILABLE IN TYPE 4 ENCLOSURE FIELD SELECTABLE D4120 DIP SWITCHES CO LOCATED SENSOR 1 TERMINALS SENSOR 2 TERMINALS 8 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 acces sory devices should be color coded to prevent wiring mistakes Improper con nections can prevent a system from responding properly in the event of a fire For signal wiring wiring between interconnected detectors or from detectors to auxiliary devices it is recommended that single conductor wire be no smaller than 18 gauge Smoke detectors and alarm system control panels have specifications for al lowable loop resistance Consult the control panel manufacturer s specifi
15. and Acc are reversed an Amber LED on sensor 2 of the duct smoke detector power board will exist indicating a trouble condition H0583 02 156 3046 004R TABLE 3 DETECTOR STATUS INDICATION is only one sensor connected LED2 will remain off NOTE There are two LED s on the Power Board each indicating the status of the two sensors connected When there RED Blink every 5 minute tamper Delay if selected LED Status Status Description Sensor Power Board Status of Relays D4S D4P120 At power up or reset at the panel the sensor take approx 35 seconds Alternating Supervisory relay Terminals 3 and 14 are closed to initialize Also occurs if the sensor soconde Green amber Alarm Relay Terminals 4 and 5 are open has been removed and restored in every 1 second Aux Relay does not switch states Terminals 6 and 16 are closed Terminals 8 and 18 are closed Sensor the base in the sensor housing Initialization Sensor is missing during the seven Alternating Supervisory relay Terminals 3 and 14 are closed Off Green amber Alarm Relay Terminals 4 and 5 are open every 1 second Aux Relay does not switch states Terminals 6 and 16 are closed Terminals 8 and 18 are closed Sensor D4S is outside it s UL Maintenance approved sensitivity limits and needs to be cleaned or replaced RED Blink every 5 Amber Blink seconds every 5 seconds Supervisory relay Terminals 3 and 14 are open Alarm Relay Terminals 4 and 5 ar
16. arms and possible dispatch of the fire department FIGURE 10 DETECTOR SENSOR EXPLODED VIEW SENSOR COVER SENSING CHAMBER COVER AND SCREEN H0584 00 NOTICE If any unitary packaged air conditioning units are run during the drywall installation phase of any building under construction to accelerate the drying of joint compound the subsequent sanding of those drywall joints and resulting dust may compromise the sensor heads in duct smoke detectors To avoid this condition it is recommended that the sensor heads be removed during the construction phase For additional information visit www systemsensor com for a detailed techni cal bulletin 13 1 DETECTOR SENSOR 1 Remove the sensor to be cleaned from the system 2 Remove the sensor cover by pulling outward on each of the four removal tabs that hold the cover in place See Figure 10 3 Vacuum the screen carefully without removing it If further cleaning is required continue with Step 4 otherwise skip to Step 7 4 Remove the chamber cover screen assembly by pulling it straight out 5 Use a vacuum cleaner or compressed air to remove dust and debris from the sensing chamber 6 Reinstall the chamber cover screen assembly by sliding the edge over the sensing chamber Turn until it is firmly in place 7 Replace the cover using the holes for the LEDs for alignment and then gently pushing it until it locks into place 8 Reinstall the detector 13 2 REINS
17. ble Condition Causes of a Trouble Condition may be e Unit loses power e Cover Tamper Feature times out e Wiring Problems between the Sensor and the Power Board e Mismatch between number of sensors connected to the Power Board and the dipswitch setting Designation Default seen rows O O O Aux relay does not switch states with a Trouble condition TRBL SHUTDN O o Aux relay switches states with a Trouble condition SENSORS Only one sensor is connected the Power Board Two sensors are connected to the Power Board Oo o d o e ae Provides a Trouble condition terminals 3 and 14 open when sensor housing cover has 7 7 been removed or has been secured improperly for more than 7 minutes Provides an instantaneous Trouble condition terminals 3 and 14 open upon cover removal SS 300 010 5 156 3046 004R 10 DETECTOR STATUS INDICATION Detector staus is indicated by the LED sensor and the correcsponding LED on the power board The power board has two separate LED s to indicate the status of each sensor connected to it Refer to Table 3 on page 8 for more details 11 INTERCONNECTION MULTIPLE FAN SHUT DOWN When using the interconnect feature an alarm from an initiating device will switch the Aux Relays on the other devices interconnected FIGURE 8 MULTIPLE FAN SHUTDOWN INTERCONNECTION OF D4120W S D4120W Q120 VAC D4120W O
18. ca tions for the total loop resistance allowed for the particular control panel being used before wiring the detector loop 8 1 WIRING INSTRUCTIONS The D4120W detector is designed for easy wiring The housing provides a terminal strip with clamping plates The D4S housing provides 4 wiring ter minals with clamping plates Wiring connections are made by sliding the bare end of the wire under the plate and tightening the clamping plate screw See Figure 7 on page 5 for system wiring 8 2 SENSOR 2 INSTALLATION WIRING The power board is capable of controlling a second housed sensor The second sensor model D4S NOT available in Type 4 enclosure can be wired to the power board per the following 1 Connect wires to the four wire terminals in the corner of the D4S sensor housing designated as Tamper Y Y R and B Route wires through the conduit openings in the sensor housing and D4120W power board housing 2 Connect the opposing ends of the wires to the terminal connections marked Sensor 2 on the Power Board See Figure 6 for reference En sure that wires are connected to the appropriate terminal locations A No 0 or 1 phillips screwdriver should be used for terminal connection The tamper terminals are not polarity sensitive 3 Adjust the middle dipswitch on the power board to indicate 2 sensors as shown in Figure 6 4 The D4S can only be used with new InnovairFlex models and is not com patible with previously sold d
19. e open Aux Relay does not switch states Terminals 6 and 16 are closed Terminals 8 and 18 are closed Unit loses Power Off Cover Tamper Delay times out Green Blink every3 Amber solid Wiring Problems between the M Sensor and the Power Board on Amber solid Mismatch between the number of B sensors connected and the Dip Trouble LED1 Green Switch setting Green blink every 5 Supervisory relay Terminals 3 and 14 are open Alarm Relay Terminals 4 and 5 are open Aux Relay does not switch states with no shutdown on Trouble selected Terminals 6 and 16 are closed Terminals 8 and 18 are closed 1 ted 2 selected seconds on first blink canes 5 Aux Relay Switches states with shutdown on Trouble selected SENSOR CONNEC ASC GCI sensor seuones Terminals 6 and 16 are open Terminals 8 and 18 are open LED2 Amber No second sensor p solid Green blink every 5 LED1 Green seconds on first blink every 5 2 sensors connected 1 selected sensor seconds LED s off on second LED2 Amber sensor solid Supervisory relay Terminals 3 and 14 are closed Alarm Unit detects smoke Solid Red Solid Red Alarm Relay Terminals 4 and 5 are closed Aux Relay switches states Terminals 6 and 16 are open Terminals 8 and 18 are open has Power and it is not in lization Trouble Maintenance or Alarm Green Blink every 5 Green Blink Standby seconds every 5 seconds Supervisory relay Terminals 3 and 14 are closed Alarm Relay Termina
20. etectors 24V AC DC 10 2aV AC DC 9 AUX OUT 19 AUX OUT 20 17 NO INT AUX 1 6c INT 12 16 NC aarm 15 f 14 NO RTEST 11 3c RRESET 2 acc irar H0557 17 BOARD LED 2 TEST RESET SENSOR POWER BUTTON LEDs BOARD LED 1 SS 300 010 4 120 VAC INPUT 24 VAC DC INPUT 156 3046 004R FIGURE 7 SYSTEM WIRING DIAGRAM FOR 4 WIRE DUCT SMOKE DETECTORS Do not loop wire under terminals when wiring detectors Break wire runs to provide system supervision of connections POWER INPUTS NOTE 1 rey ney OS O O 9 10 OR AUXILIARY CONTACTS FOR FAN SHUTDOWN ETC NOTE 2 AUX A AUX B NC CG NO NC CG NO iG 6 17 Te 1s 7 s SUPERVISORY CONTACTS NOTE 3 SUP N O SUP C UL FM LISTED 4 WIRE CONTROL PANEL ALARM s ALARM N O INITIATION CONTACTS NOTE 4 ALARM C Q FIRST DETECTOR IN THE LOOP NOTE 1 24V Power Inputs accept a non polarized 24VDC or 24VAC 50 60Hz 120VAC Power Inputs accept only 120VAC 50 60Hz Connect power source to appropriate terminals of each detector See specifications for additional power supply information NOTE 2 Auxiliary contacts shown in standby position Contacts switch dur ing alarm as indicated by arrows Auxiliary contacts are not to be used for connection to the control
21. logy for the detection of smoke This detection method when combined with an efficient housing samples air passing through the duct allowing detection of a developing hazardous condition When sufficient smoke is sensed an alarm signal is initiated and appropriate action can be taken to shut off fans blow ers 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 D4120W detectors are designed to operate on 24 VDC VAC or 120 VAC Alarm and supervisory relay contacts are available for control panel interface alarm initiation HVAC control and other auxiliary functions Auxiliary re lays are provided for fan shut down Detector interconnection provides signal ing of up to 50 other detectors in the loop for multiple fan shut down These detectors are not designed for 2 wire applications 3 1 DETECTOR FEATURE SET Utilizes 2D51 plug in head 2 sensors to 1 power board capability Cover missing signal Sampling tubes install from front or rear of detector Compatible with existing accessories 4 CONTENTS OF THE DUCT SMOKE DETECTOR KIT 1 Sensor power board assembly and cover s 2 Three 10 sheet metal screws for mounting 3 Drilling template 4 One sampling tube end cap 5 One plastic exhaust tube NOTE A sampling tube must be ordered to complete the installation It must be the correct length for the width of the duc
22. ls 4 and 5 are open Aux Relay does not switch states Terminals 6 and 16 are closed Terminals 8 and 18 are closed NOTE If any other visual indication is noted contact System Sensor technical support at 1 800 SENSOR2 Please refer to insert for the Limitations of Fire Alarm Systems THREE YEAR LIMITED WARRANTY System Sensor warrants its enclosed product to be free from 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 the enclosed product No agent representative dealer or employee of the Company has the authority to in crease or alter the obligations or limitations of this Warranty The Company s obligation of this Warranty shall be limited to the replacement of any part of the product 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 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 replace units which are found to be defective because of damage unreasonable use modifications or alterations occurring after
23. nsorl or sensor 2 and the selected sensor can be tested or both sensors can be reset simultaneously using the test reset button LED status indications include Standby green blink Trou ble amber Maintenance amber blink and Alarm red See Figure 14 for wiring diagram With the key switch selected there is also the capability of obtaining a sen sitivity measurement of the selected sensor using the SENS RDR sensitivity reader sold separately FIGURE 11 WIRING DIAGRAMS FOR OPTIONAL ACCESSORIES ALARM ALARM AUX OUT AUX OUT QO MHR MHW D4120W RA400Z OPTIONAL OPTIONAL AUDIO DUCT DETECTOR REMOTE LED ALERT ANNUNCIATOR H0554 01 FIGURE 12 WIRING DIAGRAM FOR D4120W TO APA151 OR APA451 D4120W DUCT DETECTOR APA151 451 D4120W FIELD INSTALLED 69 AUX OUT 8 JUMPER COMMON A RED LED ALARM 2 GREEN LED POWER NOTE WIRING DIAGRAM SHOWN IS FOR D4120W 4 WIRE DUCT SMOKE DETECTOR SYSTEM EQUIPPED WITHOUT A CONTROL PANEL NOTE A TROUBLE CONDITION IS INDICATED BY LOSS OF GREEN LED FIGURE 13 WIRING DIAGRAM FOR D4120W TO RTS451 RTS151 RTS451KEY RTS151KEY RTS451 RTS451KEY HO584 03 D4120W FIELD INSTALLED JUMPER RED LED ALARM a naa GREEN LED POWER FOR RTS451KEY ONLY WITHOUT A CONTROL PANEL H0582 03 FIGURE 14 WIRING DIAGRAM FOR D4120W TO SSL451 RTS2 AOS D4120 D4120W D4P120 RTS2 RTS2 AOS NOTE If polarity of Acc
24. o maintain the watertight properties of this duct smoke detector watertight conduit and fittings must be used Mount the product with the conduit holes facing downwards if possible Read the System Sensor Guide for Proper Use of Smoke Detectors in Duct Applications A05 1004 which provides information on detector spacing placement zoning wiring and special applications This manual is available online at www systemsensor com NFPA Standards 72 and 90A should also be referenced for detailed information SS 300 010 See detector label 65 mA RMS 24VAC 60Hz 135 mA RMS 24 VAC 60 Hz See detector label 20 mA RMS 120 VAC 60 Hz 35 mA RMS 120 VAC 60 Hz ACCESSORY CURRENT LOADS AT 24 VDC DEVICE STANDBY TROUBLE ALARM APA151 APA451 12 5mA 30mA Max MHR MHW 0 29mA Max RTS451 RTS151 0 12mA Max n a 5 mA n a mA n a RTS2 3mA Max RTS2 AOS 3mA 16mA Max 16mA Max 30mA Max 55mA Max NOTE Any combination of accessories may be used such that the given accessory loads are 110mA or less at the Aux output and 50mA or less at the Alarm output 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 1 LIMITATIONS OF DUCT SMOKE DETECTORS The National Fire Protection Association has established that DUCT DETEC TORS MUST NOT BE USED AS A SU
25. sampling tube FIGURE 3 AIR DUCT DETECTOR SAMPLING TUBE SAMPLING TUBE ENDCAP ARROW MUST FACE INTO AIR FLOW AIR FLOW DIRECTION H0551 00 CAUTION The sampling tube end cap included with the detector is criti cal to 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 Once any sampling tube length adjustments are made plug the end of the sampling tube with the provided end cap A plastic exhaust tube is included with the unit to be installed if needed In stall into the housing connection that is downstream from the sampling tube connection The exhaust tube can be installed from the front or back of the detector A longer 1 foot exhaust tube model ETX is available as an accessory in cases where the molded exhaust tube does not extend at least 2 inches into the duct 6 2 SAMPLING TUBE INSTALLATION 1 For tubes shorter than the width of the duct slide the sampling tube with installed end cap into the housing connection that meets the air flow first Position the tube so the arrow points into the airflow as shown in Figure 3 Per NFPA sampling tubes over 3 feet long should be sup S 300 010 ported at the end opposite the duct detector In ducts wider than 8 feet work must be performed inside the duct to couple the other section of the sampling tube to the section already installed using the 2 inch con duit fitting Make sure that
26. t where it will be installed See Table 1 on page 3 to determine the inlet tube required for different duct widths 5 DETECTOR INSTALLATION 5 1 VERIFY AIR FLOW DIRECTION AND VELOCITY Model D4120W detectors are designed to be used in air handling systems with air velocities of 100 to 4000 feet per minute Duct widths from 6 inches to 12 feet can be accommodated Be sure to check engineering specifications to ensure that the air velocity in the duct falls within these parameters If neces sary use a velocity meter anemometer to check the air velocity in the duct S 300 010 4 WIRE POWER BOARD POWER BOARD MODULE COVER H0549 06 5 2 DETERMINE MOUNTING LOCATION AND CONFIGURATION On ducts wider than 18 inches it is recommended that the detector be mounted downstream of a bend obstruction in the duct or the supply or return air inlet Exception Installation of duct detectors can be on or within a commercial packaged rooftop heating and air conditioning system fire smoke dampers and economizers They may be mounted in either the supply and or return air section as determined by local code Once a suitable location is selected determine if the detector is to be mounted in a side by side rectangular configuration or a top over bottom square configuration as shown in Figure 2 If mounting in the square configuration remove the rear attachment screw rotate the unit at the hinge and replace the screw into the new att
27. 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 exclusion or limitation of incidental or consequential 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 156 3046 004R 2012 System Sensor S 300 010
28. y 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 01 inches of water and no more than 1 11 inches of water Because most commercially available manometers cannot accurately measure very low pressure differen tials applications with less than 500 FPM of air speed may require one of the following 1 the use of a current sourcing pressure transmitter Dwyer Series 607 per Section 7 2 or 2 the use of aerosol smoke per section 12 5 3 156 3046 004R 7 2 LOW FLOW 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 5 Connect the leads of the meter to either side of the 1000 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 1000 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 detec tor housing and the LOW side of the transmitter to the exhaust tube of the duct smoke detector housing Measure and record the voltage drop across the 1000Q resistor measurement 2 Subtract the voltage recorded in measure ment 1 from the volt
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