System Sensor DH100LP Air Duct Smoke Detector & Extended Air Speed Range

INSTALLATION AND MAINTENANCE INSTRUCTIONS Air Duct Smoke Detector Extended Air Speed Range Ohio Avenue St Charles Illinois 60174 FAX 630 377 6495 Innovair DH100LP model is a photoelectric detector for an extended air speed range of 100 to 4000 per minute 0.5 m s to 20.3 m s and has an opera temperature range of 32 to 131 0 to 55 Installing thoroughly read the System Sensor Guide for Proper of Smoke Detectors in Duct Applications I56 473 provides detailed information on detector spacing zoning wiring and special applications Copies this manual are available from System Sensor NFPA 72 and 90A should also be referenced for detailed This manual shall be left with the owner user of equipment This detector must be tested and maintained following NFPA 72 requirements The detector be cleaned at least once a year of Contents General Description 1 Limitations of Duct Smoke Detectors 1 Exploded View of Duct Smoke Detector Components 2 Contents of the Duct Smoke Detector Kit 2 Installation Sequence 2 Duct Smoke Detector Maintenance Test Procedures 5 Detector Cleaning Procedures 7 Board Replacement 7 Specifications 8 General Description HVAC system supplies conditioned air to virtually every of a building Smoke introduced into this air duct sys will be distributed throughout the entire building detectors designed for use in air duct systems are to sense the presence of smoke in the duct DH100LP Air Duct Smoke Detectors utilizes photo technology for the detection of smoke This detec method when combined with an efficient housing samples air passing through the duct and allows of a developing hazardous condition When suf smoke is sensed an alarm signal is initiated at the control panel monitoring the detector and appropriate can be taken to shut off fans blowers change over handling systems etc These actions can facilitate the of toxic smoke and fire gases throughout the served by the duct system detectors are designed operate with UL listed compatible 2 wire control panels current must be limited to 130mA or less by the con panel Auxiliary relay contacts for control purposes are available for use with the DH100LP Control must initi from the control panel testing the alarm can be enabled by a magnet activat test switch or by the optional remote test station The smoke detector latches into alarm state when an alarm A green LED flashes to indicate power a red LED local alarm indication and optional accessories a variety of annunciation capabilities DH100LP can be reset by a momentary power interrup the reset button on the front cover the control panel remote reset accessory Limitations Of Duct Smoke Detectors National Fire Protection Association has established DUCT DETECTORS MUST NOT BE USED AS A SUB FOR OPEN AREA DETECTOR PROTECTION as a of providing life safety Nor are they a substitute for warning in a building regular fire detection system Sensor supports this position and strongly recom that the user read NFPA Standards 90A 72 and 101 DH100LP Air Duct Smoke Detectors are listed per UL device will not operate without electrical power situations may cause an interruption of power The safeguards should be discussed with your local fire specialist device will not sense smoke unless the ventilation sys is operating and the cover is installed Figure 1 Exploded View Of Duct Detector Components HOLES TUBE STRIP BOARD MOUNTING TUBE SAMPLING TUBE SCREW BOARD this detector to function properly it MUST be installed to the instructions in this manual Furthermore detector MUST be protected from the elements and within ALL electrical and environmental specifi listed in this manual Failure to comply with these may prevent the detector from activating smoke is present in the air duct Contents Of The Duct Smoke Detector Kit Complete housing base and cover assembly Two 10 machine screws for mounting Two sampling tube filters One test magnet Drilling template Two foam gaskets Four 6 self tapping mounting screws for the metal tube and optional exhaust tube extension Two jack nuts One inlet tube end plug Metal sampling tube end plug One plastic sampling tube One 8 self tapping screw for the plastic sampling tube For ducts over 11 feet longer inlet sampling tubes be ordered to complete the installation They be the correct length for the width of the duct they will be installed See Table 1 on page 3 determine the inlet tube required for different widths Installation Sequence Verify Duct Air Flow Direction And Velocity DH100LP detectors are designed to be used in air systems having air velocities of 100 to 4000 feet minute Be sure to check engineering specifications to that the air velocity in the duct falls within these If necessary use a velocity meter anemome to check the air velocity in the duct Drill The Mounting Holes the paper backing from the mounting template Affix the template to the duct at the desired location Make sure the template lies flat and on the duct Center punch holes A and B Drill the as indicated on the template Insert the two jack nut Drive a 10 machine screw into the jacknut to the retainer and then back the screw out to use for mounting Sampling Tube Installation for Ducts Less 11 Feet Wide see Figure 2 Remove the front cover Slide the plastic sampling tube into the housing bushing Align the holes in the bushing with the holes in the tube Make sure there are six exposed holes on plastic sampling tube Secure with the 8 self tap screw into the bottom hole of the permanent tube For ducts greater than 11 feet in width refer to 5.4.1 and 5.4.2 2 Sampling tubes connected to duct smoke Secure The Detector Housing To The Duct the foam gaskets over the tube bushings as shown in 3 Use the two machine screws to screw the detec housing to the duct Do not overtighten the screws 3 Installation of foam gaskets over sampling bushings HOLES FOR HOUSING DUCT WORK Sampling Tube Installation of Ducts Greater 11 Feet Wide sampling tube is identified by a series of air inlet holes the tube One plastic tube is included for ducts up to 18 width All other lengths must be purchased separately the correct length as specified in Table 1 for width the duct where it will be installed It is recommended the sampling tube length extend at least 2 across the width for optimal performance The exhaust tube is onto the base of the duct housing and the Exhaust Tube Extension is available as an acces in those cases where the molded exhaust port does not at least 2 inches into the duct inlet tube is always installed with the air inlet holes into the air flow To assist proper installation the mounting flange is marked with arrows Make sure inlet tube is mounted so that the arrows point into the flow see Figure 4 Figure 5 shows the various combi of tube mounting configurations with respect to air Mounting the detector housing in a vertical orienta is acceptable provided that the air flows directly into sampling tube holes as indicated in Figure 4 1 Inlet tubes recommended for different duct Duct Width Tube Recommended to 2 ft to 4 ft to 8 ft to 12 ft extend a minimum of 2 the duct width Installation For Ducts Greater Than 1 1 Feet Less Than 8 Feet Wide If the tube is longer than the width of