System Sensor DH400ACDCP Manual

DH400ACDCP Air Duct Smoke Detector 3825 Ohio Avenue St Charles Illinois 60174 FAX 630 377 6495 AND MAINTENANCE INSTRUCTIONS Installing thoroughly read the System Sensor Guide for Proper of Smoke Detectors in Duct Applications A05 1004 provides detailed information on detector spacing zoning wiring and special applications Copies this manual are available online at www systemsensor or via System Sensor toll free fax back service Docu on Demand at 800 736 7672 NFPA Standards 72 and should also be referenced for detailed information This manual should be left with the owner user this 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 Exploded View of Duct Detector Components Contents of the Duct Detector Kit Limitations of Duct Detectors Installation Sequence Duct Detector Maintenance and Test Procedures Detector Cleaning Procedures Specifications Test log of Tables and Figures 1 Duct Detector Exploded View 2 3 Mounting Location of Speed Nuts 1 Inlet Sampling Tube Selection 4 5 Sampling Tube Mounting Configurations 6 Sampling Tube Filter Installation 7 Wiring Diagram 8 Wiring Diagram No Control Panel 9 Wiring Diagram Accessories 10 Testing Detector Alarm 11 Detector Head Removal 12 RTS451 RTS451KEY Test Coil Installation 13 Photo Head Exploded View of Sampling Tube Gaskets Sampling Tube General Description HVAC system supplies conditioned air to virtually ev area of a building Smoke introduced into this air duct will be distributed to the entire building Smoke designed for use in air duct systems are used to the presence of smoke in the duct DH400ACDCP Air Duct Smoke Detector utilizes pho technology for the detection of smoke This smoke method when combined with an efficient hous design 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 and blowers change air handling systems etc These actions can facilitate management of toxic smoke and fire gases throughout areas served by the duct system detectors are designed to operate from 24 24 VAC 120 VAC or 240 VAC Alarm and supervisory contacts are available for control panel interface alarm HVAC control and other auxiliary functions detectors are not designed for 2 wire application testing the alarm can be enabled by a magnet activated switch by insertion of a calibrated test card into the chamber photoelectronic version only or by the remote test station The duct smoke detectors latch alarm state when alarm occurs LEDs on each detector to provide local alarm indication and optional offer a variety of annunciation capabilities detector can be reset by a momentary power inter by the magnet activated reset switch or by the remote test station Figure 1 Exploded view of ductdetector components SAMPLING TUBE SEPARATELY HOLES DETECTOR STRIP BOARD DETECTOR TUBE BASE SCREWS ADAPTER HEAD MAGNET TUBE Contents Of The Duct Detector Kit Complete housing base and cover assembly Two 10 sheet metal mounting screws Two sampling tube filters One test magnet Drilling template Two 5 16 O rings Two rubber tube bushing seals Four 6 self tapping mounting screws for the sampling optional exhaust tube extension One filter adapter One inlet tube end plug Two 10 speed nuts The inlet sampling tube must be ordered separately must be the correct length for the width of the duct where will be installed See Table 1 on page 4 to determine the tube required for different duct widths 4 Limitations Of Duct 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 DH400ACDCP Air Duct Smoke Detectors are listed per 268A device will not operate without electrical power fire situations may cause an interruption of The system safeguards should be discussed with local fire protection specialist device does not sense smoke unless the ventilation is operating this detector to function properly it MUST be installed to the instructions in this manual Furthermore detector MUST be protected from the elements and op within ALL electrical and environmental specifica listed in this manual Failure to comply with these may prevent the detector from activating smoke is present in the air duct Installation Sequence Verify duct air flow direction and velocity Drill the mounting holes Secure the detector housing to the duct Install the sampling tube Complete the field wiring Install the filters and check pressure differential Perform detector check Install the cover Verify Duct Air Flow Direction And Velocity DH400ACDCP detectors are designed to be used in handling systems having air velocities of 500 to 4000 per minute Be sure to check engineering specifications ensure that the air velocity in the duct falls within these If necessary use a velocity meter to check the 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 Slide the two speed over the two small holes hole A next to the sampling bushing holes hole B previously drilled in the duct Figure 3 Secure The Detector Housing To The Duct the duct housing cover Slide the foam gaskets over tube bushings as shown in Figure 2 Make sure the small holes in the gaskets line up with the two base holes Put one 5 16 O ring over each of the two sheet metal screws Use the two sheet metal screws to the detector housing to the duct CAUTION Do not the screws 2 Installation of foam gaskets over sampling bushings SAMPLING BUSHING DETECTOR TUBE BUSHING GASKETS Install The Inlet inlet tube shown in Figure 4 is identified by a series air inlet holes on the tube This tube must be purchased Order the correct length as specified in Table for width of the duct where it will be installed The ex tube is molded into the base of the duct housing and A2440 00 Exhaust Tube Extension is available as an ac in those cases where the molded exhaust port does extend at least 2 into the duct inlet tube is always installed in the centermost hous bushing with air inlet holes facing into the air flow assist proper installation the tube mounting flange is with arrows Make sure the inlet tube is mounted that the arrows point into the air flow Figure 5 shows various combinations of tube mounting configurations respect to air flow the detector housing in a vertical orientation is provided that the air flows directly into the tube holes as indicated in Figure 4 1 Inlet tubes required for different duct widths Installation For Ducts Less Than 8 Feet Wide If the tube is longer than the width of the air duct a 3 4 hole in the duct directly opposite the hole cut for the inlet tube If the tube is shorter the width of the air duct install the end plug into inlet tube as shown in Figure 4 Sampling tubes 3 ft long must be suppo