3003 W CASINO RD BLDG 40-92 2024-06-12

[2]FIGURE 1.EXPLODED VIEW OF DUCT SMOKE DETECTOR COMPONENTS: /EXHAUSTTUBE r 4-WIRE O POWER BOARD m POWER BOARD MODULE COVER 0 SENSOR MODULE ° COVER METAL m / SAMPLING TUBE (sold seperately) e [ SENSOR HEAD MAGNET TEST LOCATION e H0549-06 [3]GENERAL DESCRIPTION packaged rooftop heating and air-conditioning system, fire/smoke dampers Smoke introduced into an air duct system will be distributed throughout the and economizers.They may be mounted in either the supply and/or return air entire building.Smoke detectors designed for use in air duct systems are used section as determined by local code. to sense the presence of smoke in the duct. Once a suitable location is selected,determine if the detector is to be mounted Model D4120 and D4S Duct Smoke Detectors utilize 4-wire photoelectric tech- in a side-by-side "rectangular" configuration or a top-over-bottom "square" nology for the detection of smoke. This detection method, when combined configuration as shown in Figure 2.If mounting in the square configuration, with an efficient housing, samples air passing through the duct allowing de- remove the rear attachment screw,rotate the unit at the hinge,and replace the tection of a developing hazardous condition.When sufficient smoke is sensed, screw into the new attachment hole as shown in Figure 2. Do NOT remove an alarm signal is initiated and appropriate action can be taken to shut off the hinge screw during this process.Final installation approval shall be based fans, blowers, change over air handling systems, etc. These actions can fa- upon passing section 7.2.2 and/or 8.2.4 tests. cilitate the management of toxic smoke and fire gases throughout the areas FIGURE 2: served by the duct system. REMOVE SCREW AND PIVOT REPLACE SCREW The D4120 and D4P120 detectors are designed to operate on 24 VDC/VAC or DETECTOR AS SHOWN BELOW. TO SECURE DETECTOR 120 VAC.Alarm and supervisory relay contacts are available for control panel - IN PLACE. interface(alarm initiation),HVAC control,and other auxiliary functions.Aux- ® m - iliary relays are provided for fan shut down.Detector interconnection provides signaling 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 H0550-00 1. Sensor/power board assembly and cover(s) [5.3]DRILL THE MOUNTING HOLES 2. Three u10 sheet metal screws for mounting Remove the paper backing from the mounting template supplied. Affix the template to the duct at the desired mounting location.Make sure the template 3. Drilling template lies flat and smooth on the duct. 4. One sampling tube end cap [5.3.1]FOR RECTANGULAR SIDE-BY-SIDE MOUNTING CONFIGURATION: 5. One plastic exhaust tube Center punch at(4)target centers: (2) "A"for sampling tubes and(2) "B"for NOTE:A sampling tube must be ordered to complete the installation.It must the rectangular configuration mounting tabs as shown on mounting template. be the correct length for the width of the duct where it will be installed. Drill pilot holes at target "A" centers and cut two 1.375 inch diameter holes See Table 1 on page 3 to determine the inlet tube required for different duct using a 13/8 inch hole saw or punch.Drill.156 inch diameter holes using a 5/32 widths. inch drill at target"B"centers. [5]DETECTOR INSTALLATION [5.3.2]FOR SQUARE TOP-OVER-BOTTOM MOUNTING CONFIGURATION [5.1]VERIFY AIR FLOW DIRECTION AND VELOCITY OR D4S SENSOR COMPONENT MOUNTING: Model D4120 detectors are designed to be used in air handling systems with Center punch at(4)target centers: (2) "A"for sampling tubes and (2) "C"for air velocities of 100 to 4000 feet per minute.Duct widths from 6 inches to 12 the square configuration mounting tabs as shown on mounting template.Drill feet can be accommodated. Be sure to check engineering specifications to pilot holes at target"A"centers and cut two 1.375 inch diameter holes using ensure that the air velocity in the duct falls within these parameters.If neces- a 13/8 inch hole saw or punch.Drill.156 inch diameter holes using a 5/32 inch sary,use a velocity meter(anemometer)to check the air velocity in the duct. drill at target"C"centers. If desired, drill an additional .156 inch hole at the [5.2]DETERMINE MOUNTING LOCATION AND CONFIGURATION location of one of the mounting tabs on the lower housing. On ducts wider than 18 inches it is recommended that the detector be [5.4]SECURE THE DUCT DETECTOR TO THE DUCT mounted downstream of a bend, obstruction in the duct, or the supply or Use two(rectangular configuration)or three(square configuration)of the pro- return air inlet. vided sheet metal screws to screw the duct detector to the duct. Exception: Installation of duct detectors can be on or within a commercial CAUTION:Do not overtighten the screws. 2 156-2967-008R 06-10