D4120 DUCT SMOKE DETECTOR PDF!
The InnovairFlex™ Series, D, 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and. The DSDF-D is designed for use with Ruskin UL Classified. Smoke and Combination Fire Smoke Dampers. The device detects the presence of smoke in. Protech D 4-Wire Photoelectric Duct Smoke Detector - -
|Published:||20 June 2016|
|PDF File Size:||16.71 Mb|
|ePub File Size:||46.57 Mb|
Make sure that the holes on both sections of the air inlet sampling tube are lined up and facing into the airflow. For tubes longer than d4120 duct smoke detector width of the duct, the tube should extend out of the opposite side of the duct.
Ensure that the sampling tube is angled downward from the duct smoke detector to allow for moisture drainage away from the detector.
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 extending out of the duct, select a shorter tube using Table 1. Otherwise, trim the tube to leave approximately 1 to 2 inches extending outside d4120 duct smoke detector duct.
D4120 - System Sensor 4-wire Photoelectric Low-flow Duct Smoke Detector
Plug the end with the end cap and tape closed any holes in the protruding section of tube. Be sure to seal the duct where the tube protrudes. Do not d4120 duct smoke detector the screws. Order the correct length, as specified in Table 1, for width of the duct where it will be installed.
Sampling tubes recommended for different duct widths: DST1 1 to 2 ft. DST3 4 to 8 ft. DST5 8 to 12 ft. These sampling tubes can only be used with new InnovairFlex duct smoke d4120 duct smoke detector. The sampling tube is always installed with the air inlet holes facing into the air flow.
D System Sensor Duct Smoke Detectors
Make sure the sampling tube is mounted so that the arrow points into the airflow as shown in Figure 3. Mounting the detector housing d4120 duct smoke detector 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 d4120 duct smoke detector from the sampling tube. In such cases, it is permissible to modify a sampling tube that is longer than necessary to span the duct width.
Space the additional holes as evenly as possible over the length of the tube.
4-WIRE PHOTOELECT DUCT SMK DET
Air duct detector sampling tube: This procedure should only be used as a temporary fix and is not intended as a substitute for ordering the correct length tubes. 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.
Do so by measuring the pressure difference between the inlet and outlet d4120 duct smoke detector on the detector housing using a manometer as described in Section 7. The sampling tube end cap, included with the detector, is critical to proper operation of the duct smoke detector. The end cap is needed to create the proper air flow to the sensor d4120 duct smoke detector the duct smoke detector.
Once any sampling tube length adjustments are made, plug the end of the sampling tube with the provided end cap. To verify sufficient sampling of d4120 duct smoke detector 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. Because most commercially available manometers cannot accurately measure very low pressure differentials, applications with less than FPM of air speed may require one of the following: A plastic exhaust tube is included with the unit to be installed if needed.
Install into the housing connection d4120 duct smoke detector is downstream from the sampling tube connection.