Duct Smoke Detector Sampling Tube Installation

See table 1 on page 3 to determine the inlet tube required for different duct widths.

Duct smoke detector sampling tube installation.

For proper air sampling duct pressure should be a minimum of 0 01 inches of water. Standard location when factory mounted will be on the side opposite the damper actuator. The inlet sampling tube is to be located between blades to avoid blockage of the airflow past the tube. The end cap is needed to cre ate the proper air flow to the sensor of the duct smoke detector.

High performance hvac on march 11 2020 at 10 27 pm. Duct preparation the duct detectors are designed for use in ducts where the air velocities are from 300 to 4000 feet per minute. The specified operating range of the detector make sure the sampling tube air holes are not obstructed and are facing the hvac system airflow. Duct detectors smoke detection installation.

Once any sampling tube length adjustments are made plug the end of the sampling tube with the provided end cap. It must be the correct length for the width of the duct where it will be installed. Do you know if it is a code requirement to support sampling tubes greater than 3 at the opposite end of the duct detector. Prior to the installation of the damper and smoke detector.

Installation instructions for the duct smoke detector a. The sampling tube end cap included with the detector is critical to proper operation of the duct smoke detector. One sampling tube end cap 5. St 10 for duct widths of 6 to 1 0 st 25 for duct widths of 1 0 to 3 0 st 50 for duct widths of 3 0 to 5 0 requires support.

A sampling tube must be ordered to complete the installation. 4 detector installation 4 1 verify duct air flow direction and velocity. Sampling tube assembly see figure 2 the duct detectors are designed for use in ducts where the air velocities are from 300 to 4000 feet per minute. Verify this by checking specifications of installation and if necessary use an alnor model 6000p velocity meter or equivalent to check the air velocity.

Sensor power board assembly and cover s 2. E pdd duct smoke detector installation sheet operation the duct smoke detector s primary purpose is to provide early. The end cap is needed to create the proper air flow to the sensor of the duct smoke detector. The sampling tube end cap included with the detector is critical to proper operation of the duct smoke detector.

Verify this by checking specifications of installation and if necessary use an alnor model 6000p velocity meter or equivalent to check the air. Sampling tubes install from front or rear of detector compatible with existing accessories 4 contents of the duct smoke detector kit 1. Once any sampling tube length adjustments are made plug the end of the sampling tube with the provided end cap. Sampling tube installation the ad2 series duct smoke detectors use a specially notched sampling tube which may be ordered separately in one of four standard lengths.

Duct smoke detector a. Furthermore intentions for using duct smoke detectors should not be a substitute for area smoke detectors.