The end cap is needed to create the proper air flow to the sensor of the duct smoke detector.
Duct smoke detector sampling tube installation.
Once any sampling tube length adjustments are made plug the end of the sampling tube with the provided end cap.
Verify this by checking specifications of installation and if necessary use an alnor model 6000p velocity meter or equivalent to check the air velocity.
Duct smoke detector a.
Do you know if it is a code requirement to support sampling tubes greater than 3 at the opposite end of the duct detector.
The sampling tube end cap included with the detector is critical to proper operation of the duct smoke detector.
The sampling tube end cap included with the detector is critical to proper operation of the duct smoke detector.
Duct preparation the duct detectors are designed for use in ducts where the air velocities are from 300 to 4000 feet per minute.
Prior to the installation of the damper and smoke detector.
For proper air sampling duct pressure should be a minimum of 0 01 inches of water.
High performance hvac on march 11 2020 at 10 27 pm.
Once any sampling tube length adjustments are made plug the end of the sampling tube with the provided end cap.
A sampling tube must be ordered to complete the installation.
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.
It must be the correct length for the width of the duct where it will be installed.
Sampling tubes install from front or rear of detector compatible with existing accessories 4 contents of the duct smoke detector kit 1.
Duct detectors smoke detection installation.
Furthermore intentions for using duct smoke detectors should not be a substitute for area smoke detectors.
Installation instructions for the duct smoke detector a.
The specified operating range of the detector make sure the sampling tube air holes are not obstructed and are facing the hvac system airflow.
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.
Verify this by checking specifications of installation and if necessary use an alnor model 6000p velocity meter or equivalent to check the air.
One sampling tube end cap 5.
See table 1 on page 3 to determine the inlet tube required for different duct widths.
Sensor power board assembly and cover s 2.
4 detector installation 4 1 verify duct air flow direction and velocity.
4 6 p n 3101210 rev 02 iss 28jan13.
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.
Standard location when factory mounted will be on the side opposite the damper actuator.
E pdd duct smoke detector installation sheet operation the duct smoke detector s primary purpose is to provide early.
The inlet sampling tube is to be located between blades to avoid blockage of the airflow past the tube.
