Duct Smoke Detector Installed

Refer to the applicable figures below depending on your duct housing model number.

Duct smoke detector installed. Therefore they should complement the buildings fire detection system and not serve as the primary fire detection system. One unit can accommodate multiple installation footprints to overcome mounting constraints. Install return side detectors at a point before the return air stream is diluted by outside air. Nor should it serve as an early warning detection system.

Install supply side detectors at a point downstream from the supply fan and after the air filter. The air handling system which is installed in these sensors block the recirculation of smoke in such areas. Duct detectors smoke detection installation furthermore intentions for using duct smoke detectors should not be a substitute for area smoke detectors. One sampling tube end cap 5.

Duct smoke sensors are made to detect early smoke or combustion particles present in the air travelling through hvac passways. Both nfpa 90 and imc 606 2 1 state similar things that can be summarized and paraphrased as if the duct system is designed for more than 2000 cfm the system must have a duct smoke detector installed and if the duct system is designed for more than 15 000 cfm one in the return and supply is required. It must be the correct length for the width of the duct where it will be installed. Sensor power board assembly and cover s 2.

With power source de energized and the smoke detector not installed wire all connections per engineering drawings. Energize the duct detector. Hvac duct smoke detection. With all wiring in place install the detector head.

4 contents of the duct smoke detector kit 1. Install the duct smoke detector on a flat section of hvac duct between six and ten duct widths from any bends or obstructions. Innovairflex duct smoke detectors combine an impressive collection of innovations to greatly simplify hvac system monitoring. One plastic exhaust tube note.

Tool free plug in sampling tubes speed and simplify installation. A sampling tube must be ordered to complete the installation. The international mechanical code imc specifies that if the space is air conditioned and the a c unit is over 2 000 cfm a duct smoke detector is required to be installed in the return air duct.