Duct Smoke Detector Installation Location

Duct smoke detectors should be located in the hvac area between 6 and 10 duct equivalent diameters of straight uninterrupted run.

Duct smoke detector installation location.

The detector may be placed on the ceiling. To ensure correct operation install the duct detector using the following guidelines. To check the air velocity in the duct. On levels without bedrooms install alarms in the living room or den or family room or near the stairway to the upper level or in both locations.

The international mechanical code section 606 2 2 also states that unless multiple air han dling systems share common supply or return air ducts or plenums duct detection is not required in the supply air system. 5 2 determine mounting location and configuration on ducts wider than 18 inches it is recommended that the detector be mounted downstream of a bend obstruction in the duct or the supply or return air inlet. Installation of duct detectors can. Standard location when factory mounted will be on the side opposite the damper actuator.

D4120 duct smoke detector d4s sensor component. We will show you how to wire a system sensor duct smoke detector to a carrier bryant or icp furnace and then configure it s communicating infinity evoluti. Due to smoke dilution in the ducts the duct detectors will respond more slowly than an area detector. At these locations air flow is less turbulent and the air smoke mixture should be more homogenous refer to nfpa 90a 72 and 101 for more information.

For proper air sampling duct pressure should be a minimum of 0 01 inches of water. 2 6 p n 3101210 rev 02 iss 28jan13. The inlet sampling tube is to be located between blades to avoid blockage of the airflow past the tube. Nfpa 90a is specific to air conditioning and heating systems installation.

It provides basic instruction on the installation of smoke detectors inside the ductwork. If the detector is. Install the duct smoke detector on a flat section of hvac duct between six and ten duct widths from any bends or obstructions. In the areas where smoke detectors become inaccessible designers should include smoke detection controls remote from the inaccessible area.

Do not place the detector right next to or over a fireplace or flame producing appliance. Because carbon monoxide is slightly lighter than air and also because it may be found with warm rising air detectors should be placed on a wall about 5 feet above the floor. Designers should also remain aware that duct detectors may not substitute for area smoke detection. Install smoke alarms inside each bedroom outside each sleeping area and on every level of the home including the basement.