Duct Smoke Detector Installation Instructions

3 identify a code compliant location supply or return side or both for the installation of the duct unit that will permit easy access for viewing and serviceability.

Duct smoke detector installation instructions. Do not overtighten the screws. The duct smoke detector is equipped with an auxiliary relay. This detection method when combined. If the air speed is greater than 500 fpm use a conventional manometer to measure differ ential pressure between the sampling tubes as described in 8 2 1.

With all wiring in place install the detector head. Refer to the applicable figures below depending on your duct housing model number. 4 hole 3 feet upstream from the duct smoke detector. With the air handler on measure the air velocity with an anemometer.

Smoke detectors designed for use in air duct systems are used to sense the presence of smoke in the duct. The sl 2000 series duct smoke detector provides a unique patent pending mechanism for installation and or removal of the sampling and exhaust tubes from either the front or rear of the detector housing. Consult nfpa 90a nfpa 72 and local codes to determine where smoke detectors are required. 4 when installing on the return side install duct units prior.

2 6 p n 3101210 rev 02 iss 28jan13. 6 sampling tube installation ing out of the duct select a shorter tube using 6 1 sampling tube selection. Energize the duct detector. With power source de energized and the smoke detector not installed wire all connections per engineering drawings.

Duct smoke detection may be useful in preventing injury and property dam age in instances such as the following. To verify correct installation the pressure differential between the sampling high side and exhaust low side tubes should be measured using a magnehelic pressure gauge or equivalent. Install the duct smoke detector on a flat section of hvac duct between six and ten duct widths from any bends or obstructions. Smoke introduced into an air duct system will be distributed throughout the entire building.

To ensure correct operation install the duct detector using the following guidelines. 5 4 secure the duct detector to the duct use two rectangular configuration or three square configuration of the pro vided sheet metal screws to screw the duct detector to the duct. A heating ventilating or air conditioning hvac fan motor overheats and resulting smoke is sensed by the duct smoke detector installed in the main supply duct. The ad2 series smoke duct detector should be greater than 0 01 inches of water and less than 1 2 inches of water.

Once the airflow direction has been determined insert the inlet and exhaust tubes into the duct smoke detector. Installation instructions for duct smoke detectors mounted on combination fire smoke or smoke dampers ii detector 04 12.