Duct Smoke Detector Installation Manual

Nfpa standards 72 and 90a should also be referenced for detailed information.

Duct smoke detector installation manual.

The duct smoke detector is designed for use in duct. Remove the end plug from the other sample tube. Read system sensor s applications guide for duct smoke detectors hvag53 which provides information on detector spacing placement zoning wiring and special applications. 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.

The ad2 series smoke duct detector should be greater than 0 01 inches of water and less than 1 2 inches of water. 8 before installing read system sensor s applications guide for duct smoke detectors hvag53 which provides information on detector spacing placement zoning wiring and special applications. Remove the roll pin and set screw from one of the sample tubes. Standard 268a standard for smoke detectors for duct applications nfpa standard 90a installation of air conditioning and ventilating systems nfpa 92a standard for smoke control systems utilizing barriers and pressure differences.

4 when installing on the return side install duct units prior. Failure to comply with these requirements may prevent the detector from activating when smoke is present in the air duct. 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. The duct smoke detector units are designed to operate in duct widths from 6 to 10 wide with an air velocity between 500 to 4 000 feet per minute.

Furthermore the detector must be operated within all electrical and environmental specifications listed in this manual and the sensor head installation manual. Subtract the voltage recorded in measure ment 1 from the voltage recorded in measurement 2. Instructions in this manual. Push the flared end over the sample tube you want to lengthen.

Measure and record the voltage drop across the 1000ω resistor measurement 2. Nfpa standards 72 and 90a should also be refer enced for detailed information. E pdd duct smoke detector installation sheet operation the duct smoke detector s primary purpose is to provide early warning of an impending fire and shut down the hvac unit in order to prevent smoke from circulating throughout the building. With power source de energized and the smoke detector not installed wire all connections per engineering drawings.

Ing the performance application and installation of duct smoke detectors. Refer to the applicable figures below depending on your duct housing model number. Installation manual 2017 04 8 0 f 01u 071 689 1. If the difference is greater than 0 15 volts there is enough air flow through the duct smoke detector for proper operation.