Duct Smoke Detector Installation Manual

Push the flared end over the sample tube you want to lengthen.

Duct smoke detector installation manual.

Furthermore the detector must be operated within all electrical and environmental specifications listed in this manual and the sensor head installation manual. If the difference is greater than 0 15 volts there is enough air flow through the duct smoke detector for proper operation. Ing the performance application and installation of duct smoke detectors. 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.

Measure and record the voltage drop across the 1000ω resistor measurement 2. Instructions in this manual. 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. Nfpa standards 72 and 90a should also be referenced for detailed information.

4 when installing on the return side install duct units prior. With power source de energized and the smoke detector not installed wire all connections per engineering drawings. Duct smoke housings 4 wire 9 mounting en bosch security systems inc. With all wiring in place install the detector head.

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

Remove the roll pin and set screw from one of the sample tubes. Subtract the voltage recorded in measure ment 1 from the voltage recorded in measurement 2. Failure to comply with these requirements may prevent the detector from activating when smoke is present in the air duct. The ad2 series smoke duct detector should be greater than 0 01 inches of water and less than 1 2 inches of water.

Refer to the applicable figures below depending on your duct housing model number. Installation manual 2017 04 8 0 f 01u 071 689 1. The duct smoke detector is designed for use in duct. 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.