INSTALLATION AND MAINTENANCE INSTRUCTIONS
DH100 Air Duct Smoke Detector
Before Installing
Please thoroughly read the System Sensor Guide for Proper Use of Smoke Detectors in Duct Applications
NOTICE: This manual should be left with the owner/user of this equipment.
IMPORTANT: This detector must be tested and maintained regularly following NFPA 72 requirements. The detector should be cleaned at least once a year.
Table of Contents | Page | ||
[1] | General Description |
| 1 |
[2] | Limitations of Duct Smoke Detectors |
| 1 |
[3] | Exploded View of Duct Smoke Detector Components | 2 | |
[4] | Contents of the Duct Smoke Detector Kit |
| 2 |
[5] | Installation Sequence |
| 2 |
[6] | Duct Smoke Detector Maintenance and Test Procedures | 5 | |
[7] | Detector Cleaning Procedures |
| 7 |
[8] | Board Replacement |
| 7 |
[9] | Specifications |
| 8 |
Warranty |
| 8 | |
[1] General Description
An HVAC system supplies conditioned air to virtually every area of a building. Smoke introduced into this air duct sys- tem will be distributed to the entire building. Smoke detec- tors designed for use in air duct systems are used to sense the presence of smoke in the duct.
Model DH100 Air Duct Smoke Detectors are supplied as a photoelectronic model. This smoke detection method is combined with an efficient housing design that samples air passing through a duct and allows detection of a develop- ing hazardous condition. When sufficient smoke is sensed, an alarm signal is initiated at the fire control panel monitor- ing the detector, and appropriate action can be taken to shut off fans, blowers, change over air handling systems, etc. These actions can facilitate the management of toxic smoke and fire gases throughout the areas served by the duct system.
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
DH100 detectors are designed to operate with 12 or 24 VDC UL listed compatible
For testing, the alarm can be enabled by a magnet acti- vated test switch or by the optional remote test station. The duct smoke detector latches into alarm state when an alarm occurs. A green LED flashes to indicate power, a red LED signals local alarm indication, and optional accessories offer a variety of annunciation capabilities.
The DH100 can be reset by a momentary power interrup- tion, the reset button on the front cover, the control panel, or remote reset accessory.
[2]Limitations Of Duct Smoke Detectors
WARNING
The National Fire Protection Association has established that DUCT DETECTORS MUST NOT BE USED AS A SUB- STITUTE FOR OPEN AREA DETECTOR PROTECTION as a means of providing life safety. Nor are they a substitute for early warning in a building’s regular fire detection system.
System Sensor supports this position and strongly recom- mends that the user read NFPA Standards 90A, 72, and 101. The DH100 Air Duct Smoke Detectors are listed per UL 268A.
WARNING
This device will not operate without electrical power.
Fire situations may cause an interruption of power. The system safeguards should be discussed with your local fire protection specialist.
![[1] General Description](/images/new-backgrounds/53933/539331xi5.webp){kind=small}
![[2]Limitations Of Duct Smoke Detectors](/images/new-backgrounds/53933/539331xi6.webp){kind=small}
WARNING
This device will not sense smoke unless the ventilation sys- tem is operating and the cover is installed.
WARNING
For this detector to function properly, it MUST be installed according to the instructions in this manual. Furthermore, the detector MUST be protected from the elements and op- erated within ALL electrical and environmental specifica- tions listed in this manual. Failure to comply with these requirements may prevent the detector from activating when smoke is present in the air duct.
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