INSTALLATION AND MAINTENANCE INSTRUCTIONS
DH500 Intelligent Air Duct Smoke Detector Housing
3825 Ohio Avenue, St. Charles, Illinois 60174
Specifications |
|
|
Length: | 14.5 inches | (36.7 cm) |
Width: | 5 inches | (12.7 cm) |
Depth: | 3.5 inches | (8.9 cm) |
Weight: | 2.8 lbs. | (1.1 kg) |
Operating Temperature Range: | 32° to 120°F (0° to 49°C) | |
Operating Humidity Range: | 10% to 93% Relative Humidity | |
Duct Air Velocity: | 500 – 4000 ft./min. (91.4 – 1219.2 m/min.) | |
Electrical Ratings for DH500 |
|
|
Voltage Range: | 14.5 – 32 VDC Peak | |
Standby Current (nominal): | 150uA at 24 VDC | |
|
| |
Rated Voltage: |
| |
LED current (nominal): | 6mA at 24 VDC | |
|
|
|
Before Installing
Please thoroughly read System Sensor’s 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.
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.
The DH500 Air Duct Detector Housings are used with System Sensor’s intelligent model 1551 ionization detector head and model 2551 photoelectronic detector head. These two principal smoke detection methods are combined with an efficient housing design that samples air passing through a duct and allows early detection of a developing hazardous condition. When sufficient smoke is sensed, an alarm signal is initiated at the fire control panel monitoring the detector, and appropriate action can be taken to shut off fans and
blowers, change over air handling systems, etc. This can prevent the distribution or isolation of toxic smoke and fire gases throughout the areas served by the duct system.
Two LEDs on each detector latch ON to provide a local alarm indication. There is also a remote alarm output for use with auxiliary devices. The DH500 has remote test capability with the RTS451/RTS451KEY Remote Test Station.
Contents of the Duct Detector Housing Kit
The DH500 consists of the following items: (See Figure 1.)
See Note 1 on Page 2 for inlet sampling tube and detector supply information.
1.Complete housing base and cover assembly.
2.Two #10 sheet metal mounting screws.
3.Two sampling tube filters.
4.One test magnet.
5.Drilling template.
6.Two
7.Two rubber tube bushings seals.
8.Four #6
9.One filter adapter.
10.One inlet tube end plug.
11.Four #6x7/10 cover mounting screws.
12.Two #10 speed nuts.
13.One test coil and parts bag.
1 |
