400 Series
™
4-Wire Duct
Smoke Detector
A Division of Pittway
3825 Ohio Avenue, St. Charles, IL 60174
1-800-SENSOR2 (736-7672), Fax 630-377-6495
http://www.systemsensor.com
Models Available
DH400ACDCI Ionization Duct Smoke Detector
DH400ACDCA Ionization Detector, ULC Listed
DH400ACDCP Photoelectronic Duct Smoke Detector
Features
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24 VAC/DC or 120/220 VAC operation
Simple change-out of photo or ion detector heads
Air velocity rating from 500 to 4000 FPM
Powered outputs for remote LED and sounder
Remote test station option
Remote sounder option
Equipped with a DPDT auxiliary relay (two Form C
contacts)
Easy and quick mounting to round or rectangular ducts
from 1′ – 12′ wide
Clear cover for convenient visual inspection
UL 268A listed
3-year warranty
detector heads allow easy removal for quick cleaning and
maintenance, or a change in application without removing
the duct housing. The DH400ACDC samples air currents
passing through a duct and gives dependable performance
for management of fans, blowers, and air conditioning
systems.
WARNING:
Duct smoke detectors have specific limitations.
DUCT DETECTORS ARE:
NOT
a substitute for an open area smoke detector,
NOT
a substitute for early warning detection, and
NOT
a replacement for a building’s regular fire
detection system.
Refer to NFPA 72 and 90A for additional duct detector
application information.
System Sensor DH400ACDC
4-wire duct housing will
accommodate either the 1451DH ionization sensor or the
2451 photoelectronic sensor. The twist-in, twist-out
Length:
Width:
Depth:
Weight:
Operating
Temperature Range:
14.5 inches (37 cm.)
5 inches (12.7 cm.)
4 inches (10.2 cm.)
4.5 lbs. (2.0 kg.)
32° to 120°F (0° to 49° C)
APPROVED
Operating
Humidity Range:
Air Duct Velocity:
10% to 93% relative humidity
500 to 4000 ft./min.
© System Sensor 8/96
This document is not intended to be used for installation purposes.
A05-201-02