Pittway System Sensor Innovair DH100ACDC Installation And Maintenance Instructions Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
DH100ACDC Air Duct Smoke Detector
Before Installing
Please thoroughly read the System Sensor Guide for Proper
Use of Smoke Detectors in Duct Applications (I56-473), which
provides detailed information on detector spacing, place-
ment, zoning, wiring, and special applications. Copies of this
manual are available from System Sensor. NFPA Standards 72
and 90A should also be referenced for detailed information.
NOTICE: This manual shall 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

[1] General Description
[2] Limitations of Duct Smoke Detectors
[3] Exploded View of Duct Smoke Detector Components 2
[4] Contents of the Duct Smoke Detector Kit
[5] Installation Sequence
[6] Duct Smoke Detector Maintenance and Test Procedures 5
[7] Detector Cleaning Procedures
[8] Board Replacement
[9] Specifications
Warranty

[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 DH100ACDC Air Duct Smoke Detectors are supplied
as an ionization model or photoelectronic model. These
two smoke detection methods are combined with an effi-
cient housing design that samples air passing through a
duct and allows detection of a developing hazardous condi-
tion. 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, blow-
ers, 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.
DH100ACDC detectors are designed to operate on 24 VDC/
VAC, 120 VAC, or 240 VAC. Alarm and supervisory relay con-
tacts are available for control panel interface (alarm initia-
tion), HVAC control, and other auxiliary functions. Auxiliary
D100-68-00
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relays are also provided for fan shut down or signaling of up
to 9 other detectors in the loop for multiple fan shut down.
These detectors are not designed for 2-wire applications.
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 ac-
cessories offer a variety of annunciation capabilities.
The DH100ACDC can be reset by a momentary power in-
terruption, the reset button on the front cover, the control
panel, or remote reset accessory. The DH100ACDC incor-
porates a cover tamper feature that provides a trouble
Page
signal after 20 minutes if the cover is removed or im-
1
properly installed. Proper installation of the cover re-
1
moves the trouble condition.
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[2] Limitations Of Duct Smoke Detectors

2
The National Fire Protection Association has established
7
that DUCT DETECTORS MUST NOT BE USED AS A SUB-
8
STITUTE FOR OPEN AREA DETECTOR PROTECTION as a
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means of providing life safety. Nor are they a substitute for
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early warning in a building's regular fire detection system.
System Sensor supports this position and strongly recommends
that the user read NFPA Standards 90A, 72, and 101. The
DH100ACDC Air Duct Smoke Detectors are listed per UL 268A.
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.
This device will not sense smoke unless the ventilation sys-
tem is operating and the cover is installed.
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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A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
WARNING
WARNING
WARNING
WARNING
I56-1147-08