Cerberus inteLINK DI-4A Quick Start Manual

DI-4A
Ionization Smoke Detector
ENGINEER AND ARCHITECT SPECIFICATIONS
Flush or Surface Mounting
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Compact
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Adjustable Sensitivity
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Screw-type Terminals
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Versatile
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New "Free Flow" POC Path
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Rugged
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Alarm Light
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Simple Twist/Lock Assembly
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Solid State Circuitry
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Superior Air Velocity Characteristics
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Listed, ULC Listed, FM, CSFM, NYMEA and
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City of Chicago Approved
Introduction
The Cerberus Pyrotronics Model DI-4A smoke detector
with adjustable sensitivity operates on the ionization
principle. It is designed to respond to the first traces of fire
in the form of visible smoke or invisible products of
combustion. Heat or flame is not required to activate the
detector. The Model DI-4A detector has been developed
for protection of a wide range of commercial, industrial,
institutional, and residential occupancies.
Technical Description
The DI-4A detector is a plug-in, dual chamber ionization
detector with adjustable sensitivity and contains two
ionization chambers together with a highly sensitive
semiconductor amplifier-switching circuit. One chamber
detects the presence of combustion products. The
second chamber serves as a reference, to stabilize the
detector's sensitivity for changes in environmental tem-
perature, humidity, and pressure. The detector assembly
locks in upon alarm; therefore it must be reset at the
control panel.
The DI-4A can be manually adjusted to two different
sensitivity settings; Low and High. This is easily done by
moving the sensitivity indicator, located on the underside
of the detector housing, with a small pointed instrument
such as a ball point pen.
The detector operates from a 20 VDC source, provided by
the Cerberus Pyrotronics control panel. The detector
requires a very small standby current (less than 110µA),
which permits the use of a 2-wire detector circuit of #18
AWG wire, reducing system installation costs. In alarm,
the detector will draw approximately 175mA (with remote).
The DI-4A detector is Underwriters Laboratories Inc. listed
for ordinary indoor applications.
Base assemblies for either flush or surface mounting, all
with screw type terminals, are available for use with the DI-
4A detector as follows:
DB-4TS
DB-4TF
A remote indicator lamp, Model RL-30 or RL-40 may be
connected when the detector is concealed from view or a
remote relay, Model RR-2, may be connected to the DI-4A
where a detector-controlled function is required at or near
the detector. The Model RR-2 relay has one set of double-
pole, double throw contacts rated at 120 VAC, 2 Amp.
resistive.
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Surface Base with Integral Alarm Lamp and
Terminal Connection for Remote Relay or
Remote Alarm Lamp
Flush Base with Integral Alarm Lamp and
Terminal Connection for Remote Alarm
Lamp
CATALOG NUMBER
6113