Before Installing, General Description

Figure 2. Surface mounting of 2100AT smoke detec- tor on 31/2-inch and 4-inch octagonal box:

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Before Installing

Please thoroughly read the System Sensor manual I56-407, Guide for Proper Use of System Smoke Detectors, which pro- vides detailed information on detector spacing, placement, zoning, wiring, and special applications. Copies of this manual are available at no charge from System Sensor.

NOTICE: This manual shall be left with the owner/user of this equipment.

IMPORTANT: This detector must be tested and maintained following NFPA 72 requirements. The detector should be cleaned at least once a year.

General Description

Model 2100AT is a 2-wire photoelectronic smoke detectors that uses a state-of-the-art optical sensing chamber. This detector also provides restorable, 135˚F fixed-temperature heat detection. The 2100AT heat-detection unit is integrated with the photoelectronic sensor. This detector is designed to provide open area protection and to be used with com- patible UL-listed panels only.

In addition, a piezoelectric horn in each detector produces an interrupted, 85 dBA tone when the individual detector alarms or when the supply voltage polarity is reversed.

Installation of this detector is simplified by the use of a mounting bracket and a plug-in screw terminal block that can be prewired to the system, allowing the detector to be easily installed or removed for cleaning. The detector’s sensitivity can be tested in place using the MOD400R Test Module.

An LED on the detector provides a local visual indication of

Figure 3. 2100AT smoke detector mounting bracket:

TAMPER SLOT (DEPRESS TAB TO REMOVE DETECTOR)

ALIGNMENT

ARROWS

the detector’s status. If power is applied to the detector and it is functioning normally in standby within the listed sensi- tivity range, the status LED blinks every ten seconds. The LED also latches on in alarm. If the LED stops blinking, the unit should be removed for maintenance and inspection.

The detectors also include an output that allows optional connection of the RA400Z Remote Annunciator.

Mounting

Each 2100AT detector is supplied with a mounting bracket that permits the detector to be mounted:

1.To a single gang box, or

2.Directly to a 3-1/2 inch or 4 inch octagonal box, or

3.To a 4 inch square electrical box by using a plaster ring.

4.Directly to the ceiling using drywall anchors, if permit- ted by local codes and/or the authority having jurisdic- tion.

Tamper-resistant Feature

This detector includes a tamper-resistant feature that pre- vents its removal from the bracket without the use of a tool. To make the detector tamper-resistant, remove the smaller tab by breaking it at the scribed line on the tamper resistant tab on the detector mounting bracket (see Figure 3), then install the detector. To remove the detector from the bracket once it has been made tamper resistant, use a small screw- driver to depress the tamper-resistant tab, located in the slot on the mounting bracket, and turn the detector coun- terclockwise.

Wiring Installation Guidelines

All wiring must be installed in compliance with the Na- tional Electrical Code, applicable local codes, and any spe- cial requirements of the local authority having jurisdiction. Proper wire gauges should be used. The conductors used to connect smoke detectors to control panels and accessory devices should be color-coded to reduce the likelihood of wiring errors. Improper connections can prevent a system from responding properly in the event of a fire.

The screw terminal block accepts 14 – 22 gauge wire. For best system performance, all wiring should be installed in separate grounded conduit. Do not mix fire system wiring in the same conduit as any other electrical wiring. Twisted used before wiring the detector loops.

TAMPER RESISTANT TAB (CUT OFF SMALL TAB TO ACTIVATE TAMPER-RESIST FEATURE)

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