System Sensor 2112TL Manual de usuario

D200-66-00 1 I56-997-02

2112TL Photoelectronic

Smoke Detector

INSTALLATION AND MAINTENANCE INSTRUCTIONS

A Division of Pittway

3825 Ohio Avenue, St. Charles, Illinois 60174

1-800-SENSOR2, FAX: 630-377-6495

Before Installing

Please thoroughly read 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 should 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

The Model 2112TL is a 4-wire photoelectronic smoke detec-

tor that uses a state-of-the-art optical sensing chamber.

This detector is designed to provide open area protection. It

features restorable, built-in, fixed-temperature (135°F)

thermal sensors.

Specifications

Diameter: 5.5 inches (140 mm)

Height (including mounting bracket): 1.7 inches (43 mm)

Weight: 5.3 oz. (150 g)

Operating Temperature Range: 32°to 100°F (0°to 37.7°C)

Operating Humidity Range: 10% to 93% relative humidity, noncondensing

Latching Alarm: Reset by momentary power interruption

Heat Sensor: 135°F fixed temperature electronic thermistor

Electrical Ratings

System Voltage Nominal: 12 VDC

Minimum: 9.5 VDC

Maximum: 14 VDC

Maximum Ripple Voltage: 30% of nom. voltage (peak to peak)

Alarm Current (at 12 V): 13 mA maximum

Reset Voltage: 0.8 VDC minimum

Reset Time: 0.3 seconds maximum

Start-up Time: 30 seconds maximum (after 30 second reset)

Installation of this detector is simplified by the use of the

mounting bracket and plug-in screw terminal block that

can be prewired to the system, allowing the detector to be

easily installed or removed for cleaning.

The 2112TL features transistors that provide alarm, power

supervisory, and sensitivity status signals for complete

smoke detector performance.

NOTE: The alarm and supervisory outputs are not to be

used as relay contacts.

In addition, an LED on the detector provides a local visual

indication of the detector’s status. If power is applied to the

detector, and it is functioning normally in standby, the sta-

tus LED blinks every ten seconds. The LED latches on in

alarm and quits flashing when the detector deviates from

its sensitivity range.

D200-66-00 2 I56-997-02

Mounting

The 2112TL 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 31/2-inch or 4-inch octagonal box, or

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

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 2), 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.

TAMPER SLOT

(DEPRESS TAB TO

REMOVE DETECTOR)

TAMPER RESISTANT TAB

(CUT OFF SMALL TAB TO

ACTIVATE TAMPER-RESIST

FEATURE)

ALIGNMENT

ARROWS

,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,

Figure 1. Surface mounting of 2112TL smoke detec-

tor on 31/2-inch and 4-inch octagonal box:

A78-2563-00

Figure 2. Smoke detector mounting bracket:

A78-2333-04

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

pair may be used to provide additional protection against

electrical interference.

Smoke detectors and alarm system control panels have

specifications for allowable loop resistance. Consult the

control panel specifications for the total loop resistance al-

lowed for the control panel being used before wiring the

detector loops.

Wire connections are made by stripping about 1/4inch of

insulation from the end of the feed wire, inserting the wire

into the appropriate terminal, and tightening the screw to

secure the wire in place.

Installation

WARNING

Remove power from the control unit or initiating device cir-

cuits before installing detectors.

1. Wire the plug-in screw terminal block per Figure 3 and

plug the terminal block into the detector.

2. Align the arrows on the detector with the arrows on the

mounting bracket.

3. Turn the detector clockwise in the mounting bracket un-

til it clicks into place.

4. After all detectors have been installed, apply power to

the control unit or initiating device circuits.

5. Test the detector as described in TESTING.

6. Reset the detector at the system control panel.

7. Notify the proper authorities the system is in operation.

D200-66-00 3 I56-997-02

CAUTION

Dust covers are an effective way to limit the entry of dust

into smoke detector sensing chambers. However, they may

not completely prevent airborne dust particles from enter-

ing the detector. Therefore, System Sensor recommends the

removal of detectors before beginning construction or other

dust producing activity. Be sure to remove dust covers from

any sensors that were left in place during construction as

part of returning the system to service.

Testing

NOTE: Before testing, notify the proper authorities that

the smoke detector system is undergoing mainte-

nance and will be temporarily out of service. Dis-

able the zone or system undergoing maintenance

to prevent unwanted alarms.

Detectors must be tested after installation and following

periodic maintenance. Test the 2112TL as follows:

A. Test Switch

1. A recessed test switch is located on the detector hous-

ing (See Figure 4).

2. Press and hold the recessed test switch with a 0.18

inch maximum diameter tool such as an allen wrench

Figure 3. Wiring diagram for the 2112TL detector:

OPTIONAL CLASS A WIRING

EOL RESISTOR

SPECIFIED BY

PANEL

MANUFACTURER

POWER

DETECTORS

UL LISTED

CONTROL

PANEL

INITIATING

LOOP

–

Z+

Z-

––

OUT

Z+

Z-

OUT

(See Note 1)

Power

Supervision

}

Note1: This terminal is not electrically connected to the detector's circuit.

It is used for wiring consistency only. Power to the detector is applied across

the "+" and "Z- IN" terminals.

LED

RECESSED TEST

SWITCH

Figure 4. Top and side views showing position of test switch:

PUSH RECESSED

SWITCH WITH A

0.18″MAX. DIAMETER TOOL

,,,,,,,,,,,,,,,,,,,,,,,,,

A78-2564-00C

A78-2336-04

or small screwdriver.

3. The detector’s LED should light within 5 seconds.

B. Smoke Entry Test

Hold a smoldering punk stick or cotton wick at the side

of the detector and gently blow smoke through the de-

tector until the unit alarms.

C. Direct Heat Method (Hair dryer of 1000-1500 watts).

Direct the heat toward either of the side thermistors.

Hold the heat source about 12 inches from the detector

in order to avoid damage to the plastic. The detector will

reset only after it has had sufficient time to cool and the

power source has been momentarily interrupted.

Both smoke and heat detection testing are recommended

for verifying system protection capability.

A detector that fails to activate with any of the above tests

should first be cleaned as outlined in MAINTENANCE. If

the detector still fails to activate, return it for repair.

Notify the proper authorities the system is in operation.

Maintenance

It is recommended that the detector be removed from its

mounting base to facilitate cleaning.

A78-2564-02A

D200-61-00 4 I56-997-02

Three-Year Limited Warranty

System Sensor warrants its enclosed smoke detector to be free from de-

fects in materials and workmanship under normal use and service for a

period of three years from date of manufacture. System Sensor makes no

other express warranty for this smoke detector. No agent, representative,

dealer, or employee of the Company has the authority to increase or alter

the obligations or limitations of this Warranty. The Company’s obligation

of this Warranty shall be limited to the repair or replacement of any part of

the smoke detector which is found to be defective in materials or work-

manship under normal use and service during the three year period com-

mencing with the date of manufacture. After phoning System Sensor’s toll

free number 800-SENSOR2 (736-7672) for a Return Authorization number,

send defective units postage prepaid to: System Sensor, Repair Depart-

ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please

include a note describing the malfunction and suspected cause of failure.

The Company shall not be obligated to repair or replace units which are

found to be defective because of damage, unreasonable use, modifica-

tions, or alterations occurring after the date of manufacture. In no case

shall the Company be liable for any consequential or incidental damages

for breach of this or any other Warranty, expressed or implied whatsoever,

even if the loss or damage is caused by the Company’s negligence or fault.

Some states do not allow the exclusion or limitation of incidental or conse-

quential damages, so the above limitation or exclusion may not apply to

you. This Warranty gives you specific legal rights, and you may also have

other rights which vary from state to state.

This smoke detector is designed to activate and initiate emergency ac-

tion, but will do so only when it is used in conjunction with an authorized

fire alarm system. This detector must be installed in accordance with

NFPA standard 72.

Smoke detectors will not work without power. AC or DC powered

smoke detectors will not work if the power supply is cut off.

Smoke detectors will not sense fires which start where smoke does not

reach the detectors. Smoldering fires typically do not generate a lot of

heat which is needed to drive the smoke up to the ceiling where the

smoke detector is usually located. For this reason, there may be large de-

lays in detecting a smoldering fire with either an ionization type detector

or a photoelectric type detector. Either one of them may alarm only after

flaming has initiated which will generate the heat needed to drive the

smoke to the ceiling.

Smoke from fires in chimneys, in walls, on roofs or on the other side of a

closed door(s) may not reach the smoke detector and alarm it. A detector

cannot detect a fire developing on another level of a building quickly or at

all. For these reasons, detectors shall be located on every level and in

every bedroom within a building.

Smoke detectors have sensing limitations, too. Ionization detectors and

photoelectric detectors are required to pass fire tests of the flaming and

smoldering type. This is to ensure that both can detect a wide range of

types of fires. Ionization detectors offer a broad range of fire sensing capa-

bility but they are somewhat better at detecting fast flaming fires than

slow smoldering fires. Photoelectric detectors sense smoldering fires better

than flaming fires which have little, if any, visible smoke. Because fires de-

velop in different ways and are often unpredictable in their growth, nei-

ther type of detector is always best, and a given detector may not always

provide early warning of a specific type of fire.

In general, detectors cannot be expected to provide warnings for fires re-

sulting from inadequate fire protection practices, violent explosions, es-

caping gases which ignite, improper storage of flammable liquids like

cleaning solvents which ignite, other similar safety hazards, arson, smok-

ing in bed, children playing with matches or lighters, etc. Smoke detectors

used in high air velocity conditions may have a delay in alarm due to dilu-

tion of smoke densities created by frequent and rapid air exchanges. Addi-

tionally, high air velocity environments may create increased dust

contamination, demanding more frequent maintenance.

Smoke detectors cannot last forever. Smoke detectors contain electronic

parts. Even though smoke detectors are made to last over 10 years, any

part can fail at any time. Therefore, smoke detectors shall be replaced after

being in service for 10 years. The smoke detector system that this detector

is used in must be tested regularly per NFPA 72. This smoke detector

should be cleaned regularly per NFPA 72 or at least once a year.

WARNING

The Limitations of Property Protection Smoke Detectors

REMOVABLE

HOUSING

REMOVABLE

SCREEN

SENSING

CHAMBER

COVER

BASE

SENSING

CHAMBER

,,,,,,,,,,,,,,,,

yyyyyyyyyyyyyyyy

,,,,,,,,,,,,,,,,

yyyyyyyyyyyyyyyy

Figure 5. Removal of cover and screen for cleaning:

The detector is cleaned as follows:

NOTE: Before removing the detector, notify the proper au-

thorities that the smoke detector system is under-

going maintenance and will be temporarily out of

service. Disable the zone or system undergoing

maintenance to prevent unwanted alarms.

1. Remove the detector cover by prying away the four side

tabs with a small-bladed screwdriver, and then pulling

the cover from the base.

2. Vacuum the screen carefully without removing it. If fur-

ther cleaning is required continue with Step 3, otherwise

skip to Step 8.

3. Remove the screen assembly by pulling it straight out

(see Figure 5).

4. Remove the sensing chamber cover by pulling it straight out.

5. Clean the vaned chamber piece by vacuuming or blow-

ing out dust and particles.

6. Replace the sensing chamber cover, aligning the arrow

on the top with arrow on the printed circuit board.

7. To replace the screen, place it over the chamber as-

sembly, turning it until it snaps into place.

8. Replace the cover using the test module socket and

LEDs to align the cover and then gently pushing it un-

til it locks into place.

9. Reinstall the detector.

10. Test the detector as described in TESTING.

11. Reconnect disabled circuits.

12. Notify the proper authorities the system is back on line.

A78-2565-02

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