System Sensor 1412A Bedienungsanleitung

D400-08-00 REV#-002 1 I56-1007-000

1412A and 1424A Direct Wire

Ionization Smoke Detectors

INSTALLATION AND MAINTENANCE INSTRUCTIONS

Before Installing

Please thoroughly read the System Sensor manual I56-

407-XX, Guide for Proper Use of System Smoke Detec-

tors, which provides detailed information on detector

spacing, placement, zoning, wiring, and special appli-

cations. Copies of this manual are available at no charge

from System Sensor. Please also refer to CAN/ULC-S524,

Standard for the Installation of Fire Alarm Systems and

CEC Part 1, Sec. 32..

General Description

System Sensor 1412A and 1424A dual-chamber ionization

smoke detectors utilize state-of-the-art, unipolar sensing

chambers. These detectors are designed to provide open

area protection, and to be used with ULC-listed 4-wire

control panels. The 1412A for 12 volt panels operates

at 12VDC, and the 1424A for 24 volt panels operates at

24VDC. The detectors’ operation and sensitivity can be

tested in place. These detectors are latching type system

detectors. When latched in alarm, the detectors must be

reset by a momentary power interruption.

An LED on the detector provides a local indication of the

Speciﬁcations

Diameter: 5.5 inches (14 cm)

Height: 3.12 inches (8.0 cm)

Weight: 0.7 lb (310 gm)

Operating Temperature: 0° to +49°C (32° to 120°F)

Operating Humidity: 10% to 93% Relative Humidity Non-condensing

Locking Alarm: Reset by momentary power interruption.

Relay Contact Ratings

Resistive or Inductive (60% power factor) load

Form A: 2.0A @ 30VAC/DC

Form C: 2.0A @ 30VAC/DC

Electrical Ratings: 1412A 1424A

System Voltage: 12 24 DC (4V Maximum Ripple)

Supply Voltages: 11.3 20 VDC Minimum

17.3 29 VDC Maximum

Reset Voltages: .73 .8 VDC Minimum

Standby Current: 100 100 µA Maximum

Alarm Currents: 35.2 21.3 mA Minimum

77.0 40.6 mA Maximum

The alarm and auxiliary relay operate within the specied voltage ratings.

Reset Time: 0.3 0.3 Seconds

Start-up Time: 30 30 Seconds

detector’s status. If power is applied to the detector, and

the detector is functioning properly in standby, the status

LED will blink every 10 seconds. In alarm, the LED will be

latched on continuously until the detector is reset.

Each detector contains one Form A (SPST-NO) contact

for connection to the alarm-initiating circuit, and one Form

C (SPDT-NO/NC) set of auxiliary contacts. Supervision of

detector power is accomplished by installing a Power Su-

pervisory End-of-Line Relay Module (A77-716) at the end

of the detector power loop. When power is applied to and

through the detectors, the EOL Power Supervisory Module

is energized. Its relay contacts close and provide a closed

series circuit in the control panel’s alarm-initiating loop. A

power failure or a break in the detector power loop de-

energizes the EOL Module. The relay contacts open and

trigger a trouble signal at the control panel.

6581 Kitimat Rd., Unit #6, Mississauga, Ontario, L5N 3T5

1-800-SENSOR2, FAX: 905-812-0771

WWW.SYSTEMSENSOR.CA

D400-08-00 REV#-002 2 I56-1007-000

Mounting

Each 1412A and 1424A detector is supplied with a mount-

ing bracket kit that permits the detector to be mounted:

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

deep electrical box, or

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

with the supplied mounting bracket kit.

Spacing

Spacing of 30 ft. on a smooth ceiling as per CAN/ULC-

S536. Where conditions or response requirements vary,

other spacing may apply.

Wiring Installation Guidelines

All wiring must be installed in compliance with the Na-

tional Electrical Code and the applicable local codes, and

any special requirements of the local authority having

jurisdiction. Proper wire gauges should be used. The con-

ductors used to connect smoke detectors to control panels

and accessory devices should be color-coded to prevent

wiring mistakes. Improper connections can prevent a sys-

tem from responding properly in the event of a re.

NOTE: Refer to releasing device manufacturer’s instal-

lation instruction for proper connections.

NOTE: Contacts are shown in stand-by mode and will

transfer in alarm condition.

CAUTION

For system supervision: for terminals 1, 2, 7, and 8, do not

use looped wire under terminals. Break wire run to provide

system supervision of connections.

For signal wiring (the wiring between interconnected de-

tectors), it is recommended that the wire be no smaller

than 18 gauge. Wire sizes up to 12 gauge wire may be

used. For best system performance, the power (+) and (–)

loop wires should be twisted pair and installed in separate

grounded conduit to protect the loop from extraneous elec-

trical interference.

Smoke detectors and alarm system control panels have

specications for allowable loop resistance. Consult the

control panel manufacturer’s specications for the total

loop resistance allowed for the particular model control

panel being used before wiring the detector loops.

Wire connections are made by stripping about 3/8"of insu-

lation from the end of the wire (use strip gauge molded in

base), sliding the bare end of the wire under the clamping

TAMPER

RESISTANT

TAB

TO MAKE DETECTOR TAMPER RESISTANT,

BREAK OFF TAB EXTENSION

AT SCRIBED LINE

Figure 1. Flush mounting of detector on 4 inch oc-

tagonal box:

Figure 2. Detector mounting bracket:

A78-1554-02 A78-534-00

COMMON

N/O

N/C

AUXILIARY

CONTACTS

FORM C

456

POWER

ALARM

CONTACTS

FORM A

N/O

COMMON

N/O

N/C

(OPTIONAL)

RELEASING

DEVICE

456

COMMON

N/O

N/C

(OPTIONAL)

RELEASING

DEVICE

456

EOL

POWER

SUPERVISION

RELAY

MODULE

A77-716B

SUGGESTED

EOL

RESISTOR

CLASS A OPTIONAL WIRING

INITIATING

LOOP

POWER

DETECTORS

ULC LISTED

COMPATIBLE

CONTROL

PANEL

A78-1811-00

A78-1554-01

Figure 3. Wiring diagram for models 1412A and 1424A detectors used with Class A

or Class B four-wire control panels.

D400-08-00 REV#-002 3 I56-1007-000

plate, and tightening the clamping plate screw. A typical

wiring diagram for a 4-wire detector system is shown in

Figure 3.

Tamper-proof Feature

This detector includes a tamper-proof feature that, when

activated, prevents removal of the detector without the use

of a tool. To activate this feature, break off the smaller tab

at the scribed line on the tamper-proof tab, located on the

detector mounting bracket (see Figure 2), then install the

detector. To remove the detector from the bracket once the

tamper-proof feature has been activated, depress the tam-

per-proof tab located in the slot on the mounting bracket

(see Figure 4) and turn the detector counterclockwise for

removal.

Installation

WARNING

Remove power from initiating-device circuits before in-

stalling detectors.

1. Wire detector per installation guidelines.

2. Line up arrows on the detector with arrows on the

mounting bracket.

3. Turn the detector clockwise until it clicks into place.

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

the control unit.

5. Test the detector as described under TESTING.

6. Reset the detector at the system control panel.

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

CAUTION

Dust covers can be used to help limit dust entry to the

detector, but they are not a substitute for removing the

detector during building construction. Remove any dust

covers before placing system in service.

Testing

NOTE: Before testing, notify the proper authorities that

the smoke detector system is undergoing main-

tenance, and therefore will temporarily be out of

service. Disable the zone or system undergoing

maintenance to prevent unwanted alarms.

Before testing the detector, look for the presence of the

ashing LED. If it does not ash, power has been lost to

the detector (check the wiring), or it is defective (return for

repair, see warranty information).

Detectors must be tested after installation and following

periodic maintenance. The 1412A and 1424A may be

tested as follows:

A. Recessed Test Switch

1. A test switch is located on the detector housing (see

Figure 4).

2. Push and hold the recessed test switch with a 0.1

inch maximum diameter tool.

3. The LED on the detector should light within 30

seconds.

4. Reset the detector at the system control panel.

B. Test Module (System Sensor Model No. MOD400R)

The MOD400 or MOD400R is used with an analog or

digital voltmeter to check the detector sensitivity as de-

scribed in the test module’s manual.

C. Aerosol Generator (Gemini 501)

Set the generator to represent 4%/ft. to 5%/ft. obscu-

ration as described in the Gemini 501 manual. Using the

bowl shaped applicator, apply aerosol until unit alarms.

Notify the proper authorities the system is back on line.

Detectors that fail these tests should be cleaned as de-

scribed under MAINTENANCE and retested. If the detec-

tors still fail these tests, they should be returned for repair.

PUSH RECESSED TEST SWITCH WITH

A 0.1" MAX. DIAMETER TOOL.

TEST MODULE

SOCKET

LED

RECESSED

TEST SWITCH TAMPER SLOT

Figure 4. Bottom and side view showing position of test switch:

A78-1554-03

D400-08-00 REV#-002 4 I56-1007-000

Figure 5. Removal of cover and screen for cleaning:

LOCK PRONG

REMOVABLE

SCREEN

REMOVABLE

COVER FOR

CLEANING

LOCKING

PRONGS

Maintenance

NOTE: Before starting, notify the proper authorities that

the smoke detector system is undergoing main-

tenance, and therefore will temporarily be out of

service. Disable the zone or system undergoing

maintenance to prevent unwanted alarms.

The 1412A and 1424A are cleaned as follows:

1. Remove the detector screen and cover assembly by

depressing the three lock prongs on the top of the cover,

rotate the cover counterclockwise, and pull the screen

and cover assembly away from the detector (see Figure

5). Usage of System Sensor CRT400 cover removal

tool is recommended.

2. Remove the screen from the cover.

3. Use a vacuum cleaner to remove dust from the screen,

the cover, and the sensing chamber.

4. After cleaning, snap the screen into the cover, then

place the cover and screen assembly on the detector,

turning clockwise until it is locked in place.

5. Test detector as described under TESTING.

6. Notify the proper authorities that the system is back on

line.

78-1554-04

Three-Year Limited Warranty

System Sensor warrants its enclosed smoke detector to be free from defects in ma-

terials 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 commencing

with the date of manufacture. After phoning System Sensor’s toll free number 1-800-

SENSOR2 (736-7672) for a Return Authorization number, send defective units post-

age prepaid to: System Sensor, Repair Department, RA #__________, 6581 Kitimat

Rd., Unit #6, Mississauga, Ontario, L5N 3T5. 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, unrea-

sonable use, modications, 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 consequential damages, so the

above limitation or exclusion may not apply to you. This Warranty gives you specic

legal rights, and you may also have other rights under common law.

Please refer to insert for the Limitations of Fire Alarm Systems

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