Metasys 2551J User manual

Fire Initiating Devices and Notification Appliances Technical Manual 408
Intelligent Products Section
Technical Bulletin
Issue Date 1095
© 1995 Johnson Controls, Inc. 1
Code No. LIT-408075
Introduction Page 3
● General Description 4
Installation Procedures 7
● General Description 7
● Spacing 7
● Wiring Installation Guidelines 7
● Installation 8
● Tamper-Proof Feature 9
Testing and Maintenance Procedures 11
● Testing 11
● Maintenance 14
● Limitations 16
2551J and 2551TJ Plug-In Intelligent
Photoelectronic Smoke Detector

2 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector

Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector 3
Introduction
This document contains important information about installing and
operating Johnson Controls 2551J and 2551TJ plug-in intelligent
photoelectronic smoke detectors. If you install 2551J and 2551TJ
plug-in intelligent photoelectronic detectors for someone else to use,
leave a copy of this document with the user.
These instructions provide information regarding wiring, installing,
testing, and maintenance. Follow only those instructions that apply to the
model you are installing.
Before you install the 2551J and 2551TJ plug-in intelligent
photoelectronic detectors, read and be familiar with:
●the control panel system installation manual
●the requirements of the authority having jurisdiction
●National Fire Protection Association (NFPA)-72-National Fire
Alarm Code
●System Sensor Guide for Proper Use of System Smoke Detectors
Technical Bulletin in the Fire Initiating Devices and Notification
Appliances Technical Manual (FAN 408), which provides detailed
information on detector spacing, placement, zoning, wiring, and
special applications
●or, for non-United States installations, applicable codes and standards
specific to country and locality of installation
Failure to follow these directions may result in failure of the device to
report an alarm or trouble condition or respond properly to an alarm
condition. Johnson Controls is not responsible for devices that have been
improperly installed, tested, or maintained by others.
As is the case with all installations under NFPA, Underwriters
Laboratories, Inc. (UL), Underwriters Laboratories of Canada (ULC), or
Canadian Electrical Code classification, final written approval of
permissible operation and configuration rests with the authority having
jurisdiction.

4 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector
The model 2551J/2551TJ photoelectronic, intelligent analog detectors
utilize a state-of-the-art, optical sensing chamber. These detectors are
designed to provide open area protection and to be used with compatible
control panels only. Connect detectors only to compatible control units.
The detectors transmit an analog value representation of the smoke density
over the communication Signaling Line Circuit (SLC) to a fire alarm
control panel. When the heat detection element of the 2551J senses a
temperature above its alarm point, it increases the transmitted analog value
to a level that will cause an alarm in the system.
!
CAUTION: Equipment hazard. Do not use in potentially
explosive atmospheres. Do not leave unused wires
exposed.
Rotary decade switches are provided on the back of the detector for setting
the detector’s SLC address.
The detector has two Light Emitting Diodes (LEDs) that provide visual
indication of the detector’s status. In normal mode, the LEDs blink every
time the detector is polled by the control panel when the blink feature is
enabled in the system programming of the control panel. When the
detector is in alarm, the LEDs are latched into a constant On condition.
When the system and the detector is reset after an alarm, the LEDs will
return to the normal blink mode if programmed.
Note that only five detectors on any one SLC can latch on the detector
LEDs in the alarm condition. However, if the detectors are designed to
limit the current drawn from the SLC, the system can be programmed to
latch on more LEDs when additional detectors are in alarm. This mode is
needed if a relay or sounder detector mounting base is used when
controlling an auxiliary function such as equipment control or local
signaling, or if a duct smoke detector relay controls a HVAC fan.
Remote LED annunciation capability is available as an optional accessory
(RA400Z).
In order to assure proper operation this product should be applied as
specified in the applicable NFPA codes and in compliance with its
UL listing.
!
CAUTION: Personal injury hazard. This device will not
operate without electrical power. Frequently, fire
situations may cause an interruption of power. The
system safeguards should be discussed with your
local fire protections specialist.
General
Description

Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector 5
Johnson Controls smoke detectors are marked with a compatibility
identifier located as the last digit of the five digit code stamped on the base
of the product. Connect detectors only to compatible control units as
indicated in Johnson Controls compatibility chart, which contains a list of
UL Listed control units and detectors. See the Device Compatibility
Technical Bulletin located in the Fire Management Accessories Manual
(FAN 445).
Table 1: Specifications
Specifications
For the 2551J and 2551TJ Detectors
Diameter 6.1 in. (154.94 mm) installed in B501B
4.1 in. (104.14 mm) installed in B501
Height 2.3 in. (58.42 mm)
Add 0.5 in. (12.7 mm) for thermal models
Weight 0.61 lb (277 g)
Installation Temperature Range
2551J 32 to 120°F (0 to 49°C)
2551TJ 32 to 100°F (0 to 38°C)
For the 2551J and 2551TJ Detectors
Installation Humidity Range 10 to 93% Relative Humidity
Maximum Air Velocity 3000 ft/min. (15 m/S)
Voltage Range 14.5 to 28 volts DC Peak
Standby Current 150
µ
A @ 24 VDC
LED Current 7 mA @ 24 VDC
Alarm Temperature Range (2551TJ) 135° Fixed
Accessories Part Number
Flangeless Adapter Base B501J
Flanged Adapter Base B210LPJ
Sounder Base (includes B501J) B501BHJ
Recessed Mounting Kit (includes B501J) RMK400
Retrofit Replacement Flange for
B501BJ Base F110
Remote LED Annunciator RA400Z
Detector Sensitivity Test Tool MOD400R
Surface Mounting Kit SMK400
Test Magnet M02-04-01
Detector Removal Tool XR-5

6 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector

Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector 7
Installation Procedures
This section contains installation information for Johnson Controls 2551J
and 2551TJ plug-in intelligent photoelectronic smoke detectors.
Instructions are given for wiring the detector, and basic installation
information is provided.
The National Fire Protection Association (NFPA)-72-National Fire
Alarm Code defines the spacing requirements for smoke detectors.
Typically, this is 30 foot centers for mounting (maximum of 21 foot radius
of each detector) when the detectors are installed on a smooth ceiling no
higher than 10 feet. Room configuration and operating environment may
require a reduction in the standard maximum 900 square foot coverage for
each detector.
All wiring must conform to applicable local codes, ordinances, and
regulations. Verify that all detector bases are installed and the wiring
polarity is correct at each base. Proper wire gauges should be used. The
installation wires should be color-coded to limit wiring mistakes and ease
system troubleshooting. Improper connections will prevent a system from
responding properly in the event of a fire.
Refer to the selected plug-in detector mounting base document located in
the Fire Initiating Devices and Notification Appliances Technical Manual
(FAN 408) for installation and wiring instructions.
General
Description
Spacing
Wiring
Installation
Guidelines

8 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector
!
WARNING: Shock hazard. Remove power from the loop
before installing detectors.
To install detectors:
1. Wire the detector base (supplied separately) per the wiring diagram
provided in the detector base technical bulletin.
2. Set the detector to a desired SLC address on the detector rotary
switches (Figure 1), and then write the address on the label on the
base. Set the detector address by:
●rotating the right dial so that the arrow points to the address
unit digit
●rotating the left dial so that the arrow points to the address
decade digit
3. Install the detector into the detector base.
4. Turn the detector clockwise until it drops into place.
5. Continue turning the detector clockwise to lock it in place.
6. Enable the tamper-proof feature. For instructions see the
Tamper-Proof Feature section of this technical bulletin.
7. After all detectors have been installed, apply power to the SLC or
control unit.
8. Remove the detector dust cover if the operating environment is free of
excessive dust as is typically encountered during construction.
9. Test the detector by following the procedure in the Testing section of
this technical bulletin.
testmag3
Figure 1: Rotary Decade Address Switches
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.
If detectors are mounted in a construction area, with or without the dust
cover in place, each detector should be thoroughly cleaned, inspected, and
tested after construction is complete. Remove any dust covers before
placing system in service.
Installation
Limiting Dust
Exposure

Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector 9
This detector includes a tamper-proof feature that prevents removal of the
detector without the use of a tool.
To make the detector tamper-proof:
1. Break off the smaller tab at the scribed line on the tamper proof tab on
the detector mounting bracket.
2. Install the detector.
tm prprf
Plastic Lever
Break tab at
dotted line b
y
twistin
g
toward
center of base.
Figure 2: Activating the Tamper-Proof Feature
To remove the detector from the bracket once it has been made
tamper-proof:
1. Use a pocket screwdriver, or similar tool, and depress the
tamper-proof tab located in the slot on the mounting bracket.
2. Turn the detector counterclockwise until it separates from the base.
See the applicable detector base data for the location of the tamper-proof
break-off tab and the location of the tool insertion point.
remdetct
Use sm all-bladed
screwdriver to
push plastic lever
in direction of arrow.
Figure 3: Removing the Detector Head from the Base
The tamper-proof feature may be defeated by breaking and removing
the plastic lever from the base. However, this prevents using the
feature again.
Tamper-Proof
Feature

10 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector

Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector 11
Testing and Maintenance
Procedures
All detectors must be tested after installation and periodically thereafter.
Testing methods must satisfy the authority having jurisdiction.
Detectors offer maximum performance when they are tested and
maintained in compliance with National Fire Protection Association
(NFPA)-72-National Fire Alarm Code.
Before testing, notify the proper authorities that the smoke detection
system will be temporarily out of service while undergoing testing and
maintenance. Disable the zone or system undergoing maintenance to
prevent unwanted alarms.
After a detector is set into alarm by one of the following test methods and
the alarm activating device is removed from the detector, the system
should be reset at the control panel before testing any additional detectors.
Before you check each detector:
●Check and make sure the LEDs blink.
If they do not blink, and LEDs on other detectors and/or modules on the
same SLC blink:
●Check the connection between the SLC and the detector.
●Check the data base to make sure the detector is programmed
correctly.
●If the LEDs on the detector still do not blink, return the detector to
Johnson Controls for servicing.
●If the LEDs on the other detectors and/or modules do not blink, check
the SLC connections at the control panel.
The sensitivity and function of each detector must be tested after the initial
installation and periodically thereafter. Refer to the NFPA-72-National
Fire Alarm Code for the required frequency. Check with your local
authority for the requirements in your area.
Testing
Individual
Detector Tests

12 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector
Functional Test Magnet (M02-04-01)
This detector can be functionally tested with a test magnet. The test
magnet causes the electronic simulation of smoke in the sensing chamber,
and tests the detector’s electronics and connections to the control panel.
1. Place the magnet against the cover opposite the test module socket to
activate the test feature (Figure 4).
2. The LEDs should latch on within 30 seconds indicating alarm and
annunciating the panel.
testswc3
Test Module
Socket
LED
Push recessed test switch
with a 0.1 in. max. diameter tool.
Test Ma
g
net
Painted
Surface
LED
Figure 4: Views Showing Position of the Test Magnet
(model 2551TJ shown)
Sensitivity Test Module (MOD400R)
The MOD400R is used with your Digital Multimeter (DMM) or voltmeter
to check the detector sensitivity as described in the MOD400R’s manual.
If the detector’s sensitivity limits or the MOD400R limits do not appear on
the back of the detector, the MOD400R is not suitable for field sensitivity
testing of that unit.
Smoke Entry Aerosol Generator (Gemini 501) per NFPA 72-National
Fire Alarm Code
The field test tool is the Gemini model 510 aerosol generator.
1. Set the generator to represent 4 to 5%/ft obscuration as described in
the Gemini 501 manual.
2. Using the bowl-shaped applicator, apply aerosol until unit alarms.
This test only verifies proper operation of the detector, and is not used
to test sensitivity.
Testing the 2551J
and 2551TJ

Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector 13
Direct Heat Method (Hair Dryer of 1000-1500 watts)
1. Direct the heat toward the thermal collector.
2. Hold the heat source about 12 inches from the detector in order to
avoid damage to the plastic.
3. The detector will reset only after the collector has had sufficient time
to cool and the power source has been momentarily interrupted.
Detectors that fail these tests should be cleaned as described in the
Maintenance section of this technical bulletin and retested. If the detectors
still fail these tests they should be returned for repair.
You can test all of the intelligent detectors programmed in the system by
issuing a command at the control panel.
This test checks:
●if the detectors are communicating with the control panel
●if the detectors are in the proper sensitivity range
●for any detectors that are in alarm
●for any detectors that are reporting a trouble condition
The test can be performed while the system is in normal operation.
The test will not sound any alarms.
Note: Check with the local authority having jurisdiction to determine
whether you must perform the individual tests on each detector or
whether the following test is acceptable in your area.
Refer to the control panel technical manual for detailed information on
testing the intelligent detectors from the control panel.
Control Panel
Test

14 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector
Before cleaning, notify the proper authorities that the smoke detector
system is undergoing maintenance and will temporarily be out of service.
Disable the SLC or system undergoing maintenance to prevent
unwanted alarms.
It is recommended that the detector be removed from its mounting base to
facilitate easier cleaning (Figure 5).
1. Remove the detector cover by placing a small-bladed screwdriver in
the side slot of the detector cover.
2. Twist it slightly until the cover can be turned counterclockwise
for removal.
3. Vacuum the screen carefully without removing it. If further cleaning
is required, continue with Step 3 or skip to Step 6.
4. Remove the screen by pulling it straight out.
5. Vacuum the inside.
6. Clean the vaned chamber piece by vacuuming or blowing out dust and
particles.
7. To replace the screen, orient it so that the arrow on top aligns with the
field test slot on the base of the detector.
8. Carefully push the screen onto the base making sure it fits tightly to
the chamber.
9. Replace the cover by gently rotating it clockwise until it locks
in place.
Maintenance
Cleaning the
2551J/2551TJ
Detector

Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector 15
cov&scr4
Removable Cover
Removable Screen
P/N RS24
(
w/o Thermal
)
..
RS24T
(
w/ Thermal
)
TestSlot
Figure 5: Cleaning the 2551J/2551TJ Detector

16 Intelligent Products—2551J and 2551TJ Plug-In Intelligent Photoelectronic Smoke Detector
This smoke detector is designed to activate and initiate emergency action,
but will do so only when used in conjunction with other equipment.
This detector is designed for installation in accordance with NFPA
Standards 71 and 72, or equivalent codes and standards specific to
country of installation.
●Smoke detectors will not work without power. Alternating Current
(AC) or Direct Current (DC) powered smoke detectors will not work
if the power supply is cut off for any reason.
●Smoke detectors will not sense fires which start where smoke does
not reach the detectors. Smoke from fires in chimneys, in walls, on
roofs, or on the other side of closed doors may not reach the smoke
detector and alarm it.
●A detector may not detect a fire developing on another level of a
building. For this reason, detectors should be located on every level
of a building.
●Smoke detectors have sensing limitations. Ionization detectors offer a
broad range fire-sensing capabilities, but they are better at detecting
fast, flaming fires than slow, smoldering fires. Photoelectric detectors
sense smoldering fires better than flaming fires. Because fires
develop in different ways, and are often unpredictable in their growth,
neither type of detector is always best, and a given detector may not
always provide warning of a fire. In general, detectors cannot be
expected to provide warnings for fires resulting from inadequate fire
protection practices, violent explosions, escaping gas, improper
storage of flammable liquids like cleaning solvents, other safety
hazards, or arson.
This detector is UL Listed to operate in a maximum air velocity
of 3000 ft/min. Air velocity, along with other factors, may affect
detector sensitivity. See the 1993 NFPA-72-National Fire
Alarm Code, Appendix B for information.
●Test your smoke detector system per NFPA 72-National Fire
Alarm Code, or equivalent codes and standards specific to country of
installation, at least semiannually. Clean and take care of your smoke
detectors regularly. Taking care of the fire detection system you have
installed will measurably reduce your product liability risks.
Limitations
Controls Group FAN 408
507 E. Michigan Street Fire Initiating Devices and Notification Appliances Technical Manual
P.O. Box 423 Printed in U.S.A.
Milwaukee, WI 53201