System Sensor 2451TH, 2451 User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
2451 and 2451TH Photoelectronic
3825 Ohio Avenue, St. Charles, Illinois 60174
Plug-in Smoke Detectors
Specifications
Size Height: 2.4 inches (61 cm) Add 0.5 inches (13 cm) for thermal model 2451TH Diameter: 4.0 inches (101 cm) Weight: 0.5 lb. (277 g) Operating Temperature Range: 0°C to 49°C (32°F to 120°F) Operating Humidity Range: 10% to 93% Relative Humidity Maximum Air Velocity: 3000 Ft./Min. (15 M/S) Locking Alarm: Reset by momentary power interruption Fixed Temperature Thermal: 135°F (57°C)
Before Installing
NOTICE: This manual should be left with the owner/user of this equipment.
IMPORTANT: This sensor must be tested and maintained regularly following NFPA 72 requirements. This sensor should be cleaned at least once a year.
The 2451 has been approved for marine use in dry locations by Underwriters Laboratory, Inc. The detector is to be used in dry interior locations only.
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
General Description
The 2451 photoelectronic detectors utilize state-of-the-art, optical sensing chambers. These detectors are designed to provide open area protection, and to be used with compat­ible UL-listed control panels only. Model 2451TH has the same specifications as Model 2451, with the addition of a built-in fixed temperature (135°F–57°C) thermal detec­tion unit. The capability of plugging these detectors into a variety of special bases makes them more versatile than equivalent direct-wired models.
D400-02-01 1 I56-277-10R
Base Selection and Wiring Guide
Refer to the installation instructions for the Plug-in Detector Bases for base selection and wiring instructions. System Sensor has a variety of detector bases available for this smoke detector. This includes 2-wire applications with and without relays and/or current limiting resistors, 4-wire and 120VAC applications. (Note: the 120VAC detector base is not available in Canada.)
All bases are provided with screw terminals for power, ground, remote annunciator connections and relay contact connections, if applicable. The electrical ratings for each detector-base combination are also included in the base installation instructions.
Installation
WARNING
CAUTION
CAUTION






 



NOTE: Wiring must conform to applicable local codes,
ordinances, and regulations.
NOTE: Verify that all detector bases are installed, that
the initiating-device circuits have been tested, and that the wiring is correct. (Refer to detector base manual for testing procedure.)
Disconnect power from initiating-device circuits before installing detectors.
1. Install detectors: a. Place the detector into the detector base b. Turn the detector clockwise until the detector drops
into place.
c. Continue turning detector clockwise to lock it in
place.
2. Tamper-Resistance: This detector includes a tamper­resistant feature that prevents removal of the detector without the use of a tool. To make the detector tamper­resistant, break off the smaller tab at the scribed line on the tamper-resistant tab, on the detector mounting bracket, then install the detector. To remove the detector from the bracket once it has been made tamper-resistant, use a pocket screwdriver, or similar tool, to depress the tamper-resistant tab located in the slot on the mounting bracket. Then, turn the detector counterclockwise until it separates from the base.
3. After all detectors have been installed, apply power to the control unit.
5. Reset the detector at the system control panel.
6. Notify the proper authorities that the system is back on line.
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.
Smoke detectors are not to be used with detector guards unless the combination has been evaluated and found suitable for that purpose.
Figure 1. Bottom and side views showing position of test magnet:
C0495-00
D400-02-01 2 I56-277-10R
Testing
REMOVABLE HEAD COVER
CLEANABLE SCREEN
HEAD COVER REMOVAL SLO
T
VANED CHAMBER
TEST SLOT
P/N RS24 (W/O THERMAL)
Before testing, notify the proper authorities that the smoke detector system is undergoing maintenance and will tem­porarily be out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms.
E. Direct Heat Test (2451TH only) To test the bi-metallic thermal collector, aim a heat source,
such as a low powered heat gun or blow dryer, across the detector. Hold the heat source about 12 inches (30 cm) from the detector to avoid damaging the plastic.
Detectors must be tested after installation and periodic maintenance. To test the 2451: NOTE: Before testing the detector, check to ensure that
the LEDs are blinking. If they are not, the detector has lost power (check the wiring) or it is defective (return for repair).
A. Test Magnet (System Sensor model no. M02-04-00)
1).
2. The LEDs should latch on within 5 seconds indicating alarm and annunciating the panel.
B. Calibrated Test Card (System Sensor no. R59-18-00)
1. Remove the detector cover by placing a small bladed screwdriver in the side slot of the detector cover, twisting it slightly until the cover can be turned counterclockwise for removal.
2. Insert the NO ALARM end of the test card fully into the test slot (see Figure 2) then slide it counterclock­wise until it stops.
3. Wait for at least 20 seconds. The detector should NOT alarm.
4. Remove the test card by sliding it clockwise before removing, then insert the ALARM end.
5. The LEDs should latch on within 20 seconds indicat­ing alarm and annunciating the panel.
6. Put the cover back by gently rotating it clockwise until it locks in place.
When the temperature rises to greater than 135°F
(57°C), the detector should latch into the alarm. The
bi-metallic collector automatically resets after the test. Notify the proper authorities that the detection system is back on line.
Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail these tests they should be returned for repair.
Figure 2:
C. Test Module (System Sensor no. MOD400R) The MOD400R is used with your DMM or voltmeter
D. Aerosol Generator (Gemini 501) Set the generator to represent 4% to 5%/Ft. obscuration
D400-02-01 3 I56-277-10R
to check the detector sensitivity as described in the MOD400R’s manual.
as described in the Gemini 501 Manual. Using the bowl shaped applicator, apply aerosol until the unit alarms.
C0722-00
Maintenance
It is recommended that the detector be removed from its mounting base to facilitate easier cleaning. The detector is cleaned as follows:
NOTE: Before removing the detector, notify the proper
authorities that the smoke detector system is undergoing maintenance and will temporarily be out of service. Disable the zone or system undergo­ing maintenance to prevent unwanted alarms.
3. Remove the screen by pulling it straight out (see Figure
2). Vacuum the inside.
4. Clean the vaned chamber piece by vacuuming or blow­ing out dust and particles.
5. To replace the screen, orient it so that the arrow on top aligns with the test module socket of the detector. Carefully push the screen onto the base making sure it fits tightly to the chamber.
1. Remove the detector cover by placing a small bladed screwdriver in the side slot of the detector cover, twist­ing it slightly until the cover can be turned counterclock­wise for removal.
2. Vacuum the screen carefully without removing it. If fur­ther cleaning is required continue with Step 3, otherwise skip to Step 6.
6. Replace the cover by gently rotating it clockwise until it locks in place.
7. Reinstall the detector.
8. Notify the proper authorities that the system is back on line.
Please refer to insert for the Limitations of Fire Alarm Systems
Three-Year Limited Warranty
System Sensor warrants its enclosed smoke detector to be free from defects 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 workmanship under normal use and service during the three year period commencing 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
D400-02-01 4 I56-277-10R ©2004 System Sensor
Department, 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, modifications, 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 specific legal rights, and you may also have other rights which vary from state to state.
Loading...