System Sensor B401R User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS
B401R Plug-in Detector Base
For use with the following smoke detectors: 1451E and 2451E
Specifications
Diameter: 10.2 cm (4.0 inches) Height: 2.0 cm (0.8 inches) Weight: 152 g (0.34 lb.) Operating Temperature: –10° to +60°C (14° to 140°F) Operating Humidity: 10% to 93% Relative Humidity
Electrical Ratings — includes base and detector
Voltage: 24 VDC Maximum Ripple Voltage: 4 Volts peak to peak Start-up Capacitance: 0.02 µF Maximum Standby Ratings: 15 VDC Minimum
32 VDC Maximum 120 µA Maximum
Alarm Ratings: 10 mA Minimum at 10.5 VDC
62mA Maximum at 32 VDC (If used, the RA400Z Remote Annunciator operates within the specified detector alarm currents.)
Reset Voltage: 2.5 VDC Minimum
A Division of Pittway
System Sensor Europe
Via Caboto 19, 34143, Trieste, Italy
Before Installing
Please thoroughly read the System Sensor Manual I56-407, Guide For Proper Use of System Smoke Detectors, which pro­vides 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: The detector used with this base must be tested and maintained regularly following NFPA 72 require­ments. The detector used with this base should be cleaned at least once a year.
General Description
The B401R plug-in detector base is used with System Sen­sor model 2451E photoelectronic detector head and model 1451E ionization detector head. The capability of plugging these detectors into a variety of special bases makes them more versatile than equivalent direct-wired models. Refer to the System Sensor catalog for other plug-in detector bases.
The B401R base is intended for use in 2-wire systems, with screw terminals provided for power, ground, and remote annunciator connections. The B401R base also contains a resistor to provide current limiting in the alarm state.
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Base Terminals
NO. FUNCTION
1 REMOTE ANNUNCIATOR (+) 2 NEGATIVE (–) V IN, REMOTE ANNUNCIATOR (–) 3 NEGATIVE (–) V OUT 4 NOT USED 5 POSITIVE (+) V IN AND V OUT
NOTE: If remote annunciator is not used, polarity to these
terminals may be reversed.
Mounting
These detector bases mount to typical junction boxes. In­stall the base to the box using the screws supplied with the junction box. Figure 2 shows mechanical mounting details.
Wiring Installation Guidelines
For signal wiring, (the wiring between interconnected de­tectors or from detectors to auxiliary devices), it is recom­mended that single-conductor wire be no smaller than
1.5mm2, and that two- or three-conductor wire be no smaller than 1.0mm2. For best system performance, alarm loop conductors should be installed in separate grounded conduit or shielded cable to protect the alarm loop from ex­traneous electrical interference.
Figure 1. Terminal layout:
3
2
1
5
4
Figure 2. Mounting base to box:
SHORTING SPRING
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Smoke detectors and alarm system control panels have specifications for allowable loop resistance. Consult the control panel manufacturer’s specifications for the total loop resistance allowed for the particular model control panel being used before wiring the detector loops.
Wiring Instructions
Wire connections are made by stripping about 1 cm (3/8") of insulation from the end of the wire (use strip gauge molded in base), sliding the bare end of the wire under the clamping plate, and tightening the clamping plate screw.
The zone wiring of the detector bases should be checked before the detector heads are installed. To make this possible, this base contains a special spring-type shorting jumper (shown in Figure 2). After a detector base is properly wired and mounted to an electrical box, make sure that the shorting spring is in contact with terminal 3.
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REMOTE
ANNUNCIATOR
2
1
3
5
4
+
2-WIRE CONTROL PANEL
+
REMOTE
ANNUNCIATOR
2
1
3
5
4
+
E O L
CLASS A OPTIONAL WIRING
NOTE: IF REMOTE ANNUNCIATOR
IS NOT USED, POLARITY TO THESE TERMINALS MAY BE REVERSED.
Figure 3. Typical wiring diagram for 2-wire detector system:
CAUTION
Do not loop wire under terminals. Break wire run to provide supervision of connections.
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This temporary connection permits the wiring of the loop to be checked for continuity before installation of the detector heads.
To activate this feature, break off the tab on the detector base (see Figure 4), then install the detector. To remove the detector from the base after the tamper-resistance feature
has been activated, place a small standard screwdriver into The shorting spring in the base will automatically disengage when the detector head is removed from the base. DO NOT remove the shorting spring, since it reengages as the detector head is turned into the base,
the small hole on the side of the base, and push the plastic
lever away from the detector head (see Figure 5). This will
allow the detector to be rotated counterclockwise for
removal. completing the circuit.
The tamper-resistance feature may be defeated by breaking Once all the detector bases have been wired and mounted, and the loop wiring has been checked, the detector heads
and removing the plastic lever from the base, however this
prevents ever using the feature again. may be installed in the bases.
Optional Remote Annunciator Units Tamper-resistance Feature
This detector base also includes an optional tamper-resis­tance feature that, when activated, prevents removal of the detector without the use of a tool.
The model RA400Z Remote Annunciator LED is available
as an optional accessory. This unit has a rectangular plate
that fits U.S. single-gang light switch boxes. If a different
type of remote annunciator is used, it must use less than
5ma at 3.0 V.
Figure 4. Activating tamper-resistance feature: Figure 5. Removing detector head from base:
PLASTIC LEVER
BREAK TAB AT DOTTED LINE BY TWISTING TOWARD CENTER OF BASE.
USE SMALL-BLADED SCREWDRIVER TO PUSH PLASTIC LEVER IN DIRECTION OF ARROW.
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WARNING
The Limitations of Property Protection Smoke Detectors
The smoke detector used with this base is designed to activate and ini­tiate emergency action, 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 de­lays 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 capa­bility 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 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 early warning of a specific type of fire.
In general, detectors cannot be expected to provide warnings for fires re­sulting from inadequate fire protection practices, violent explosions, es­caping gases which ignite, improper storage of flammable liquids like cleaning solvents which ignite, other similar safety hazards, arson, smok­ing 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 dilu­tion of smoke densities created by frequent and rapid air exchanges. Addi­tionally, 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.
Three-Year Limited Warranty
System Sensor warrants its enclosed smoke detector base 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 base. 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 base 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 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.
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© System Sensor 1996
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