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Installation AND MAINTENANCE INSTRUCTIONS
2112/24ATR
Photoelectronic Smoke Detector with
Fixed Heat and Integral Temp-3 Sounder
Figure 1. Wiring diagram for the 2112/24ATR detector:
As with all sounder models, polarity must be observed on the power connections.
+
POWER
TO
DETECTORS
–
UL LISTED
COMPATIBLE
CONTROL
(OPTIONAL)
PANEL
RELEASING
DEVICE
INITIATING
LOOP
Specifications
Diameter:
Height (including mounting bracket):
Weight:
Operating Temperature Range:
Operating Humidity Range:
Latching Alarm:
Audible Signal:
Heat Sensor:
Electrical Ratings
System Voltage (nominal):
Minimum:
Maximum:
Maximum Ripple Voltage:
Standby Current:
Alarm Current:
Reset Voltage:
Reset Time:
Start-up Time:
EOL Relay:
Alarm Initiation and Auxiliary Relay:
Contact Ratings, Resistive Load:
Special Considerations:
Before Installing
Please thoroughly read the 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.
D200-84-00
IMPORTANT: OBSERVE POLARITY
+
P
W
+
R
–
A
ALARM
CONTACT
A
NC
NC
A
COMMON
C
U
NO
X
NO
5.5 inches (140 mm)
2.05 inches (52 mm)
7.5 oz. (210 g)
32° to 100° F (0° to 38° C)
10% to 93% Relative Humidity, Noncondensing
Reset by momentary power interruption
85 dBA minimum when in alarm or with supply polarity reversed
135° F Fixed Temperature Electronic Thermistor
12 or 24 VDC
10 VDC
35 VDC
30% of nom. Voltage (peak to peak)
50 µ A maximum
49 mA typical, 60 mA max. at 12V
57 mA typical, 65 mA max. at 24V
0.8 VDC minimum
1.0 second maximum
30 seconds maximum (after 60 sec. reset)
A77-716B, 12/24 VDC
1A @ 30 VAC
1A @ 30 VDC
Due to the built-in temporal pattern, use these detectors only with a non-coded
power supply.
NC
(OPTIONAL)
COMMON
RELEASING
NO
DEVICE
OPTIONAL CLASS A WIRING
NOTICE: This manual shall 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.
1
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
EOL POWER
SUPERVISION
RELAY (SHOWN
ENERGIZED)
+
P
A77-716 12/24V
W
+
R
–
ALARM
A
CONTACT
A
EOL RESISTOR
NC
A
SPECIFIED BY
C
U
PANEL
MANUFACTURER
X
NO
A78-2336-16
I56-1240-02R
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Related Manuals for System Sensor 2112ж 24ATR
Summary of Contents for System Sensor 2112ж 24ATR
- Page 1 INSTALLATION AND MAINTENANCE INSTRUCTIONS 2112/24ATR Photoelectronic Smoke Detector with Fixed Heat and Integral Temp-3 Sounder Figure 1. Wiring diagram for the 2112/24ATR detector: As with all sounder models, polarity must be observed on the power connections. POWER DETECTORS – UL LISTED...
- Page 2 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; General Description Model 2112/24ATR is a 4-wire photoelectronic smoke de- tector that uses a state-of-the-art optical sensing chamber. This detector also provides restorable, 135˚F fixed-tem- perature heat detection. The units have a heat detection unit that is integrated with the photoelectronic sensor.
- Page 3 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.
- Page 4 Please refer to insert for the Limitations of Fire Alarm Systems 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.
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