User guide

D200-83-00 1 I56-1239-02R
2112/24R and 2112/24TR Photoelectronic
Smoke Detectors
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: [phone]
Specifications
Diameter: 5.5 inches (140 mm)
Height (including mounting bracket): 1.7 inches (43 mm)
Weight: 6.8 oz. (190 g)
Operating Temperature Range Model 2112/24R: 32°F to 120°F (0°C to 49°C)
Model 2112/24TR: 32°F to 100°F (0°C to 39°C)
Operating Humidity Range: 10% to 93% Relative Humidity, Noncondensing
Latching Alarm: Reset by momentary power interruption
Heat Sensor (Model 2112/24TR only): 135°F Fixed Temperature Electronic Thermistor
Electrical Ratings
System Voltage (nominal): 12 or 24 VDC
Minimum: 10 VDC
Maximum: 35 VDC
Maximum Ripple Voltage: 30% of nom. Voltage (peak to peak)
Standby Current: 50 µA maximum
Alarm Current: 28 mA typical, 35 mA max. at 12V
36 mA typical, 45 mA max. at 24V
Reset Voltage: 0.8 VDC minimum
Reset Time: 0.3 seconds maximum
Start-up Time: 30 seconds maximum (after 60 sec. reset)
EOL Relay: A77-716B, 12/24 VDC
Alarm Initiation and Auxiliary Relay: 1A @ 30 VAC
Contact Ratings, Resistive Load: 1A @ 30 VDC
Figure 1. Wiring diagram for the 2112/24R and 2112/24TR detector:
A78-2336-16
OPTIONAL CLASS A WIRING
EOL RESISTOR
SPECIFIED BY
PANEL
MANUFACTURER
EOL POWER
SUPERVISION
RELAY (SHOWN
ENERGIZED)
A77-716 12/24V
POWER
TO
DETECTORS
UL LISTED
COMPATIBLE
CONTROL
PANEL
INITIATING
LOOP
+
–
P
W
R
A
U
X
P
W
R
A
U
X
+
+
–
A
A
NC
C
NO
+
+
–
A
A
NC
C
NO
ALARM
CONTACT
ALARM
CONTACT
(OPTIONAL)
RELEASING
DEVICE
NC
COMMON
NO
(OPTIONAL)
RELEASING
DEVICE
NC
COMMON
NO