System Sensor 2551HR Plug-in Intelligent - Manual

D500-41-00 1 I56-1437-00
2551HR Plug-in Intelligent
Photoelectronic Sensors
with Communications
INSTALLATION AND MAINTENANCE INSTRUCTIONS
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
Before Installing
Please thoroughly read the system wiring and installation
manual, which provides detailed information on sensor
spacing, placement, zoning, and special applications. Cop-
ies of these manuals are available from System Sensor.
NOTICE: This manual should be left with the owner/user
of this equipment.
IMPORTANT: These detectors must be tested and main-
tained regularly following NFPA 72 requirements. These
detectors should be cleaned at least once a year.
General Description
The model 2551HR photoelectronic sensors utilize a state-
of-the-art, optical sensing chamber. These sensors are de-
signed for use with duct housings DH500 and DH500AC/
DC only, and to be used with compatible control panels
only. Connect detectors only to compatible control units.
(For installation in Canada, refer to CAN/ULC-S524-M86,
Standard for the Installation of Fire Alarm Systems and CEC
Part 1, Sec. 32.)
Two LEDs on each sensor light to provide a local 360
°
vis-
ibility of the sensor indication. The LEDs can be latched
ON by code command from the panel for an alarm indica-
tion. The LEDs can also be unlatched to the normal condi-
tion by code command. Remote LED annunciator
Specifications
Diameter: 6.1 inches (15.5 cm) installed in B501B
4.0 inches (10.2 cm) installed in B501
Height: 3.2 inches (8.1 cm)
Add 0.5 inches (1.3 cm) for thermal models
Weight: 9.6 ounces (272 g)
Installation Temperature Range
2551: 32
°
to 120
°
F (0
°
to 49
°
C)
2551T: 32
°
to 100
°
F (0
°
to 38
°
C)
Installation Humidity Range: 10% to 93% Relative Humidity
Mounting: B501B flanged base
B501 flangeless base
B501 with RMK400 recessed mounting kit
Maximum Air Velocity: 3000 Ft./Min. (15 m/S)
Voltage Range: 15 to 32 Volts DC Peak
Standby Current: 230
µ
A @ 24 VDC
LED Current: 6.5 mA @ 24 VDC
capability is available as an optional accessory (part no.
RA400Z).
Wiring Guide
Refer to the installation instructions for the particular plug-
in base being used: 1) for the B501B base (D550-01-01); 2)
for the B501 base (D550-02-00); 3) for the RMK400 used
with the B501 base (D450-07-00). Bases are provided with
screw terminals for power, ground, and remote annunciator
connections (see Figure 1).
NOTE: All wiring must conform to applicable local codes,
ordinances, and regulations.
NOTE: Verify that all sensor bases are installed and that
the wiring polarity is correct at each base.
WARNING
Remove power from the loop before installing sensors.
1. Install sensors:
a. Verify that the sensor type matches the type written
on the label on the base.
b. Set the sensor to a desired address and then write the
address on the label on the base.
c. Place the sensor into the sensor base.