D400-54-00 REV#-002
I56-023-000
4451HTA Plug-in Fixed
Intermediate Temperature
Thermal Detectors
INSTALLATION AND MAINTENANCE INSTRUCTIONS
Before Installing
This detector must be installed in compliance with the con-
trol panel installation manual and meet the requirements
of the authority having jurisdiction. In addition, the National
Fire Protection Association has published codes, stan-
dards, and recommended practices for the installation and
use of the above appliances (NFPA 72). Please also refer
to CAN/ULC-S524 and CEC Part , Sec. 32. Therefore,
the installer must be familiar with these requirements, with
local codes, and any special requirements of the authority
having jurisdiction.
NOTICE:
This manual should be left with the owner/user
of this equipment.
IMPORTANT:
This detector must be tested and maintained
regularly following CAN/ULC-S536 requirements. The de-
tector should be cleaned at least once a year.
General Description
The 4451HTA detector is a fixed intermediate tempera
-
ture alarm thermal detector utilizing a state-of-the-art dual
thermistor sensing circuit. This detector is designed to be
used with compatible control panels only.
Specifications
Diameter:
4. inches (04 mm)
Height:
2. inches (53 mm)
Weight:
5 ounces (50 g)
Installation Temperatures:
32° to 50°F (0° to 66°C)
Operating Humidity Range:
0% to 93% Relative Humidity
Latching Alarm:
Reset by momentary power interruption
Sensitivity:
90°F (88°C)
Operating Voltage:
5-35 VDC
Standby Current:
00 µA
Two LEDs on each detector light to provide 360° visibility
of the detector indication. Remote LED annunciator capa-
bility is provided as standard, and the RA400ZA remote
LED annunciator is available as an optional accessory.
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 available a variety of detector bases for these
heat detectors, including 2-wire applications with and with-
out relays and/or current limiting resistors for use with con-
trol panels that require one. These detectors are only to be
used with 400 and 400B series bases.
Install the System Sensor plug-in base to be used with the
detector following the instructions in the base manual.
Installation
NOTE:
All wiring must conform to applicable installation
codes and regulations.
658 Kitimat Rd., Unit #6, Mississauga, Ontario, L5N 3T5
-800-SENSOR2, FAX: 905-82-077
www.systemsensor.ca
