System Sensor 4451HTA Installation And Maintenance Instructions

Installation AND MAINTENANCE INSTRUCTIONS
4451HTA Plug-in Fixed
Intermediate Temperature
Thermal Detectors

Specifications

Diameter:
Height:
Weight:
Installation Temperatures:
Operating Humidity Range:
Latching Alarm:
Sensitivity:
Operating Voltage:
Standby Current:

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.
D400-54-00 REV#-002
4. inches (04 mm)
2. inches (53 mm)
5 ounces (50 g)
32° to 50°F (0° to 66°C)
0% to 93% Relative Humidity
Reset by momentary power interruption
90°F (88°C)
5-35 VDC
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

658 Kitimat Rd., Unit #6, Mississauga, Ontario, L5N 3T5
-800-SENSOR2, FAX: 905-82-077
codes and regulations.
www.systemsensor.ca
I56-023-000