Fire-Lite H355HT User Manual

Installation and Maintenance Instructions for

H355, H355R, and H355HT Intelligent Plug-In Temperature Sensors

This sensor must be installed in compliance with the control panel system installation manual. The installation must meet the requirements of the Authority Having Jurisdiction (AHJ). Sensors offer maximum performance when installed in compliance with the National Fire Protection Association (NFPA); see NFPA 72.

Before installing sensors, please read the system wiring and installation manual thoroughly. This manual provides detailed information on sensor spacing, placement, zoning, and special applications. Copies of these manuals are available from Fire•Lite.

GENERAL DESCRIPTION

Models H355, H355R, and H355HT are intelligent sensors that utilize a state-of-the-art thermistor sensing circuit for fast response. These sensors are designed to provide open area protection with 50 foot spacing capability. Model H355 is a fixed temperature sensor with 135° F fixed temperature alarm. Model H355R is a rate-of-rise temperature sensor with 135° F fixed temperature alarm. Model H355HT is a high temperature sensor with 190° F fixed temperature alarm.

Two LEDs on each sensor light to provide a local, visible sensor indication. Remote LED annunciator capability is available as an optional accessory (Part No. RA400Z).

Models H355, H355R, and H355HT require compatible addressable communications to function properly. Connect these sensors to listed-compatible control panels only.

SPECIFICATIONS

Diameter: 6.1 inches (155 mm) installed in B350LP Height: 2.1 inches (51 mm) Weight: 4.8 ounces (137 gm) Installation Temperature: –4°F to 100°F (–20°C to 38°C); H355 and H355R

–4°F to 150°F (–20°C to 66°C); H355HT Operating Humidity Range: 10% to 93% Relative Humidity Noncondensing Mounting: B350LP flanged base Voltage Range: 15 to 32 Volts DC Peak Standby Current: 300 µA@ 24 VDC (one communication every 5 sec.with LED blink enabled) LED Current: 6.5 mA @ 24 VDC Fixed Temperature Rating: 135°F (57°C); H355 and H355R

190°F (88°C); H355HT Rate of Rise Detection: Responds to greater than 15°F/min.; H355R

F300-25-00 1 I56-1972-00R

Fire•Lite, One Fire•Lite Place, Northford, CT 06472

WIRING GUIDE

All wiring must be installed in compliance with the National Electrical Code, applicable local codes and the Authority Having Jurisdiction. Proper wire gauges should be used. The installation wires should be color coded to limit wiring mistakes and ease system troubleshooting. Improper connections will prevent a system from responding properly in the event of a fire.

Remove power from the communication line before installing sensors.

1. Wire the sensor base (supplied separately) per the wiring diagram, see Figure 1.

2. Set the desired address on the sensor address switches, see Figure 2.

3. Install the sensor into the sensor base. Push the sensor into the base while turning it clockwise to secure it in place.

4. After all sensors have been installed, apply power to the control unit and activate the communication line.

5. Test the sensor(s) as described in the TESTING section of this manual.

TAMPER RESISTANCE

The sensor base includes a tamper proof feature which when activated prevents removal of the sensor without the use of a tool. See the installation instruction manual for the sensor base for details in using this feature.

TESTING SENSITIVITY

Before testing, notify the proper authorities that the system is undergoing maintenance, and will temporarily be out of service. Disable the system to prevent unwanted alarms.

All sensors must be tested after installation and periodically thereafter. Testing methods must satisfy the Authority Having Jurisdiction (AHJ). Sensors offer maximum performance when tested and maintained in compliance with NFPA 72.

A. Test Magnet (p/n M02-04-01 or M02-09-00)

1. Place the optional test magnet against the cover in the magnet test area, as shown in Figure 3, to activate the test

feature.

2. The LEDs should latch on within 10 seconds, indicating alarm and annunciating the panel.

3. Reset the detector at the system control panel.

F300-25-00 2 I56-1972-00R

LISTED COMPATIBLE

CONTROL PANEL

Figure 2

Figure 1

CAUTION: Do not loop wire under terminals 1 or 2.

Break wire run to provide supervision of connections.

A78-2745-00

TENS

Breakaway Stop

11 12

ONES

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