Pittway Fire-Lite SD350

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F300-14-00 1 I56-035-00R

Fire•Lite, One Fire•Lite Place, Northford, CT 06472, (203) 484-7161

SD350 and SD350T Addressable Photoelectronic Smoke Sensors

Installation and Maintenance Instructions

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.

GENERAL DESCRIPTION

Model SD350 and SD350T are addressable sensors that combine a state-of-the-art photoelectronic sensing chamber with communications. The SD350T

adds thermal sensors that will alarm at a fixed temperature of 135°F. These sensors are designed to provide open area protection and are intended for use

with compatible control panels only.

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).

SPECIFICATIONS

Operating Voltage Range: 15 to 32 VDC

Standby Current: 300

A @ 24 VDC (one communication every

5 seconds with LED blink enabled)

Max. Alarm Current (LED on): 6.5 mA @ 24 VDC

Operating Humidity Range: 10% to 93% Relative Humidity, noncondensing

Operating Temperature Range: 0° to 49°C (32° to 120°F); SD350

Operating Temperature Range: 0° to 38°C (32° to 100°F); SD350T

Height: 1.7 inches (43 mm) installed in B310LP Base

Diameter: 6.2 inches (155 mm) installed in B310LP Base

Weight: 3.6 oz. (102 g)

SPACING

Fire•Lite recommends spacing sensors in compliance with NFPA 72. In low air flow

applications with smooth ceilings, space sensors 30 feet apart. For specific information

regarding sensor spacing, placement, and special applications, refer to NFPA 72 or

the Guide For Proper Use of System Smoke Detectors, available from

Fire•Lite (P/N I56-407-XX).

WIRING INSTRUCTIONS

All wiring must be installed in compliance with the National Electrical Code,

applicable local codes, and any special requirements of 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.

Disconnect power from the communication line before installing sensors.

All wiring must conform to applicable local codes, ordinances, and regulations.

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

2. Set the desired address on the sensor address switches.

NOTE: Some panels support extended addressing. In order to set the sensor above address 99

on compatible systems, carefully remove the stop on the upper rotary switch with thumb or as shown in 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.

TESTING

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. The sensor can be tested in the following ways:

A. Functional: Magnet Test (P/N M02-04-01 or M02-09-00)

This sensor can be functionally tested with a test magnet. The test magnet electronically simulates

smoke in the sensing chamber, testing the sensor electronics and connections to the control

panel.

1. Hold the test magnet in the magnet test area as shown.

2. The sensor should alarm the panel.

Two LEDs on the sensor are controlled by the panel to indicate sensor status. Coded signals,

transmitted from the panel, can cause the LEDs to blink, latch on, or latch off. Refer to the con-

trol panel technical documentation for sensor LED operation and expected delay to alarm.

–

UL LISTED COMPATIBLE

CONTROL PANEL

OPTIONAL RETURN LOOP

REMOTE ANNUNCIATOR

+ –

A78-2461-00

CAUTION

Dust covers provide limited protection against airborne dust particles during shipping. Dust covers must be

removed before the sensors can sense smoke. Remove sensors prior to heavy remodeling or construction.

Figure 1. Wiring Diagram

BREAKAWAY STOP

Figure 2. Rotary Address Switches

Figure 3.

CAUTION: Do not loop wire under

terminals 1 or 2. Break

wire run to provide

supervision of connections.

A78-2462-00

LED STATUS

INDICATORS

TEST

MAGNET

PAINTED

SURFACE

PAINTED

SURFACE

MAGNET TEST

MARKER

TEST

MAGNET

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Do you have a question about the Pittway Fire-Lite SD350 and is the answer not in the manual?

The Fire Lite SD350 and SD350T are addressable photoelectronic smoke sensors designed for fire detection systems. These sensors combine a state-of-the-art photoelectronic sensing chamber with advanced communication capabilities. The SD350T model includes additional thermal sensors that activate an alarm at a fixed temperature of 135°F (57.2°C), providing an extra layer of protection. These devices are specifically designed for open area protection and are intended for use with compatible control panels.

Function Description:

The primary function of these sensors is to detect smoke in an area. When smoke enters the sensing chamber, the photoelectronic technology triggers an alarm, which is then communicated to the control panel. The SD350T also monitors ambient temperature, alarming if it reaches its fixed temperature threshold. Each sensor is equipped with two LEDs that provide local, visible status indications. An optional remote LED annunciator (Part No. RA400Z) can also be connected for remote status monitoring. The sensors are addressable, meaning each device has a unique address that allows the control panel to identify its exact location and status within the system. This addressability is configured using rotary address switches on the sensor base.

Important Technical Specifications:

Operating Voltage Range: 15 to 32 VDC
Standby Current: 300µA @ 24 VDC (with one communication every 5 seconds and LED blink enabled)
Max. Alarm Current (LED on): 6.5 mA @ 24 VDC
Operating Humidity Range: 10% to 93% Relative Humidity, non-condensing
Operating Temperature Range (SD350): 0° to 49°C (32° to 120°F)
Operating Temperature Range (SD350T): 0° to 38°C (32° to 100°F)
Height: 1.7 inches (43 mm) when installed in the B310LP Base
Diameter: 6.2 inches (155 mm) when installed in the B310LP Base
Weight: 3.6 oz. (102 g)

Usage Features:

Installation: Sensors must be installed in compliance with the control panel system manual, the National Electrical Code, applicable local codes, and the requirements of the Authority Having Jurisdiction (AHJ). Proper wire gauges and color-coded wiring are essential to prevent mistakes and ensure proper system response. Power to the communication line must be disconnected before installing sensors. The sensor base is wired first, then the desired address is set on the rotary switches. For addresses above 99 on compatible systems, a breakaway stop on the upper rotary switch may need to be removed. The sensor is then installed into the base by pushing and turning clockwise until it secures in place.
Spacing: Fire Lite recommends spacing sensors in compliance with NFPA 72. In low airflow applications with smooth ceilings, sensors should be spaced 30 feet apart. Specific guidance on spacing, placement, and special applications can be found in NFPA 72 or the "Guide For Proper Use of System Smoke Detectors" (P/N 156-407-XX).
Testing: Regular testing is crucial after installation and periodically thereafter. The system should be disabled and proper authorities notified before testing to prevent unwanted alarms.
- Functional Magnet Test: A test magnet (P/N M02-04-01 or M02-09-00) can be used to electronically simulate smoke in the sensing chamber. Holding the magnet in the designated test area should cause the sensor to alarm the panel. The sensor's LEDs will indicate its status, controlled by coded signals from the panel.
- Smoke Entry Test (Aerosol Generator): The GEMINI model 501 aerosol generator can be used for smoke entry testing. Set the generator to represent 4-5% per foot obscuration and apply aerosol until the panel alarms.
- Direct Heat Method (SD350T only): A 1000-1500 watt hair dryer can be used to test the thermal sensors. Direct the heat toward either of the side thermistors from about 12 inches away to avoid damaging the plastic. The detector will reset only after it has cooled sufficiently.
FCC Compliance: The device complies with Part 15 of the FCC Rules, ensuring it does not cause harmful interference and accepts any interference received.

Maintenance Features:

Cleaning: It is recommended to remove the detector from its mounting base for cleaning. Before removal, notify the proper authorities and disable the system to prevent unwanted alarms.
1. Remove the detector cover by prying away the four side tabs with a small-bladed screwdriver and pulling the cover from the base.
2. Carefully vacuum the screen. If further cleaning is needed, proceed to step 3; otherwise, skip to step 8.
3. Remove the screen assembly by pulling it straight out.
4. Remove the sensing chamber cover by pulling it straight out.
5. Clean the vaned chamber piece by vacuuming or blowing out dust and particles.
6. Replace the sensing chamber cover, aligning the arrow on the top with the arrow on the printed circuit board.
7. To replace the screen, place it over the chamber assembly, turning it until it snaps into place.
8. Replace the cover, aligning the LEDs, and gently pushing it until it locks into place.
9. Reinstall the detector.
10. Test the detector as described in the TESTING section.
11. Reconnect disabled circuits and notify proper authorities that the system is back online.
Dust Covers: Dust covers provide limited protection during shipping but must be removed before the sensors can sense smoke. Sensors should also be removed prior to heavy remodeling or construction to prevent damage from airborne dust particles.
Troubleshooting: If a sensor fails any test after cleaning, it must be replaced and returned for repair. Improper wiring connections can prevent the system from responding correctly in a fire event.