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Firelite SD355 Addressable Photoelectric Smoke Detector fixed temperature of 135°F

The SD355 addressable, low-profile plugin photoelectric detectors use a state-of-the-art photoelectric sensing chamber with communications to provide open area protection and are used exclusively with Fire•Lite’s Addressable Fire Alarm Control Panels (FACPs).

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FireLite

Detection Devices SD355

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The SD355(A) and SD355T(A) addressable, low-profile plugin photoelectric detectors use a state-of-the-art photoelectric sensing chamber with communications to provide open area protection and are used exclusively with Fire•Lite’s Addressable Fire Alarm Control Panels (FACPs). The SD355T(A) adds thermal sensors that will alarm at a fixed temperature of 135°F (57°C). Since these detectors are addressable, they will help emergency personnel quickly locate a fire during its early stages, potentially saving precious rescue time while also reducing property damage. Two LEDs on each sensor light to provide a local, visible sensor indication. Remote LED annunciator capability is available as an optional accessory (P/N RA400Z).

Features

SLC Loop:

  • Two-wire loop connection
  • Unit uses base for wiring

Addressing:

  • Addressable by device
  • Direct Decade entry of address: 01 – 99 with MS-9200 series, and 01 – 159 with MS-9600 series

Architecture:

  • Unique single-source, dual-chamber design to respond quickly and dependably to a broad range of fires
  • Sleek, low-profile design
  • Integral communications and built-in type identification
  • Built-in tamper-resistant feature
  • Removable cover and insect-resistant screen for simple field cleaning

Operation:

  • Withstands air velocities up to 4,000 feet-per-minute (20 m/sec.) without triggering a false alarm
  • Factory preset at 1.5% nominal sensitivity for panel alarm threshold level.
  • Visible LED "blinks" when the unit is addressed (communicating with the fire panel) and latches on in alarm

Mechanicals:

  • Sealed against back pressure
  • Direct surface mounting or electrical box mounting
  • Mounts to: single-gang box, 3.5" (8.89 cm) or 4.0" (10.16cm) octagonal box, or 4.0" (10.16 cm) square electrical box (using a plaster ring — included).

Other system features:

  • Fully coated circuit boards and superior RF/transient protection
  • 94-V0 plastic flammability rating
  • Low standby current

Options:

  • Remote LED output connection (P/N RA400Z)

Applications

Use photoelectric detectors in life-safety applications to provide a broad range of fire-sensing capability, especially where smoldering fires are anticipated. Ionization detectors are often better than photoelectric detectors at sensing fast, flaming fires.

Construction

These detectors are constructed of off-white LEXAN®. SD355(T) plug-in, low-profile smoke detectors are designed to commercial standards and offer an attractive appearance.

Installation

SD355(T) plug-in detectors use a detachable mounting base to simplify installation, service and maintenance. Mount base on box which is at least 1.5 inches (3.81 cm) deep. Suitable boxes include:

  • 4.0" (10.16 cm) square box with plaster ring
  • 4.0" (10.16 cm) octagonal box
  • 3.5" (8.89 cm) octagonal box
  • Single-gang box

Note: Because of the inherent supervision provided by the SLC loop, end-of-line resistors are not required. Wiring "T-taps" or branches are permitted for Style 4 (Class B) wiring.

Operation

Each SD355(T) uses one of 99 possible addresses on the MS- 9200 series and up to 318 (159 on each loop) on the MS-9600 Signaling Line Circuit (SLC). It responds to regular polls from the system and reports its type and status. The SD355(T) addressable photoelectric sensor’s unique unipolar chamber responds quickly and uniformly to a broad range of smoke conditions and can withstand wind gusts up to 4,000 feet-per-minute (20 m/sec.) without sending an alarm level signal. Because of its unipolar chamber, the SD355(T) is approximately two times more responsive than most photoelectric sensors. This makes it a more stable detector.

Detector Sensitivity Test

Each detector can have its sensitivity tested (required per NFPA 72, Chapter 10 on Inspection, Testing and Maintenance) when installed/connected to a MS-9200 series or MS-9600 series addressable fire alarm control panel. The results of the sensitivity test can be printed off the MS-9200 series or MS-9600 series for record keeping.

Specifications

  • Voltage range: 15 – 32 VDC (peak)
  • Standby current: 300 @ 24 VDC
  • LED current: 6.5 mA @ 24 VDC (latched "ON")
  • Air velocity: 4,000 ft./min. (20 m/sec.) maximum
  • Diameter: 6.1" (15.5 cm) installed in B350LP base
  • Height: 2.1" (5.33 cm) installed in B350LP base
  • Weight: 3.6 oz. (102 g)
  • Operating temperature range: for SD355(A): 0°C to 49°C
  • (32°F to 120°F); for SD355T(A): 0°C to 38°C (32°F to 100°F)
  • Temperature: 0°C – 49°C (32°F – 120°F)
  • Relative humidity: 10% – 93%, non-condensing

Listings

Listings and approvals below apply to the SD355(A) and SD355T(A) detectors. In some cases, certain modules may not be listed by certain approval agencies, or listing may be in process. Consult factory for latest listing status.

  • UL Listed, file S1059
  • ULC Listed, file S6963
  • CSFM approved: file 7272-0075:194
  • MEA approved: file 243-02-E
  • FM approved.
Brand FireLite

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Firelite SD355 Addressable Photoelectric Smoke Detector fixed temperature of 135°F