Edwards Signaling SuperDuct ESD-2W Manual
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Edwards Signaling SuperDuct ESD-2W Manual

Conventional two-wire duct
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Enlarged version
SuperDuct Conventional Two-Wire Duct
Smoke Detector
P/N 3100737 • Rev 1.0 • 06SEP05
Content
Introduction ............................................................................1
Related documents ..................................................................1
Duct smoke detector limitations ...............................................1
Product description ...............................................................1
Overview ..................................................................................1
Description ...............................................................................2
Features ...................................................................................2
Specifications ...........................................................................3
Accessories..............................................................................3
Operation ................................................................................4
Controls and indicators.............................................................4
Normal state.............................................................................4
Alarm state ...............................................................................4
Trouble state ............................................................................4
Installation ..............................................................................4
Installation guidelines ...............................................................4
Installation sequence................................................................5
Wiring .......................................................................................6
Maintenance and service.......................................................6
Recommended service schedule .............................................6
Testing the duct smoke detector ..............................................6
Troubleshooting .......................................................................6
Cleaning the duct smoke detector ............................................6
Technical Bulletin
SuperDuct Conventional Two-Wire Duct Smoke Detector

Introduction

This document provides technical information for the
SuperDuct Conventional Two-Wire Duct Smoke Detector
(referred to simply as duct smoke detector for the remainder of
this document.)
This document applies to the following duct smoke detector
models: ESD-2W and SD-2W.

Related documents

In addition to this document, important information regarding
the proper installation and maintenance of duct smoke
detectors is provided in the following standards:
•
NFPA 70 National Electrical Code
•
NFPA 72 National Fire Alarm Code
•
NFPA 90A Installation of Air Conditioning and
Ventilating Systems
•
UL 268A Smoke Detectors for Duct Applications
•
ULC 529 Smoke Detectors for Fire Alarm Systems
•
NEMA Guide for Proper Use of Smoke Detectors in Duct
Applications

Duct smoke detector limitations

SuperDuct duct smoke detectors will not operate without
electrical power.
SuperDuct duct smoke detectors will not operate as designed
outside of the listed electrical and environmental
specifications.
SuperDuct duct smoke detectors will not sense smoke unless
the ventilation system is operating and the sensor's cover is
properly installed.
SuperDuct duct smoke detectors may not operate as designed
unless installed in accordance with these instructions and all
applicable national and local codes as determined by the local
authority having jurisdiction.

Product description

Overview

The duct smoke detector is used to detect smoke in the
protected premises' HVAC system under extended
temperature ranges. It can be installed in self-contained
commercial rooftop HVAC systems where the HVAC
components (compressor, condensing unit, heating coils, etc.)
are enclosed in a single package to protect them from adverse
1

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Summary of Contents for Edwards Signaling SuperDuct ESD-2W

  • Page 1: Table Of Contents

    SuperDuct Conventional Two-Wire Duct Introduction Smoke Detector P/N 3100737 • Rev 1.0 • 06SEP05 This document provides technical information for the SuperDuct Conventional Two-Wire Duct Smoke Detector (referred to simply as duct smoke detector for the remainder of this document.) This document applies to the following duct smoke detector models: ESD-2W and SD-2W.

  • Page 2: Description

    environmental conditions. Hinged or removable service panels duct and is directed back into the ventilation system through typically provide access to the equipment. an exhaust tube. The difference in air pressure between the two tubes pulls the sampled air through the sensing chamber. The duct smoke detector’s primary purpose is to provide early When a sufficient amount of smoke is detected in the sensing warning of an impending fire and shut down the HVAC unit in...

  • Page 3: Specifications

    Exhaust tube Exhaust gasket 1/2-in conduit couplings (supplied by installer) Detector housing and electronics Detail A Conduit support plate Intake gasket Detector cover Plug Sampling tube Conduit nuts (ordered separately) (supplied by installer) Coupling Detail A Figure 2: Duct smoke detector exploded view Temperature (ULC): -29 to 49 °C (-20 to 120.2 °F) Specifications Humidity (UL and ULC): 93% RH, noncondensing...

  • Page 4: Operation

    Alarm state Model Description The duct smoke detector enters the alarm state (is activated) SD-MAG Test magnet kit when the amount of smoke in its sensing chamber exceeds its SD-VTK Air velocity test kit alarm threshold setting or when an alarm test is initiated. Upon entering the alarm state, the duct smoke detector’s: •...

  • Page 5: Installation Sequence

    Bend or other obstruction Sampling tube connector Airflow 6 to 10 duct widths 1 duct width • For detection of smoke in the supply air system, install Sampling tube Detector (fully assembled) the duct smoke detector in the supply air duct at a point downstream from the supply fan and air filters Figure 4: Sampling tube installed from the front •...

  • Page 6: Wiring

    Wiring Troubleshooting Figure 8 and Figure 9 show how to wire the duct smoke You can troubleshoot problems while the duct smoke detector detector and its accessories. The duct smoke detector’s IDC is in operation. However, be careful not to place the duct wiring differs depending on the control panel’s short circuit smoke detector in the alarm state since the procedure for current specification.
  • Page 7 Before cleaning the duct smoke detector, notify the Caution: proper authorities that the fire alarm system is undergoing maintenance and take steps to prevent the control panel from responding to a false alarm. HVAC duct Sampling tube Detector housing Optic Airflow plate Retainer...
  • Page 8 8.70 in (22.1 cm) 8.15 in (20.7 cm) 7.75 in (19.7 cm) 1.60 in 3.08 in (7.82 cm) (4.06 cm) 2.28 in (5.78 cm) 5.45 in (13.84 cm) 1.90 in (4.83 cm) 5.40 in 1.38 in (13.72 cm) (3.51 cm) Figure 7: Mechanical dimensions Technical Bulletin SuperDuct Conventional Two-Wire Duct Smoke Detector...
  • Page 9 Notes [1] End-of-line resistor is required Alarm Alarm on the last detector only. The value Auxiliary Auxiliary relay relay is determined by the fire alarm equipment equipment control panel's initiating device circuit. [2] No more than one remote test SD-TRK or SD-TRM [2] SD-TRK or SD-TRM [2] station can be connected at the same time.
  • Page 10 Technical Bulletin SuperDuct Conventional Two-Wire Duct Smoke Detector...

This manual is also suitable for:

Superduct sd-2w

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