Distech Controls GS-SDD Series Hardware Installation Manual
Distech Controls GS-SDD Series Hardware Installation Manual

Distech Controls GS-SDD Series Hardware Installation Manual

Duct smoke detectors

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GS-SDD Series
Duct Smoke Detectors
Figure 1: GS-SDD Series Duct Smoke Detectors

Product Description

This document describes the hardware installation procedures for the
GS-SDD Series duct smoke detectors. They are the latest innovation
for early detection of smoke and products of combustion present in air
moving through HVAC ducts in Commercial, Industrial and Residential
applications.
The GS-SDD Series, 4-wire duct housing will accommodate either the
ionization sensor or the photo electronic sensor. The interchangeable
detector heads allow easy removal for quick cleaning and
Maintenance, or a change in application without removing the duct
housing.
The GS-SDD duct smoke detectors sample air currents passing
through a duct and give dependable performance for management of
fans, blowers, and air conditioning systems.
Output terminals are provided for remote accessories such as horns,
strobes, remote status indicators and test/reset key switches or push
buttons.
These duct smoke detectors include many features that represent true
innovations from current generation duct smoke detectors. It is
designed and built to meet all local requirements, as well as the NFPA
regarding duct smoke detectors.
All detectors must be used with a metal sampling tube, model GS-STxx
Series.
Figure 2: GS-STxx Series Sampling Tubes
H a r d w a r e I n s t a l l a t i o n G u i d e

General Installation Requirements

For proper installation and subsequent operation of each device, pay
special attention to the following recommendations:
-
Upon unpacking the product, inspect the contents of the carton for
shipping damages. Do not install damaged device.
-
Avoid areas where corroding, deteriorating or explosive vapors,
fumes or gases may be present.
-
Ensure that all equipment is installed according to local, regional,
and national regulations.
Personal injury or loss of life may occur if you do not follow a
procedure as specified.
Equipment damage or loss of data may occur if you do not
follow a procedure as specified.
Take reasonable precautions to prevent electrostatic
discharges to the controller when installing, servicing or
operating the controller. Discharge accumulated static
electricity by touching one's hand to a well-grounded object
before working with the controller.

Mounting Instructions

For the correct installation of a duct smoke unit, please refer to the
NFPA 72E (Standard for Automatic Fire Detectors) and NFPA 90A
(Standard for Installation of Air Condition and Ventilation Systems.)
This detector is not intended for open area protection nor should it be
used for early warning detection or replace a regular fire detection
system.

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Summary of Contents for Distech Controls GS-SDD Series

  • Page 1 This document describes the hardware installation procedures for the For proper installation and subsequent operation of each device, pay GS-SDD Series duct smoke detectors. They are the latest innovation special attention to the following recommendations: for early detection of smoke and products of combustion present in air...
  • Page 2 2. In order to prevent stratification, duct smoke units, where possible, must be located a minimum of six duct widths downstream from a The GS-SDD Series will operate on one of the following input voltage source of turbulence (i.e. elbows, deflector plates, filters, dampers, sources: 24VAC, 24VDC, 115VAC and 230VAC.
  • Page 3 Sampling Tube Assembly Mounting Duct Smoke Detector Mount the housing to the duct using 2 #12 x 1/2” sheet metal screws. Sampling tubes are to be ordered separately in one of the 4 standard lengths. Install the intake tube making sure the holes are facing the air flow. Tighten the latch screw to secure the tube.
  • Page 4 certain equipment may have to be shut down. A shutdown will be achieved by interrupting the supply source to that particular piece of equipment when wired as indicated in Figure 6. Figure 6. Wiring Example. Test Procedures Operational Testing To determine the correct operation of the GS-SDD Duct Smoke Detectors, ensure power is connected and the green pilot LED is illuminated.
  • Page 5 Ionization Detector (GS-SDDI) utilizes a radioactive source as its through the sensing tube. means of detection and will detect smoke particles of between .1 and 1 micron in size. Dimensions Figure 7. Dimensions for the GS-SDD Series Duct Smoke Detectors...
  • Page 6 Remote Accessory Wiring Figure 8. Figure 9. Fire Alarm Control Panel Wiring Figure 10.
  • Page 7 Figure 11.
  • Page 8 ©, Distech Controls Inc., 2014. All rights reserved. While all efforts have been made to verify the accuracy of information in this manual, Distech Controls is not responsible for damages or claims arising from the use of this manual. Persons using this manual are assumed to be trained HVAC specialist / installers and are responsible for using the correct wiring procedures and maintaining safe working conditions with fail-safe environments.

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