Federal Signal Corporation G-SND User manual

Model G-SND
Sounder for Use in Hazardous
Locations
Limited Warranty: This product’s limited warranty can be found at www.fedsig.com/SSG-Warranty.
WARNING - Failure to follow all safety precautions and instructions may result in property damage, serious injury, or
death to you or others.
MESSAGES TO INSTALLERS AND USERS People’s lives depend on your safe installation of our products. It is
important to follow all instructions shipped with the products. This device is to be installed by a trained electrician who
is thoroughly familiar with the National Electric Code and will follow the NEC guidelines as well as local codes.
The selection of the mounting location for the device, its controls and routing of the wiring is to be accomplished
under the direction of the Facilities Engineer and the Safety Engineer. Listed below are some other important safety
instructions and precautions you should follow.
• Read and understand instructions before installing or operating equipment.
• Do not connect this unit to the system when power is on.
• All effective warning speakers produce loud sounds, which may cause, in certain situations, permanent hearing
loss. You should take appropriate precautions, such as wearing hearing protection.
• After installation, test the sound system to ensure proper operation.
• All effective warning speakers produce loud sounds, which may cause, in certain situations, permanent hearing
loss. The device should be installed far enough away from potential listeners to limit their exposure while still
maintaining its effectiveness.
• The OSHA Code of Federal Regulations 1910.95 Noise Standard provides guidelines which may be used regarding
permissible noise exposure levels.
• Show these instructions to your Safety Engineer and then le them in a safe place and refer to them when
maintaining and/or reinstalling the unit.
• After installation and completion of the initial system test, a program of periodic testing of this device must be
established. Refer to NFPA 72G, local Fire Codes and the authority having jurisdiction for this information.
• Consult the authority having jurisdiction in your area regarding the proper use and installation of this product.
SHOCK HAZARD - To avoid electrical shock hazards, do not connect wires when power is applied.
Certication
Certicate Nos. ATEX Cert No.: Baseefa15ATEX0155X
IECEx Cert No.: IECEx BAS 15.0104X
ATEX coding: II 2 G D
Protection Ex db IIB T5 Gb or Ex db e IIB T5 Gb
Ex tb IIIC T100°C Db IP66 (Tamb= -55°C to + 49°C)
Ex db IIC T4 Gb or Ex db e IIC T4 Gb
Ex tb IIIC T135°C Db IP66 (Tamb= -55°C to + 70°C)
Standards EN60079-0: 2012 +A11:2013, EN60079-1: 2014,
EN60079-7: 2007, EN60079-31: 2014, IEC60079-0: 6th Ed.,
IEC 60079-1:7th Ed., IEC 60079-7: 4th Ed.,
IEC 60079-31:2nd Ed.
255000187 Rev B8 0122

2Model G-SND Sounder
Federal Signal signaling.fedsig.com
Specic Conditions of Use
• The Modular Audible Device enclosure incorporates a sinter and the volume is greater than 100 cm3; therefore, use
of the Modular Audible Device in a carbon disulphide gas atmosphere is not permitted.
• The Modular Audible Device has external non-metallic surfaces that may provide an electrostatic charging hazard.
See the manufacturer's instructions for further information.
• The Modular Audible Device has metallic components in the non-metallic walls of the enclosure that can store
electrical charge and therefore may provide a potential electrostatic discharge. The metallic brass inserts have a
capacitance of 24 pF. See the manufacturer's instructions for further information.
cULus Zone Certications
This equipment is for use in Class I, Zone 1 and Zone 21 hazardous (classied) locations. It has been investigated with
reference to risks to life and property and for conformity to the installation and use in provisions of Articles 505 and 506
of NFPA 70 (NEC).
These models use protections:
• Class I, Zone 1, AEx db IIC T4 Gb or AEx db eb IIC T4 Gb
• Zone 21, AEx tb IIIC T135°C Db IP66 (Tamb= -55°C to+70°C)
• Ex db IIC T4 Gb or Ex db eb IIC T4 Gb
• Ex tb IIIC T135°C Db IP66 (Tamb= -55°C to+70°C)
UL Fire Alarm Certications
See page 13.
Unpacking the Sounder
After unpacking the sounder, examine it for damage that may have occurred in transit. If it has been damaged, do not
attempt to install or operate it. File a claim immediately with the carrier, stating the extent of the damage. Carefully
check all envelopes, shipping labels, and tags before removing or discarding them. If any parts are missing, please call
Federal Signal Customer Support at [phone] or [phone].
Creating Combination Fixtures in the Field
The Federal Signal Global Series Ex de products can be connected together in the eld using interchangeable E-box end
caps and a proprietary coupling system. See Figure 1.
Figure 1 Sounder and sounder combination xture

3
Installation and Maintenance Instructions
Federal Signal signaling.fedsig.com
The proprietary coupling system allows for simple and cost-effective wiring from product to product, often eliminating
the need for expensive Ex wiring practices and Ex rated glands. The E-box is available only when factory installed on an
Ex d unit or when used as an E-box spacer adjoining an existing E-box. Please refer to the accessories listed in Table 3
on page 12 for available options. When creating certain xture combinations, it is necessary to replace E-box end caps
before mounting the product. If you are creating combination xtures, refer to instruction manual 25500259 for specic
instructions and details.
A note about combination xtures: If the product is Exdb marked only, it is for use in gas atmospheres. If the product is
Ex db e marked, it uses the increased safety terminal enclosures and is only for gas atmospheres. If the product is Ex tb
marked, it is for installation in dust atmospheres.
Mounting the G-SND Sounder
ATTACH THE SOUNDER SECURELY - To prevent injury, this apparatus must be securely attached to the mounting surface
in accordance with the installation instructions. Use installer-supplied fasteners suitable for the mounting surface.
The mounting method and the installer-supplied mounting hardware depend on which of the two G-SND models you are
installing.
Mounting the Surface-Mount Ex d Sounder
Mount the sounder to a at surface using the four 8.5 mm mounting holes. Use installer-supplied fasteners suitable for
the surface to which the device will be mounted.
Figure 2 Side view of Ex d sounder
132.6 mm
(5.22 in)
34.9 mm
(1.38 in)
2X M20 GLAND ENTRIES
190.6 mm
(7.50 in)
Figure 3 Front view of Ex d sounder
105.9 mm
(4.17 in
Ø133.8 mm (5.27 in)
4X COUNTER-BORED
HOLES TO FIT M8
SOCKET-HEAD
CAP SCREWS
105.9 mm
(4.17 in)

4Model G-SND Sounder
Federal Signal signaling.fedsig.com
Mounting the Ex d e Surface-Mount Sounder
Mount the sounder to a at surface using the six 8.5 mm mounting holes. Use installer-supplied fasteners suitable for
the surface to which the device will be mounted.
Figure 4 Front view of Ex d e surface mount
2X Ø8.5 mm
103.2 mm
(4.06 in)
122.6 mm
(4.83 in)
3X M20
GLAND
ENTRIES
4X COUNTER-BORED
HOLES TO FIT M8
SOCKET-HEAD
CAP SCREWS
105.9 mm
(4.17 in)
23.2 mm
(0.91 in)
Figure 5 Side view of Ex d e surface mount
272.0 mm
(10.71 in)
190.6 mm
(7.50 in)
SEE ACCESSORIES FOR
REPLACEABLE E-BOX END CAPS
3X M20 GLAND ENTRIES

5
Installation and Maintenance Instructions
Federal Signal signaling.fedsig.com
Safety Messages for Wiring
When installing and operating ameproof electrical equipment, the relevant national regulations for installation and
operation (e.g., EN60079-14, IEC Wiring Regulations and NEC/CEC) must be observed.
• To avoid electrical shock hazards, do not connect wires when power is applied. Failure to observe this warning may
lead to serious injury or death.
• To maintain the ameproof integrity of the enclosure, DO NOT damage the cover or threads while disassembling or
reassembling the unit.
• Painting and surface nishes, other than those applied by Federal Signal Corporation, are not permitted.
• Cable termination should be in accordance with specications applying to the application. Federal Signal
recommends that all cables and cores be fully identied.
• Ensure that only the correct equipment-certied glands are used and that the assembly is shrouded and correctly
earthed. Gland entries are M20-1.5 6H with an option for the M25 entry on the end of the increased safety box
models. See Table 4 on page 13 for choosing the correct cable entry devices for Equipment in Potentially
Explosive Atmospheres.
• Because of space limitations, ensure that the cable cores within the unit are not too slack.
• In all countries, the wiring must comply with all national and local codes and standards.
• Ensure that all nuts, bolts, and xings are secure.
Preparing to Wire the Ex d Flameproof Models
SHOCK HAZARD - To avoid electrical shock hazards, do not connect wires when power is applied. Failure to observe this
warning may lead to serious injury or death.
CIRCUIT BOARD DAMAGE - The DC sounders are polarity sensitive and MAY BE DAMAGED by incorrect electrical
hookup. When connecting the DC sounder to the voltage supply lines, POLARITY MUST BE OBSERVED. In addition,
damage will result if the voltage rating of the particular model is exceeded by more than 10 percent.
This section has wiring instructions for the ameproof models G-SND 24 Vdc, 120 Vac, 220-240 Vac.
Ex d units are supplied with an eleven-position PCB mounted screw terminal block. The maximum wire gauge is 4 mm
(12 AWG). The wire must be rated 85°C or higher. Use only stranded cable to terminate the sounder. The cross-sectional
area of the primary earth (ground) must equal the cross-sectional area of the phase conductor.
Cable termination for these models should be in accordance with specications applying to the application. It is
recommended that all cables and cores be fully identied. Use the appropriate cable gland for the application. Gland
entry threads are M20-1.5 x 6H.
Tools needed:
• 1.5 mm A/F hexagon key
• 2 mm at-tip screwdriver
• No. 1 Phillips screwdriver
• Wire stripper