Federal Signal G-SND Instructions page 3

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 fixture combinations, it is necessary to replace E-box end caps
before mounting the product. If you are creating combination fixtures, refer to instruction manual 25500259 for specific
instructions and details.
A note about combination fixtures: 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 flat surface using the four 8.5 mm mounting holes. Use installer-supplied fasteners suitable for
the surface to which the device will be mounted.
105.9 mm
(4.17 in
Federal Signal signaling.fedsig.com
Figure 2 Side view of Ex d sounder
190.6 mm
(7.50 in)
2X M20 GLAND ENTRIES
Figure 3 Front view of Ex d sounder
Ø133.8 mm (5.27 in)
105.9 mm
)
(4.17 in
132.6 mm
(5.22 in)
34.9 mm
(1.38 in)
4X COUNTER-BORED
HOLES TO FIT M8
SOCKET-HEAD
CAP SCREWS
3