30
Installation and Maintenance Instructions
Model G-SND Global Series Sounder
UL Fire Alarm Certifications
The audible sounder models that are powered using 24 Vdc input
are Listed by Underwriters Laboratories (UL) for use in fire alarm
applications. The 120 Vac and 230 Vac inputs have not been
evaluated. These models have the following nomenclature:
G-SND-MV-D, G-SND-MV-D, G-SND-MV-T, and G-SND-024-E.
They have an electrical rating of 515 mA maximum at 24 regulated
voltage Vdc (16 Vdc to 33 Vdc).
NOTE
:
UL only evaluated this product to the stated operational voltage
range. It was not evaluated to 80% to 110%. of the voltage range
.
The sounder is factory-set with the tone selector switch set to the
No. 12 setting. This is a constant 1 kHz tone. This is the only tone
setting that has been evaluated for fire alarm applications. At this tone
the sounder has a sound pressure level of 79.0 dB. See Figure 9 for
the dispersion characteristics.
The units can be mounted on a wall or ceiling and have no
mounting orientation restriction. For specific installation and wiring
requirements, refer to local codes such as the National Code (NFPA70)
and the National Fire Alarm and Signaling Code (NFPA72).
Figure 9 Dispersion characteristics for audible signal devices
AUDIBLE SIGNAL DEVICE
3
m
3
m
20
º
–6
dB
–6
dB
–3
dB
–3
dB
99
dB
50
º
