EXP-SD-SFC-120V-V1
Larson Electronics, LLC
Phone: (800) 369-6671
Fax: (903) 498-3364
www.larsonelectronics.com
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POWER SUPPLY REQUIREMENTS
Calculate the total detection system power consumption rate in watts from cold
start-up. Select a power supply with adequate capability
for the calculated load. Ensure
that the selected power supply provides sufficient regulated and
filtered output power for
the entire system. If a back-up power system is required, a float-type battery charging
system is recommended. If an existing source of power is being used, verify that system
requirements are met.
TRANSPORT COVER
The Transport Cover (see Figure 4) keeps dust
and particles out of the smoke chamber
that may enter during transport, handling, or installation. It should remain fastened on the
detector through the installation process.
IMPORTANT
Remove the cover
only
after installation is complete and prior to powering
the detector for the first time.
TRANSPORT
COVER
MOUNTING LOCATION OPTIONS
Ceiling Mount
The EXP-SD-SFC-120V-V1 is intended for surface mounting. It is normally mounted on the
ceiling no less than six inches from a side wall (See Figure 5). The exact location of the
detector must be determined by an evaluation based on engineering judgement, or if
possible, by field tests.
NOTE: MAKE CERTAIN THAT THE LEO
IS POSITIONED WHERE VISIBLE.
Wall Mount
The
EXP-SD-SFC-120V-V1
can also be mounted on a side wall (see Figure 6). The exact
location of the detector must be determined by an evaluation based on supplemented
engineering judgement, or if
possible, by field tests.
IMPORTANT
Whenever possible, select
a
mounting orientation where the
LED
is
visible to personnel within the area.
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m/�
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1
LEO__J
NOTE:
MAKE CERTAIN THAT THE LED
'-
IS POSmONEO WHERE VISIBLE.
SIDE
WALL
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MOUNT THE DETECTOR
Using three No. 8 flat head screws (or equivalent)
placed through the counter
bored holes in the detector flange, secure the detector junction box to the surface
location.
WIRING CABLE REQUIREMENTS
Always use proper temperature rated cabling
type and diameter for input
power as well as
output signal wiring. 14 to 18 AWG shielded
stranded
copper wire is recommended.
The field wiring terminal connections are certified
for a single wire in size from 0.2
to 2.5 mm2 (or
two conductors with same cross section 0.2 to
0. 75 mm2). The
screws must be tightened down with a torque 0.4 to 0.5 N•m. The metal housing
must be electrically connected to earth ground.
A minimum of 12 Vdc must be present at the
EXP-SD-SFC-120V-V1
to ensure
proper operation. The maximum
cable length from power source to
EXP-SD-
SFC-120V-V1
is
2000 feet. When the
EXP-SD-SFC-120V-V1
Smoke Detector is
mounted remotely using an STB termination box, maximum cable length from
EXP-
SD-SFC-120V-V1
to STB is 500 feet.
WARNING
For field connections, use wires/cables that are rated at
20°C
greater than the maximum ambient temperature.
NOTE :
In applications where the wiringg is installed in conduit, dedicated conduit is recommended. Avoid low
frequency, high voltage, and non-signaling conductors to prevent nuisance EM/ problems.
