Installation and Maintenance Instructions
Concealed Conduit Mounting
The concealed-conduit mounting method is shown in the
Figure 3 on page 11. This mounting method is recommended
when an existing junction box or handy box will not
accommodate the Model SST3-MV. For this type of mounting
a Federal Signal Model NBL outlet box and an adapter plate
are required. A pair of #6-32 and #8-32 flat-head screws are
included with the concealed mounting kit to secure the plate
to the existing box. Two #10-32 x 1/4 inch round-head screws
are supplied to attach the NBL box to the plate. An insulated
bushing is also supplied to protect electrical leads passing
through the center knockout of the NBL box.
Connecting Power to the Siren
SHOCK HAZARD—To avoid electrical shock hazards, do not
connect wires when power is applied. Failure to follow this
warning could cause serious injury or death.
PROPER WIRE GAUGE—Use only 12 to 18 AWG wire for
power connection. Strip no more than 0.25 inch of wire
insulation from the ends of the power leads.
Choose either AC or DC power operation. Do not try to operate
the siren by connecting both AC and DC power sources at the
same time.
10
Model SST3-MV Siren