System Sensor B501 Installation And Maintenance Instructions page 2

Figure 2. Typical wiring diagram for 2-wire loop:
REMOTE ANNUNCIATOR
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Wiring Installation Guidelines (See Figure 2)
All wiring must be installed in compliance with the
National Electrical Code and the local authority having
jurisdiction. Proper wire gauges should be used. The con-
ductors used to connect the smoke detectors to control
panels and accessory devices should be color-coded to pre-
vent wiring mistakes. Improper connections can prevent a
system form responding properly in the event of a fire.
For signal wiring (the wiring between interconnected
detectors and modules), it is recommended that the wiring
be no smaller than 18 gauge (1.0 square mm). Wire sizes
up to 12 gauge wire (2.5 square mm) may be used with the
base. For best system performance, the power (+) and (–)
loop wires should be twisted pair or shielded cable
installed in separate grounded conduit to protect the loop
from extraneous electrical interference. If a cable shield is
provided, the shield connection to and from the base must
be continuous by using wire nuts, crimping, or soldering as
appropriate for a reliable connection.
D550-02-00
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CLASS A OPTIONAL WIRING
CAUTION: Do not loop wire under terminal 1 or 2.
Break wire run to provide supervision of connections.
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Wire Connections are made by simply stripping about
of insulation from the end of the wire (use strip gauge
molded in base), sliding the bare end of the wire under the
clamping plate and tightening the clamping plate screw. Do
not loop the wire under the clamping plate.
The zone wiring of the detector base should be checked
before the detector heads are installed in them. The wiring
should be checked for continuity, polarity in the base, and
dielectric tests.
The base contains a label to write the zone, address, and
type of detector to be installed at that location. This infor-
mation is used to set the address of the detector head that
will later be plugged into the base and to verify the type
required for that location.
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C0133-00
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I56-357-06R