B501BH Terminals
No. Function
1External Supply Positive (+)
2External Supply Negative
3Negative
4Positive (+) Comm. Line In and Out
5Sounder Base Interconnect
Terminals 3 and 4 are used for the communication circuit.
Mounting
Mount the B501BH directly to an electrical box, using the mounting kit, supplied (see Figure 2).
The sounder base is
NOTE: A maximum space of 1⁄8 inch from the outside edge of the electrical box to the inside edge of the dry- wall or ceiling tile is allowable.
Wiring Guidelines
All wiring must be installed in compliance with the National Electrical Code and the local codes having juris- diction and must not be of such length or wire size which would cause the base to operate outside of its published specifications. The conductors used to connect smoke sen- sors to control panels and accessory devices should be color coded to reduce the likelihood of wiring errors. Improper connections can prevent a system from respond- ing properly in the event of a fire.
For signal wiring (the wiring between interconnected sen- sors or modules), it is recommended that the wire be no smaller than 18 gauge (1.0 square mm). Wire sizes up to 12 gauge (2.5 square mm) may be used with the base. For best system performance, the power (+ and
Make wire connections by stripping about 3⁄8" of insulation from the end of the wire. Then, slide the bare end of the wire under the clamping plate, and tighten the clamping plate screw. Do NOT loop the wire under the clamping plate (See Figure 3).
The zone wiring of the sensor base should be checked before the sensor heads are installed. Check the wiring for continuity and polarity in the base.
See the individual sensor manual for the maximum sensor installation temperature.
Figure 1. Terminal layout:
Figure 2. Mounting:
Figure 3:
MOUNT B501BH
TO ELECTRICAL BOX
4 INCH SQUARE BOX
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