B501BH Terminals

No. Function

1External Supply Positive (+)

2External Supply Negative (–)

3Negative (–) Comm. Line In and Out

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 1.1-inches deep. Electrical boxes must be 4-inches square by at least 11⁄2 inches deep - 21⁄8 inches is recommended.

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 –) wires and the communication circuit wires should be twisted pair or shielded cable installed in separate grounded conduit to protect the communication loop from electrical interfer- ence.

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

A78-1993-02

D650-03-00

2

I56-491-06R

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System Sensor specifications B501BH Terminals, No. Function, Mounting, Wiring Guidelines
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B501BH specifications

The System Sensor B501BH is a high-performance, innovative heat detector designed for commercial and industrial applications. This model stands out due to its advanced features and reliable technologies, making it an essential component for fire safety systems.

One of the primary features of the B501BH is its ability to detect heat in a variety of environments. The device operates primarily on the rate-of-rise principle, which means it can identify rapid increases in temperature, a common indicator of a fire. It also includes a fixed-temperature option, enhancing its versatility. This dual function ensures that the B501BH can respond effectively to different fire scenarios, providing an additional layer of safety.

The design of the B501BH focuses on user-friendliness and ease of installation. It is equipped with a lightweight and compact form factor, allowing it to be seamlessly integrated into existing fire alarm systems. Additionally, the unit features a robust mounting design, which can be installed in various settings, whether on ceilings or walls. The B501BH is compatible with multiple panel systems, ensuring interoperability and ease of integration with existing fire safety measures.

Another significant attribute of the B501BH is its exceptional durability. Designed to withstand harsh conditions, it is ideal for use in environments such as warehouses, manufacturing plants, and commercial spaces. This resilience is complemented by its capability to resist dust and moisture, increasing its reliability in various operating conditions.

The B501BH heat detector incorporates advanced algorithms for enhanced sensitivity and quicker response times. This precision improves fire detection and minimizes the risk of false alarms, allowing for more efficient fire response measures. The unit's LED indicator provides clear visual feedback, signaling its operational status, which aids in maintenance and monitoring.

In summary, the System Sensor B501BH is a state-of-the-art heat detector that combines advanced detection technologies with robust and user-friendly design. Its dual detection capabilities, compatibility with existing systems, and environmental resilience make it a top choice for those seeking reliable fire safety solutions. By ensuring the protection of properties and lives, the B501BH continues to play a vital role in fire prevention and safety strategies.
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