Wiring Instructions

NOTE: External supply shown in normal standby configu- ration in Figure 4.

The wiring diagram for a typical 2-wire intelligent system is shown in Figure 4 (the monitor module is supervising the external supply).

Testing

NOTE: Before testing, notify the proper authorities that the smoke sensor system is undergoing mainte- nance and, therefore, will be temporarily out of service. Disable the system undergoing mainte- nance to prevent unwanted alarms.

Figure 4. Wiring diagram:

Horn Grouping

UL has approved horn grouping for up to six B501BH base with horn units. When wired as a group, any detector in the group that has its LED’s latched on by the panel will cause other B501BH units in the group to sound. Grouping is accomplished by wiring the grouped devices together using terminal 5, Sounder Base Interconnect, as shown in

Sensors and bases must be tested after installation and as an integral part of periodic maintenance. Test the B501BH as follows:

1.Reverse the polarity of the external 24VDC supply. All B501BH bases on the loop should sound in approximate- ly 10 seconds.

2.Latch the sensor LED on from the control panel. That unit’s B501BH should sound in approximately 10 seconds.

NOTES:

1.There is approximately a 10 second delay built into the B501BH before sounding. This delay is present whether the control signal comes from the sensor or from the external power supply polarity being reversed.

2.During automatic testing cycles. the horn may sound if the associated sensor is left in the test mode with LEDs latched on for more than 4 seconds. Therefore, it is nec- essary to complete testing of each sensor within this 4- second limit to prevent the horn from sounding.

the diagram. Since the grouping is not supervised, the groups can only be used for supplementary signaling.

NOTE: Grouping horns together can only be used as a sup- plementary evacuation system. It is not acceptable to group horns for primary alarm signaling.

LISTEDCOMPATIBLE CONTROLPANEL

 

CLASS A OPTIONAL WIRING

 

 

4 5

4

5

 

 

 

OPTIONAL SOUNDER INTERCONNECT*

 

 

 

(+) COMM.

 

 

 

U.L.

3

2 1

3

2 1

 

(–) COMM.

 

 

 

EXTERNAL SUPPLY24V

(–) POWER

CLASS A OPTIONAL WIRING

 

(+) POWER

*GROUPING OF UP TO 6 MODEL B501BHT TEMPORAL TONE SOUNDER BASES.

 

 

INTELLIGENT

 

 

MONITOR

 

 

MODULE

 

(+)

2

 

 

(–)

1 6

7

4 5

 

 

U.L.

3

2 1

LISTED

 

EOL

 

 

 

RESISTOR

47K

U.L.

LISTED

EOL

RELAY

24V

A78-1990-01

D650-03-00

3

I56-491-06R

Page 2 Page 4
Page 3
Image 3
System Sensor B501BH specifications Wiring Instructions, Testing, Horn Grouping
Page 2 Page 4

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.
Top Page Image Contents