SPS NAC Field Wiring Guidelines, Continued

Class B (string) NAC Wiring

To connect the SPS to appliances using Class B wiring, read the following instructions and refer to the figure below.

1.Route wire from the B+, B- outputs on TB2 of the SPS to the appropriate inputs on a peripheral notification appliance. Use NAC1, NAC2, or NAC3, as required.

2.Route wire from the first appliance to the next one. “T” tapping is not allowed since the spur will not be supervised. Repeat for each appliance.

3.Route wire from the last appliance to the supplied EOLR or a 4081-9008 EOL Harness (10 K Ohm, ½ W; brown/black/orange).

4.Repeat steps 1 through 3 for each NAC output you want to use.

5.Leave the 378-030 EOL Resistor (10 K Ohm, ½ W; brown/black/orange) on each unused circuit. The circuit must connect “B+” to “B-” terminals.

6.If the appliance/device to be used does not have an integral diode, a blocking diode must be fitted between the incoming +ve wire and the +ve terminal of the device with the diode’s cathode (stripe) connected to the device.

The illustration below shows Class B wiring.

RED

Important: Conductors

must test freeRED of all grounds.

0.75 mm2 to 4 mm2

RED

Ferrite bead

 

 

 

required for CE

 

 

 

compliance. Use

 

3

P1

 

2

kit 4100-5129.

 

1

 

EOL Harness 10K 1/2W (133-894)

BLKRED

TYPICAL

APPLIANCE

BLKRED

TYPICAL

APPLIANCE

BLK

Leave the EOL Resistor (10 K Ohm, ½ W; brown/black/orange) on unused B+/B- terminals

B+ B- A+ A- B+ B- A+ A- B+ B- A+ A-

NAC1 NAC2 NAC3

LED1 LED2 LED3

Figure 5-3. Class B (string) Wiring

5-5

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Tyco 4100U-S1 installation manual Important Conductors, Class B string Wiring

4100U-S1 specifications

The Tyco 4100U-S1 is a sophisticated and robust fire alarm control panel known for its reliability and advanced features, catering primarily to commercial and industrial applications. This system represents the latest in fire safety technology, providing comprehensive protection for a wide range of environments.

One of the main features of the Tyco 4100U-S1 is its ability to support advanced signaling protocols. This capability allows for seamless communication with a variety of initiating devices and notification appliances, ensuring a rapid response to potential fire incidents. The control panel can accommodate a significant number of devices connected through its extensive loop options, enhancing its flexibility in larger installations.

The Tyco 4100U-S1 employs Intelligent Addressable Technology, which simplifies the installation process and reduces wiring complexity. Each device on the loop can communicate its status without needing additional wiring, making it easier to troubleshoot and maintain. This feature not only enhances the system's efficiency but also helps to minimize installation costs.

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