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7.0 Field wiring
7.1 Main Fire Alarm Board Field Wiring
Wire devices to the terminals as shown in the figures that follow. Refer to the Wiring Tables for
wire gauges and to Appendix C: Specifications for specifications.
7.1.1 Initiating Circuit Wiring
Wiring diagrams for the initiating circuits are shown below. The panel supports Style B wiring
for the initiating circuits and Style D wiring for the indicating circuits. The initiating circuits are
supervised by a 3.9 k
Ω end-of-line resistor or for power saving an active-end-of-line.
Figure 16 Initiating circuit – Class B or Style B wiring
Caution: Do not exceed power supply ratings.
Note: Depending on configuration, end-of-line resistors on initiating circuits must be all
3.9 k
Ω or all active end-of-line resistors.
+
-
STYLE B
WIRING
STYLE B
WIRING
INITIATING
CIRCUIT #1
INITIATING
CIRCUIT #2
INITIATING
CIRCUIT - 1
ALARM ZONE
INITIATING
CIRCUIT - 2
SUPERVISORY
ZONE
ION SMOKE
DETECTOR
PHOTO SMOKE
DETECTOR
HEAT
DETECTOR
PULL STATION
3.9K 1/2 WATT ELR
SUPERVISORY
FIRE ALARM MAIN BOARD
+
-
DET 1DET 2
NOTE: ACTIVE END OF LINE
RESISTORS MAY BE USED, BUT
THEY MUST BE USED ON ALL THE
INITIATING CIRCUITS.
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