Secutron MR-2320 Series - Figure 8 Initiating Circuit - Class B or Style B Wiring; Figure 9 Initiating Circuit- Class a or Style D Wiring

22
Field Wiring
6.1.1 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 3.9KΩ EOL resistor or an active EOL module.
Figure 8 Initiating circuit – Class B or Style B Wiring
Figure 9 Initiating circuit– Class A or Style D Wiring
+
-
STYLE D
WIRING
STYLE D
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 STATI ON
SUPERVISORY
4 MORE INITIATING
CIRCUITS NOT SHOWN
DCAC-306 CLASS A
CONVERTER MODULE
FIRE ALARM MAIN BOARD
BLK RED
BLK RED
- DE T1
OUT+
- DET2
OUT+
- D E T 1 RET +- D E T 2 R ET +
+
-
DET 1DET 2
+
-
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.
+
-
STYLE D
WIRING
STYLE D
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
SUPERVISORY
4 MOR E INITIATING
CIRCUITS NOT SHOWN
DCAC-306 CLASS A
CONVERTER MODULE
FIRE ALARM MAIN BOARD
BLK RED
BLK RED
- DET1
OUT+
- DET2
OUT+
- DET1 RET+- DET2 RET+
+
-
DET 1DET 2
MR-2300-A