Indicating Circuit Wiring; Figure 15 Indicating Circuit - Class B Or Style Y Wiring; Figure 16 Indicating Circuit -Class A Or Style Z Wiring - Mircom FR-320 Series Installation And Operation Manual

7.3

Indicating Circuit Wiring

The FR-320 Series Fire Alarm supports Class B or Style Y and Class A Style Z wiring for its
indicating circuits. Each circuit is supervised by a 3.9KΩ EOL resistor or active EOL module.
Each indicating circuit provides up to 1.7 A, 5 A maximum total if no auxiliaries are used.
FR-320 Panel
INDICATING
CIRCUIT #1
INDICATING
CIRCUIT #2
BELL
Figure 15
FR-320 Panel
INDICATING
CIRCUIT #1
INDICATING
CIRCUIT #2
BELL
Figure 16
30
STROBE HORN
Indicating circuit – Class B or Style Y wiring
+
-
+
-
OCAC-302 CLASS A
CONVERTER MODULE
STROBE HORN
Indicating circuit –Class A or Style Z wiring
3.9K 1/2 WATT ELR
Field Wiring
STYLE Y
WIRING
INDICATING
CIRCUIT - 1
STYLE Y
WIRING
INDICATING
CIRCUIT - 2
STYLE Y
WIRING
INDICATING
CIRCUIT 1
STYLE Y
WIRING
INDICATING
CIRCUIT 2