UTC Fire and Security FenwalNET 8000-ML - Page 79

Installation
P/N 06-237041-001 2-31 February 2011
Figure 2-24. Wiring Diagram for CLASS-A and CLASS-B Signaling Line Circuits
CLASS B SIGNALING LINE CIRCUIT
IN -
L S
OUT -
IN +
OUT +
To Next
Device
CLASS A SIGNALING LINE CIRCUIT
L S
IN -
OUT -
IN +
OUT +
CLASS A SIGNALING LINE CIRCUIT W/LOOP ISOLATORS
3
7
ISOLATOR
LOOP
3
7
7
3
ZONE 3
ZONE 2
ZONE 1
L
S
IN -
OUT -
IN +
OUT +
RET 24V RET 24V
IN
OUT
ISOLATOR
LOOP
RET 24V RET 24V
IN
OUT
ISOLATOR
LOOP
RET 24V RET 24V
IN
OUT
ISOLATOR
LOOP
RET 24V RET 24V
IN
OUT
SLC
Connector
SLC
Connector
SLC
Connector
Signaling Line Circuit Connectors
(located on MCB and SLC Expansion Card)
M
a
i
n
C
o
n
t
ro
l
l
e
r
B
o
a
r
d
J20
J1
9
on-board SLC
Connectors (2)
Expansion Card
SLC Connector (1)