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FireLite SLC Wiring Manual — P/N 51309:R3 7/29/2019
Intelligent Detector Bases and Wireless Gateway Wiring an Isolator Base
9.4 Wiring an Isolator Base
The B224BI Isolator Base will isolate its detector from short circuits that occur on the SLC connected at terminals 2 and 3. It will not
isolate its installed detector from short circuits that occur on the SLC connected at terminals 1 and 2. In Class X applications, the loss of
a single detector during a short circuit is not acceptable, and an isolator module must be installed as shown in the figure below.
9.5 Wiring a Relay Base
Figure 9.3 shows typical wiring of a B224RB plug-in relay detector base connected to an SLC.
SLC Out
SLC In
Conduit
I300 Isolator Module
s
lc
-
2
2
4
b
i2
w
ir
e
.
w
m
f
Figure 9.2 Wiring of a B224BI Isolator Base Mounting Plate
Note: The “grid” pattern on the
redesigned B224BI mounting
plate has been removed for
illustration purposes only.
s
lc
-
b
2
2
4
r
b
2
w
ir
e
.
w
m
f
Figure 9.3 Wiring of a B224RB Relay Base Mounting Plate
To next device
on SLC
SLC
Normally Closed
Common
Normally Open
Note: The “grid” pattern on the
redesigned B224RB mounting
plate has been removed for
illustration purposes only.
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