FX-350 Series Installation and Operation Manual
25
Field Wiring
Main Fire Alarm Board Field Wiring
Wire devices to the addressable loop as shown in Figure 9 for Class B (Style 4) or Figure 10 for Class A (Style 6).
Refer to the Table 3 for loop wire gauges.
Wire devices to addressable loops 2 and 3, if available, in the same
manner.
Figure 10: Addressable Loop Wiring - Class B or Style 4
Table 3: Loop Wiring Table
Loop Isolators
To limit the number of addressable devices compromised by a short on the addressable loop, isolators (MIX-100X,
100XH, or 100XB) may be used to isolate the affect of the short circuit. If the impact of a short circuit must be limited
to only one device, an isolating base must be used for each detector. A maximum of twenty devices can be
connected between isolators, or between the panel and the first isolator, as long as the maximum in-rush current for
the devices on one segment of the loop does not exceed 20mA. Refer to the installation instructions for
addressable devices for additional details.
UNSHIELDED
TWISTED
PAIR WIRE
GAUGE
LOOP TOTAL (OUT AND
IN) WIRE RUN
AWG
FEET
METRES
12
20,000
6098
14
15,942
4859
16
9960
3036
18
6265
1910
CLASS B
WIRING
ION SMOKE
DETECTOR
PHOTO SMOKE
DETECTOR
HEAT DETECTOR
PULL STATION
Lo
op
A
+
-
+
-
B
OUTPUT MODULE
This Loop Wiring Table is for reference only and should not be
used without a detailed loop calculation.
Maximum Loop Current: 350 mA
Maximum Loop Resistance: 35 subtract 0.2 Ohms per isolator.
Maximum Loop Capacitance: 0.5 uF
Maximum Number of Isolators is 40.
Содержание FX-350 Series
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