Figure 14: Bus style wiring
Figure 15: T-Tap style wiring
Callout Description
RAM Remote annunciator module
MSB Main system board
A 100 ohm, 1/2 W line matching resistor
Table 7: Maximum distance supported for respective AWG for annunciator quantity
Maximum
Annunciator QTY
Maximum Distance
(Ft) w/ 22AWG
Maximum Distance
(Ft) w/ 20AWG
Maximum Distance
(Ft) w/ 18AWG
Maximum Distance
(Ft) w/ 16AWG
Maximum Distance
(Ft) w/ 14AWG
8 310 493 783 1244 1980
7 354 563 895 1421 2263
6 413 657 1044 1658 2640
5 496 788 1253 1990 3168
4 620 985 1566 2488 3960
3 826 1314 2088 3317 4000
2 1239 1970 3132 4000 4000
1 2478 3941 4000 4000 4000
page 25 579-1404 Rev A
2050 and 2250 Foundation Series Fire Alarm Control Units Installation Guide
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