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F220 Series Detectors with F220-B6/C/E/R Bases Install the Bases | en 13
Bosch Security Systems, Inc. Installation Manual 4998138694 -04 | 2007.01
3.4 Wire F220-B6 Two-wire Bases
The F220-B6 is a 12 VDC or 24 VDC base for two-wire
conventional loops. Refer to Figure 3.2 for wiring details.
3.5 Wire F220-B6C/E/R Four-wire Bases
1. Initiating device circuit
(IDC) input (positive [+] in
on terminal b2, out from
terminal b1; negative [-] in
and out from terminal
a1/a2) from the control
panel or from a previous
two-wire base and output
to the next two-wire base.
2. Place the EOL resistor
across base’s power
terminals (b2 and a1/a2)
of the last base on the
loop. Refer to the control
panel installation
instructions for resistor
specifications.
Fig. 3.2 Wiring F220-B6 Two-wire Bases
b1
b2
3
5
4
2
1
ca1/a2
+
-
F220-B6
1
2
1
+
-
!
CAUTION! Do not connect relays to inductive or
capacitive loads. Use with resistive loads only.
4998138694Er7.book Page 13 Thursday, March 1, 2007 8:42 AM