Overview External Battery Charger
AFP-200 PN 15511:H2 10/14/2002 191
Appendix N External Battery Charger
N.1 Overview
The CHG-120 is capable of charging 25 AH to 120 AH batteries. You must install an
external battery charger if the power supply must deliver more than 3.0 A of current
when no fire alarm signal is present. To use the CHG-120 with the AFP-200, you must
cut jumper JP2 on the main CPU board (see Figure 3 on page 17).
Refer to the CHG-120 Instruction Manual (PN 50641) for detailed information on
CHG-120 specifications, connections, operation, and configuration.
N.2 Installation Requirements
Options for mounting batteries are as follows:
1. Cut jumper JP2 on the main circuit board.
2. Mount the CHG-120 in an external battery box
3. Locate the CHG-120 within 20 feet (6.096 m) of the control panel.
The CHG-120 battery charger is designed to charge lead-acid batteries that provide
emergency standby power for a Fire Alarm Control Panel (FACP). Two 12-volt
batteries are always used in series to supply 24 VDC nominal.
N.3 Mounting the CHG-120
N.3.1 Mounting the Charger into a CAB-X3 Series Cabinet
You can mount a charger into the bottom row of a CAB-X3 Series Cabinet, as long as
the charger is within 20 feet (6.096 m) of the load. Typically, a charger mounts into the
lower right corner of the CAB-X3—beside the power supply (Figure 169, position 2).
If using an additional CAB-X3, you can mount the charger in the lower left corner
(Figure 169, position 2).
Figure 169 shows the two mounting positions of a charger into a CAB-X3.
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