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Installation 15088:J 10/22/99
Figure 3.5-1 CHG-120 Installation into CAB-3 Series(3.5-1a)
and BB-55 (3.5-1b) Cabinets
Connecting the Primary Power Source
With the circuit breaker at the main AC power distribution panel turned off, connect the primary power source to
the corresponding terminal on TB1 of the CHG-120. All connections between the AM2020/AFP1010 and the
CHG-120 must be made in conduit, using 12 AWG (3.25 mm²) wire. Do not route AC wiring in the same conduit as
other control panel circuits. Leave the main circuit breaker off until installation of the entire system is complete. Refer
to Figure 3.5-2.
Connecting the Secondary Power Source
Do not apply AC power or batteries until the system is completely wired and ready for testing. Refer to Wiring
Diagram and Instructions for the CHG-120 Charger in the CHG-120 Charger Manual (Document 50641) for
additional information.
3.5-1a
3.5-1b
Section 3.5 The CHG-120 Remote Battery Charger
The Notifier Remote Battery Charger, CHG-120 is capable of charging 25 to 120 ampere hour batteries. This
unit is required if the MPS-24A must deliver more than 3 amps of current when no fire alarm signal is present.
Batteries up to 120 AH can be housed with the charger in the BB-55 cabinet: Batteries up to 25 AH can be
housed with the charger in cabinets CAB-A3, -B3, -C3, or -D3. Refer to Figure 3.5-1 for installation positions.
The charger can be mounted up to 20 feet (6.096 meters) away from the control panel. To determine the battery
size needed in a particular system, refer to the Non-Fire Alarm Power Requirements.
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