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FFT-1000 INSTALLATION MANUAL-5409205-REV A 4/21
Main Supply Circuit
The AC terminals are located in the lower right hand portion of the main board. The main board supervises the main
AC power and provides indication that the AC power is absent.
Figure 2. Main Supply Circuit
The terminals are rated at 120 VAC/240 VAC 50/60 Hertz and are marked so accordingly on the board. The earth
ground connection is marked as “G” and is the furthest connection from the line voltage connection.
The AC input power ratings:
Maximum of 675 mA at the nominal 120 VAC rating.
Maximum of 80 mA at the nominal 240 VAC rating.
Rechargeable Battery Circuit
The battery charging circuit is provided in the bottom portion of the board. Terminal connections are provided to
connect wire leads for battery connection. The battery must be a recognized or listed sealed lead acid battery or
equivalent.
The battery charging voltage is approximately 27.3 VDC and the circuit is supervised. The battery circuit is protected
with a non-replaceable 7 amp poly switch located on the main circuit board. The maximum battery charging circuit is
1.0 amp DC.
The battery circuit is rated for 8 to 55 AH batteries and the cabinet will house up to two 18 AH batteries. The
batteries will operate the panel for at least 24 hours and 5 minutes of alarm. To determine the minimum size batteries
for standby and alarm times desired, the installer must complete a battery calculation work sheet to determine the
minimum battery size for a particular application. For reference, the battery calculation work sheet is attached as
Appendix A. Complete standby battery calculations must be completed to ensure adequate battery sizes are provided.
