Fire-Lite MS-25E Addressable Fire Control Panel - Manual (Page 36)

Model MS-25 Installation and Operation Manual
4-6 53688
4.3 Battery Connection
The control panel battery charge capacity is 7.0 to 33 AH or 18 AH for ULC installations. The
main control cabinet can house batteries up to 7 AH, larger capacity batteries can be housed in
a Remote Battery Box (P/N BB-26 or BB-55F). Use 12V batteries of the same AH rating.
Determine the correct AH rating as per your current load calculation (see Section 3.6).
Maximum charging current for batteries is 3.1A @ 27 VDC.
Wire batteries in series to produce a 24-volt equivalent. Do not parallel batteries to increase
the AH rating.
The following steps and diagram explain how to connect the batteries.
1. Connect the black wire from the control panel negative (–) battery terminal to the negative
(–) side of Battery #2.
2. Connect the jumper wire provided (P/N 140694) from the positive (+) side of Battery #2
to the (–) negative side of Battery #1.
3. Connect the red wire from the control panel positive (+) terminal to the positive (+) side of
Battery #1.
Figure 4-4 Battery Connection
Red
Battery Jumper
(P/N 140694)
Shipped With Panel
Black
Sup ervised
Battery 2 Battery 1
12V Battery 12V Battery
Fire-Lite
PN BAT-1270