Filter
Top Products
Contents
1
2
3
CPG #2561255 FIRELARM 2500 Operating Manual
3-4
Table 3-1: Current Requirements.
Module/Device Standby mA Alarm mA
2500 with LCD display
2500 without LCD display
CAM (Class A module)
RALCD (Remote Annunciator)
ZDACT (Digital Alarm Communicator)
MBM module
PAM-1 or PAM-2 Relay
170
105
0
95
30
30
15
310*
250
25
115
50
15 (250 momentary)
15
*Includes one zone short circuit current.
Table 3-2: Secondary Power Requirements.
NFPA-72 National Fire Alarm Code Standby Time Alarm Time
Local Systems
Auxiliary Systems
Remote Station Systems
Central Station Systems
24 hrs.
60 hrs.
60 hrs.
24 hrs.
5 min.
5 min.
5 min.
5 min.
Table 3-3: Calculation Table.
1 2 3 4 5 6
Module/Device Qty. Standby mA Per Unit Total Standby
Current
Alarm mA Per Unit Total Alarm
Current
Total mA Total mA
Convert to A X 0.001 Convert to A X 0.001
Total A Total A
Multiply by hours
from table 2
X AH for 5 mins. ÷ 12
Total Standby AH Total Alarm AH
+ Total Standby AH
Total AH
Efficiency Factor ÷ 0.85
Required AH
Select a battery such that the battery’s amp hour rating meets or exceeds the
calculated amp hour requirement (44AH maximum).