Notifier AUTOPULSE IQ-318 - Battery Requirements; Calculating the Battery Requirements

54 IQ-318/E/C Installation Manual — P/N 52864:J3 9/29/15
Power Supply Calculations Calculating the Battery Requirements
6.3 Calculating the Battery Requirements
6.3.1 Calculating the Battery Capacity
Use this table to determine the battery capacity needed for the system:
Current (amps) X Time (hours) = AH
Secondary Non-Fire Alarm Current
(from column 3 in Table 6.2)
(see Note 8)
________________
X
Required Secondary Non-Fire Alarm
Standby Time (24 or 60 hours)
________________ = _________AH
APS-6R
Standby Load Current
________________ X
Required Secondary Non-Fire Alarm
Standby Time (24 or 60 hours)
________________ = _________AH
Secondary Fire Alarm Load
(from Table 6.3)
(see Note 8)
________________ X
Required Fire Alarm Standby Time:
(for 5 minutes, enter 0.084; for 15
minutes, enter 0.25)
________________ = _________AH
Sum Column for Total Secondary Amp Hours calculated = _________AH
Multiply by the derating factor x 1.2 (see Note 7) = _________AH
Battery Size – Total Secondary Amp Hours Required = _________AH
1. NFPA 72 Local, Proprietary, and Central Station systems requires 24 hours of standby power followed by
5 minutes in alarm.
2. NFPA 72 Auxiliary and Remote Station Systems require 24 hours of standby power followed by 5 minutes
in alarm.
3. Batteries installed in a system powered by an automatic starting engine generator need to provide at
least 4 hours of standby power.
4. Factory Mutual requires 90 hours of standby for deluge-preaction systems.
5. Emergency voice/alarm communications systems require 2 hours of operation in the alarm condition.
Due to the sporadic nature of voice operation, however, NFPA 72 permits 15 minutes of operation at a
maximum connected load to equal 2 hours of normal use.
6. If the total exceeds 26 AH, the system requires a separate NFS-LBBR, BB-100 or BB-200 battery
enclosure for two larger capacity batteries.
7. The following battery derating factors must be used for Canadian installations using IQ-318C charger:
• For a 26 AH battery, use derating factor of 1.5
• For a 55 AH battery, use derating factor of 1.8
• For a 100 AH battery, use derating factor of 2.5
• For a 200 AH battery, use derating factor of 2.5
8. For 26 AH batteries: maximum standby current cannot exceed 0.65A; maximum alarm current cannot
exceed 6.75A
Table 6.4 Secondary Power Standby and Fire Alarm Load