Johnson Controls IFC-1010 Technical Manual page 49

Table 7: Secondary Power Standby and Fire Alarm Load
Type of Load X Required Time
Secondary Required Secondary
Non-Fire Alarm
Non-Fire Alarm
X
Standby Time
Load (from 3rd
column
(24 or 60 hours)
Table 5)
Required Fire Alarm
Secondary Fire
Time (for 5 minutes,
Alarm Load
X
enter 0.084)
(from Table 6)
(for 15 minutes,
enter 0.25)
Sum Column for Total Secondary Ampere
Hours (AH) Calculated
Multiply by the Derating Factor x 1.2
Total Secondary Ampere Hours Required
Table 8 sums the non-fire alarm and alarm loads to arrive at the battery
size in Ampere-Hours (AH), required to support the IFC-1010/2020.
The MPS-24A or MPS-24AE can charge batteries up to 60 AH in size.
Select batteries that meet or exceed the total AH calculated:
Table 8: Battery Size Requirements
Battery Voltage
Size Rating
6 volts
9.5 AH
12 AH 12 volts
12 volts
25 AH
12 volts
60 AH
Note: NFPA 72 Local and Proprietary Fire Alarm Systems require
24 hours of secondary non-fire alarm power followed by 5 minutes
in alarm. NFPA 72 Auxiliary and Remote Station Fire Alarm
Systems require 60 hours of secondary non-fire alarm power
followed by 5 minutes in alarm. NFPA 72 Voice Evacuation
Systems require 15 minutes of alarm time.
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Number Model
Required Number
Four PS-695
Two PS-12120
Two PS-12250
Two PS-12600
Hardware Installation—Installing the IFC-1010/2020
Result
Non-Fire Alarm Secondary
Standby Ampere Hours
Secondary Fire Alarm
Ampere Hour Requirement
Cabinet Size
CAB-A3, B3, C3, D3
(IFC-1010 only)
CAB-A3, B3, C3, D3
(IFC-1010 only)
CAB-A3, B3, C3, D3
BB-55 Cabinet (Batteries
only)
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