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APPENDIX "B" - BATTERY CALCULATIONS (SELECTION GUIDE)
Use the form below to determine the required batteries.
IMPORTANT NOTICE
The main AC branch circuit connection for Fire Alarm Control Unit must provide a dedicated continuous power without provision of any
disconnect devices. Use #12 AWG wire with 600-volt insulation and proper over-current circuit protection that complies with the local codes.
POWER REQUIREMENTS (ALL CURRENTS ARE IN AMPERES)
Model Number
Description
Qty
STANDBY
TOTAL
ALARM
TOTAL
STANDBY
ALARM
FA-101U
Fire Alarm , 1 Det, 1 Sig
X
0.066
=
0.125
=
FA-102U
Fire Alarm, 2 Det, 1 Sig
X
0.076
=
0.135
=
FA-1025U
Fire Alarm, 5 Det, 2 Sig
X
0.114
=
0.200
=
RTI-1
Remote Trouble Indicator
X
0.035
=
0.035
=
2-Wire Smoke Detectors
X
'
0.0001
=
* 0.090
= 0.090
4-Wire Smoke Detectors
X
=
=
Signal Load (bells, horns, strobes, and etc.)
=
Total currents (Add above currents)
STANDBY
(A)
(B)
Total Current Requirement:
ALARM (B)______ Amps.
Battery Capacity Requirement:
(
[STANDBY (A) ______ ] X [(24 or 60 Hours) ___ ]
)
+
(
[ALARM (B) ______ ] X [
%
Alarm in Hr.] _____
)
= (C) ______AH
Battery Selection:
Multiply (C) by 1.20 to derate battery.
Batteries BA-104 (4.0AH) and BA-1065(6.5AH) fit into the backboxes ; all larger batteries such as BA-110(10AH) and the BA-117(17AH)
require an external battery box.
* Assuming three Initiating Circuits in alarm.
%
Use 0.084 for five minutes of alarm or 0.5 for thirty minutes of alarm as a multiplier figure.
'
Using the MIR-425/U 2-wire smoke detector. See Appendix "A", for other available smoke detectors .
Summary of Contents for FA-1025U
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Page 9: ...5 FIGURE 1 BACKBOX FLUSH TRIM MOUNTING DETAILS...
Page 10: ...6 FIGURE 2 CIRCUIT BOARD LAYOUT...
Page 11: ...7 FIGURE 3 DETECTION AND SIGNAL WIRING INSTRUCTION...
Page 12: ...8 FIGURE 4 WIRING TABLE FOR DETECTION ZONE...
Page 13: ...9 FIGURE 5 WIRING TABLE FOR BELLS AND HORNS...
Page 14: ...10 FIGURE 6 ALARM TROUBLE RELAY CONTACTS AND REMOTE ANNUNCIATION WIRING INSTRUCTION...
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