Kidde VM-1 Technical Reference Manual

Appendix A: System calculations
184 P/N 3101890-EN • REV 006 • ISS 21JUN18
Battery calculations
Battery capacity worksheet
Instructions: Enter the standby and alarm currents from the other worksheets, and then calculate the size of standby batteries
you need based on your operating time requirements.
Standby
current (mA)
Alarm
current (mA)
CO alarm
current (mA)
Total control panel current (from
Worksheet A)
0
Total NAC current (from Worksheet B) 0 0
Total AUX current (from Worksheet C) 0
Total CO alarm current (from Worksheet
D)
0 0
Smoke power [1] 0
Total current
Operating time required × h × min × 12 h
÷ 60 +12 h
+ + = mAh
× 1.2 [2]
mAh
÷ 1,000
Battery capacity Ah
[1] A maximum of fifteen GSA-UM or GSA-MAB modules per signaling line circuit can be configured to support two-wire
smoke detectors (personality codes 13, 14, 20, and 21). For standby current, enter 2.0 mA for each smoke power circuit used.
For alarm current, enter 17.0 mA for each smoke power circuit used.
[2] Required 20% safety margin.

Kidde VM-1 Specifications

General

Brand	Kidde
Model	VM-1
Category	Fire Alarms
Language	English