Kidde VM-1 Technical Reference Manual

Appendix A: System calculations
P/N 3101890-EN • REV 006 • ISS 21JUN18 187
Worksheet D: CO device current load
Instructions: For each NAC/AUX circuit used to provide power to CO devices, enter the total amount of alarm current
required by the devices. Use the alarm currents on the device installation sheet for your calculations.
CO devi
ces Alarm current (mA)
NAC/AUX 1
NAC /AUX 2
NAC /AUX 3
NAC /AUX 4
Total (mA)
Fiber optic cable worksheet
The fiber optic cable worksheet should be used to verify that the light attenuation factors do not exceed the fiber
optic budget for any fiber optic cable segment.
Notes
• The contractor installing the fiber optic cable provides items A, B, and D.
• Fiber optic budget must be greater than the total link loss (F).
Fiber optic cable worksheet
Link Name
A
Cable loss
per unit
distance
[ ] dB/Ft
[ ] dB/Km
[ ] dB/Mi
B
Distance
[ ] Feet
[ ] Km
[ ] Miles
C
Cable Loss
A × B
D
Number of
Splices
E
Contingency
Splices
F
Total Link
Loss (dB)
C+2[D+E]

Kidde VM-1 Specifications

General

Brand	Kidde
Model	VM-1
Category	Fire Alarms
Language	English