Kidde VM-1 Technical Reference Manual

P/N 3101890-EN • REV 006 • ISS 21JUN18 167
Appendix A
System calculations
Summary
This appendix provides instructions and worksheets for calculating wire lengths and sizing standby batteries.
Content
Network data riser limits 168
Data network specifications 168
Cable properties 168
Calculating a maximum length 169
Calculating maximum wire capacitance per foot 169
Signaling line circuit wire length 170
Determine the maximum allowable branch length 170
Determining the total loop length 176
Notification appliance circuit calculations 177
Introduction 177
What you will need 177
Worksheet method 179
Equation method 180
25 or 70 VRMS NAC wire length 182
Cabinet battery 183
Battery calculations 184
Fiber optic cable worksheet 187

Kidde VM-1 Specifications

General

Brand	Kidde
Model	VM-1
Category	Fire Alarms
Language	English