Instruction Manual
Table Of Contents
- Table of Contents
- Section 1 About This Manual
- Section 2 System Overview
- Section 3 Installation
- 3.1 Preparing for Installation
- 3.2 Installation Checklist
- 3.3 Mounting a Cabinet
- 3.4 Laying Out Equipment in Cabinet and Chassis
- 3.5 Installing the Control Panel
- 3.5.1 Control Panel Circuit Board & Keypad/Display Unit
- 3.5.2 Using NCA as Primary Display
- 3.5.3 Loop Expander Module
- 3.5.4 Network Control Module
- 3.5.5 Panel Circuit Modules and Other Option Boards
- 3.5.6 Overview
- 3.5.7 Connecting the Control Panel to AC Power
- 3.5.8 Checking AC Power
- 3.5.9 Installing and Connecting the Batteries
- 3.5.10 APS-6R Auxiliary Power Supply Connections
- 3.5.11 External DC Power Output Connections
- 3.5.12 NAC Connections & Releasing Circuits
- 3.5.13 Output Relay Connections
- 3.5.14 Backup-Alarm Switches
- 3.5.15 Installing a Transmitter Module TM-4
- 3.6 UL Power-limited Wiring Requirements
- 3.7 Installing Panel Circuit Modules
- 3.8 Auxiliary Relay Module (ARM-4): Product-Specific Details
- 3.9 Installing Remote Printers and/or CRT
- 3.10 Wiring a Signaling Line Circuit (SLC)
- Section 4 Applications
- Section 5 Testing the System
- Appendix A Power Supply Calculations
- Appendix B Electrical Specifications
- Appendix C Compatible Equipment
- Appendix D Canadian Applications
- Index
Power Supply Calculations Calculating the Battery Requirements
72 NFS-640 Installation Manual P/N 51332:B2 07/27/2004
A.3.2 Calculating the Battery Size
Use this table to choose the battery size, in amp-hours, needed to support the fire alarm system.
Select batteries that meet or exceed the Total Amp-Hours calculated in Table 14 and that are within
the acceptable battery charger range (12-55 AH). Write the amp-hours requirements on the
Protected Premises label.
Battery
Size
Voltage
Rating
Number
Required
Part
Number Backbox Size
12 AH 12 volts two PS-12120 SBB-A4*, SBB-B4*,
SBB-C4*, SBB-D4*
25 AH 12 volts two PS-12250 SBB-A4*, SBB-B4*,
SBB-C4*, SBB-D4*
55 AH 12 volts two PS-12550 NFS-LBB*
* Red version available; add “R” to part number listed here
Table 15 Selecting the Battery Size
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