Simplex 2050 Series User Manual

6.1.1.1 Class A wiring
To wire the loop using Class A wiring, complete the following steps:
1. Select Class A wiring style from the PC tool.
2. Route the wire from the loop circuit primary terminals B+ B- on the TB3 of the MX loop to the corresponding inputs of the first
device.
3. Route the wiring from the first device to the next as in or out, repeat this step for each device. See Figure 9.
4. Route the wire from the last appliance to the A+ A- terminals of the control unit's system board.
5. Do not T-Tap the wiring.
Figure 9: Class A wiring
Callout Description
A Isolators
B Compatible addressable devices (Detector, Input modules, Output modules)
page 18 579-1404 Rev A
2050 and 2250 Foundation Series Fire Alarm Control Units Installation Guide

Simplex 2050 Series Specifications

General

Brand	Simplex
Model	2050 Series
Category	Control Unit
Language	English