Simplex 2050 Series User Manual

Figure 19: City card connection with system board
6.7.1.2 Field wiring
For successful wiring, complete the folowing steps:
1. Terminate all wiring at TB1 on the city card.
2. All wiring are supervised for open and GND only. Wiring is not power limited.
3. Check that the conductors test free of all grounds before you connect the city card to the system.
4. If the wiring is routed externally, it requires overvoltage protection at the entrance or the exit of the building. Install the
2081-9044 module inside a UL listed electrical box whereever the wire enters or exits the building.
5. The wiring for reverse polarity is between 20 AWG minimum and 12 AWG maximum.
6. The wiring for local energy is between 18 AWG minimum and 12 AWG maximum.
7. Leave the 2.2K, 1/2 W resistor on an unused terminal.
Note:
1. Statement for reverse polarity/ remote station compatibility.
2. Statement for reverse polarity/ remote station compatibility.
page 29 579-1404 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