Simplex 4100U Application Guide

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Most of the systems discussed so far have been non-dedicated systems. Even in a building where
the primary smoke control system is non-dedicated, special zones or functions may exist that
require a “dedicated” system. The most common example of a dedicated system is a dedicated
smoke control system for a stairtower.
A “stairtower” is a stairwell with a ventilation system that is isolated from the main building.
The only connection between the building and the stairtower are fire-rated doors on each floor.
Since the building occupants should use the stairtower to leave during an evacuation, keeping the
stairtower smoke-free is vital.
A stairtower has its own dedicated system that pressurizes the stairtower to keep smoke out.
This dedicated system can take several forms, from a fan mounted in the roof of the stairtower, to
a duct system that delivers air to each level.
You must pressurize a stairtower enough to keep smoke out. However, if the pressure in the
stairtower is too great, then opening the doors leading into the stairtower can be difficult.
(See the figure below.)
Figure 1-4. The Effects of Too Much or Too Little Pressure
Designing a Dedicated Smoke Control System
Introduction
About Stairtowers
Too Much Pressure
Too Little Pressure
Building
Building
Stairtower
Stairtower

Simplex 4100U Specifications

General

Control Panel Type	Addressable Fire Alarm Control Panel
Display	LCD
Power Supply	120/240 VAC, 50/60 Hz
Max Signaling Line Circuits (SLC)	2
Operating Temperature	0°C to 49°C (32°F to 120°F)
Humidity Range	10% to 93% non-condensing
Network Capability	Yes
Communication Protocol	RS-232, RS-485
Battery Backup	24 VDC
NAC Outputs	4
Signaling Line Circuits (SLCs)	2
Power Supply Current	3.0 A
Max Notification Appliance Circuits (NAC)	4
Max Releasing Circuits	4
Max Relay Circuits	4
Communication Ports	RS-232, RS-485