Introduction - Bryant Evolution Connex Control Installation Instructions Manual

2. Introduction

The Evolutionr System consists of several intelligent communicating components
which include the Evolutionr Connex Control (or User Interface), variable speed
furnace or FE fan coil, 2- - stage AC and HP, (including Geothermal units),
multi- - stage AC and HP, variable capacity HP and AC units, and Evolution Connex
System Package units which continually communicate with each other via a
four- - wire connection called the ABCD bus. Commands, operating conditions, and
other data are passed continually between components over the ABCD bus. The
result is a new level of comfort, versatility, and simplicity.
All Evolution System furnaces or fan coils are variable- - speed and multi stage for
maximum flexibility, efficiency, and comfort. They support controlled ventilation,
humidification, dehumidification, and air quality control. Either an Evolution
System (communicating), or a standard single- - stage 24VAC controlled outdoor unit
may be used.
When using conventional single- - stage outdoor units, the Evolution System furnace
or fan coil provides the 24 volt signals needed to control them. When using
multi- - stage conventional outdoor units or heat pumps, an Evolution System
Network Interface Module or "NIM" (P/N SYSTXBBNIM01) may be required to
provide additional control outputs. Also, the NIM allows connection of a Bryant
HRV or ERV without the need for separate wall control.
When using a Bryant HRV or ERV with a zoned system, the Evolution System Zone
board allows connection of a Bryant HRV or ERV without the need for separate
wall control or NIM.
All system components are controlled through the wall mounted Evolution Connex
Control, which replaces the conventional thermostat and provides the homeowner
with a single wall control for all features of the system.
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