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2. Introduction
The Infinity® System consists of several intelligent communicating
components which include the Infinity System 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 Infinity 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 Infinity 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 Infinity System (communicating), or a standard
single-stage 24VAC controlled outdoor unit may be used.
When using conventional single-stage outdoor units, the Infinity 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
Infinity System Network Interface Module or “NIM” (P/N
SYSTXCCNIM01) may be required to provide additional control
outputs. Also, the NIM with a translator board (SYSTXXXTRB01)
allows connection of a Carrier HRV or ERV without the need for separate
wall control.
When using a Carrier HRV or ERV with a zoned system, the Infinity
System Zone board with a translator board (SYSTXXXTRB01) allows
connection of a Carrier HRV or ERV without the need for separate wall
control or NIM.
All system components are controlled through the wall mounted Infinity
System Control, which replaces the conventional thermostat and
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