ION SYST0101CW Installation Instructions Manual page 5

1. Safety Considerations
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion,
fire, electrical shock, or other conditions which may cause death, personal injury or property
damage. Consult a qualified installer, service agency or your distributor or branch for
information or assistance. The qualified installer or agency must use factory-authorized kits or
accessories when modifying this HVAC system. Refer to the individual instructions packaged
with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Have a fire
extinguisher available. Read these instructions thoroughly and follow all warnings and cautions
included in literature and attached to the unit. Consult local building codes and the current
edition of the National Electrical Code (NEC) NFPA 70. In Canada, refer to the current editions
of the Canadian Electrical Code CSA C22.1.
Recognize safety information. When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand the signal words DANGER,
WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER
identifies the most serious hazards, which will result in severe personal injury or death.
WARNING signifies hazards, which could result in personal injury or death. CAUTION is used
to identify unsafe practices, which may result in minor personal injury or product and property
damage. NOTE is used to highlight suggestions which will result in enhanced installation,
reliability, or operation.
2. Introduction
The Ion™ System consists of several intelligent communicating components which include the
Ion System Control (or User Interface), communicating variable speed furnace or FCM4 fan
coil, single stage AC and HP, 2-stage AC and HP, and multi-stage AC and HP. The Ion System
Control continually communicates with each ICP communicating HVAC unit via a four-wire
connection called the communications bus. Commands, operating conditions, and other data are
passed continually between components over the communications bus.The result is a new level
of comfort, versatility, and simplicity.
NOTE: The full features of the Ion System are only available with specific ICP systems. See
the Ion System Control Product Data for compatible units and more information.
All ICP communicating furnaces or fan coils are variable-speed and multi-stage for maximum
flexibility, efficiency, and comfort. They support controlled humidification, dehumidification,
and air quality control. Either an ICP communicating, or a standard single-stage 24VAC
controlled outdoor unit may be used.
When using conventional single-stage outdoor units, the ICP communicating furnace or fan coil
provides the 24 volt signals needed to control them. When using multi-stage conventional
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