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9
Overview
This section provides an overview of Trane Air-Fi® wireless systems and the two Trane Air-Fi® wireless
devices.
Air-Fi® Wireless Communications Interface (WCI)
The Air-Fi® Wireless Communications Interface (WCI) enables wireless communications between
system controls, unit controls, and wireless sensors for Trane® control products that use the BACnet®
protocol. The WCI replaces the need for communications wire in all system applications.
The WCI is available in three configurations:
• The universal model is the most common. It installs the same as a wired zone sensor in indoor
applications.
• The outdoor model is housed in an enclosure suitable for outdoor environments. It is usually used
on equipment above the roof deck.
• The flush mount model is used on fan coils, blower coils, and unit ventilators.
Air-Fi® Wireless Communications Sensor (WCS)
The Air-Fi® Wireless Communications Sensor (WCS) is compatible with any Trane controller that uses
a WCI. The WCS provides the same functions as many currently available Trane wired sensors. No
further software or hardware is necessary for site evaluation, installation, or maintenance. Space
temperature is standard on all models. (A service tool cannot be connected to a Trane wireless sensor.)
Six WCS models are available:
• WCS-SB: Base model, has no exposed display or user interface
• WCS-SD: Digital display
• WCS-SCO
2
: CO
2
with occupancy
• WCS-SO: Occupancy
• WCS-SB/R: Refrigeration and freezer monitoring sensor
• WCS-SH: 2% relative humidity sensor module, can be field installed inside either the WCS-SD,
WCS-SB, WCS-SO, WCS-SCO
2
, WCS-SB/R
In most applications, one WCS sensor will be used per WCI acting as a router. However, up to 6 WCS
sensors can be associated to a single equipment controller or BCI/BCI2.
See “Wireless Sensor Setup,” p. 88 for details on how to set this up.
Compatibility with Previous Generation Wireless Zone Products
Our previous line of wireless zone sensors (WZS, WTS, and WDS) are not compatible with the Air-Fi
Wireless Communications Interface (WCI).
The new Air-Fi Wireless Communications Sensor (WCS) are compatible with old WCIs that have
updated firmware.
WCS-SO and WCS-SCO
2
require minimum unit controller firmware as described in “Firmware
Requirements for Devices on an Air-Fi® Network,” p. 12.
Wired Zone Sensors
Wired zone sensors can be used with Air-Fi wireless systems.
Devices Supported by Air-Fi® Wireless Systems
• Tracer® SC/SC+ system controller
• Tracer® UC210 programmable controller
• Tracer® UC400 programmable controller
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