Trane TACW Series Installation, Operation And Maintenance Manual page 39

uses individual SP adjustable on the main
condenser valve screen.
– PID direction. Rev – PID acts in Cooling mode; Fwd
– PID acts in Heating mode.
– Valve Action. Dir – maximum PID signal
corresponds to valve fully opened state; Rev –
maximum PID signal corresponds to valve fully
closed state.
– Access: Main Menu > Devices Menu > Cond >
Setup.
Condenser Fan Control
The chiller control system has two options for condenser
fan control as selected from the HMI configuration page –
HMI fan control:
• Disabled – No condensing fan control from chiller
control system. This option is common in water-cooled
projects where condenser cooling is provided by
others.
• ArcticCool Control – Requires T3C Companion
Controller. Preferred control methodology. This option
requires T3C Companion Controller. The T3C
Companion works with the Main Controller; they share
information including Inputs and Outputs. The
Companion cannot work as a stand-alone controller
because it does not have the inputs and outputs to
sustain the functionalities built-in. It is designed as a
companion relying on the main controller.
ARTC-SVX014A-EN
Operating Procedures
The Fan Control option of the T3C Companion
Controller has the following features:
– Four independent circuits
– Optimizes chiller operation based on ambient
temperature, running compressors speed or
wet bulb temperature
– Optimizes chiller efficiency based on chiller load
– Staging control for first two fan banks
– Provides access to Free-Cooling Option (see
"Optional Functionalities," p.
The control page for this option has all the standard
features:
Figure 18. Fan control screen
Depending on SP mode selection Setup page
settings layout will look slightly different.
53).
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