72 RTAA-SVX01A-EN
Controls Interface
The exclusive Trane Adaptive Control logic with the Clear Language Display is
comprised of a system of individual modules located in the control panel. The
system consists of six different microprocessor-based components. The
processors are:
• Clear Language Display - 1U6.
• Chiller Module - 1U1.
• Communication and Setpoint Reset Option Module - 1U2.
• Expansion Valve Module - 1U3.
• Compressor Module (one per compressor) - 1U4, 1U5.
• Remote Display Buffer Option Module - 1U7.
• LCI-C Option Module - 1U8.
The Clear Language Display has various functions that allow the operator to
read unit information and adjust setpoints. The following is a list of the
available functions:
• Operating and Diagnostic descriptions.
• Settings of local setpoints and adjustments.
• Actual controlling setpoints.
• Specific temperatures.
• Specific Pressures.
• Enable/Disable status of features and options.
• Selection status of SI units or English units.
• Under/Over voltage protection.
• Display of% line voltage.
• Alarm/Running/Maximum Capacity contacts.
• Display Starts and Hours.
Clear Language Display Keypad Overview
Local operator interface with the system is accomplished using the 16 keys
on the front of the Clear Language Display panel. The readout screen is a two
line, 40 character liquid crystal with a backlight. The backlight allows the
operator to read the display in low-light conditions. The depression of any key
will activate the backlight. The backlight will stay activated for 10 minutes
after the last key is pressed. At 10 F or below the backlight will stay activated
continuously.
The keys are grouped on the keyboard by the following functions (refer to
Figure 35):
• Select Report Group.
• Select Settings Group.
• Selection Keys.
• Stop & Auto Keys.
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