Trane XT300C - User Manual

The Trane XT300C Deluxe Programmable Heat-Cool Thermostat is an electronic control device designed for 24 Vac single-stage heating and cooling systems. It is powered by the heating system and offers automatic system changeover (Heat-Off-Cool-Auto) and fan selection (On-Auto). System and fan selections are conveniently made via the keyboard.

Function Description

The thermostat provides precise electronic control over your heating and cooling system. It allows for programmable scheduling, enabling users to set specific temperatures and times for different periods of the day (Wake, Leave, Return, Sleep). The default program settings include a 7-day schedule with specific temperature setpoints for both heating and cooling, and an automatic fan setting.

Key functions include:

Setting Current Day and Time: Users can easily adjust the current day and time, including daylight saving adjustments.
Programming Times and Setpoints: The thermostat supports programming for heating and cooling schedules, allowing for energy savings and comfort optimization.
Temporary Override: Programmed temperatures can be temporarily overridden for immediate comfort adjustments.
Display Present Setting: The display shows current settings, outdoor temperature (with an optional accessory), and other relevant information.
Installer Setup: This feature allows for customization of the thermostat for specific systems, including Comfort-R™ control activation, Fahrenheit vs. Centigrade temperature display, outdoor temperature display (requires outdoor sensor installation), and system changeover.
Self-Test: A built-in self-test function helps verify the thermostat's operation, checking heating, cooling, fan equipment, Comfort-R terminals, keyboard operation, and device information.
System Operation Selection: Users can choose between Heat (thermostat controls heating), Off (both heating and cooling are off), Cool (thermostat controls cooling), and Auto (thermostat automatically changes between heating and cooling based on indoor temperature).
Fan Operation Selection: The fan can be set to operate continuously (On) or only with the equipment (Auto). Fan settings can be configured individually for each program period, while the system selection applies to all program periods.

Usage Features

The XT300C thermostat is designed for user-friendly interaction with a clear LCD display and a dedicated keypad. The keys are used for various functions:

Information (i) Key: Displays present settings and outdoor temperature.
Increase/Decrease Keys (▲/▼): Adjust time settings, scroll through installer setup options, and change temperature settings.
Run Program Key: Returns to normal operations and exits installer setup.
Set Current Day/Time Key: Sets the current day and time.
Wake, Leave, Return, Sleep Keys: Set times and setpoints for programmed periods.
Hold Temp Key: Enters indefinite or timed hold mode.
Day Key: Sets the current or program day.
Heat/Cool Settings Key: Changes between heating and cooling setpoints.
Filter Key: Selects filter expiration in number of days.
System Key: Selects system operation (Heat, Cool, Off, Auto).
Fan Key: Selects fan operation (On, Auto).
Daylight Time Key: Changes between daylight savings and standard time.
Copy Key: Copies one programmed day to another.

The thermostat also features Adaptive Intelligent Recovery™ control, which starts heating or cooling early to ensure the setpoint is reached by the start of a program period. This feature can be configured during installer setup.

Maintenance Features

The XT300C thermostat incorporates features that aid in maintenance and troubleshooting:

Filter Expiration Reminder: The thermostat can be programmed to remind users when it's time to change the filter, with the expiration period set in number of days.
Installer Self-Test: This diagnostic tool allows service technicians to quickly check the functionality of various components, including heating, cooling, and fan equipment, as well as keyboard operation. It helps in identifying issues efficiently.
Device Information Self-Test: Provides access to crucial device information such as production date code, software identification code, software revision number, and model identification number, which can be valuable for troubleshooting and support.
Troubleshooting Guide: The manual includes a comprehensive troubleshooting guide that lists common symptoms, possible causes, and recommended actions, enabling users or technicians to resolve issues like display problems, incorrect temperature readings, or system not turning on.
Recycling Notice: The device emphasizes responsible disposal, particularly if it replaces an older thermostat containing mercury, encouraging users to contact local waste management authorities for proper recycling instructions.

The thermostat is designed to be installed in an area with good air circulation, away from drafts, direct sunlight, or heat sources, to ensure accurate temperature readings and optimal performance.