Trane XT302C Thermostat Operation Manual

The Trane XT302C is a deluxe programmable heat-cool thermostat for 24 VAC single-stage heating and cooling systems. It features automatic changeover, 7-day programming with 4 periods (Wake, Leave, Return, Sleep), keyboard controls for time, temperature, day, and programs, on-auto fan selection, temporary overrides, recovery mode, and installer setup options including compressor protection. Below are the key specifications and operation instructions.

Key Specifications

• Power: 24 VAC, 50/60 Hz; Class II; requires common wire
• Operating Conditions: 32°F to 110°F (0°C to 43°C); 5% to 90% RH non-condensing
• Setpoint Ranges:
  • Heating: 55°F to 85°F (13°C to 29°C)
  • Cooling: 65°F to 99°F (18°C to 37°C)
• Temperature Range (Display): 32°F to 99°F
• Dimensions: Wallplate for horizontal mounting; mounting holes 5/16 in.
• Compatibility: Single-stage heat/cool systems; gas/electric/oil; multistage with automatic changeover
• Features:
  • 7-day/24-hour/constant setpoint programming; 4 periods; Adaptive Intelligent Recovery
  • Auto changeover; On/Auto fan; Filter indication; Outdoor temp display (optional)
  • Compressor protection (5-20 min off timer); Self-test; Non-volatile memory
• Compliance: National/state/local codes; NEC Class II

Operation Instructions

Initial Setup

1. Power On: Display activates; if flashing, press any key.
2. Set Day/Time: Press Set Current Day/Time; adjust day with Day key; time with Time keys; enable DST if needed.
3. Set Mode/Fan: Press System for Heat/Off/Cool/Auto; Fan for On/Auto.
4. Program Schedule: Press Program; set periods/times/setpoints; copy days if 7-day mode.

Home Screen Navigation

1. Display: Day/time, period, room temp, mode icons, filter status, low battery.
2. Controls: Increase/Decrease for temp; System/Fan keys; Hold Temp for overrides; Program for schedule.
3. Indicators: Flame/snowflake for active; Temporary for overrides; Filter flashing.

Operating Modes

1. Heat: Controls heating when below setpoint.
2. Cool: Controls cooling when above setpoint (after delay).
3. Auto: Automatic changeover with deadband.
4. Off: No operation.
5. Fan: On (continuous) or Auto (with calls); programmable per period.

Settings Screen

1. Access: Use Program key for schedule; Filter for timer.
2. Schedule: 7-day (unique days), 24-hour (daily repeat), or constant setpoint; 4 periods.
3. Filter Timer: Set 0-360 days; reset when changed.
4. Overrides: Temporary (until next period), indefinite hold, or vacation (1-255 days).

Advanced Features

1. Programming: Preprogrammed defaults; customize times/setpoints/fan; copy/clear periods.
2. Adaptive Recovery: Learns to start early for exact setpoint at period start.
3. Information Key: Cycles outdoor temp, setpoints, filter status.
4. Daylight Savings: Auto-adjust clock.
5. Comfort-R: Balances temp/humidity.

Troubleshooting

• No Display: Check power/mounting; replace batteries if low.
  
• No Heat/Cool: Verify mode/setpoint; check power/wiring; raise/lower temp.
  
• Filter Flashing: Replace filter; reset timer.
  
• Setpoint Limits: Adjust within 55-85°F heat/65-99°F cool.
  
• Persistent: Contact Trane dealer (1-877-880-3381).

Installation Instructions

Warning: Qualified personnel only. Disconnect power. Follow lockout/tagout. Comply with codes.

Pre-Installation

• Location: 5 ft above floor, interior wall; good circulation; avoid drafts/sun/heat/pipes.
  
• Tools: Screwdriver, level, wire strippers.
  
• Wire: 18-22 AWG; label wires; common required.

Wiring Diagrams

Terminal Designations (Single-Stage Heat/Cool):

Terminal	Description
R	24V Hot (Power)
W	Heat Relay
Y	Cool Compressor
G	Fan
C	Common (required)

Notes: Multistage support; use heat relay if needed; overload protection required. See diagrams for electric heat (set fan to electric).

Configuration Options

1. Mount wallplate; connect wires per diagram.
   
2. Power up; enter Installer Setup (hold Increase/Decrease + Time): Set system type (0=conventional/1=heat pump), changeover (0=cool-heat/1=heat-cool), fan (0=gas/1=electric), recovery (0=conventional/1=adaptive), min on time (5-20 min), etc.
   
3. Factory defaults suitable for most; test heat/cool/fan via self-test.
   
4. Set user time/program.
   
5. Verify operation.

Calculation Tool

Estimate monthly energy savings from programming (assumes 4°F setback saving 0.15 kWh per hour unoccupied; 30 days/month).