Trane ComfortLink II XL850 Thermostat Operation Manual

The Trane ComfortLink II XL850 is an easy-to-use programmable smart thermostat with a color touch-screen interface, serving as a central hub for smart home devices via Trane Home integration. It supports Wi-Fi/Ethernet connectivity, Z-Wave for up to 230 devices, and remote control via app. Compatible with Trane/American Standard HVAC systems, it features scheduling, 1-Touch Presets, and Smart Optimization for energy efficiency. Below are the key specifications and operation instructions.

Key Specifications

• Type: Programmable color touch-screen smart thermostat with Trane Home integration
• Compatibility:
  • Trane/American Standard HVAC systems; up to 8 thermostats per account (models 824, 850, 1050)
  • Z-Wave Plus for up to 230 devices; Honeywell EnviraCOM 2.0 protocol
  • Wi-Fi/Ethernet; Trane Home app (iOS/Android) for remote control
• Power:
  • 24 VAC; requires high-speed internet for full features
• Temperature Range: Adjustable heating/cooling setpoints; accuracy not specified
• Dimensions: Compact wall-mount design
• Features:
  • Simple/Classic views; up to 4 periods/day scheduling; 1-Touch Presets (Home/Away/Sleep)
  • Smart Optimization (blower tests); weather integration (forecasts, alerts)
  • Ventilation, humidity control, air cleaner mode; notifications via text/email
  • Access restrictions; automatic software updates
• Compliance: FCC ID: XVR-CONT8505; IC ID: 6178D-CONT8505; ENERGY STAR

Operation Instructions

Initial Setup

1. User Setup Wizard: Access via MENU > SETTINGS > USER SETUP WIZARD; cannot cancel once started.
2. Screen Settings: Adjust brightness, backlight, screen saver, color themes.
3. Schedule: Enable/disable; guided tool for auto-creation or set 1-Touch Presets.
4. Network: Wi-Fi (manual/WPS/hidden) or Ethernet; enter password/ZIP code.
5. Trane Home: Register at www.tranehome.com or app; generate PIN for pairing.

Home Screen Navigation

1. Simple View: Notifications, date/time, setpoints, mode (Auto/Heat/Cool/Off/Em Heat), fan (Auto/On/Circulate), Presets, arrows for adjustments.
2. Classic View: Toggle via SETTINGS > SCREEN > HOME VIEW OPTIONS; includes air cleaner toggle.
3. Widgets: Up to 2 (e.g., weather) via SCREEN LAYOUT.
4. Hold: Adjust setpoint > HOLD PERM for permanent; resume schedule to cancel.

Scheduling and Presets

1. Enable Scheduling: MENU > SCHEDULES & PRESETS > USE SCHEDULES (ON).
2. Custom Schedule: Up to 4 periods/day; group days (All/Mo-Fr/Sa-Su); adjust time/setpoints.
3. Add/Delete Periods: Select ADD/DELETE; min 30 min duration, max 4 periods.
4. 1-Touch Presets: Disable scheduling; set Home/Away/Sleep setpoints via menu.

Settings Screen

1. Access: MENU > SETTINGS.
2. System: Reminders, scale, deadband, calibration (±5°F), outdoor temp source.
3. Screen: Brightness, backlight, theme, access restrictions (PIN).
4. Network: Wi-Fi setup, diagnostics; Date/Time manual if disconnected.
5. Other: Restart, software upgrade, User Setup Wizard re-run.

Advanced Features

1. Overrides: Hold Until (set end time) or Hold Perm; cancel via menu.
2. Trane Home: Remote control, weather, notifications; Z-Wave add/remove (4-min learn mode).
3. Smart Optimization: Enable/disable; 90-min blower test ~18 hrs post-power-up.
4. Z-Wave: Add/remove devices; advanced reset/copy network via app/menu.

Troubleshooting

• Enrollment Issues: Check www.tranehome.com troubleshooting.
  
• Network: Reorient for interference; use Hidden Network if not listed.
  
• Optimization Delay: Hold screen 5s to postpone 18 hrs.
  
• Z-Wave: Factory reset clears all; re-add devices.
  
• Calibration: Allow 1 hr acclimation; ±5°F adjustment.

Installation Instructions

Warning: Professional installation required. Refer to installer guide for wiring; Ethernet jack on back for wired setup.

Pre-Installation

• Mount on interior wall, 54-60" above floor, away from drafts/sun.
• Prepare CAT5 for Ethernet; Wi-Fi router nearby.
• High-speed internet required.

Wiring Diagrams

Compatible with EnviraCOM 2.0; standard low-voltage terminals (professional wiring needed):

Terminal	Connection
R/Rc/Rh	24V Power
W1/W2	Heat Stages/Aux
Y1/Y2	Compressor Stages
O/B	Reversing Valve
G	Fan
C	Common

Note: Jumper Rc/Rh if single transformer; see full installer manual.

Configuration Options

1. Power up; run User Setup Wizard.
   
2. Set system type, enable scheduling/Presets.
   
3. Network: Wi-Fi/Ethernet; register Trane Home.
   
4. Calibrate temp; test modes.

Calculation Tool

Estimate monthly energy savings from 1-Touch Away preset (assumes 0.5 kWh/hr per °F difference; 30 days/month).