Trane 824 Comfort Control Operation Manual

The Trane 824 Comfort Control (XL824) is a programmable thermostat with a color touch-screen interface, designed for Trane/American Standard HVAC systems. It supports 1-2 stage heating/cooling, integrates with Nexia™ smart home for remote control via app/PC/tablet, and manages up to 230 Z-Wave devices. Features include scheduling, 1-Touch Presets, and energy-efficient PI control. Below are the key specifications and operation instructions.

1. Key Specifications 2. Operation Instructions 2.1. Initial Setup 2.2. Home Screen Navigation 2.3. Scheduling and Presets 2.4. Settings Screen 2.5. Advanced Features 2.6. Troubleshooting 3. Installation Instructions 3.1. Pre-Installation 3.2. Wiring Diagrams 3.3. Configuration Options 4. Calculation Tool

Key Specifications

Type: Programmable color touch-screen thermostat with Nexia™ integration
Compatibility:
- Trane/American Standard systems: 1-2 stage heat/cool, heat pumps, dual fuel, variable speed blowers
- Accessories: Humidifiers, dehumidifiers, ventilation, Z-Wave devices (up to 230)
- Network: Wi-Fi, Ethernet; remote access via Nexia app
Power:
- 24 VAC, 7 VA; operating temp -40°F to 175°F, 5-95% RH non-condensing
Dimensions: 5-1/2” W x 3-3/8” H x 1” D
Temperature Range: Heating 40°F-90°F, Cooling 50°F-99°F; ±1°F accuracy
Features:
- PI control, duty cycling, 1-Touch Presets (Home/Away/Sleep), scheduling (up to 4 periods/day)
- Dehumidification (up to 30% airflow reduction), humidification, security PIN lock
- Guided setup, diagnostics, weather integration
Compliance: FCC Part 15, IC Canada RSS

Operation Instructions

Initial Setup

1. User Setup Wizard: Powers on and guides through screen brightness, backlight, screen saver, color themes, and schedule settings.
2. Network Connection: Choose Wi-Fi (manual/WPS/hidden) or Ethernet; enter password if needed.
3. Nexia Registration: Visit www.mynexia.com, create account, then Menu > Nexia > Register for remote access and Z-Wave.

Home Screen Navigation

1. Views: Toggle Simple (basic temp/mode) or Classic (full control panel) via Settings > Home View Options.
2. Control: Use arrows for setpoints; shows current temp, mode, time.
3. Widgets: Add up to 2 (e.g., weather, humidity) via Settings > Screen > Screen Layout.

Scheduling and Presets

1. Scheduling: Menu > Schedules; group days, adjust/add/delete periods (up to 4/day) with times/temps.
2. 1-Touch Presets: Home/Away/Sleep buttons for quick changes; configure via Settings > 1-Touch Presets.
3. Overrides: Adjust via arrows; red wavy lines indicate savings mode.

Settings Screen

1. Access: Menu > Settings.
2. Options: 1-Touch Presets, Screen (brightness/theme), Time/Date, Schedules, Access Restrictions (PIN lock).
3. Security: Default PIN 1234; limits access to ± adjustments.

Advanced Features

1. Nexia™: Remote climate/Z-Wave control; add devices via Menu > Nexia > Add/Remove.
2. Z-Wave: Up to 230 devices; use app or control for management, reset/copy networks.
3. Optimization: 90-min learning mode; delay by holding screen.
4. Diagnostics: Test blower/stages via installer menu.

Troubleshooting

Network Issues: Reconnect Wi-Fi/Ethernet; check router.
Schedule Errors: Ensure sequential periods; reset via wizard.
Z-Wave Problems: Reset network, re-add devices.
General: Contact dealer; check FCC compliance for interference.

Installation Instructions

Warning: Professional installation required. Disconnect power before wiring. Max 18 wires, 2.5 ohms resistance.

Pre-Installation

Mount in living space, 54" above floor, away from drafts/sun.
Tools: Level, drill; optional Ethernet CAT5.
Compatibility check: Trane systems preferred; adjust jumpers for others.

Wiring Diagrams

Schematics for heat/cool, heat pump, dual fuel (e.g., Y1/Y2 compressor, O/B valve, AUX1/2 accessories).

Terminal	Connection
R/Rc/Rh	24V Power
Y1/Y2	Compressor Stages
W1/W2	Heat Stages/Aux
O/B	Reversing Valve
G	Fan
C	Common
AUX1/AUX2	Accessories (Humidifier, etc.)

Note: Remove jumpers like RC/RH, BK for non-Trane; diagrams show line connections between units.

Configuration Options

Power up; enter Guided System Configuration (equipment type, cycles 2-6/hr, accessories, comfort/dehum, airflow delays, lockouts).
Groups 1-7 for advanced: e.g., compressor lockout 55°F, aux heat 45°F.
Save and test modes (blower, stages).

Calculation Tool

Estimate daily energy savings from using Away preset vs. Home (assumes 0.5 kWh/hr per °F difference; 30 days/month).