American Standard Thermostat Gold 824 Manual

The American Standard Thermostat Gold 824 is a programmable digital thermostat designed for precise temperature control of heating and cooling systems. It features a backlit display, 7-day programming flexibility, automatic changeover between heating and cooling modes, filter change reminder, system status indicators, and compatibility with most single-stage HVAC systems. Below are key sections for safety, features, installation, programming, operation, and troubleshooting.

1. Features at a Glance 2. Installation & Wiring 3. First-Time Setup 4. Specifications 5. Controls and Display 6. Programming Schedule 7. Operating Modes 8. Advanced Settings 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Backlit LCD display, Mode buttons (Heat/Cool/Auto/Off), Fan control (Auto/On), Up/Down temperature adjustment buttons, Hold button, Program button, Menu/Set button.

Feature	Description
7-Day Programmable	Set different schedules for each day of the week
Automatic Changeover	Automatically switches between heating and cooling based on setpoint
Backlit Display	Easy-to-read screen in low light conditions
Filter Change Reminder	Alerts when it's time to replace the HVAC filter
System Status Indicators	Icons for Heat, Cool, Fan On, Hold, etc.
Temperature Display	Shows current room temperature and setpoint
Battery Backup	Uses AA batteries to retain program during power outage
Compatibility	Works with most single-stage gas, oil, electric, and heat pump systems
Hold Function	Temporarily overrides programmed schedule
Keypad Lock	Prevents unauthorized changes to settings

Installation & Wiring

Turn off power to HVAC system at circuit breaker before installation.

Remove old thermostat: Label wires according to terminal markings before disconnecting.
Mount new baseplate: Level and secure to wall using provided screws.
Connect wires: Insert labeled wires into corresponding terminals (R, W, Y, G, C, etc.).
Attach thermostat: Align and snap onto baseplate.
Install batteries: Insert two AA batteries for backup power.
Restore power: Turn circuit breaker back on.

WARNING! Incorrect wiring can damage thermostat or HVAC system. If unsure, consult a qualified HVAC technician.

First-Time Setup

After installation and power restoration, configure initial settings.

Set mode: Press MODE to select HEAT, COOL, AUTO, or OFF.
Set temperature: Use Up/Down arrows to adjust setpoint.
Set fan: Press FAN to select AUTO (fan runs with system) or ON (continuous fan).
Set time and day: Press MENU/SET, navigate to CLOCK, set current time and day.
Program schedule: Press PROGRAM to set up to 4 periods per day (Wake, Leave, Return, Sleep).

CAUTION! Allow system to complete start-up cycle before making further adjustments.

Specifications

Power Source: 24VAC from HVAC system; two AA backup batteries.
Temperature Range: Heating: 40°F to 90°F (4°C to 32°C); Cooling: 50°F to 99°F (10°C to 37°C).
Display: Backlit LCD with Fahrenheit or Celsius selectable.
Accuracy: ±1°F (±0.5°C).
Compatibility: Single-stage heating and cooling systems (conventional and heat pump).
Terminals: R, Rc, W, Y, G, C, O/B, Aux/E.
Operating Temp: 32°F to 122°F (0°C to 50°C).
Dimensions: Standard wall plate size.

Controls and Display

Front Panel: LCD display showing time, temperature, mode, and indicators. Buttons: MODE, FAN, Up/Down arrows, HOLD, PROGRAM, MENU/SET.

Display Icons: Flame (Heating), Snowflake (Cooling), Fan (Fan On), Clock (Schedule Active), Hold (Temporary Override), Battery (Low Battery).

Menu Settings: Clock, Schedule, Filter Timer, Temperature Calibration, Keypad Lock, Fahrenheit/Celsius, System Test.

Programming Schedule

Default schedule: 4 periods per day (Wake, Leave, Return, Sleep).

Press PROGRAM button.
Use arrows to select day (MON, TUE, etc., or ALL for same schedule every day).
Select period (1-Wake, 2-Leave, 3-Return, 4-Sleep).
Set time and temperature for each period.
Press MENU/SET to save and move to next period.
Repeat for all days as needed.

Tip: Press HOLD to temporarily override schedule; press RUN to resume programmed schedule.

Operating Modes

Select mode using MODE button.

HEAT: Controls heating system only.
COOL: Controls cooling system only.
AUTO: Automatically switches between heating and cooling based on setpoints.
OFF: System is off; fan can still be set to ON for circulation.
Fan Settings: AUTO (fan runs only when system is active) or ON (continuous fan operation).

WARNING! In AUTO mode, ensure heating and cooling setpoints have at least a 3-degree separation to prevent short cycling.

Advanced Settings

Access via MENU/SET button.

Filter Timer: Set reminder interval (30-365 days) for filter changes; reset after replacing filter.

Temperature Calibration: Adjust displayed temperature ±5°F if needed.

Keypad Lock: Enable to prevent unauthorized changes (default code 0000).

System Test: Initiates a test cycle for heating, cooling, and fan operation.

Care & Maintenance

Clean display with soft, dry cloth. Do not use liquids or abrasive cleaners.

Replace batteries annually or when low battery icon appears.

Replace HVAC air filter as indicated by filter reminder.

CAUTION! Turn off power before cleaning or servicing. Keep thermostat away from direct sunlight, drafts, and heat sources.

Regulatory Information

This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that it does not cause harmful interference. Copyright © American Standard Heating & Air Conditioning. For support, visit www.americanstandardair.com or contact 1-800-428-4328.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Blank display	Power loss / dead batteries	Check circuit breaker; replace AA batteries.
System not turning on	Incorrect mode / wiring	Ensure mode is set to HEAT or COOL; verify wiring connections.
Incorrect temperature reading	Location / calibration	Relocate away from heat sources; calibrate in menu.
Schedule not following program	Hold active / clock error	Press RUN to resume schedule; check clock settings.
Short cycling	Setpoints too close	Increase difference between heating and cooling setpoints.

Reset: Remove batteries and disconnect from HVAC power for 30 seconds to restore factory defaults.

Service: 1-800-428-4328; www.americanstandardair.com