American Standard Thermostat AZON1050AC52ZB Manual

The American Standard Thermostat AZON1050AC52ZB is a programmable digital thermostat designed for precise temperature control of HVAC systems. It features a backlit LCD display, 7-day programming capability, automatic changeover between heating and cooling modes, filter change reminder, system status indicators, and compatibility with most 24VAC heating and cooling systems. Below are key sections for safety, features, installation, programming, operation, and troubleshooting.

Features at a Glance

Key components: Backlit LCD display, Mode button, Fan button, Up/Down arrows, Hold button, Menu/Set button.

Installation

Turn off power to HVAC system before installation. Remove old thermostat and prepare mounting location.

1. Turn off power: Switch off circuit breaker for HVAC system at main electrical panel.
2. Remove old thermostat: Carefully disconnect wires, labeling each with provided wire labels.
3. Mount new backplate: Level and secure to wall using included screws and anchors.
4. Connect wires: Match labeled wires to corresponding terminals on thermostat (R, C, W, Y, G, etc.).
5. Attach thermostat: Snap onto backplate until it clicks into place.
6. Restore power: Turn circuit breaker back on.

WARNING! Electrical shock hazard. Always turn off power before installation. If unsure, consult a qualified HVAC technician.

First-Time Setup

After installation and power restoration, configure initial settings.

1. Set time and date: Press MENU, navigate to CLOCK SETTINGS, set current time and day.
2. Select temperature format: Choose between Fahrenheit (°F) or Celsius (°C).
3. Configure system type: Select HEAT/COOL, HEAT ONLY, or COOL ONLY based on your HVAC system.
4. Set filter reminder interval: Default is 90 days; adjust based on filter type.
5. Test system: Manually activate heating and cooling to verify proper operation.

CAUTION! Ensure correct system type selection to prevent equipment damage.

Specifications

• Power Requirements: 24VAC from HVAC system; Battery backup: 2 AA alkaline batteries.
• Display: Backlit LCD with adjustable brightness.
• Programming: 7-day, 4 periods per day (Wake, Leave, Return, Sleep).
• Temperature Range: 40°F to 99°F (4°C to 37°C).
• Temperature Swing: Adjustable from 0.5°F to 3°F.
• Compatibility: Conventional and heat pump systems (1H/1C, 2H/2C).
• Wire Terminals: R, Rc, Rh, C, W, W2, Y, Y2, G, O/B, L, S1, S2.
• Operating Environment: 32°F to 122°F (0°C to 50°C); 0% to 90% relative humidity (non-condensing).
• Dimensions: 5.5" x 3.5" x 1" (140mm x 89mm x 25mm).
• Warranty: 5-year limited warranty from date of purchase.

Controls and Settings

Front panel controls: MODE (Heat/Cool/Auto/Off), FAN (Auto/On), UP/DOWN arrows, HOLD, MENU/SET.

Display Icons: Heating flame, cooling snowflake, fan, battery, hold, filter reminder.

Menu Settings: Clock, Schedule, System Type, Temperature Format, Filter Timer, Temperature Calibration, Swing Settings, Backlight Brightness, Factory Reset.

Programming: Four periods per day (Wake, Leave, Return, Sleep) with separate temperature settings for weekdays and weekends.

Connecting to HVAC System

Match thermostat wires to HVAC system terminals. Common configurations:

1. Conventional System: R (24VAC), W (Heat), Y (Cool), G (Fan), C (Common).
2. Heat Pump System: R, O/B (Reversing valve), Y1, Y2 (2-stage cooling), W1, W2 (2-stage heating), G, C.
3. Multi-stage Systems: Additional Y2 and W2 connections for 2-stage equipment.

Tip: Refer to HVAC system manual for correct terminal designations. Take photo of old thermostat wiring before removal.

Programming Schedule

Create energy-saving schedule with four periods per day.

1. Access schedule: Press MENU, select SCHEDULE PROGRAMMING.
2. Select day: Choose individual days or copy schedule to other days.
3. Set periods: For each period (Wake, Leave, Return, Sleep), set time and desired temperature.
4. Copy schedule: Use COPY function to apply same schedule to multiple days.
5. Review schedule: Scroll through all periods to verify settings.
6. Exit programming: Press MENU to save and return to main screen.

Energy Saving Tip: Set temperatures 7-10°F lower when away or sleeping in winter; 7-10°F higher in summer.

Energy Saving Features

Automatic Changeover: Automatically switches between heating and cooling based on setpoint. Adaptive Recovery: Learns how long system takes to reach temperature, starts early to reach setpoint at scheduled time. Filter Change Reminder: Reduces energy consumption by ensuring clean filters. Vacation Hold: Set extended away periods with energy-saving temperatures.

Care & Cleaning

Turn off power before cleaning. Use soft, dry cloth to clean display and casing. Do not use liquids, cleaners, or abrasives.

CAUTION! Never spray cleaning solutions directly on thermostat. Moisture can damage electronics.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. UL Listed: Meets UL 873 safety standards for temperature indicating and regulating equipment. Copyright © 2023 American Standard; trademarks of American Standard Brands. For support, visit www.americanstandard.com or contact 1-800-735-4328.

Troubleshooting

Reset: Menu > System > Factory Reset (erases all custom settings).

Service: 1-800-735-4328; www.americanstandard.com