American Standard HVAC 2A7A8060A Manual

The American Standard 2A7A8060A is a high-efficiency, variable-speed air conditioner or heat pump outdoor unit designed for residential use. It features advanced compressor technology for quiet operation and energy savings, compatibility with American Standard communicating thermostats for precise climate control, durable construction with a weather-resistant cabinet, and diagnostic LEDs for service troubleshooting. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Variable-speed scroll compressor, WeatherGuard™ top, Diagnostic LED lights, Liquid and suction line service valves, Low-voltage terminal block.

Installation

Unpack and inspect contents. Select a level, stable outdoor location with proper clearances.

1. Positioning: Place on a solid, level pad (concrete or approved composite) with minimum clearances as specified.
2. Electrical Connection: Connect power wiring to the disconnect box per local codes and unit nameplate. All wiring must be performed by a qualified technician.
3. Refrigerant Lines: Connect pre-charged, insulated refrigerant linesets from the indoor unit to the outdoor service valves. Brazing must be done with nitrogen purge.
4. Control Wiring: Run low-voltage thermostat cable (minimum 18 AWG) from the indoor air handler/furnace to the outdoor unit's terminal block.
5. Drainage: Ensure condensate drain line from indoor unit is properly installed and unobstructed.

WARNING! Installation and service must be performed by a qualified HVAC technician in accordance with all national and local safety codes. Incorrect installation can cause property damage, personal injury, or death. Disconnect all power before servicing.

First-Time Setup & Commissioning

After mechanical installation, power on the system and perform startup procedure.

1. Power Up: Restore power at the disconnect and indoor unit.
2. Thermostat Setup: Configure compatible communicating thermostat (e.g., American Standard AccuLink™) for system type, stages, and desired settings.
3. System Check Mode: Use thermostat or service tool to initiate a system test cycle to verify operation of compressor, fan, and reversing valve (if heat pump).
4. Refrigerant Charge Verification: Technician must verify correct refrigerant charge using subcooling (cooling) or superheat (heating) method per manual.
5. Airflow Measurement: Measure and adjust indoor airflow to meet specification for optimal performance and efficiency.

CAUTION! Do not operate the unit without verifying refrigerant charge and electrical connections. Improper charge can damage the compressor.

Specifications

• Model: 2A7A8060A
• Type: Variable-Speed Air Conditioner / Heat Pump (check model variant)
• Cooling Capacity: Approximately 5 Tons (60,000 BTU/h) - Verify with nameplate.
• SEER Rating: Up to 20 SEER (Depends on matched indoor unit)
• Refrigerant: R-410A
• Electrical Data: 208/230V, 1 Phase, 60 Hz. See unit nameplate for Minimum Circuit Ampacity (MCA) and Maximum Overcurrent Protection (MOP).
• Operating Ambient Temp (Cooling): 55°F to 125°F
• Operating Ambient Temp (Heating - HP): -5°F to 70°F (may vary)
• Sound Level: As low as 72 dB(A) (varies with model)

Controls and Settings

Primary control is via the indoor thermostat. Outdoor unit has a control board with diagnostic LEDs.

Thermostat Control: Set mode (COOL, HEAT, AUTO, OFF), fan (AUTO, ON), and temperature setpoint. Advanced settings may include staging delays, fan circulation time, and humidity control.

Outdoor Unit LEDs: LED1 (Green) and LED2 (Red/Amber) flash in patterns to indicate normal operation, standby, or fault codes. Refer to service manual label on unit panel for code interpretation.

Dip Switches (if applicable): May be present on control board for specific configuration (e.g., thermostat type, low ambient cooling).

Connecting to Indoor Unit & Thermostat

This is a split system requiring a matched indoor coil (evaporator) and air handler or furnace.

1. Match the outdoor unit with an American Standard approved indoor unit for rated efficiency.
2. Connect the two units with correctly sized refrigerant linesets.
3. Connect low-voltage control wires (typically Y, C, O/B, G, R) between the outdoor terminal block, indoor unit control board, and thermostat.
4. For communicating systems, use specialized thermostat cable (4-conductor shielded) per instructions.

Tip: Always refer to the installation manual for the specific indoor unit for correct wiring diagram and dip switch settings.

Operation Modes

Mode is selected at the thermostat.

1. Cooling Mode: Compressor and outdoor fan run to transfer heat from indoors to outdoors. Variable speed adjusts to match cooling demand.
2. Heating Mode (Heat Pump): Reversing valve activates. Unit operates as a heat pump, extracting heat from outdoor air and transferring it indoors.
3. Fan Only: Only the indoor air handler/furnace fan operates to circulate air without conditioning.
4. Auto Mode: Thermostat automatically switches between heating and cooling based on room temperature and setpoints.
5. Defrost Cycle (Heat Pump): In heating mode during cold, humid weather, unit will temporarily reverse to melting ice on outdoor coil. Fan may stop. This is normal.

WARNING! Do not switch between heating and cooling modes rapidly. Allow several minutes between mode changes to protect the compressor.

Maintenance

Annual maintenance by a qualified technician is recommended.

1. Outdoor Coil: Keep clean and free of leaves, grass, and debris. Gently clean with a soft brush or low-pressure water from the inside out. Do not use a pressure washer.
2. Airflow: Ensure indoor air filter is clean and replaced regularly (every 1-3 months).
3. Inspection: Technician should inspect electrical connections, refrigerant charge, coil condition, drain lines, and fan motor annually.
4. Winter Care (AC Mode): Consider using a waterproof cover to protect from ice and debris if unit will not be used for heating.

CAUTION! Always disconnect power at the disconnect switch before performing any cleaning or maintenance around the outdoor unit.

Regulatory Information

This product complies with applicable U.S. safety and performance standards. The refrigerant used (R-410A) is subject to EPA regulations regarding handling and recovery. Only EPA-certified technicians may service the refrigerant circuit. This unit contains materials that must be recycled or disposed of properly at end of life. Manufactured for residential use. For technical support or warranty service, contact your installing American Standard dealer or visit www.americanstandardair.com.

Troubleshooting

Reset: Turning thermostat OFF or cycling power at the disconnect may clear temporary faults. Persistent faults require service.

Service: Contact your authorized American Standard dealer. For product information: www.americanstandardair.com.