American Standard HVAC 2A7A3018-060A Manual

The American Standard 2A7A3018-060A is a high-efficiency air conditioner condenser unit designed for residential use. This 5-ton unit features a two-stage compressor, R-410A refrigerant, a durable WeatherGuard™ top, and a sound-reducing fan system. It is designed to pair with compatible American Standard indoor units to provide efficient and reliable cooling. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Startup & Commissioning 4. Specifications 5. Controls and Operation 6. Wiring and Electrical Connections 7. Maintenance Procedures 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Two-stage scroll compressor, WeatherGuard™ protective top, Spine Fin™ coil, sound-reducing fan with swept-wing blades, low-pressure switch, high-pressure switch, and compressor protection features.

Feature	Description
Two-Stage Compressor	Provides efficient operation at high and low cooling loads
WeatherGuard™ Top	Protects internal components from weather and debris
Spine Fin™ Coil	Enhanced heat transfer and corrosion resistance
Sound-Reducing Fan	Swept-wing blades and insulated top for quiet operation
R-410A Refrigerant	Environmentally friendly, non-ozone depleting refrigerant
Service Valves	Front-facing for easy access
Diagnostic LED	Flashing code indicator for troubleshooting
Low/High Pressure Switches	Protects compressor from abnormal operating conditions
Compressor Heater	Prevents refrigerant migration during off-cycles
Corrosion Protection	Galvanized steel base and powder-coated finish

Installation Requirements

Unpack and inspect contents. Place on a level, stable pad.

Location: Select a level site with adequate clearance (min 24" on all sides, 48" above). Ensure proper drainage.
Pad: Install on a solid, level concrete, composite, or isolation pad.
Refrigerant Lines: Connect pre-charged, insulated lineset from indoor unit. Ensure connections are tight and leak-free.
Electrical: Connect to dedicated 230V, 60Hz circuit with proper disconnect and fusing as per local codes.
Condensate Drain: Ensure indoor unit drain line is properly installed and unobstructed.

WARNING! Installation must be performed by a qualified HVAC technician. Incorrect installation can cause property damage, personal injury, or death. Disconnect all power before servicing.

First-Time Startup & Commissioning

Power on system; follow startup procedure.

Pre-Start Check: Verify all electrical connections are tight. Ensure refrigerant lines are connected and service valves are open.
Thermostat Setup: Set compatible thermostat to OFF. Configure for two-stage cooling if applicable.
Power Up: Restore power at disconnect and indoor air handler/furnace.
System Check: Set thermostat to COOL and a temperature below room temp. Verify condenser fan starts, compressor engages (stage 1), and cool air is delivered.
Measurements: Technician must verify correct refrigerant charge (subcooling method), voltage, amperage, and temperature drop across indoor coil.

CAUTION! Do not operate without correct refrigerant charge. Allow 5 minutes between compressor cycles.

Specifications

Model: 2A7A3018-060A
Cooling Capacity: 60,000 BTU/H (5 Tons)
SEER Rating: Up to 18 SEER
Refrigerant: R-410A
Electrical Data: 208/230V, 1 Phase, 60 Hz
Minimum Circuit Ampacity (MCA): 26.0 Amps
Maximum Overcurrent Protection (MOP): 40 Amps
Compressor Type: Two-Stage Scroll
Operating Ambient Temp Range: 55°F to 115°F
Sound Rating: As low as 72 dB
Dimensions (L x W x H): Approx. 35" x 35" x 31"
Shipping Weight: Approx. 250 lbs

Controls and Operation

Primary control is via the paired indoor thermostat. Unit includes internal control board with diagnostic LED.

Thermostat Operation: Use compatible two-stage thermostat. First stage provides efficient partial load cooling. Second stage engages for full capacity on hottest days.

Condenser Control Board: Manages compressor staging, fan speed, and safety lockouts. LED flashes normal code (1 flash every 3 seconds) during operation. Rapid or specific flash patterns indicate faults (see Troubleshooting).

Compressor Heater: Energized when outdoor temp is below 70°F and system is off to prevent liquid refrigerant from accumulating in compressor crankcase.

Wiring and Electrical Connections

Refer to unit wiring diagram on inside of service panel.

Turn OFF all power at main breaker and install a lockout tag.
Remove access panel to expose terminal block.
Run proper gauge copper conductors (see specs) from disconnect to unit. Connect L1, L2, and ground to terminal block.
Connect 24V control wires from indoor unit (Y1, Y2, C, O/B if heat pump, etc.) to low-voltage terminal strip.
Ensure all connections are secure. Replace panel before restoring power.

Tip: Use a weatherproof conduit fitting. Seal all conduit entries to prevent moisture intrusion.

Maintenance Procedures

Annual maintenance by a qualified technician is recommended.

Power Down: Disconnect power at the outdoor disconnect.
Clean Coil: Remove top grille. Gently clean outdoor coil with a soft brush and coil cleaner. Rinse with low-pressure water from the inside out. Do not use a pressure washer.
Clear Debris: Remove leaves, grass, and debris from inside the unit and around the base.
Check Fan: Inspect fan blades for cracks and ensure it spins freely.
Inspect Electrical: Technician should check all connections, capacitor, contactor, and control board.
Check Refrigerant Charge: Technician must verify charge using subcooling method.
Restart: Replace all panels, restore power, and verify normal operation.

WARNING! Always disconnect power. The fan can start automatically. Keep fingers and tools away from moving parts.

Safety Features

Internal safeties protect the compressor and system.

High-Pressure Switch: Opens on excessively high discharge pressure.
Low-Pressure Switch: Opens on excessively low suction pressure.
Compressor Thermal Overload: Internal protector.
Anti-Short Cycle Timer: Prevents compressor from restarting for at least 5 minutes.
Fused Disconnect Required: External overcurrent protection as specified.

Care & Cleaning

Keep area around unit clear of vegetation, leaves, and snow (min 24 inches).

CAUTION! Do not use unit as a shelf. Do not spray water directly into electrical compartments. Do not attempt to clean while unit is running.

Regulatory Information

This product complies with applicable U.S. safety and performance standards. The refrigerant system contains R-410A. Federal law requires that refrigerant be recovered by an EPA-certified technician. This equipment is designed for installation in accordance with National Electrical Code (NEC) ANSI/NFPA 70 and all local codes. For support, contact your installing dealer or American Standard Customer Care.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not start	Power off, thermostat setting, safety lockout	Check disconnect and breaker. Verify thermostat is in COOL mode below room temp. Wait 5 minutes for anti-short cycle. Check diagnostic LED.
Fan runs, compressor does not	Capacitor, contactor, low refrigerant	Check compressor capacitor and contactor. Low pressure switch may be open due to low charge (call technician).
Unit runs but not cooling	Dirty filter/coil, low charge, metering device	Check indoor air filter and outdoor coil. System likely low on refrigerant (call technician).
Unit cycles on/off rapidly	Dirty coil, overcharge, restricted airflow	Clean outdoor coil. Check indoor filter and evaporator coil cleanliness. High-pressure switch may be tripping (call technician).
Loud or unusual noise	Loose parts, debris in fan, failing motor	Turn power OFF. Check for loose panels, screws. Remove debris from fan. If noise persists, contact technician.
Ice on refrigerant lines or coil	Low airflow, low charge	Turn system OFF. Check and replace dirty air filter. Allow ice to melt completely. If problem returns, low refrigerant charge is likely (call technician).

Diagnostic LED Codes (Flashing Patterns): 1 Flash/3 sec = Normal. 2 Flashes = Low Pressure Lockout. 3 Flashes = High Pressure Lockout. 4 Flashes = Compressor Overload. 5 Flashes = Control Board Fault. Continuous Flash = Loss of 24V Power.

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