American Standard HVAC 4A7L6024A1000A Manual

The American Standard 4A7L6024A1000A is a 2-ton, 17 SEER residential air conditioner condenser unit designed for high-efficiency cooling. It operates on 208/230V single-phase power, uses R-410A refrigerant, and is compatible with matching indoor coils and furnaces for optimal performance. This manual covers safety guidelines, installation procedures, startup, operation, maintenance, troubleshooting, and specifications.

Features at a Glance

Key components: Durable galvanized steel cabinet, Spine Fin™ coil, sound-reducing top, high and low-pressure switches, compressor sound blanket, and weather-resistant electrical compartment.

Safety Information

Installation and service must be performed by a qualified technician in accordance with all national and local electrical and mechanical codes.

1. Electrical Hazard: Disconnect all power sources before servicing.
2. Refrigerant Hazard: System contains R-410A under high pressure. Use proper recovery equipment.
3. Lifting Hazard: Unit is heavy. Use proper lifting equipment and techniques.
4. Fire Hazard: Keep unit clear of combustible materials and vegetation.

WARNING! Failure to follow safety instructions can result in electric shock, fire, explosion, personal injury, or death.

Installation Requirements

Select a suitable location and prepare the site.

1. Location: Install on a level, stable pad (concrete or composite) with adequate clearance (min 24" on all sides, 48" above). Ensure good airflow and away from windows.
2. Pad: Use a level, vibration-absorbing pad that extends 2" beyond the unit base.
3. Indoor Unit: Must be paired with an approved American Standard indoor coil (e.g., 4TXCB006DS3HCA) or air handler.
4. Lineset: Use clean, dehydrated, ACR copper tubing of correct size (typically 3/8" liquid, 3/4" suction for 25 ft).
5. Electrical: Provide a dedicated branch circuit with proper disconnect and fusing per nameplate and local codes.

CAUTION! Improper installation will void the warranty and can cause unsafe operation.

Specifications

• Model Number: 4A7L6024A1000A
• Product Series: AccuComfort™ Platinum 17
• Cooling Capacity: 24,000 BTU/h
• SEER: Up to 17
• Refrigerant Type & Charge: R-410A, Factory Pre-charged (for 15 ft lineset)
• Electrical Data: 208/230V, 1Ph, 60 Hz. Min Circuit Ampacity: 15.0, Max Fuse/Breaker: 25
• Fan Motor: 1/5 HP, 1075 RPM
• Operating Weight: 168 lbs (76 kg)
• Sound Level: 74 dB(A)
• Compatible Thermostats: American Standard ComfortLink™ II or conventional 24V thermostats.

Wiring & Electrical Connections

Connect power and control wiring at the unit's weatherproof electrical compartment.

Power Wiring: Use copper conductors only. Connect L1 and L2 from the disconnect to the unit's contactor. Connect the ground wire to the ground lug.

Control Wiring (Low Voltage): Run a minimum 18 AWG shielded cable from the indoor unit (Furnace/Air Handler) to the condenser's low-voltage terminal block (typically labeled Y, C, O/B, etc.). Follow the wiring diagram on the unit panel.

1. Turn OFF all power at the disconnect and indoor unit.
2. Remove the access panel to expose the terminal block.
3. Route wires through the provided conduit knockout and secure with a connector.
4. Make tight connections per the diagram. Ensure the low-voltage thermostat wire is not run in the same conduit as line voltage wires.
5. Replace the access panel securely before restoring power.

Tip: Use a torque screwdriver for terminal connections as specified on the unit label.

Refrigerant Piping

Proper piping is critical for efficiency and reliability.

1. Brazing: Use nitrogen purge (2-5 CFH) while brazing to prevent oxidation inside the tubing.
2. Evacuation: After pressure testing, evacuate the system to a deep vacuum of 500 microns or less. Hold for 15 minutes to check for leaks.
3. Charging: The unit comes with a factory charge for 15 ft of lineset. For longer lines, additional refrigerant must be added per the manufacturer's charging chart (based on line length and diameter). Charge in liquid form into the liquid line service port.
4. Final Check: After startup, verify subcooling (for TXV systems) or superheat (for fixed orifice) per the specifications on the unit rating plate or service manual.

WARNING! Only EPA-certified technicians may handle refrigerant. Use proper gauges and recovery equipment.

Startup & Commissioning

Complete these steps before placing the system into normal operation.

1. Pre-Start Check: Verify all electrical connections are tight. Ensure the disconnect is OFF. Check that the refrigerant service valves are back-seated and then front-seated (open).
2. Voltage Check: Turn ON the disconnect. Measure voltage at the contactor. It must be within +/- 10% of the nameplate rating (e.g., 207-253V).
3. Startup Sequence: Set the indoor thermostat to OFF. Turn ON power to the indoor unit. Set the thermostat to COOL and a temperature below room temp. The indoor fan should start, followed by the outdoor condenser fan and compressor.
4. Performance Check: Listen for unusual noises. Measure operating pressures and temperatures. Compare to the performance data table. Check the temperature drop across the indoor coil (typically 15-20°F).
5. Final Settings: Set the thermostat to desired settings. Explain basic operation to the homeowner.

CAUTION! Do not run the compressor without adequate refrigerant charge or airflow, as this will cause immediate damage.

Operating Instructions

For the homeowner: Use the wall thermostat to control the system.

1. Cooling Mode: Set system to COOL, select desired temperature. The fan can be set to AUTO (runs only with cooling) or ON (continuous).
2. Fan Only: Set system to OFF and fan to ON to circulate air without cooling.
3. Temperature Setting: For efficiency, set cooling temperature no lower than 78°F (26°C) when occupied.
4. Filter Check: Remind homeowner to check the indoor air filter monthly and replace/clean as needed.

Tip: Keep outdoor unit clear of leaves, grass clippings, and snow for optimal performance.

Maintenance Schedule

Regular maintenance by a qualified technician is required to maintain warranty and efficiency.

CAUTION! Homeowners should only perform filter maintenance. All other service must be done by a qualified technician.

Warranty Information

Limited Warranty: The 4A7L6024A1000A unit includes a 10-year limited warranty on the compressor and a 10-year limited warranty on the functional parts (coil, etc.) to the original registered homeowner when installed by a licensed professional. The warranty is valid only if the product is registered within 60 days of installation. For complete warranty terms and conditions, or to register your product, visit www.americanstandardair.com or contact your installing dealer.

Troubleshooting

Reset: If the unit has a lockout, turn the thermostat OFF, turn OFF power at the disconnect for 5 minutes, then restore power and turn thermostat ON.

Service: For all technical service, contact your authorized American Standard dealer. Do not attempt to repair refrigerant circuit or electrical components yourself.