American Standard HVAC 4A7L5024N1000A Manual

The American Standard 4A7L5024N1000A is a high-efficiency, single-stage, 2-ton air conditioning condenser unit designed for residential use. It features a durable, weather-resistant cabinet, a scroll compressor for quiet operation, a Spine Fin™ coil for efficient heat transfer, and compatibility with American Standard communicating thermostats for enhanced system control. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Weather-resistant galvanized steel cabinet, Scroll compressor, Spine Fin™ coil, Liquid and suction line service valves, High and low-pressure switches, Fan motor with permanent capacitor.

Installation Requirements

Unpack and inspect unit for shipping damage. Select a suitable outdoor location.

1. Location: Place on a level, stable pad (concrete or composite). Ensure minimum clearances: 24" top, 30" sides, 48" front (service access).
2. Electrical: Connect to a dedicated, properly sized circuit breaker. Install a field-supplied weatherproof disconnect within sight of the unit.
3. Refrigerant Lines: Connect properly sized, clean, and dehydrated copper linesets from the indoor coil to the unit's service valves.
4. Condensate Drain: Ensure indoor unit drain line is properly installed and unobstructed.

WARNING! Installation must be performed by a qualified HVAC technician in accordance with all local codes and the National Electrical Code (NEC). 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.

1. Pre-Start Check: Verify all electrical connections are tight. Ensure refrigerant lines are connected and service valves are open.
2. Thermostat Setup: Set thermostat to OFF. Restore power at disconnect and indoor unit. Follow thermostat programming guide for initial settings (mode, temperature, fan).
3. System Start: Set thermostat to COOL and a temperature below room temp. The outdoor fan and compressor should engage. Listen for unusual noises.
4. Measurements: Technician must measure superheat/subcooling, system pressures, voltage, and amperage to verify correct charge and operation.

CAUTION! Do not operate the unit without the service panels securely in place. Keep the area around the unit clear of debris and vegetation.

Specifications

• Model: 4A7L5024N1000A
• Cooling Capacity: 24,000 BTU/H (2 Tons)
• SEER Rating: Up to 16 SEER (System Dependent)
• Refrigerant Type & Charge: R-410A (Factory Charge: See unit rating plate)
• Electrical Data: 208/230V, 1 Phase, 60 Hz. (See rating plate for Min. Circuit Ampacity and Max. Fuse Size)
• Operating Ambient Temp Range: 55°F to 115°F
• Sound Level: Approximately 72 dB(A)
• Net Weight: Approximately 150 lbs
• Liquid Line Connection: 3/8" SAE Flare
• Suction Line Connection: 3/4" SAE Flare

System Controls & Settings

Primary control is via the indoor thermostat. Unit has internal safeties (high/low pressure switches, compressor overload).

Thermostat Functions: MODE (Cool/Off/Heat*), FAN (Auto/On), TEMPERATURE SETPOINT. *Heating requires a matched furnace or heat pump.

LED Status Light (on control board): Steady ON = normal operation. Flashing patterns indicate specific fault codes (see Troubleshooting section).

Service Valve Positions: Back-seated (fully counterclockwise) for normal operation. Front-seated (fully clockwise) for system pump-down or service.

Connecting to Thermostat & Indoor Unit

Low-voltage connection (typically 24VAC) between indoor air handler/furnace, thermostat, and outdoor unit.

1. Turn OFF all power to indoor and outdoor units.
2. At the outdoor unit's control panel, connect the low-voltage wires from the indoor unit (typically labeled Y, C, O/B, G, etc.) to the corresponding terminals.
3. At the thermostat sub-base, connect wires from the indoor unit according to the wiring diagram.
4. Ensure the common (C) wire is connected for proper operation of communicating features if applicable.

Tip: Refer to the wiring diagram located on the inside of the outdoor unit's service panel and the indoor unit's installation manual for specific terminal designations.

Normal Operation

Unit cycles automatically based on thermostat demand.

1. Cooling Cycle: Thermostat calls for cooling, energizing the Y and G terminals. Indoor blower starts, followed by outdoor fan and compressor.
2. Cycle Completion: When set temperature is reached, thermostat satisfies, de-energizing outdoor unit. Indoor blower may run briefly (if set to AUTO) to remove residual cool air.
3. Fan Only Operation: Setting thermostat FAN to ON runs the indoor blower continuously for air circulation, without outdoor unit operation.
4. Defrost Cycle (Heat Pump models only): Not applicable to this straight-cool condenser.

WARNING! Do not attempt to manually operate contactors or service valves while unit is energized. Do not spray water on the unit while it is running.

Maintenance Schedule

Homeowner (Monthly/Seasonally):

• Keep unit clear of leaves, grass, snow (at least 2 feet clearance).
• Gently rinse outdoor coil with a garden hose (from the inside out) to remove loose dirt and debris. POWER MUST BE OFF.
• Ensure indoor return air filters are clean (check monthly, replace as needed).

Professional Technician (Annually):

• Inspect electrical connections and tighten if necessary.
• Check refrigerant charge and system pressures.
• Clean condenser coil thoroughly if needed.
• Check fan motor and blades for wear/balance.
• Inspect contactor for pitting.
• Verify condensate drain is clear.

Regulatory & Warranty Information

This product complies with applicable U.S. safety and performance standards. The 4A7L5024 unit is covered by a limited warranty. The compressor has a separate limited warranty. Registration is required for full warranty benefits; see warranty certificate included with the unit or register online at www.americanstandardair.com. For technical support or to locate a dealer, visit the website or contact American Standard Heating & Air Conditioning at 1-800-428-4326.

Troubleshooting

Reset: For lockout conditions, turn thermostat to OFF, turn off power at disconnect for 30 seconds, then restore power and reset thermostat.

Service: For all technical issues, contact a qualified American Standard dealer. 1-800-428-4326; www.americanstandardair.com