The American Standard ALLEGIANCE 2A7A1 is a high-efficiency residential air conditioning unit designed for reliable cooling performance. It features a durable, weather-resistant cabinet, a scroll compressor for quiet operation, and a high-efficiency coil. This manual covers safety information, installation guidelines, startup procedures, specifications, operation, maintenance, and troubleshooting for the 2A7A1 series. Below are key sections for proper handling and use.
Key components: Weather-resistant galvanized steel cabinet, Scroll compressor, High-efficiency louvered coil, Liquid and suction line service valves, Low-pressure switch, High-pressure switch.
| Feature | Description |
|---|---|
| Cabinet | Galvanized steel with powder-coat paint for corrosion resistance |
| Compressor | Scroll type for quiet, reliable operation |
| Coil | Enhanced surface louvered fin design for optimal heat transfer |
| Service Valves | Liquid and suction line valves for easy servicing |
| Electrical Box | Conveniently located with clearly marked terminals |
| Sound Insulation | Internal compressor blanket for reduced sound levels |
| Refrigerant | R-410A, environmentally responsible |
| Protection Switches | Low-pressure and high-pressure switches for system protection |
| Mounting | Designed for slab or pad mounting |
| Warranty | Limited warranty; see documentation for details |
Unpack and inspect unit for shipping damage. Select a suitable outdoor location.
WARNING! Installation must be performed by a qualified HVAC technician in accordance with all national and local codes. Failure to do so can result in equipment damage, personal injury, or death.
After installation is complete, perform the following startup procedure.
CAUTION! Do not operate the unit without the service panel securely in place. Keep hands and tools away from the fan while unit is running.
Primary control is via the indoor thermostat. Unit has internal protection controls.
Thermostat: User sets desired temperature and system mode (COOL, OFF, FAN).
Unit Controls: Internal pressure switches and compressor protection module control safe operation. The compressor has a built-in time delay to prevent short cycling.
Normal Operation Cycle: When thermostat calls for cooling, it signals the indoor blower and outdoor unit to start. The compressor and outdoor fan will run until the set temperature is satisfied.
This unit is part of a split system requiring an indoor coil and air handler or furnace.
Tip: Always refer to the wiring diagram located on the unit's service panel for specific connection points.
Regular maintenance is required for efficient and reliable operation.
WARNING! All electrical and refrigerant servicing must be done by a qualified professional. Do not attempt to clean the coil with a high-pressure washer, as it can damage the fins.
High-Pressure Switch: Opens electrical circuit if discharge pressure becomes excessive. Low-Pressure Switch: Opens electrical circuit if suction pressure drops too low. Compressor Protection: Internal module protects against overload, short cycling, and voltage issues. Fuses/Circuit Breakers: Provide overcurrent protection as part of the field-installed disconnect.
Keep the outdoor unit clear of vegetation, leaves, and debris (maintain at least 24 inches clearance). Wash the outdoor coil annually with a gentle stream of water from the inside out. Do not use harsh chemicals.
CAUTION! Always turn off power at the disconnect before performing any cleaning around the unit. Do not bend or damage the delicate aluminum fins.
This product complies with applicable U.S. safety and performance standards. The refrigerant used, R-410A, is regulated by the EPA. Proper recovery and recycling are required by law. This equipment contains refrigerants covered under the EPA's refrigerant management regulations. For technical support or to locate a dealer, visit www.americanstandard.com or contact American Standard Customer Care.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Unit does not start | Power off, thermostat setting, tripped breaker | Check disconnect and breaker; verify thermostat is set to COOL below room temp. |
| Unit runs but does not cool | Dirty filter, dirty coil, low refrigerant | Replace air filter; clean indoor/outdoor coils; call technician to check charge. |
| Unit cycles on/off frequently | Dirty filter/coil, oversized unit, low refrigerant | Clean filter and coils; ensure unit is properly sized; call technician. |
| Ice on refrigerant lines or coil | Low airflow, low refrigerant | Replace filter; check blower; call technician to check charge and airflow. |
| Unusual noise | Loose parts, debris in fan, failing motor | Turn off power and check for loose panels or debris; call technician. |
Reset: If unit locks out on a safety, turn thermostat to OFF, turn off power at disconnect for 5 minutes, then restore power and reset thermostat.
Service: For all repairs, contact a qualified American Standard dealer. Do not attempt repairs yourself.