American Standard HVAC ALLEGIANCE 4A7A6 Manual

The American Standard ALLEGIANCE 4A7A6 is a high-efficiency residential air conditioning system designed for reliable cooling performance. This manual covers the 4A7A6 series, featuring durable construction, energy-saving operation, compatibility with various indoor units, and straightforward installation and maintenance procedures. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Components 7. Operation and Maintenance 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Outdoor condensing unit with compressor, coil, fan, and electrical connections; compatible with various indoor air handlers or furnaces.

Feature	Description
High Efficiency	Designed for energy-saving operation with SEER ratings up to 16
Durable Construction	Weather-resistant cabinet with corrosion protection
Quiet Operation	Sound-dampening design for reduced outdoor noise
Compatibility	Works with American Standard indoor units for complete system
Refrigerant	Uses R-410A environmentally friendly refrigerant
Electrical Requirements	Standard residential voltage (208/230V, 1-phase)
Thermostat Connection	Compatible with standard 24V thermostats
Safety Switches	High and low pressure switches for system protection
Service Access	Removable panels for easy maintenance access
Warranty	Limited warranty on compressor and components

Installation

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

Select location: Choose level area with proper clearance (minimum 24" on all sides).
Prepare pad: Install concrete pad or approved mounting system.
Connect refrigerant lines: Connect copper lines between outdoor unit and indoor coil.
Connect electrical: Run proper gauge wire from disconnect box to unit terminals.
Connect drain line: Ensure proper condensate drainage from indoor unit.
Connect thermostat: Run low-voltage wires to thermostat location.

WARNING! Installation must be performed by qualified HVAC technician. Refrigerant handling requires EPA certification.

First-Time Setup

After installation, perform initial startup and system check.

Verify electrical connections: Ensure all connections are tight and correct.
Check refrigerant charge: Measure and adjust to manufacturer specifications.
Test operation: Turn on power and test cooling cycle.
Set thermostat: Program desired temperature settings.
Check airflow: Verify proper airflow at indoor registers.
Document installation: Record model numbers, serial numbers, and installation date.

CAUTION! Do not operate without proper refrigerant charge. Ensure electrical disconnect is accessible.

Specifications

Model Series: 4A7A6
Cooling Capacity: 1.5 to 5 tons (18,000 to 60,000 BTU/h)
SEER Rating: Up to 16 SEER
Refrigerant: R-410A
Electrical: 208/230V, 1-phase, 60Hz
Operating Ambient: 55°F to 115°F (13°C to 46°C)
Sound Level: As low as 72 dB(A)
Dimensions (approx): Varies by tonnage (typical: 31"W x 31"D x 26"H)
Shipping Weight: 150-250 lbs depending on size
Warranty: 10-year limited on compressor, 5-year on parts

Controls and Settings

Primary control through connected thermostat. Unit has internal safety controls and diagnostic LEDs.

Thermostat Settings: COOL mode, temperature setpoint, fan AUTO/ON.

Unit Controls: Electrical disconnect (external), compressor contactor, fan relay, capacitor.

Diagnostic LEDs: Green (power), Yellow (compressor operation), Red (fault indication).

Safety Controls: High pressure switch, low pressure switch, compressor overload, fan time delay.

Connecting Components

Connect to indoor unit (air handler or furnace), thermostat, and power supply.

Turn off all power at main panel and disconnect.
Connect refrigerant lines: Braze connections, pressure test, evacuate, charge.
Connect electrical: Line voltage to contactor, low voltage to thermostat terminals.
Connect drain line: From indoor coil to proper drainage.
Connect thermostat: Match wire colors to terminal designations.

Tip: Use nitrogen when brazing to prevent oxidation inside copper lines.

Operation and Maintenance

Regular maintenance ensures optimal performance and longevity.

Seasonal startup: Remove winter cover, clear debris, check electrical connections.
Monthly: Check airflow at registers, listen for unusual noises.
Annual professional service: Clean coils, check refrigerant charge, inspect electrical components.
Filter maintenance: Change indoor air filter every 1-3 months.
Coil cleaning: Clean outdoor coil annually or as needed.
Winterizing: Install cover if unit will be idle during freezing temperatures.

WARNING! Always turn off power at disconnect before performing any maintenance.

Safety Features

High pressure switch: Shuts off compressor if discharge pressure too high. Low pressure switch: Shuts off compressor if suction pressure too low. Compressor overload: Thermal protection against overheating. Fan time delay: Prevents short cycling. Electrical disconnect: Required within sight of unit.

Care & Cleaning

Turn off power at disconnect before cleaning. Keep area around unit clear of debris.

Outdoor coil: Clean with coil cleaner and gentle water spray from inside out.
Fan blades: Clean with soft brush, check for balance.
Cabinet: Wash with mild detergent and water, rinse thoroughly.
Clearances: Maintain minimum 24" clearance on all sides, 48" above.

CAUTION! Do not use pressure washer on coils. Do not bend fins.

Regulatory Information

UL listed for safety. Meets DOE energy efficiency standards. EPA Section 608 compliant for refrigerant handling. Contains R-410A refrigerant which must be recovered by certified technicians. Manufactured to comply with applicable ANSI/ASHRAE standards. For support, contact American Standard at 1-800-926-4662 or visit www.americanstandardair.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not running	Power, thermostat, disconnect	Check circuit breaker, thermostat settings, disconnect switch.
Running but not cooling	Dirty filter, low refrigerant	Change filter, check for ice on lines, call for service.
Short cycling	Dirty coil, thermostat location	Clean outdoor coil, check thermostat placement.
Loud noises	Debris in fan, loose parts	Turn off power, remove debris, tighten components.
Ice on lines	Low airflow, low charge	Change filter, check blower, call for service.
High energy bills	Dirty coils, leaks, old filter	Clean coils, check ductwork, change filter regularly.

Reset: Turn off at thermostat and disconnect, wait 5 minutes, restore power.

Service: 1-800-926-4662; www.americanstandardair.com