American Standard HVAC 4A6V8049A1000A Manual

The American Standard 4A6V8049A1000A is a high-efficiency residential air conditioning unit designed for reliable cooling performance. This system features a durable scroll compressor, corrosion-resistant coil, and meets ENERGY STAR® efficiency standards. Below are key sections covering safety, specifications, installation, operation, maintenance, and troubleshooting for proper use and service.

1. Features at a Glance 2. Installation Guidelines 3. First-Time Startup 4. Technical Specifications 5. Controls and Settings 6. Connecting to Thermostat 7. Operating Instructions 8. Maintenance Procedures 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Outdoor condenser unit with scroll compressor, aluminum fins with Spine Fin™ coil technology, low-sound fan, service valves, and weather-resistant cabinet.

Feature	Description
Compressor Type	High-efficiency scroll compressor for quiet operation
Coil Design	Corrosion-resistant Spine Fin™ coil for enhanced heat transfer
Sound Level	Low outdoor sound rating for reduced noise
Refrigerant	R-410A, environmentally friendly
Electrical Connection	Single-phase, 208/230V power supply
Service Valves	Front-access liquid and suction valves
Cabinet	Galvanized steel with powder-coat paint
Filter Drier	Replaceable core for system protection
Fan Motor	Permanent split capacitor (PSC) type
Warranty	Limited 10-year compressor warranty

Installation Guidelines

Unpack and inspect unit for shipping damage. Select a level, stable outdoor location with adequate clearance.

Position unit: Place on concrete pad or approved mounting system with minimum 24-inch clearance on all sides.
Connect refrigerant lines: Braze lines using nitrogen purge; ensure proper insulation on suction line.
Electrical connections: Connect power wiring to disconnect box per local codes; ground unit properly.
Connect to indoor unit: Match refrigerant lines to evaporator coil; install filter drier.
Evacuate and charge: Pull deep vacuum to 500 microns; charge with R-410A to specified weight.

WARNING! Only qualified HVAC technicians should install. Follow all safety codes. Disconnect power before servicing.

First-Time Startup

After installation, perform startup procedure to ensure proper operation.

Verify electrical: Ensure power is connected and voltage matches nameplate.
Check refrigerant charge: Use manifold gauges; compare to charging chart based on line length.
Start system: Turn on thermostat to cooling mode; listen for proper compressor and fan operation.
Measure performance: Check temperature drop across evaporator (typically 15-20°F).
Inspect airflow: Verify indoor airflow meets specifications (typically 400 CFM per ton).

CAUTION! Do not operate without proper refrigerant charge. Overcharge or undercharge can damage compressor.

Technical Specifications

Model Number: 4A6V8049A1000A
Cooling Capacity: 4 Tons (48,000 BTU/H)
SEER Rating: Up to 16 SEER (ENERGY STAR® qualified)
Refrigerant: R-410A
Electrical Data: 208/230V, 1 Phase, 60 Hz
Compressor: Scroll type with sound insulation
Fan Motor: Permanent Split Capacitor, multi-speed
Operating Range: Outdoor temperatures up to 115°F
Sound Rating: As low as 72 dB
Dimensions: 35" H x 31" W x 31" D (approximate)
Shipping Weight: 245 lbs

Controls and Settings

Primary control via compatible thermostat. Unit includes internal protection controls.

Thermostat Settings: COOL, OFF, FAN AUTO/ON. Set temperature differential (typically 1-2°F).

Internal Controls: High-pressure switch, low-pressure switch, compressor overload protection, anti-short cycle timer (typically 5 minutes), fan delay on shutdown.

Service Settings: Test mode jumper for service diagnostics (refer to service manual).

Connecting to Thermostat

Compatible with most 24V thermostats. Standard connections: R (power), C (common), Y (compressor), G (fan).

Turn off power at disconnect and indoor air handler/furnace.
Connect thermostat wires to control board at indoor unit.
Run low-voltage wires to outdoor unit; connect to control board terminals.
Verify connections match wiring diagram on unit access panel.

Tip: Use 18-gauge thermostat wire for runs under 100 feet. Shield from high-voltage lines.

Operating Instructions

For normal homeowner operation via thermostat.

Set thermostat to COOL mode.
Set desired temperature (typically 72-78°F for cooling).
Set fan to AUTO (cycles with compressor) or ON (continuous).
System will cycle automatically to maintain setpoint.
For seasonal shutdown: Turn thermostat to OFF, clean outdoor unit, consider protective cover.

WARNING! Do not set thermostat below 70°F for extended periods; may cause coil freezing. Allow 5 minutes between cycles.

Maintenance Procedures

Regular maintenance ensures efficiency and longevity. Schedule professional service annually.

Homeowner Maintenance: Keep area around unit clear (2 feet minimum), clean debris from coil fins, check for unusual noises.

Professional Maintenance: Check refrigerant charge, clean condenser coil, check electrical connections, measure amp draws, inspect contactor and capacitors, verify drainage.

Care & Cleaning

Turn off power before cleaning. Use garden hose to gently spray condenser coil from inside out. Straighten bent fins with fin comb.

CAUTION! Do not use pressure washer; can damage fins. Do not use chemical cleaners unless approved. Keep electrical components dry.

Regulatory Information

UL listed. Meets DOE efficiency standards. Contains refrigerant subject to EPA Section 608 regulations. Proper recovery required. Manufactured to comply with ASHRAE standards. For support, contact American Standard at 1-800-628-4516 or visit www.americanstandardair.com. This product may be covered by one or more U.S. patents.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not running	Power loss, thermostat setting, breaker tripped	Check disconnect switch, verify thermostat in COOL mode, reset breaker.
Poor cooling	Dirty filter, low refrigerant, dirty coils	Replace air filter, check for refrigerant leaks, clean condenser coil.
Unit cycles on/off rapidly	Dirty filter, low refrigerant, oversized unit	Replace filter, check charge, verify proper sizing.
Loud noises	Debris in fan, loose parts, failing motor	Clear debris, tighten mounting bolts, check fan motor.
Ice on refrigerant lines	Low airflow, low refrigerant	Check filter and blower, verify proper charge.
High energy bills	Dirty coils, leaky ducts, incorrect charge	Clean coils, seal ductwork, check refrigerant level.

Reset: Turn thermostat OFF for 5 minutes, then back to COOL. If problem persists, call for service.

Service: Contact qualified HVAC technician. American Standard dealer locator: 1-800-628-4516.