American Standard HVAC 4A6V7X36A1000A Manual

The American Standard 4A6V7X36A1000A is a high-efficiency, single-stage, 3-ton residential air conditioner with a SEER rating of up to 17. Designed for quiet operation and reliable cooling, it features a durable WeatherGuard™ top, Spine Fin™ coil technology for enhanced heat transfer, and compatibility with American Standard communicating thermostats for optimal system control. Below are key sections covering safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Durable outdoor cabinet with WeatherGuard™ top, Spine Fin™ coil, single-speed scroll compressor, sound-dampening features, and service valve access ports.

Installation Requirements

Unit must be installed by a qualified HVAC technician in accordance with all local codes and the provided installation instructions.

1. Location: Select a level, stable pad (concrete or composite) with adequate clearance (min 24" on all sides, 48" above). Ensure proper drainage.
2. Electrical Connection: Disconnect all power. Connect field-supplied wiring to unit terminal block per wiring diagram. Install correctly sized fused disconnect within sight of unit.
3. Refrigerant Lines: Connect clean, dehydrated, and properly sized copper lines to indoor coil. Brazing with nitrogen purge is required to prevent contamination.
4. Indoor Unit Match: Must be paired with an approved American Standard indoor coil and air handler/furnace for rated efficiency and performance.
5. Final Check: Ensure all connections are tight, service valve caps are installed, and the unit is level.

WARNING! Installation involves high voltage and refrigerant under pressure. Only trained professionals should perform installation. Failure to follow instructions can result in injury, property damage, or voided warranty.

First-Time Startup & Commissioning

After installation, the system must be commissioned by a technician to ensure proper operation and efficiency.

1. Power On: Restore power at disconnect and indoor unit.
2. Thermostat Setup: Set thermostat to OFF. Follow thermostat manual to configure for conventional single-stage cooling.
3. System Check: Technician must verify correct refrigerant charge via subcooling method, check electrical amp draws, measure temperature drop across indoor coil, and ensure condensate drains properly.
4. Test Operation: Set thermostat to COOL mode at a temperature below room temp. Verify outdoor fan and compressor start, airflow is adequate, and system cools steadily without unusual noises.

CAUTION! Do not operate the system without correct refrigerant charge. Low or high charge can damage the compressor and reduce efficiency.

Technical Specifications

• Cooling Capacity: 36,000 BTU/h (3 Tons).
• Efficiency Rating: Up to 17 SEER.
• Refrigerant Type & Charge: R-410A. Factory charge indicated on unit rating plate; additional field charge required based on line set length.
• Electrical Specifications: 208/230V, 1 Phase, 60 Hz. Minimum Circuit Ampacity (MCA) and Maximum Overcurrent Protection (MOP) are listed on unit rating plate.
• Operating Ambient Range: 55°F to 115°F (13°C to 46°C) outdoor temperature.
• Sound Level: As low as 72 dB(A) (varies by installation).
• Dimensions (Approx.): 33" W x 33" D x 31" H.
• Net Weight: Refer to unit rating plate.
• Compliance: Meets DOE and AHRI standards. UL Listed.

System Controls & Settings

Primary control is via the indoor thermostat. The outdoor unit has no user-serviceable control settings.

Thermostat Operation: Set to COOL, AUTO FAN, and desired temperature. System will cycle compressor and fan to maintain setpoint.

LED Status Light: The outdoor unit control board has an LED for diagnostics. Steady ON = normal operation. Flashing patterns indicate specific fault codes (see Troubleshooting).

Service Technician Settings: Dip switches or jumper settings on the control board may be adjusted by a technician for specific applications (e.g., low ambient kit compatibility). Do not alter.

Connecting to Thermostat & Indoor Unit

The outdoor unit connects via a 2-wire (plus ground) high-voltage power line and a 2-wire (typically) low-voltage control circuit to the indoor unit.

1. Power Disconnect: Turn OFF power at the disconnect and indoor unit before making any connections.
2. Low-Voltage (Control) Wires: Connect the 24VAC control wires from the indoor unit (Y for cooling, C for common) to the corresponding terminals (Y and C) on the outdoor unit's control board.
3. Line Voltage Wires: Connect the high-voltage wires (L1, L2, Ground) from the disconnect to the terminal block in the outdoor unit's electrical compartment.
4. Verify: Ensure all wire connections are secure and the compartment cover is properly sealed before restoring power.

Tip: Use copper conductors only. Refer to the wiring diagram on the unit's access panel for specific terminal designations.

Normal Operation & Cycling

When the thermostat calls for cooling, the outdoor fan and compressor will start. The system will run until the set temperature is reached.

1. Startup: You may hear a click from the thermostat relay, followed by the outdoor fan starting. The compressor will start shortly after, which may produce a soft hum.
2. Running: The unit should run with a steady sound. You should feel cool air from your indoor vents.
3. Cycling Off: When the thermostat is satisfied, the compressor will stop, and the outdoor fan may continue for a short time to cool the coil.
4. Defrost & Low Ambient: This model is not designed for heating. In cool weather, a properly installed low ambient kit (if applicable) may allow operation down to 55°F outdoor temp.

WARNING! Do not attempt to manually start or stop the compressor. Always use the thermostat. Do not insert objects into the fan grille.

Maintenance Procedures

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

Annual Professional Service Should Include:

• Inspect and clean condenser coil (from the outside with a soft brush or low-pressure water, power OFF).
• Check refrigerant charge and system pressures.
• Check electrical connections for tightness.
• Inspect contactor and capacitor.
• Verify proper condensate drainage from indoor unit.
• Check and clean indoor evaporator coil and filter as part of indoor unit service.

Care & Cleaning

Homeowner Tasks:

1. Keep the area around the outdoor unit clear of leaves, grass clippings, shrubs, and debris (min 24 inches).
2. Gently rinse the condenser coil fins with a garden hose (no high-pressure washers) at the beginning of the cooling season, ensuring power is OFF.
3. Do not paint the coil or cabinet.
4. Ensure the indoor air filter is changed regularly (every 1-3 months) according to your indoor unit's manual.

CAUTION! Turn off power at the disconnect before cleaning near the unit. Do not use sharp objects to clean fins. Never operate the system without a clean air filter installed at the indoor unit.

Regulatory & Warranty Information

This product complies with applicable U.S. safety and performance standards. The 4A6V7X36A1000A is covered by a limited warranty from American Standard. The standard warranty includes:

• Compressor: 10-year limited warranty.
• Parts: 10-year limited warranty on functional parts.
• Labor: Limited labor warranty may apply; refer to your warranty certificate for specific terms and registration requirements.

Warranty is valid only if: The unit is installed by a licensed HVAC professional, registered with American Standard (online or by mail) within a specified period, and used in a single-family residential application in the United States or Canada.

For warranty service, contact your installing dealer or American Standard Customer Care. © American Standard Heating & Air Conditioning. American Standard is a trademark of American Standard Inc.

Troubleshooting Guide

Reset: Turning the thermostat OFF for 5 minutes, then back ON, may clear some temporary lockouts. For persistent issues, call a professional.

Service: Contact your authorized American Standard dealer or American Standard Customer Support for assistance.