American Standard HVAC 4TXM2136A14N0A Manual

The American Standard 4TXM2136A14N0A is a high-efficiency, single-stage, 3.5-ton residential air conditioner condenser unit. Designed for durability and quiet operation, it features a scroll compressor, Spine Fin™ coil for enhanced heat transfer, and a weather-resistant cabinet. Compatible with American Standard matched indoor coils and furnaces for optimal system performance. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Durable galvanized steel cabinet, Scroll compressor, Spine Fin™ coil, Single-speed fan, High and low-pressure switches, Liquid line filter-drier, Service valves.

Installation

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

1. Location: Select a well-ventilated area, away from windows and shrubbery, with adequate clearance (min 24 inches on all sides).
2. Pad: Place on a level concrete pad or approved composite stand.
3. Electrical Connection: Connect to dedicated circuit per local codes. Use proper gauge copper wire and a fused disconnect.
4. Refrigerant Lines: Connect pre-charged, insulated refrigerant lineset from indoor unit. Brazing must be done with nitrogen purge.
5. Condensate Drain: Ensure indoor unit drain line is properly installed and routed.
6. Final Check: Verify all connections are tight and secure. Remove compressor shipping bolts.

WARNING! Installation must be performed by a qualified HVAC technician in accordance with all national and local codes. Incorrect installation can cause property damage, personal injury, or death.

First-Time Setup & Startup

After installation, perform initial startup and system check.

1. Power On: Restore power at disconnect and indoor unit.
2. Thermostat Setup: Set thermostat to OFF, then to COOL mode with a temperature setting below room temperature.
3. System Start: The outdoor fan and compressor should engage. Listen for normal operating sounds.
4. Performance Check: Measure superheat and subcooling to verify correct refrigerant charge.
5. Airflow Verification: Check indoor airflow and temperature drop across the indoor coil (typically 15-20°F).

CAUTION! Do not operate the unit without the service panels securely in place. Ensure the refrigerant circuit is sealed and leak-checked before operation.

Specifications

• Model Number: 4TXM2136A14N0A
• Cooling Capacity: 42,000 BTU/H (3.5 Tons)
• SEER Rating: Up to 16 SEER (with matched indoor unit)
• Refrigerant Type: R-410A
• Refrigerant Charge (Factory): See unit rating plate
• Electrical Data: 208/230V, 1 Phase, 60 Hz, Minimum Circuit Ampacity: See rating plate
• Operating Ambient Temp Range: 55°F to 115°F
• Sound Level: [Insert dB rating if available]
• Net Weight: Approximately [Insert weight] lbs
• Dimensions (L x W x H): [Insert dimensions] inches

Controls and Operation

Operation is controlled by the indoor thermostat. The unit has no user-operable controls on the outdoor cabinet.

Thermostat Operation:

• Set system mode to COOL, HEAT (if heat pump), or OFF.
• Set desired temperature. The unit will cycle on and off to maintain setpoint.
• Use FAN setting to run indoor fan continuously (ON) or only with a call for cooling (AUTO).

Unit Indicators: The unit has an LED fault indicator light on the control board inside the service panel. Refer to the troubleshooting chart for flash code patterns.

Connecting to Indoor Unit

This condenser must be paired with a matched American Standard indoor coil (evaporator) and air handler or furnace.

1. Ensure the indoor coil is properly installed in the plenum or air handler.
2. Connect the refrigerant lineset between the indoor and outdoor units.
3. Connect the low-voltage control wires (typically 24V) from the outdoor unit to the indoor unit's control board (Y, C, O/B if heat pump).
4. Connect the high-voltage power leads to the indoor air handler/furnace as per wiring diagram.

Tip: Always refer to the installation instructions for both the indoor and outdoor units for specific wiring and piping requirements.

Maintenance Procedures

Homeowner (Annual):

1. Turn OFF power to the unit at the disconnect.
2. Clear debris (leaves, grass) from around the unit and the coil fins. Use a gentle stream of water from a hose to clean the coil from the inside out.
3. Ensure shrubs are trimmed back at least 24 inches for proper airflow.

Professional Service (Annual):

1. Inspect electrical connections for tightness and corrosion.
2. Check refrigerant charge and system pressures.
3. Inspect coil fins; straighten if bent.
4. Check fan motor and blades for wear and balance.
5. Lubricate motor bearings if required (check specifications).
6. Inspect and clean the indoor coil and drain pan.

Safety Features

High-Pressure Switch: Shuts off compressor if discharge pressure becomes excessive.
Low-Pressure Switch: Shuts off compressor if suction pressure is too low, indicating potential loss of charge.
Compressor Overload Protector: Internal protection against overheating.
Time Delay: Built-in delay (typically 5 minutes) prevents short cycling of the compressor.
Fused Disconnect: Required external component for circuit protection.

Care & Cleaning

Outdoor Unit: Keep the area around the unit clear. Clean the coil annually with water. Do not use a pressure washer as it can damage the fins.
Cabinet: Wash with mild soap and water if needed. Do not use harsh chemicals or abrasives.
Indoor Unit: Replace or clean air filters monthly during peak seasons. Keep the drain line clear.

CAUTION! Always turn off electrical power at the disconnect switch before performing any cleaning or maintenance near the unit.

Regulatory Information

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 during service or disposal. This unit contains materials that may be recycled. For information on proper disposal or recycling, contact your local authorities or American Standard.
Manufacturer: American Standard Heating & Air Conditioning
For support: Contact your installing dealer or visit www.americanstandardair.com

Troubleshooting

Reset: Turn thermostat to OFF, turn off power at disconnect for 5 minutes, then restore power and reset thermostat.

Service: For all technical issues beyond basic homeowner maintenance, contact your qualified American Standard dealer.