American Standard HVAC YCC024F-L Manual

WARNING! Installation and service must be performed by a qualified HVAC technician. High voltage present. Refrigerant under high pressure. Follow all safety codes.

First-Time Setup & Startup

After installation, perform these steps before energizing the system.

1. Leak Check & Evacuation: Pressurize system with dry nitrogen and check for leaks. Evacuate system to a minimum of 500 microns to remove moisture and non-condensables.
2. Charge Refrigerant: Weigh in the correct factory-specified charge of R-410A. Use subcooling method for TXV systems as specified in the installation guide. Do not overcharge.
3. Electrical Check: Verify correct voltage at unit. Ensure fan rotates in correct direction (clockwise viewed from top).
4. System Start: Turn on power at disconnect. Set indoor thermostat to "Cool" mode and a temperature below room temp. Unit should start after a short time delay.
5. Performance Check: Measure superheat/subcooling, temperature drop across coil, and amp draws to confirm proper operation.

CAUTION! Never start the compressor without a proper refrigerant charge and airflow across the indoor coil.

Specifications

• Model: YCC024F-L
• Cooling Capacity: 24,000 BTU/H (2 Tons)
• SEER: Up to 17
• Refrigerant Type: R-410A
• Refrigerant Charge (Factory): See unit rating plate
• Electrical: 208/230V, 1 Phase, 60 Hz Minimum Circuit Ampacity: 15.0, Max Fuse/Breaker: 25
• Fan Motor: 1/5 HP, PSC
• Sound Level: Approximately 72 dB(A)
• Operating Ambient Temp Range: 55°F to 115°F
• Net Weight: Approximately 155 lbs

Controls and Settings

Primary control is via the indoor thermostat. Unit has internal safeties and a control board for operation.

Thermostat: Set to COOL, AUTO FAN, and desired temperature. Use programmable settings for efficiency.

Unit Control Board: Manages compressor short-cycle protection (typically 5-minute delay), fan operation, and safety lockouts.

Safety Controls:
- Low-Pressure Switch: Protects compressor from loss of charge.
- High-Pressure Switch: Protects from excessive pressure (internal to compressor).
- Compressor Thermal Overload: Internal protection.

No user-adjustable settings are located on the outdoor unit. All adjustments must be made via proper installation, charging, and thermostat configuration.

Connecting System Components

This is a split system requiring an indoor coil (evaporator) and air handler or furnace.

1. Indoor Unit: Must be an American Standard matched coil (e.g., TXC024S) or air handler for rated efficiency.
2. Lineset: Use clean, dry, dehydrated copper tubing. Recommended size: 3/8" liquid line, 3/4" suction line (for runs up to 50 ft). Insulate suction line.
3. Electrical: Run high-voltage power and low-voltage control wire (minimum 18 AWG, 3-conductor) between indoor and outdoor units.
4. Thermostat: Connect to indoor unit control board (R, C, Y, G terminals).

Tip: Always refer to the detailed installation instructions provided with the indoor unit for specific wiring and piping diagrams.

Operation & Maintenance

For normal operation, set thermostat. Maintenance should be performed annually by a professional.

1. Seasonal Startup: Remove any winter cover. Clear debris from around unit. Ensure condenser coil is clean.
2. Routine Operation: Unit cycles automatically based on thermostat demand. The compressor has a built-in time delay between cycles.
3. Professional Annual Service Includes:
   - Inspect and clean condenser coil (from inside out with water).
   - Check refrigerant charge via subcooling.
   - Inspect electrical connections for tightness.
   - Check amp draws on compressor and fan motor.
   - Inspect fan motor and blades.
   - Check and clear drain line.
4. Owner Maintenance: Keep area around unit clear (2 ft minimum). Gently rinse exterior coil fins with a garden hose if dirty. Do not use a pressure washer.

WARNING! Disconnect all power before performing any maintenance. The fan can start automatically. Coil fins are sharp.

Diagnostics & Alerts

This unit does not have a diagnostic LED code board. Troubleshooting requires HVAC gauges and a multimeter.

Common System Status Indicators:
- Unit Not Running: Check thermostat setting, power at disconnect, indoor unit service switch, and time delay.
- Fan Running, Compressor Not Running: Possible low pressure lockout, faulty capacitor, or compressor issue.
- Short Cycling: Could indicate overcharge, undercharge, restricted airflow, or faulty pressure switch.

For accurate diagnosis, contact a qualified service technician.

Care & Cleaning

Disconnect power at the outdoor disconnect switch before cleaning.

1. Exterior Coil: Remove top grille (WeatherGuard). Use a soft brush or low-pressure water spray from the inside of the coil to flush dirt outward. Straighten any bent fins with a fin comb.
2. Fan & Blades: Inspect for cracks or damage. Clean debris.
3. Cabinet: Wipe down with a damp cloth. Do not use harsh chemicals or abrasive cleaners.

CAUTION! Do not spray electrical components (contactor, capacitor, wiring) directly with water. Allow unit to dry completely before restoring power.

Regulatory Information

This product complies with applicable U.S. safety and performance standards. It contains R-410A refrigerant, which has zero ozone depletion potential but is a potent greenhouse gas. Federal law requires that refrigerant be recovered by an EPA-certified technician during service or disposal. The scroll compressor is protected under patents. Manufactured for residential use. For technical support or warranty service, contact your installing American Standard dealer or visit www.americanstandardair.com.

Troubleshooting

Reset: Turn off power at the disconnect for 5 minutes, then restore. This may reset internal lockouts.

Service: Contact your authorized American Standard dealer. For product information: www.americanstandardair.com.