American Standard HVAC 5A7A5018A Manual

The American Standard 5A7A5018A is a high-efficiency air conditioner condenser unit designed for residential use, featuring a single-stage scroll compressor, corrosion-resistant coil, and sound-reducing fan. It is compatible with American Standard matched indoor units for optimal performance. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: Scroll compressor, louvered coil guard, sound-reducing top, service valves, electrical disconnect.

Feature	Description
Scroll Compressor	Provides quiet, reliable, and efficient operation
Corrosion-Resistant Coil	Coated coil for extended life in harsh environments
Sound-Reducing Fan	Quiet outdoor operation
Louvers and Top	Protects coil from debris and reduces sound
Service Valves	For refrigerant line connection and service
Electrical Disconnect	Required external disconnect for safety
High/Low Pressure Ports	For system diagnostics and charging
Drain Connection	For condensate removal (on some matched indoor units)
R-410A Refrigerant	Environmentally responsible refrigerant
Matched System	Designed for optimal performance with American Standard indoor units

Installation

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

Select Location: Choose a level area with adequate airflow and clearance (min 24 inches on all sides).
Set Pad: Place on a solid, level concrete or composite pad.
Connect Refrigerant Lines: Braze lines to service valves following proper procedures.
Connect Electrical: Run high-voltage power to the disconnect, then to unit terminals (L1, L2). Connect low-voltage control wiring from indoor unit.
Evacuate and Charge: Evacuate system to 500 microns, then charge with R-410A to specified subcooling.

WARNING! Installation must be performed by a qualified HVAC technician. Incorrect installation can cause injury, property damage, or equipment failure.

First-Time Setup

After installation, perform initial startup and system check.

Power On: Ensure indoor unit power is on. Turn on outdoor disconnect.
System Check: Thermostat should call for cooling. Verify condenser fan and compressor start.
Verify Airflow: Check indoor unit airflow and temperature drop (typically 15-20°F).
Check Pressures: Verify high and low side refrigerant pressures are within specified range.
Set Thermostat: Program desired cooling setpoints and schedules.

CAUTION! Do not operate without proper refrigerant charge. Ensure all electrical connections are tight and correct.

Specifications

Model: 5A7A5018A
Cooling Capacity: 1.5 Tons (18,000 BTU/h)
SEER Rating: Up to 16 SEER (with matched indoor unit)
Refrigerant: R-410A
Electrical Data: 208/230V, 1 Phase, 60 Hz
Compressor: Single-stage scroll
Fan Motor: Permanent split capacitor (PSC)
Operating Ambient: 55°F to 115°F
Sound Rating: As low as 72 dB
Dimensions (approx.): 31" H x 31" W x 31" D
Shipping Weight: Approx. 180 lbs

Controls and Settings

Primary control is via the indoor thermostat. Unit has internal safeties and controls.

Thermostat Control: ON/OFF, Mode (Cool/Auto/Off), Fan (Auto/On), Temperature Setpoint.

Unit Components: Compressor contactor, fan relay, high/low pressure switches, compressor overload, run capacitor.

No User-Adjustable Settings: All operational settings (fan speed, pressure limits) are factory set. Service technician can check dip switches (if present) for optional accessories.

Connecting to Indoor Unit

This unit must be connected to a matched American Standard indoor coil/furnace or air handler.

Turn off all power to indoor and outdoor units.
Connect Refrigerant Lines: Connect liquid and vapor lines between outdoor service valves and indoor coil.
Connect Control Wires: Typically a 2-wire (24V) connection from indoor unit to terminals on the outdoor unit control board.
Connect Power: High-voltage power from disconnect to L1 & L2 terminals.

Tip: Refer to the indoor unit installation manual for specific wiring and piping requirements.

Operation

Operation is controlled by the indoor thermostat.

Cooling Cycle: When thermostat calls for cooling, it sends 24V signal to outdoor unit, engaging contactor. Compressor and fan start.
Cycle Off: When setpoint is reached, thermostat breaks 24V signal, stopping compressor and fan.
Fan Operation: Indoor fan runs as dictated by thermostat setting (AUTO or ON).
Safety Shutdown: Internal pressure switches or overloads will shut down unit if unsafe conditions occur. Unit may auto-restart after a delay once condition is corrected.

WARNING! Do not attempt to operate if unusual noises, smoke, or burning smells are present. Turn off power and call for service.

Maintenance

Regular maintenance is required for efficiency and longevity. Some tasks are user-friendly; others require a technician.

Homeowner Tasks (Seasonally):

Keep area around unit clear of leaves, grass, and debris (min 24 inches).
Gently rinse outdoor coil with a garden hose (from the inside out) to remove dirt. Ensure power is OFF.
Ensure the indoor filter is clean (check monthly).

Technician Tasks (Annually):

Check refrigerant charge and system pressures.
Inspect electrical connections and components.
Check fan motor and blades.
Clean coil thoroughly if needed.
Verify proper operation of all safeties and controls.

Care & Cleaning

Turn off power at the disconnect before any cleaning.

Exterior: Wipe cabinet with a damp cloth. Do not use harsh chemicals or pressure washers.
Coil: Remove top grille (if serviceable) and gently clean coil fins with a soft brush or low-pressure water flow. Straighten any bent fins with a fin comb.
Drainage: Ensure condensate drain from indoor unit is clear.

CAUTION! Do not spray water directly into electrical components or fan motor. Do not clean while unit is operating.

Regulatory Information

This product complies with applicable U.S. safety and performance standards. It contains R-410A refrigerant. Federal law requires that refrigerant recovery be performed by certified technicians. The coil contains aluminum and copper. For recycling or disposal, consult local regulations. Manufactured for residential use. For support, visit www.americanstandardair.com or contact your local American Standard dealer.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not start	No power, tripped breaker, thermostat issue	Check disconnect and breakers. Verify thermostat settings and batteries. Call for service if power is present.
Fan runs, compressor does not	Low refrigerant, faulty capacitor, internal overload	Turn off power and call for service. Do not attempt to reset internal safeties.
Reduced cooling	Dirty filter, dirty coil, low refrigerant	Replace indoor air filter. Clean outdoor coil (power off). If problem persists, call for service.
Unit cycles on/off rapidly	Dirty filter, blocked airflow, faulty sensor	Replace filter. Ensure vents are open. Call for service.
Ice on refrigerant lines or coil	Low airflow, low refrigerant	Turn system OFF. Check/replace filter. Call for service to check charge.
Unusual noise	Loose part, debris in fan, failing motor	Turn off power. Visually inspect for debris. Call for service.

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

Service: Contact your local American Standard dealer or visit www.americanstandardair.com. For warranty service, contact installing contractor.