American Standard HVAC Odyssey TTA0724 A Manual

The American Standard HVAC Odyssey TTA0724 A is a high-efficiency air conditioning unit designed for residential and light commercial applications. It features advanced compressor technology, durable corrosion-resistant components, a comprehensive control system, and meets stringent energy efficiency standards. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: High-efficiency scroll compressor, CorrosionGuard™ protection, Sound insulation system, Weather-resistant cabinet, Service access valves, Liquid line filter-drier.

Feature	Description
Compressor	High-efficiency scroll compressor for reliable performance
Corrosion Protection	CorrosionGuard™ coating on coil and cabinet
Sound Rating	Low operational sound levels for quiet performance
Cabinet	Galvanized steel with baked-on powder paint
Refrigerant	R-410A, environmentally responsible
Electrical Connections	Weather-tight connection box
Service Valves	Front-access service valves for easy maintenance
Filter-Drier	Liquid line filter-drier for system protection
Coil Design	Enhanced surface coil for optimal heat transfer
Warranty	Limited warranty on compressor and parts

Installation

Unpack and inspect contents. Select a suitable outdoor location.

Prepare the site: Level, stable pad with proper clearance (min 24" on sides, 48" front, 12" top).
Set the unit: Place on pad, ensure unit is level.
Connect refrigerant lines: Braze connections following proper procedures; evacuate and charge system.
Connect electrical: Run power from disconnect to unit; connect per wiring diagram.
Connect condensate drain: Ensure proper drainage away from unit.

WARNING! Installation must be performed by a qualified HVAC technician. Follow all local codes and safety procedures. Disconnect all power before servicing.

First-Time Setup & Startup

After installation, perform initial startup and system check.

Verify installation: Check all connections, refrigerant charge, and electrical.
Set thermostat: Install compatible thermostat and configure for cooling operation.
Power on: Restore power at disconnect and indoor unit.
Start system: Set thermostat to cool mode, temperature below room temp.
Check operation: Verify compressor and fan operation, listen for abnormal noises.
Measure performance: Check temperature drop across evaporator coil and system pressures.

CAUTION! Do not operate without proper refrigerant charge. Ensure fan guard is secure before powering.

Specifications

Model: TTA0724 A
Cooling Capacity: 2 Tons (24,000 BTU/H)
SEER Rating: Up to 16 SEER
Refrigerant: R-410A
Electrical Data: 208/230V, 1 Phase, 60 Hz
Compressor Type: Scroll
Fan Motor: Permanent Split Capacitor (PSC)
Operating Ambient Temp: 55°F to 115°F
Sound Level: As low as 72 dB
Dimensions (LxWxH): Approx. 31" x 31" x 26"
Net Weight: Approx. 150 lbs

Controls and Settings

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

Thermostat Settings: Mode (Cool, Off, Fan), Temperature Setpoint, Fan (Auto, On).

Unit Controls: High and low-pressure switches, compressor overload protector, fan cycle control, time delay relay (prevents short cycling).

LED Status Light (on control board): Steady = normal operation. Flashing = fault condition (refer to code chart in service panel).

Connecting to Thermostat & Ductwork

Indoor Unit (Furnace/Air Handler): Connect low-voltage control wires (R, C, Y, G, O/B, etc.) per wiring diagram. Ductwork: Ensure supply and return ducts are properly sized, sealed, and insulated.

Turn off power to indoor and outdoor units.
Connect thermostat wires at air handler and outdoor unit terminal block.
Ensure duct connections are airtight using mastic or approved tape.
Install clean air filter in return air duct or air handler.

Tip: Use a thermostat compatible with single-stage cooling. Verify wire connections match diagram exactly.

Operation Modes

Operates via thermostat signal for cooling and fan control.

Cooling Mode: Thermostat calls for cooling (Y and G energized). Compressor and outdoor fan start. Indoor blower starts.
Fan Only Mode: Thermostat calls for fan only (G energized). Indoor blower runs continuously or as timed by thermostat.
Off Mode: No call from thermostat. System is idle.
Automatic Fan: Fan runs only when there is a call for cooling.
Continuous Fan: Fan runs constantly for air circulation (selected at thermostat).

WARNING! Do not operate in cooling mode when outdoor temperature is below 55°F. This can cause liquid floodback and compressor damage.

Maintenance Schedule

Homeowner (Monthly): Inspect/clean/replace air filter. Ensure outdoor unit is clear of debris.

Professional Technician (Annually): Inspect refrigerant charge, clean condenser coil, check electrical connections, lubricate bearings if applicable, check system pressures and temperatures, inspect drain line.

Care & Cleaning

Outdoor Unit: Turn off power. Remove debris (leaves, grass) from around unit. Gently clean condenser coil fins with a soft brush or low-pressure water from the inside out. Straighten any bent fins with a fin comb.

Indoor Unit/Air Filter: Replace disposable filter or clean permanent filter according to manufacturer instructions.

CAUTION! Do not use a pressure washer on the coil. Do not clean coil with acidic solutions. Keep electrical components dry.

Regulatory Information

This equipment is designed to comply with applicable UL and CSA standards. The refrigerant circuit contains R-410A. Federal law requires that refrigerant be recovered by an EPA-certified technician. This product may be covered by one or more U.S. patents. For warranty information, see the warranty certificate included with the unit or contact your dealer. For technical support, contact American Standard Heating & Air Conditioning at 1-800-428-4323 or visit www.americanstandardair.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not start	Power loss, thermostat setting, time delay	Check disconnect and breaker. Verify thermostat is set to COOL below room temp. Wait 5 minutes for time delay.
Unit runs but no cooling	Dirty filter, blocked coil, low refrigerant	Replace air filter. Clear debris from outdoor coil. Call technician to check charge.
Unit cycles on/off frequently	Dirty filter/coil, oversized unit, high head pressure	Clean filter and coil. Check for restricted airflow. Call technician.
Ice on refrigerant lines/coil	Low airflow, low refrigerant	Turn system off. Check/replace filter. Ensure vents are open. Call technician when thawed.
Unusual noise	Loose parts, debris in fan, failing motor	Turn off power. Check for loose panels, screws. Remove debris from fan. Call technician.
Water leak indoors	Clogged condensate drain	Clear drain line and trap. Ensure drain pan is not cracked.

Reset: If unit locks out on fault, turn thermostat to OFF, turn off power at disconnect for 30 seconds, then restore power and turn thermostat to COOL.

Service: For all refrigerant and electrical issues, contact a qualified HVAC technician. 1-800-428-4323; www.americanstandardair.com