American Standard HVAC Odyssey TTA Series Manual

The American Standard Odyssey TTA Series is a high-efficiency, variable-speed air handler designed for use with compatible heat pumps and air conditioners. It features advanced humidity control, quiet operation, durable construction, and compatibility with communicating thermostats for enhanced system performance and comfort. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Variable-speed ECM blower motor, insulated cabinet, integrated control board, filter rack, drain pan, and connection terminals for thermostat and outdoor unit.

Installation

Unpack and inspect contents. Ensure installation location meets clearance requirements.

1. Select Location: Choose a level, indoor area with proper service clearance (minimum 24 inches front access).
2. Position Unit: Install in upflow, downflow, or horizontal position per application requirements.
3. Connect Ductwork: Secure supply and return ducts using appropriate sealing methods.
4. Electrical Connections: Connect line voltage per wiring diagram (208/230V, 1-phase). Connect low-voltage thermostat wires.
5. Condensate Drain: Install primary and auxiliary drain lines with proper trap and slope.
6. Connect to Outdoor Unit: Run refrigerant lineset and connect control wiring to compatible heat pump/AC.

WARNING! Installation must be performed by a qualified HVAC technician in accordance with all local codes and the National Electrical Code. Disconnect all power before servicing.

First-Time Setup & Commissioning

Power on system; configure settings via compatible communicating thermostat.

1. System Power: Restore electrical power to indoor and outdoor units.
2. Thermostat Configuration: Follow thermostat prompts to set system type (Heat Pump), stages, and fan control.
3. Blower Settings: Default CFM settings are programmed. Adjust airflow via thermostat setup menu if required for specific application.
4. Test Operation: Initiate test modes for cooling, heating, and fan-only to verify correct operation.
5. Check Drainage: Verify condensate drain is flowing properly.
6. Final Inspection: Ensure all access panels are secured and area is clean.

CAUTION! Do not jumper R to G to run blower continuously during commissioning. Use thermostat fan settings.

Specifications

• Model Series: TTA (e.g., TTA030, TTA036, TTA042, TTA048, TTA060).
• Voltage: 208/230V, 1-Phase, 60 Hz.
• Motor Type: Electronically Commutated Motor (ECM).
• Airflow Range: Adjustable, typical range 350-1400 CFM depending on model and static pressure.
• Maximum External Static Pressure: 0.8 in. w.c.
• Cabinet: Galvanized steel with baked enamel finish.
• Insulation: 1" thick foam insulation on all interior panels.
• Filter Type: Accommodates standard 1" throw-away or 4" media filter (not included).
• Refrigerant Connections: Liquid and vapor line ports (field supplied).
• Communications: Compatible with American Standard AccuLink® communicating thermostats.
• Operating Ambient Temperature: 45°F to 110°F (indoor).

Controls and Settings

Primary control is via the system thermostat. Integrated control board manages blower operation.

Thermostat Functions: System Mode (Off, Heat, Cool, Auto, Emergency Heat), Fan (Auto, On, Circulate), Temperature Setpoint, Humidity Setpoint (if equipped), System Status, Alerts.

Control Board LED: Steady green = normal operation. Flashing codes indicate specific status or fault conditions (see Troubleshooting).

Blower Speed Settings: Default cooling/heating CFM is set for matched system. Can be adjusted via compatible thermostat installer setup menu for custom applications (e.g., high static ductwork).

Dehumidification Mode: Activated automatically by communicating thermostat during cooling calls to reduce humidity.

Connecting to System Components

Outdoor Unit: Connect low-voltage control wires (Y, O/B, C, etc.) and refrigerant lines. Thermostat: Connect communicating wires (typically 4-wire). Power: Connect line voltage (L1, L2, Ground). Drain: Connect 3/4" PVC condensate line.

1. Turn off all power at disconnect and breaker panel.
2. Match wires to terminal labels on control board (R, C, Y, O/B, etc.).
3. Ensure refrigerant lines are properly sized, insulated, and leak-checked.
4. Select correct system mode on thermostat (Heat Pump).

Tip: Refer to the outdoor unit and thermostat installation manuals for specific wiring diagrams and compatibility.

Operation Modes

Operates with compatible heat pump for cooling and heating.

1. Cooling Mode: Thermostat calls for cooling. Blower operates at cooling CFM. Dehumidification may activate.
2. Heating Mode: Thermostat calls for heating. Blower operates at heating CFM (typically lower than cooling).
3. Emergency Heat Mode: Uses backup heat strips (if installed) instead of heat pump.
4. Fan-Only Mode: Blower circulates air without heating or cooling. Options: ON (continuous), AUTO (with cycle), CIRCULATE (intermittent).
5. Dehumidification Mode: Blower runs at lower speed during cooling call to enhance moisture removal.
6. System Shutdown: Thermostat set to OFF. Control board remains powered for potential communication.

WARNING! Do not operate the system without a properly installed air filter. Restricted airflow can damage the unit.

Maintenance & Filter Replacement

Regular maintenance is required for optimal performance and longevity.

1. Filter: Inspect monthly. Replace 1" filter or clean/replace 4" media filter as needed (typically every 3 months). Slide filter out of rack, insert new one noting airflow direction arrow.
2. Blower Compartment: Annually, inspect blower wheel for debris and motor for free operation. (Power OFF).
3. Drain System: Annually, check condensate drain line and pan for algae or blockage. Flush with approved cleaner.
4. Electrical Connections: Annually (by technician), check tightness of line and low-voltage connections.
5. General Inspection: Visually inspect cabinet, insulation, and ducts for damage.

CAUTION! Always turn off electrical power at the breaker before performing any maintenance inside the unit.

Care & Cleaning

Exterior: Wipe cabinet with a soft, damp cloth. Do not use harsh chemicals or abrasives.

CAUTION! Do not spray water or cleaners into electrical compartments, control board, or motor. Do not attempt to lubricate the ECM motor.

Regulatory Information

This product complies with applicable U.S. safety and performance standards. It is designed for use in the United States and Canada. The ECM motor complies with U.S. Department of Energy regulations for energy efficiency. For technical support or to locate a dealer, visit www.americanstandard.com or contact American Standard Customer Care at 1-800-526-2200.

Troubleshooting

Reset: Power cycle unit (turn breaker off for 30 seconds, then on). If problem persists, call for service.

Service: Contact a qualified American Standard dealer. For support: 1-800-526-2200; www.americanstandard.com