American Standard HVAC Odyssey TWA0724 D Manual

The American Standard HVAC Odyssey TWA0724 D is a high-efficiency residential air conditioning unit designed for reliable cooling performance. This manual covers safety guidelines, installation procedures, operation instructions, maintenance schedules, troubleshooting, and technical specifications to ensure proper setup and long-term operation of your system.

1. Features at a Glance 2. Installation Requirements 3. First-Time Startup 4. Technical Specifications 5. Controls and Operation 6. Wiring and Connections 7. Maintenance Procedures 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting Guide

Features at a Glance

Key components: High-efficiency scroll compressor, corrosion-resistant coil, weather-resistant cabinet, integrated service valves, and low ambient cooling capability.

Feature	Description
Compressor Type	High-efficiency scroll compressor for quiet operation
Refrigerant	R-410A environmentally friendly refrigerant
SEER Rating	Up to 16 SEER for energy efficiency
Cabinet Construction	Galvanized steel with powder coat finish
Coil Design	Enhanced surface coil for optimal heat transfer
Sound Level	Reduced operational noise with sound blanket
Service Valves	Front-facing for easy access
Electrical Connections	Weather-tight electrical compartment
Drain Connection	Standard 3/4" PVC connection
Warranty	Limited 10-year parts warranty

Installation Requirements

Proper installation is critical for optimal performance and safety.

Location Selection: Choose level, stable ground with adequate clearance (minimum 24" on all sides).
Pad Preparation: Install on concrete pad or approved mounting system.
Refrigerant Lines: Connect properly sized copper lines with insulation.
Electrical Connection: Connect to dedicated circuit with proper disconnect.
Condensate Drain: Install proper drainage system away from foundation.

WARNING! Installation must be performed by qualified HVAC technician. Improper installation can cause injury or equipment damage.

First-Time Startup

Follow these steps for initial system startup.

Pre-Start Check: Verify all electrical connections are tight and secure.
Refrigerant Charge: Check and adjust refrigerant charge per manufacturer specifications.
Airflow Verification: Ensure proper airflow through indoor coil and ductwork.
System Test: Start system and verify proper cooling operation.
Thermostat Setup: Program thermostat for desired temperature settings.

CAUTION! Do not operate system without proper refrigerant charge. Monitor pressures during initial operation.

Technical Specifications

Model: TWA0724 D
Cooling Capacity: 24,000 BTU (2 tons)
Voltage: 208/230V, 1 phase
Minimum Circuit Ampacity: 15 amps
Maximum Overcurrent Protection: 25 amps
Refrigerant Type: R-410A
Refrigerant Charge: Factory charged for 25' lineset
Operating Temperature Range: 55°F to 115°F ambient
Sound Rating: 72 dB(A) at 3 feet
Dimensions: 31" H x 31" W x 31" D
Shipping Weight: 185 lbs

Controls and Operation

System operation is controlled through compatible thermostat.

Thermostat Functions: COOL, HEAT (with compatible furnace), FAN (AUTO/ON), TEMPERATURE SETTING, SYSTEM ON/OFF.

Operating Modes: Cooling mode activates compressor and outdoor fan. Fan control can be set to AUTO (cycles with cooling) or ON (continuous operation). Temperature differential is typically 2°F. Compressor has minimum off-time protection (3 minutes). System includes high and low pressure switches for protection.

Wiring and Connections

Electrical connections must comply with local codes and NEC requirements.

Disconnect Power: Turn off power at main panel before servicing.
Line Voltage: Connect L1 and L2 to contactor terminals.
Low Voltage: Connect thermostat wires to appropriate terminals.
Grounding: Ensure proper equipment grounding.
Weatherproofing: Seal all electrical connections against moisture.

Tip: Use copper conductors only. Aluminum wiring requires special connectors.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Monthly: Check air filter (indoor unit) and clean if dirty.
Seasonal: Clean outdoor coil with gentle water spray (power off).
Annual Professional Service: Includes refrigerant check, electrical inspection, coil cleaning, and component testing.
Winter Preparation: Install cover if unit will be idle during freezing temperatures.
Component Inspection: Check fan motor, capacitor, and contactor annually.

WARNING! Always disconnect power before performing any maintenance. Do not use high-pressure water on coils.

Safety Features

High Pressure Switch: Protects against excessive discharge pressure. Low Pressure Switch: Prevents operation with low refrigerant charge. Compressor Overload: Thermal protection for motor windings. Time Delay: Prevents short cycling (3-minute minimum off time). Disconnect Requirement: NEC requires disconnect within sight of unit.

Care & Cleaning

Keep unit clear of debris and vegetation. Clean outdoor coil annually with garden hose (nozzle setting: shower). Straighten bent fins with fin comb. Keep indoor filter clean for proper airflow.

CAUTION! Never use sharp objects to clean coils. Do not use chemical cleaners unless specified by manufacturer.

Regulatory Information

UL Listed: Meets UL Standard 1995. AHRI Certified: Performance certified per AHRI Standard 210/240. EPA Compliance: Uses R-410A refrigerant with zero ozone depletion potential. All materials comply with RoHS directives. For technical support, contact American Standard at 1-800-628-4400 or visit www.americanstandardair.com.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Unit not running	Power loss, thermostat setting, safety lockout	Check circuit breaker, verify thermostat settings, wait 3 minutes for reset
Poor cooling performance	Dirty filter, low refrigerant, restricted airflow	Clean/replace filter, check refrigerant charge, clear obstructions
Unit cycles on/off frequently	Dirty coil, improper charge, oversized unit	Clean coils, check charge, verify proper sizing
Unusual noises	Loose parts, debris in fan, failing motor	Tighten hardware, clear debris, inspect motor bearings
Ice on refrigerant lines	Low airflow, low refrigerant charge	Check filter and indoor coil, verify proper charge

Reset Procedure: Turn thermostat off for 5 minutes, then restart.

Service: 1-800-628-4400; www.americanstandardair.com