American Standard HVAC TVF018A14 Manual

The American Standard TVF018A14 is a high-efficiency variable-speed air handler designed for use with compatible heat pump and air conditioning systems. It features advanced humidity control, quiet operation, multiple airflow settings, compatibility with communicating thermostats, durable construction, and easy service access. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

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

Features at a Glance

Key components: Variable-speed ECM blower motor, Control board with diagnostic LEDs, Air filter compartment, Drain pan with safety switch, Electrical access panel, Low-voltage terminal strip.

Feature	Description
Variable-speed ECM motor	Provides precise airflow control and energy efficiency
Communicating capability	Works with American Standard AccuLink® communicating thermostats
Advanced humidity control	Automatically adjusts fan speed for optimal dehumidification
Quiet operation	Insulated cabinet and variable-speed technology reduce noise
Multiple airflow settings	Configurable for different system requirements
Durable construction	Galvanized steel cabinet with corrosion-resistant coating
Easy service access	Removable panels for filter changes and maintenance
Diagnostic LEDs	Visual indicators for system status and troubleshooting
Drain pan safety switch	Shuts off system if condensate drain becomes blocked
Universal mounting	Designed for horizontal or vertical installation

Installation

Unpack and inspect contents. Ensure proper location with adequate clearance.

Select installation location: Provide minimum 24-inch service clearance in front of unit.
Mount unit: Secure to floor or platform using appropriate fasteners for horizontal or vertical configuration.
Connect ductwork: Seal all connections with approved duct sealant to prevent air leakage.
Connect electrical: Follow local codes; connect to dedicated circuit with proper disconnect.
Connect condensate drain: Use proper slope (1/4 inch per foot) to ensure drainage.

WARNING! Installation must be performed by qualified HVAC technician. Disconnect all power before servicing.

First-Time Setup

Power on unit; configure settings for your specific application.

Configure airflow: Set dip switches on control board for required CFM based on system capacity.
Set thermostat type: Configure for conventional or communicating thermostat operation.
Test operation: Run system through all modes to verify proper function.
Configure humidity control: Set desired humidity level if using dehumidification feature.
Verify safety switches: Test drain pan overflow switch and high-pressure cutout.

CAUTION! Ensure all electrical connections are tight and properly insulated.

Specifications

Model: TVF018A14
Nominal Airflow: Up to 1800 CFM
Motor Type: Variable-speed ECM
Electrical: 208/230V, 1 Phase, 60 Hz
Maximum FLA: 7.8 Amps
Control Voltage: 24V AC
Cabinet: Galvanized steel with baked enamel finish
Filter Size: 16x25x1 inch (standard)
Sound Level: As low as 4.5 Sones
Operating Temp Range: 45°F to 120°F
Compatibility: Works with American Standard heat pumps and AC units up to 5 tons

Controls and Settings

Access control board via removable access panel. Control Board: DIP switches for configuration, Diagnostic LEDs, Low-voltage terminal strip.

DIP Switch Settings: SW1: Thermostat type (communicating/conventional), SW2: Airflow adjustment, SW3: Dehumidification settings, SW4: Fan delay options.

Airflow Configuration: Adjust for 350-1800 CFM based on tonnage. Humidity Control: Enable enhanced dehumidification for humid climates. Fan Delay: Set post-cool fan-off delay (0-180 seconds). Diagnostic LEDs: Green (power), Yellow (communication), Red (fault).

Connecting to Systems

Compatible with American Standard heat pumps and air conditioners. Thermostat: AccuLink® communicating or conventional 24V thermostats.

Turn off all power at disconnect before making connections.
Connect low-voltage wiring: Match colors to terminal strip (R, C, Y1, Y2, G, O/B, etc.).
Connect communicating thermostat: Use 4-wire cable for AccuLink® systems.
Connect to outdoor unit: Follow manufacturer's wiring diagram for specific model.

Tip: Use wire nuts or terminal blocks for secure connections. Label all wires for future service.

Operation Modes

Supports cooling, heating, fan-only, and dehumidification modes.

Cooling mode: Variable-speed operation for optimal comfort and efficiency.
Heating mode: Works with heat pump for efficient heating operation.
Fan-only mode: Continuous or intermittent circulation.
Dehumidification mode: Reduces fan speed during cooling for enhanced moisture removal.
Emergency heat: Works with auxiliary heat strips (if installed).
Quiet mode: Reduces maximum fan speed for ultra-quiet operation.
Turbo mode: Maximum airflow for rapid temperature changes.

WARNING! Do not operate without proper filtration. Ensure condensate drain is clear before operation.

Maintenance Features

Filter Monitoring: Some models track filter runtime and alert when replacement needed. Self-Diagnostics: Control board monitors system and stores fault codes. Easy Access: Removable panels for filter changes and component inspection.

Care & Cleaning

Disconnect power before maintenance. Clean exterior with damp cloth. Replace filters regularly (1-3 months).

CAUTION! Do not use water or cleaning solutions on electrical components. Keep area around unit clear of debris.

Regulatory Information

UL Listed: Meets UL 1995 standards for heating and cooling equipment. AHRI Certified: Performance certified by Air-Conditioning, Heating, and Refrigeration Institute. Meets DOE efficiency standards. For support, visit www.americanstandardair.com or contact 1-800-628-4516. Copyright © American Standard Heating & Air Conditioning.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not running	Power disconnect, blown fuse	Check disconnect switch; verify fuses/breakers; check control voltage.
No airflow	Blocked filter, motor issue	Replace dirty filter; check for obstructions; verify motor operation.
Poor cooling/heating	Dirty coils, low airflow	Clean evaporator coil; verify proper airflow setting; check refrigerant charge.
Water leakage	Clogged drain line	Clear condensate drain line; check drain pan for cracks; ensure proper slope.
Unusual noise	Loose components, bearing wear	Tighten all fasteners; check motor bearings; inspect blower wheel.
Diagnostic LED flashing	System fault	Count flashes and refer to fault code chart in service manual.

Reset: Turn power off for 30 seconds, then restore to reset control board.

Service: 1-800-628-4516; www.americanstandardair.com