Trane XV90 Furnace Manual

The Trane XV90 is a high-efficiency gas furnace featuring variable-speed technology, two-stage heating operation, Comfort-R technology for consistent temperatures, quiet operation, durable heat exchanger construction, diagnostic LED light, and compatibility with Trane thermostats. 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 Thermostat 7. Operation 8. Maintenance 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Variable-speed blower motor, two-stage gas valve, Comfort-R technology, diagnostic LED, durable Climatuff compressor, insulated cabinet.

FeatureDescription
Variable-speed technologyAdjusts airflow for optimal comfort and efficiency
Two-stage heatingProvides low and high heat stages for temperature consistency
Comfort-R technologyReduces temperature swings and maintains consistent comfort
Diagnostic LEDProvides status codes for troubleshooting
Climatuff compressorDurable construction for long-lasting performance
Insulated cabinetReduces operating noise
Gas valveTwo-stage operation for efficient heating
Blower motorVariable-speed ECM motor for quiet operation
Heat exchangerDurable stainless steel construction
Filter systemStandard 1-inch or 4-inch media filter compatibility

Installation

Unpack and inspect contents. Ensure proper location and clearances.

  1. Location selection: Choose area with proper clearances and ventilation.
  2. Gas connection: Connect gas line with proper shutoff valve.
  3. Electrical connection: Connect 120V power supply with proper grounding.
  4. Vent system: Install proper PVC venting for high-efficiency operation.
  5. Drain connection: Connect condensate drain line for proper drainage.
  6. Ductwork: Connect supply and return ducts securely.

WARNING! Installation must be performed by qualified HVAC technician. Follow all local codes and manufacturer specifications.

First-Time Setup

Power on furnace; follow startup procedure.

  1. Gas line check: Verify gas connections are tight and leak-free.
  2. Electrical check: Ensure proper voltage and grounding.
  3. Vent system: Verify proper venting and air intake.
  4. Thermostat connection: Connect compatible Trane thermostat.
  5. Initial startup: Follow lighting instructions for first-time operation.
  6. System check: Verify proper operation through complete heating cycle.

CAUTION! Only qualified technicians should perform initial setup and startup procedures.

Specifications

Controls and Settings

Access controls via integrated control board and compatible thermostat.

Control Board: Diagnostic LED, DIP switches for configuration, status lights.

Thermostat Settings: Heat mode, fan control, temperature setpoints, schedule programming. Blower Settings: Variable-speed adjustment, airflow configuration. Gas Valve: Two-stage operation (low/high fire). Diagnostic Codes: LED flash patterns indicate system status and error codes.

Connecting Thermostat

Compatible with Trane thermostats and most standard thermostats.

  1. Turn off power to furnace before connecting thermostat.
  2. Run thermostat wires from furnace to thermostat location.
  3. Connect wires to appropriate terminals (R, W, G, Y, C).
  4. Configure thermostat for two-stage heating operation.
  5. Restore power and test operation.

Tip: Use compatible Trane thermostat for optimal performance and features.

Operation

Two-stage heating with variable-speed blower operation.

  1. Normal operation: Thermostat calls for heat, furnace ignites in low stage.
  2. Stage transition: If needed, system transitions to high stage for additional heat.
  3. Blower operation: Variable-speed motor adjusts airflow for optimal comfort.
  4. Shutdown: When thermostat satisfied, gas valve closes and blower continues for heat dissipation.
  5. Fan only: Thermostat can operate blower independently for air circulation.

WARNING! Do not attempt to adjust gas valve or electrical settings without proper training.

Maintenance

Regular maintenance ensures optimal performance and efficiency.

  1. Filter replacement: Replace filter every 1-3 months depending on usage.
  2. Annual inspection: Have qualified technician perform annual maintenance.
  3. Burner inspection: Clean and inspect burners annually.
  4. Heat exchanger: Inspect for cracks or damage during annual service.
  5. Blower maintenance: Clean blower assembly and check motor operation.
  6. Drain system: Clear condensate drain line and trap regularly.

Care & Cleaning

Turn off power before cleaning. Keep area around furnace clear and clean.

CAUTION! Do not use water or cleaning solvents on electrical components. Keep combustion area clear of debris.

Regulatory Information

UL certified for safety standards. Complies with ANSI Z21.47 standards for gas furnaces. Manufactured to meet or exceed industry standards for efficiency and performance. For support, visit www.trane.com or contact 1-800-554-6413.

Troubleshooting

SymptomPossible CauseCorrective Action
Furnace won't startPower, thermostat, gas supplyCheck power switch, thermostat settings, gas valve position.
No heatPilot, gas supply, filterCheck for ignition, verify gas supply, replace dirty filter.
Short cyclingFilter, thermostat, limit switchClean/replace filter, check thermostat location, verify limit switch.
Blower not workingPower, motor, capacitorCheck power to blower, test motor, check capacitor.
Unusual noisesBlower, motor, ductworkInspect blower wheel, check motor bearings, examine duct connections.

Reset: Turn power off for 30 seconds then restore if lockout occurs.

Service: 1-800-554-6413; www.trane.com

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