Trane XB80 Furnace Manual

The Trane XB80 is a high-efficiency gas furnace featuring 80% AFUE rating, single-stage operation, durable heat exchanger, multi-speed blower motor, electronic ignition system, built-in draft inducer, safety controls, and compatibility with standard thermostats. Designed for residential heating applications with natural gas or propane capability. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Durable aluminized steel heat exchanger, hot surface ignition, induced draft combustion system, multi-speed PSC blower motor, integrated control board, pressure switches, flame sensor, and limit controls.

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

1. Location: Install in approved locations with proper clearances and combustion air.
2. Venting: Use approved Category I vent materials; maintain proper slope and clearances.
3. Gas Supply: Connect to properly sized gas line with sediment trap and shutoff valve.
4. Electrical: Connect to 120V power with proper grounding and disconnect.
5. Ductwork: Ensure proper return and supply duct sizing and sealing.

WARNING! Gas furnaces produce carbon monoxide. Proper installation and venting are critical for safety.

First-Time Startup

Qualified technician must perform initial startup and commissioning.

1. Verify installation: Check all connections, clearances, and venting.
2. Gas pressure: Set manifold pressure to specifications (3.5" WC natural gas).
3. Electrical: Verify proper voltage and grounding.
4. Startup sequence: Power on, verify inducer operation, check ignition sequence.
5. Airflow: Set blower speeds for heating operation.
6. Combustion analysis: Verify proper combustion and vent operation.

CAUTION! Never operate furnace without proper venting and combustion air.

Technical Specifications

• AFUE Rating: 80%
• Input Capacity: 40,000 to 120,000 BTU/H (model dependent)
• Gas Type: Natural gas or propane (conversion kit required)
• Electrical: 120V, 60Hz, 1.5-6.0 amps (model dependent)
• Blower Motor: Multi-speed PSC, 1/3 to 1/2 HP
• Static Pressure: 0.1" to 0.8" WC maximum
• Venting: Category I, 4" to 6" diameter
• Sound Level: 65-75 dBA operating
• Dimensions: Varies by model (typically 21"W x 21"D x 40"H)
• Warranty: 20-year limited heat exchanger, 5-year parts

Controls and Settings

Integrated furnace control board with diagnostic LED, dip switch settings for blower speeds, and thermostat connections.

Control Board: LED status light (steady=normal, flashing=fault code), dip switches for heating/cooling speeds, terminal strip for thermostat wiring.

Blower Speeds: Adjust via dip switches for heating and cooling operation. Temperature Rise: Verify within 35-65°F range. Limit Controls: Auto-reset high temperature limits. Pressure Switches: Verify vent system operation. Flame Sensor: Monitors burner flame presence.

Venting and Combustion Air

Category I vent system required. Proper combustion air critical for safe operation.

1. Vent Materials: Use approved Category I vent pipe (B-vent or equivalent).
2. Vent Termination: Maintain proper clearances from windows, doors, and air intakes.
3. Combustion Air: Provide adequate combustion air per local codes.
4. Vent Slope: Maintain 1/4" per foot upward slope toward termination.

Tip: Never reduce vent size below furnace outlet size.

Operating Instructions

Normal operation controlled by thermostat. System cycles automatically.

1. Thermostat Setting: Set thermostat to desired temperature and HEAT mode.
2. Startup Sequence: Inducer motor starts, pressure switch verifies, igniter heats, gas valve opens.
3. Heating Cycle: Burners ignite, blower starts after warm-up delay.
4. Shutdown: Gas valve closes, inducer continues purge, blower runs during cool-down.
5. Filter Indicator: Check filter monthly; replace when dirty.

WARNING! If you smell gas, turn off gas supply immediately and call professional.

Maintenance Procedures

Annual professional maintenance recommended. Homeowner maintenance limited to filter changes.

1. Filter Replacement: Replace 1" filter monthly during heating season.
2. Visual Inspection: Check for obstructions, corrosion, or damage.
3. Professional Service: Annual cleaning of burners, heat exchanger, and flue passages.
4. Blower Maintenance: Clean blower wheel and motor annually.
5. Vent Inspection: Check vent system for obstructions or deterioration.

CAUTION! Turn off power and gas before any maintenance.

Safety Information

Carbon monoxide hazard. Install CO detectors near sleeping areas.

• Never block return or supply air registers
• Keep combustible materials away from furnace
• Install smoke and CO detectors in home
• Know the smell of natural gas (rotten eggs)
• Have fire extinguisher available
• Post emergency shutoff procedures

Regulatory Compliance

UL listed. ANSI Z21.47/CSA 2.3 compliant. Meets U.S. Department of Energy efficiency standards. Manufactured to comply with applicable safety and performance standards. For technical support, contact Trane Residential at 1-800-945-5884 or visit www.trane.com.

Troubleshooting Guide

Reset Procedure: Turn thermostat off, turn furnace power off for 30 seconds, restore power.

Service: 1-800-945-5884; www.trane.com