Luxaire Furnace Manual Download

The Luxaire Furnace is a high-efficiency heating system designed for residential use, featuring advanced combustion technology, variable-speed blower motors, and smart thermostat compatibility. Available in various models with different BTU capacities, these furnaces offer reliable performance with AFUE ratings up to 98%. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Guidelines 3. First-Time Setup 4. Technical Specifications 5. Controls and Settings 6. Maintenance Procedures 7. Operating Instructions 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heat exchanger, blower assembly, gas valve, ignition system, control board, air filter, thermostat connection.

Feature	Description
Heat Exchanger	Stainless steel construction for durability and efficiency
Blower Motor	Variable-speed ECM motor for quiet operation
Ignition System	Hot surface ignition for reliable startup
Gas Valve	Precise gas flow control for optimal combustion
Control Board	Microprocessor-based for smart operation
Air Filter	Standard 1-inch or 4-inch media filter compatibility
Thermostat Connection	Compatible with most 24V thermostats
Safety Switches	Pressure switch, limit switch, rollout switch
Vent System	PVC venting for sidewall or roof termination
Drain Connection	Condensate drain for high-efficiency models

Installation Guidelines

Professional installation recommended. Ensure proper clearances and venting.

Location selection: Choose well-ventilated area with adequate service access.
Gas connection: Use approved gas piping; pressure test before operation.
Electrical connection: 120V AC power supply with proper grounding.
Vent system: Install PVC vent pipes according to local codes.
Drain line: Connect condensate drain to proper disposal.
Thermostat wiring: Connect 24V thermostat wires to control board.

WARNING! Gas appliances can be hazardous; installation must comply with local codes and be performed by qualified technician.

First-Time Setup

After installation, perform initial startup procedure.

Verify all connections: Gas, electrical, vent, drain.
Install air filter: Ensure proper size and orientation.
Power on: Switch furnace power on at unit and breaker.
Thermostat setup: Program desired temperature settings.
Test operation: Cycle furnace through heating mode.
Check airflow: Verify proper air delivery to all registers.

CAUTION! Never bypass safety devices. Ensure proper combustion air supply.

Technical Specifications

Model Series: AC/DC, EC/DC, HC/DC series
Heating Capacity: 40,000 to 120,000 BTU/h
AFUE Rating: Up to 98% efficiency
Gas Type: Natural gas or LP (with conversion kit)
Electrical: 120V AC, 60Hz
Blower Motor: ECM variable speed
Sound Rating: As low as 65 dBA
Warranty: Limited lifetime heat exchanger, 10 years parts
Dimensions: Varies by model (typical: 21"W x 21"D x 45"H)

Controls and Settings

Access control board via front panel. LED status lights indicate system operation.

Thermostat Controls: Heat/Cool/Off mode, Fan Auto/On, Temperature setpoint, Program schedules.

Control Board: Status LED (flash codes for diagnostics), DIP switches for configuration, Service test mode. Blower Settings: Adjustable blower speeds for heating and cooling modes. Gas Valve: Manual shutoff valve, pressure regulator. Limit Switches: Auto-reset high limit protection.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Monthly: Check and replace air filter as needed.
Seasonal: Inspect vent system for obstructions.
Annual: Professional inspection and cleaning.
Blower compartment: Clean annually when accessible.
Drain system: Flush condensate trap and line.
Burners: Inspect for proper flame pattern.

Tip: Keep area around furnace clear for proper airflow and service access.

Operating Instructions

Normal operation through thermostat control.

Set thermostat to HEAT mode and desired temperature.
Furnace will initiate startup sequence when needed.
Inducer motor starts first to establish draft.
Ignition system activates; gas valve opens.
Main burner ignites; blower starts after heat exchanger warms.
System runs until thermostat setpoint is reached.
For continuous airflow: Set thermostat fan to ON position.
Emergency shutoff: Use gas valve or electrical disconnect.

WARNING! Never adjust gas pressure without proper training and equipment.

Safety Features

Multiple safety systems protect against hazardous conditions. Pressure Switch: Ensures proper venting before ignition. Limit Switch: Prevents overheating. Rollout Switch: Detects flame rollout. Ignition Control: Safe startup sequencing. Gas Valve: Automatic shutoff on fault detection.

Care & Maintenance

Regular maintenance is essential for safe and efficient operation.

CAUTION! Turn off power and gas supply before servicing. Only qualified technicians should perform internal repairs.

Regulatory Information

UL listed; ANSI Z21.47 compliant; meets DOE efficiency standards. Manufactured to comply with U.S. safety and performance standards. For technical support and warranty service, contact Luxaire at 1-800-572-7225 or visit www.luxaire.com. Copyright © 2025 Luxaire Heating and Air Conditioning.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, door switch	Check circuit breaker, thermostat settings, ensure door properly closed.
No heat	Gas supply, ignition	Verify gas valve on, check pilot/ignition, inspect filter.
Short cycling	Filter, limit switch	Replace dirty filter, check for blocked vents.
Blower not working	Motor, capacitor, control	Check blower door switch, motor capacitor, control board.
Unusual noises	Motor, blower wheel	Inspect blower wheel for debris, check motor bearings.
LED error codes	Various faults	Refer to diagnostic chart in manual; count flashes.

Reset: Power cycle at breaker; wait 5 minutes before restoring.

Service: 1-800-572-7225; www.luxaire.com