Lennox Elite Series Furnace Owners Manual

The Lennox Elite Series Furnace is a high-efficiency gas furnace designed for residential heating applications. Featuring advanced combustion technology, variable-speed blower motors, and quiet operation, this furnace provides reliable warmth with energy-saving performance. Below are key sections covering safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Durable steel heat exchanger, variable-speed ECM blower motor, direct spark ignition, pressure switches, flame sensor, and integrated control board.

Installation Requirements

Professional installation required. Ensure proper clearances and venting.

1. Location: Install in dry, clean area with adequate combustion air and service access.
2. Clearances: Maintain minimum clearances as specified in installation manual.
3. Venting: Use approved PVC pipe for combustion air intake and flue gas exhaust.
4. Gas Connection: Use black iron pipe with proper thread sealant.
5. Electrical: 120V AC power supply with proper grounding.
6. Drain Line: Install condensate drain line with trap.

WARNING! Installation must be performed by qualified HVAC technician. Improper installation can cause fire, explosion, or carbon monoxide poisoning.

First-Time Setup

Initial startup must be performed by qualified technician.

1. Verify installation: Check all connections, clearances, and venting.
2. Gas pressure: Adjust manifold pressure to specifications.
3. Electrical: Verify proper voltage and grounding.
4. Startup sequence: Follow manufacturer's startup procedure.
5. System check: Verify proper operation of all safety controls.
6. Customer orientation: Explain thermostat operation and basic maintenance.

CAUTION! Do not attempt startup without proper training and equipment. Gas appliances can be dangerous if improperly handled.

Technical Specifications

• Models: EL195UH, EL296UH, EL297UH series
• Input BTU/H: 40,000 to 120,000 BTU
• AFUE: Up to 98.7%
• Gas Type: Natural gas (LP conversion kit available)
• Electrical: 120V AC, 60Hz, 1.5-6.0 amps
• Blower Motor: Variable-speed ECM
• Sound Level: As low as 65 dBA
• Venting: 2" PVC pipe (check local codes)
• Dimensions: Varies by model (check specific model data)
• Weight: 90-150 lbs depending on model

Controls and Settings

Integrated control board manages all furnace operations. Access via service panel.

Thermostat Connections: R, C, W, G, Y terminals for conventional thermostat operation.

Diagnostic Lights: LED status lights indicate system operation and error codes.

Blower Speeds: Factory-set for optimal airflow. Adjustments require professional service.

Gas Valve: Regulates gas flow to burners. Pressure settings factory-calibrated.

Limit Switches: Protect against overheating. Auto-reset after cool-down.

Operating Instructions

Operation controlled through wall thermostat.

1. Set thermostat to HEAT mode and desired temperature.
2. Furnace will initiate startup sequence when heat is demanded.
3. Normal operation: Inducer motor starts, pressure switches prove, ignition sequence begins.
4. Once flame is proven, main burners ignite and blower starts after heat exchanger warm-up.
5. When thermostat is satisfied, burners shut off and blower continues for cool-down period.

Tip: Keep thermostat set to consistent temperatures for optimal efficiency.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

1. Monthly: Check and replace air filter if dirty
2. Seasonal: Professional inspection before heating season
3. Annual: Complete professional maintenance including:
   • Clean heat exchanger
   • Check burners and flame sensor
   • Inspect vent system
   • Verify gas pressure and combustion
   • Check safety controls
   • Lubricate motor if required

WARNING! Turn off power and gas supply before performing any maintenance.

Safety Features

Multiple safety systems protect against hazardous conditions.

Care & Cleaning

Regular cleaning maintains efficiency and extends equipment life.

1. Air Filter: Replace every 1-3 months depending on usage and environment
2. Burners: Professional cleaning annually to remove debris
3. Blower Assembly: Vacuum annually to remove dust
4. Drain System: Flush condensate trap and drain line annually
5. Venting: Inspect for obstructions or damage

CAUTION! Never operate furnace without filter. Keep area around furnace clean and unobstructed.

Warranty Information

Lennox provides comprehensive warranty coverage for Elite Series furnaces.

• Heat Exchanger: Limited lifetime warranty
• Parts: 5-year limited warranty on functional components
• Labor: 1-year limited warranty (extended coverage available)
• Registration: Product must be registered within 90 days of installation
• Transferable: Limited warranty transfers to new homeowner

For warranty service, contact authorized Lennox dealer. Keep original sales receipt and installation documents.

Troubleshooting

Reset Procedure: Turn thermostat to OFF, turn off power at furnace for 30 seconds, restore power, set thermostat to HEAT.

Service: Contact authorized Lennox dealer for professional service. Do not attempt repairs beyond basic troubleshooting.