Lennox Elite Series Oil Furnace Manual

The Lennox Elite Series Oil Furnace is a high-efficiency heating system designed for residential use, featuring advanced combustion technology, durable steel heat exchangers, efficient oil burners, electronic ignition systems, integrated safety controls, and compatibility with various thermostat systems. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. First-Time Setup 4. Technical Specifications 5. Controls and Operation 6. Thermostat Connection 7. Maintenance Procedures 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Steel heat exchanger, oil burner assembly, combustion chamber, blower motor, safety controls, filter system, and thermostat connections.

Feature	Description
Heat Exchanger	Durable steel construction for efficient heat transfer
Oil Burner	High-efficiency nozzle system with adjustable flame
Blower Motor	Variable speed for optimal air circulation
Safety Controls	Automatic shut-off for overheat protection
Filter System	Standard 1-inch filter slot for air filtration
Thermostat Connection	Compatible with most 24V thermostat systems
Ignition System	Electronic ignition for reliable startup
Venting	Standard flue pipe connections
Fuel Connection	Standard oil line fittings
Power Requirements	120V AC, 60Hz electrical supply

Installation Requirements

Professional installation recommended. Ensure proper clearances and venting.

Location: Install in well-ventilated area with proper clearances to combustibles.
Venting: Connect to approved flue pipe system with proper draft.
Oil Supply: Connect to oil tank with proper filter and shut-off valve.
Electrical: Connect to 120V AC power with proper grounding.
Thermostat: Wire to compatible 24V thermostat system.

WARNING! Installation must comply with local codes and regulations. Use qualified HVAC technician.

First-Time Setup

Initial startup and system configuration.

System Check: Verify all connections are secure and proper.
Oil System: Prime oil line and check for leaks.
Electrical: Turn on power and verify control board operation.
Thermostat: Set to desired temperature and test heating cycle.
Combustion: Adjust burner for optimal flame pattern and efficiency.

CAUTION! First startup should be performed by qualified technician.

Technical Specifications

Heating Capacity: 85,000 - 150,000 BTU/h range
Efficiency: Up to 86% AFUE rating
Fuel Type: No. 2 heating oil
Blower Capacity: 800 - 1400 CFM
Electrical: 120V AC, 60Hz, 5-8 amps
Dimensions: Varies by model (typically 55"H x 21"W x 26"D)
Weight: 150-200 lbs depending on model
Warranty: Limited lifetime heat exchanger warranty

Controls and Operation

Primary controls located on integrated control board. System operation managed through thermostat.

Control Board: Power switch, reset button, status lights, diagnostic codes.

Operation: System starts when thermostat calls for heat. Burner ignites, heat exchanger warms, blower circulates warm air. Safety controls monitor temperature and flame.

Thermostat Connection

Compatible with most 24V thermostat systems. Standard R, W, G, C terminals.

Turn off power before wiring thermostat.
Connect R (24V), W (heat), G (fan), C (common) terminals.
Follow thermostat manufacturer's installation instructions.
Restore power and test system operation.

Tip: Use programmable thermostat for improved efficiency.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Monthly: Check and replace air filter as needed.
Annual: Professional cleaning and inspection recommended.
Oil System: Replace oil filter annually.
Burner: Clean nozzle and electrodes annually.
Heat Exchanger: Inspect for cracks or damage annually.
Blower: Clean blower assembly and check belt tension.

WARNING! Disconnect power before performing any maintenance.

Safety Features

Multiple safety systems protect against hazardous conditions.

High Limit Switch: Shuts off burner if temperature exceeds safe limits
Flame Sensor: Monitors burner flame and shuts off fuel if flame lost
Pressure Switch: Ensures proper venting before burner ignition
Oil Valve: Automatic shut-off in case of system failure
Overload Protection: Protects blower motor from electrical overload

Care & Cleaning

Regular cleaning maintains efficiency and prevents breakdowns.

Exterior: Wipe with damp cloth. Interior: Vacuum dust and debris annually. Heat Exchanger: Professional cleaning recommended. Burner Assembly: Clean annually by qualified technician.

CAUTION! Never use water or cleaning chemicals on electrical components.

Regulatory Information

UL listed and complies with ANSI standards for oil-fired central furnaces. Meets DOE efficiency standards. Manufactured to ISO 9001 quality standards. For technical support, contact Lennox at 1-800-9-LENNOX or visit www.lennox.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Thermostat setting, power, oil supply	Check thermostat setting; verify power; check oil level and filter
Burner won't ignite	Ignition failure, fuel supply	Check for spark at electrodes; verify oil supply; reset system
Frequent cycling	Dirty filter, thermostat issues	Replace air filter; check thermostat location and calibration
Unusual noises	Blower issues, combustion problems	Inspect blower assembly; check burner alignment; call technician
Poor heating	Dirty system, airflow issues	Clean heat exchanger; check ductwork; replace filter

Reset: Use reset button on control board if system locks out.

Service: 1-800-9-LENNOX; www.lennox.com