Lennox Elite Series Furnace Manual PDF

The Lennox Elite Series Furnace is a high-efficiency residential heating system featuring advanced technology for optimal performance and energy savings. This comprehensive manual covers installation, operation, maintenance, and troubleshooting for various Elite Series models including SLP98V, EL296V, and ML296 models. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Variable-speed blower motor, sealed combustion system, diagnostic LED lights, integrated control board, pressure switches, flame sensor, and igniter.

Installation Guidelines

Professional installation recommended. Unpack and inspect all components before beginning.

1. Location selection: Choose well-ventilated area with proper clearances as specified.
2. Venting installation: Install PVC vent pipes according to local codes and manufacturer specifications.
3. Gas line connection: Use proper pipe size and thread sealant approved for natural gas.
4. Electrical wiring: Connect to 120V power supply with proper grounding.
5. Thermostat wiring: Connect compatible thermostat following wiring diagram.
6. Ductwork connection: Ensure proper sizing and sealing of supply and return ducts.

WARNING! Gas furnaces produce carbon monoxide. Proper installation and venting are critical for safety. Installation must comply with all local codes.

First-Time Setup

Complete system startup and configuration after installation.

1. Power on furnace: Turn on electrical power and gas supply.
2. Thermostat configuration: Set to heating mode and desired temperature.
3. System check: Verify proper ignition sequence and flame establishment.
4. Airflow adjustment: Set blower speeds according to duct system requirements.
5. Safety testing: Test pressure switches, limit controls, and rollout switches.
6. Combustion analysis: Verify proper gas pressure and combustion readings.

CAUTION! Only qualified HVAC technicians should perform startup procedures. Improper setup can create hazardous conditions.

Specifications

• Models: SLP98V, EL296V, ML296, EL195, ML195 series
• Input BTU/H: 40,000 to 120,000 depending on model
• AFUE: Up to 98.7% (SLP98V models)
• Gas Type: Natural gas or LP (with conversion kit)
• Electrical: 120V, 60Hz, 1.5-8.0 amps depending on model
• Blower Motor: Variable-speed ECM
• Venting: PVC, CPVC, or ABS (2" or 3" diameter)
• Sound Level: As low as 68 dB on some models
• Warranty: Limited lifetime on heat exchanger, 5-10 years on parts
• Dimensions: Varies by model (typical: 21"W x 26"D x 45"H)

Controls and Settings

Integrated furnace control board manages all operations with diagnostic capabilities.

Control Board: LED status light, dip switches for configuration, terminal strip for thermostat connections.

Configuration: Blower speeds (HEAT, COOL, FAN), timing delays, accessory control. Diagnostics: LED flash codes indicate system status and fault conditions. Thermostat compatibility: Works with conventional and programmable thermostats; optimal with Lennox iComfort system.

Venting and Airflow

Proper venting is critical for safe and efficient operation.

1. Vent pipe sizing: Use manufacturer-specified diameters (typically 2" or 3").
2. Vent length: Follow maximum vent run specifications for intake and exhaust.
3. Termination: Install vent caps according to clearance requirements.
4. Airflow: Ensure proper return and supply duct sizing for CFM requirements.
5. Filters: Install correct size and MERV rating for system protection.

Tip: Regular inspection of vent pipes and air filters ensures optimal performance and safety.

Operation Instructions

Normal heating cycle operation and user controls.

1. Thermostat call: Set thermostat above room temperature to initiate heating cycle.
2. Startup sequence: Inducer motor starts, pressure switches prove, igniter heats, gas valve opens.
3. Flame establishment: Burners ignite, flame sensor confirms, main blower starts after delay.
4. Running operation: Furnace runs until thermostat satisfaction or safety shutdown.
5. Shutdown sequence: Gas valve closes, inducer runs for post-purge, blower continues for cool-down.
6. Fan operation: Continuous fan mode available through thermostat setting.

WARNING! Never block return or supply vents. Maintain clearances around furnace. Install carbon monoxide detectors in living areas.

Maintenance Procedures

Regular maintenance ensures efficiency, reliability, and longevity.

1. Monthly: Check and replace air filter as needed.
2. Seasonal: Inspect vent system for obstructions or damage.
3. Annual professional service: Clean burners, heat exchanger, and blower assembly.
4. Annual: Check gas pressure, combustion analysis, safety controls.
5. Annual: Lubricate inducer motor if required (most are permanently lubricated).
6. As needed: Clean flame sensor with fine emery cloth.

Care & Cleaning

Turn off electrical power and gas supply before any cleaning. Use soft brush and vacuum for dust removal.

CAUTION! Do not use water or liquid cleaners. Keep electrical components dry. Never operate without filters installed.

Regulatory Information

ANSI Z21.47: Certified for natural gas and propane operation. CSA International: Certified to North American safety standards. ENERGY STAR: Qualified models meet ENERGY STAR efficiency requirements. For technical support, visit www.lennox.com or contact 1-800-9-LENNOX. All installations must comply with National Fuel Gas Code (NFPA 54) and local building codes.

Troubleshooting

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

Service: 1-800-9-LENNOX; www.lennox.com - Always use authorized Lennox dealers for service.