Lennox G60 Furnace Manual

The Lennox G60 Furnace is a high-efficiency gas furnace featuring two-stage heating operation, variable-speed blower motor, durable heat exchanger construction, electronic ignition system, built-in diagnostics, quiet operation technology, and compatibility with various thermostat systems. Designed for residential heating applications with AFUE ratings up to 96%, the G60 series provides reliable comfort with advanced control options and safety features. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Two-stage gas valve, variable-speed blower motor, stainless steel heat exchanger, electronic control board, pressure switches, flame sensor, igniter, and diagnostic LED.

Installation Requirements

Proper installation is critical for safe and efficient operation. Follow all local codes and manufacturer guidelines.

1. Location selection: Install in dry, clean area with adequate clearance for service access.
2. Venting system: Use approved PVC piping for intake and exhaust according to local codes.
3. Gas connection: Use black iron pipe with proper thread sealant; pressure test for leaks.
4. Electrical connection: 120V AC power supply with proper grounding and disconnect.
5. Ductwork: Ensure proper sizing and sealing for optimal airflow.
6. Condensate drain: Install proper drainage system for condensation removal.

WARNING! Installation must be performed by qualified HVAC technician. Gas appliances can be hazardous if improperly installed.

First-Time Setup

Initial startup and configuration procedures for new installations.

1. System checkout: Verify all connections, gas pressure, electrical, and venting.
2. Thermostat configuration: Set up compatible thermostat for two-stage operation.
3. Blower settings: Adjust airflow for proper heating performance.
4. Gas pressure adjustment: Set manifold pressure according to specifications.
5. System test: Run through complete heating cycle to verify operation.
6. Customer orientation: Explain basic operation and maintenance requirements.

CAUTION! Only qualified technicians should perform initial startup and adjustment procedures.

Technical Specifications

• Model Series: G60UHV, G60V
• Input BTU/H: 40,000 - 120,000 (varies by model)
• AFUE Rating: Up to 96%
• Stages: Two-stage heating operation
• Blower Type: Variable-speed ECM motor
• Heat Exchanger: Stainless steel primary and secondary
• Gas Type: Natural gas or LP (with conversion kit)
• Electrical: 120V AC, 60Hz
• Venting: PVC pipe (2" or 3" depending on model)
• Sound Level: As low as 68 dBA
• Warranty: Limited lifetime heat exchanger warranty

Controls and Settings

Integrated control board with diagnostic capabilities and status indicator lights.

Control Board Features: LED status lights, dip switch settings, blower control, gas valve control, safety circuit monitoring.

Operating Modes: HEAT, COOL (with AC), FAN ONLY. Blower Settings: Adjustable delays and speeds. Diagnostic Codes: Flash patterns indicate specific operational status or fault conditions. Temperature Control: Compatible with single-stage and two-stage thermostats.

Venting and Ductwork

Proper venting is essential for safe operation and efficiency.

1. Vent pipe: Use schedule 40 PVC pipe for intake and exhaust.
2. Termination: Locate vent terminals according to code requirements.
3. Slope: Ensure proper drainage slope for condensation.
4. Duct sizing: Follow Manual D calculations for proper airflow.
5. Sealing: Use mastic or approved tape for all duct connections.

Tip: Regular inspection of vent system prevents blockages and ensures proper combustion.

Operating Instructions

Normal operation procedures and user controls.

1. Thermostat setting: Adjust temperature setting for desired comfort level.
2. System operation: Furnace will automatically cycle based on thermostat demand.
3. Fan control: Use thermostat to select AUTO or ON fan operation.
4. Filter monitoring: Check filter status light monthly.
5. Seasonal startup: Verify proper operation at beginning of heating season.

WARNING! Do not attempt to adjust gas pressure or electrical settings. Contact qualified technician for service.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

1. Monthly: Check and replace air filter as needed.
2. Annual: Professional inspection and cleaning.
3. Burner inspection: Clean and verify proper flame pattern.
4. Heat exchanger: Visual inspection for cracks or corrosion.
5. Blower assembly: Clean blower wheel and housing.
6. Drain system: Clear condensate lines and trap.
7. Vent system: Inspect for obstructions or damage.

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

Safety Features

Multiple safety systems protect against hazardous conditions.

Regulatory Information

ANSI Z21.47: Certified for gas-fired central furnaces. CSA International: Approved for use in United States and Canada. Energy Star: Qualified for energy efficiency standards. All installations must comply with National Fuel Gas Code (NFPA 54) and local building codes. For technical support, contact Lennox Industries at 1-800-9-LENNOX or visit www.lennox.com.

Troubleshooting

Reset Procedure: Turn off power for 30 seconds, then restore.

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