Nordyne FG6RC Furnace Manual

The Nordyne FG6RC is a high-efficiency gas furnace designed for residential heating applications. This model features advanced combustion technology, multiple-speed blower operation, electronic ignition, safety controls, and compatibility with various thermostat systems. Below are key sections covering safety, specifications, 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. Venting and Combustion Air 7. Maintenance Procedures 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Gas valve, heat exchanger, blower assembly, electronic ignition, pressure switches, limit controls, and diagnostic LED.

Feature	Description
Gas Valve	Precise gas flow control with safety shutoff
Heat Exchanger	Stainless steel construction for durability and efficiency
Blower Assembly	Multi-speed ECM motor for quiet operation
Electronic Ignition	Hot surface igniter for reliable startup
Pressure Switches	Ensures proper venting operation
Limit Controls	Prevents overheating
Diagnostic LED	Flashing codes for troubleshooting
Filter Rack	Standard 1-inch filter compatibility
Gas Connection	1/2" NPT gas inlet
Electrical Connection	120V AC, 60Hz power supply

Installation Requirements

Professional installation required. Verify local codes and obtain permits.

Location: Install in dry, clean area with adequate clearance for service.
Venting: Use approved PVC or metal vent pipe per manufacturer specifications.
Gas Supply: Connect to properly sized gas line with sediment trap.
Electrical: Connect to dedicated 120V circuit with proper grounding.
Ductwork: Ensure proper sizing and sealing for optimal airflow.

WARNING! Gas furnaces produce carbon monoxide; improper installation can be fatal. Only qualified technicians should install.

First-Time Setup

After installation, perform initial startup procedure.

Verify all connections: Gas, electrical, venting, and ductwork.
Check gas pressure: Adjust manifold pressure per specifications.
Test safety controls: Verify limit switches and pressure switches function.
Program thermostat: Set heating parameters and fan operation.
Perform combustion analysis: Ensure proper CO levels and efficiency.

CAUTION! Never bypass safety controls. Test carbon monoxide detectors after installation.

Technical Specifications

Input Capacity: 60,000-120,000 BTU/h (model dependent)
AFUE Rating: Up to 96% efficiency
Gas Type: Natural gas (convertible to LP with kit)
Electrical: 120V AC, 60Hz, 5-8 amps
Blower Motor: ECM multi-speed
Venting: 2" PVC recommended
Dimensions: Varies by model (typically 21"W x 21"D x 40"H)
Weight: 90-120 lbs
Sound Rating: < 65 dBA

Controls and Operation

Integrated control board manages all furnace functions with diagnostic capabilities.

Thermostat: HEAT/COOL/OFF, FAN AUTO/ON, temperature setting.

Furnace Controls: Power switch, gas valve, pressure switches, limit controls, igniter, flame sensor. Operation Sequence: Call for heat → inducer motor starts → pressure switch proves → igniter heats → gas valve opens → flame detection → blower starts after delay.

Venting and Combustion Air

Direct vent or conventional venting options available.

Direct Vent: Use concentric or separate PVC pipes through wall.
Conventional: Metal B-vent through roof with proper clearance.
Combustion Air: Provide adequate fresh air per local codes.
Vent Length: Follow manufacturer's maximum length specifications.

Tip: Keep vent terminals clear of snow, debris, and obstructions.

Maintenance Procedures

Annual professional maintenance recommended.

Filter Replacement: Change 1-inch filter monthly during heating season.
Blower Cleaning: Vacuum blower assembly and motor annually.
Heat Exchanger: Inspect for cracks or corrosion.
Burner Cleaning: Remove and clean burners if dirty.
Vent System: Inspect for blockages or damage.
Gas Connections: Check for leaks with bubble solution.
Electrical: Tighten connections and check wiring.
Drain System: Clear condensate trap and drain line.

WARNING! Turn off gas and electrical power before servicing. Only qualified technicians should perform internal maintenance.

Safety Features

Flame Rollout Switch: Detects improper burner operation. Limit Switch: Prevents overheating. Pressure Switches: Ensure proper venting. Ignition Control: Safely manages gas valve and igniter. Flame Sensor: Confirms burner ignition.

Care & Cleaning

Keep area around furnace clean and clear. Vacuum exterior surfaces. Clean drain system with approved methods.

CAUTION! Do not use water or cleaning chemicals on electrical components. Keep flammable materials away from furnace.

Regulatory Information

ANSI Z21.47: Certified for gas-fired central furnaces. UL: Listed for safety standards. CSA: Approved for Canadian installations. For support, contact Nordyne at 1-800-422-4328 or visit www.nordyne.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, switch	Check circuit breaker, thermostat setting, power switch.
No heat	Gas supply, igniter, filter	Verify gas valve on, check igniter, replace dirty filter.
Short cycling	Filter, limit switch, airflow	Clean filter, check limit switch, verify proper airflow.
Blower won't stop	Thermostat, control board	Check thermostat fan setting, inspect control board.
Lockout condition	Safety device tripped	Reset power, check diagnostic LED for error code.

Reset: Turn power off for 30 seconds then restore.

Service: 1-800-422-4328; www.nordyne.com