Frigidaire Furnace Manual FG6RC

The Frigidaire FG6RC is a high-efficiency gas furnace designed for residential heating applications. This model features variable-speed blower technology, electronic ignition, multiple heating stages, and advanced safety controls. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: Variable-speed ECM blower, electronic hot surface igniter, multi-position installation, sealed combustion chamber, diagnostic LED lights.

Feature	Description
Variable-speed blower	ECM motor for quiet operation and energy efficiency
Electronic ignition	Hot surface igniter for reliable startup
Multi-position	Upflow, downflow, or horizontal installation
Sealed combustion	Direct vent system for safety and efficiency
Diagnostic lights	LED status indicators for troubleshooting
Two-stage heating	High and low fire operation
Safety controls	Flame rollout switch, pressure switches, limit controls
AFUE rating	Up to 96% annual fuel utilization efficiency
Gas valve	Electronic modulating gas valve
Control board	Integrated furnace controller

Installation

Unpack and inspect contents. Ensure proper location with adequate clearance.

Gas connection: Use approved gas pipe and fittings; pressure test for leaks.
Vent system: Install PVC vent pipes according to local codes and manufacturer specifications.
Electrical: Connect 120V power supply; install proper disconnect switch.
Thermostat: Connect low-voltage thermostat wiring.
Ductwork: Connect supply and return ducts securely.

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

First-Time Setup

Power on furnace; follow startup procedure.

Gas pressure: Verify and adjust manifold pressure to specifications.
Vent verification: Check vent system for proper operation and draft.
Blower speed: Set appropriate CFM for heating application.
Thermostat configuration: Program for proper staging and fan control.
Safety check: Verify all safety controls are functioning properly.

CAUTION! Never bypass safety controls. Ensure proper combustion air supply.

Specifications

Model: FG6RC Series
Input BTU: 40,000 - 120,000 BTU/hr
AFUE: Up to 96%
Stages: Two-stage heating
Blower: Variable-speed ECM
Gas Type: Natural gas or LP (with conversion kit)
Voltage: 120V AC, 60Hz
Vent Size: 2" or 3" PVC
Sound Level: Less than 70 dB
Warranty: Limited lifetime heat exchanger, 10 years parts

Controls and Settings

Access control board via front panel. Diagnostic lights indicate system status.

Control Board: POWER, STATUS LED, DIP switches for configuration.

Heating: Two-stage operation with variable blower speeds. Fan: Continuous fan mode available. Temperature: Adjustable temperature rise. Timing: Blower on/off delays adjustable. Safety: Automatic shutdown with diagnostic codes.

Connecting Thermostat

Standard 24V thermostat connection with R, W, G, Y, C terminals.

Turn off power to furnace before wiring.
Connect thermostat wires to control board terminals.
Use proper gauge thermostat wire (18 AWG recommended).
Program thermostat for two-stage operation.

Tip: Use programmable thermostat for maximum energy savings.

Operation

Normal heating cycle operation.

Thermostat calls for heat: Control board initiates startup sequence.
Inducer motor: Starts to establish draft through heat exchanger.
Ignition: Hot surface igniter glows, gas valve opens.
Flame detection: Flame sensor confirms ignition.
Blower operation: Blower starts after heat exchanger warms up.
Shutdown: When thermostat satisfied, gas valve closes, blower continues for cool-down.

WARNING! Never operate furnace with access panels removed.

Maintenance

Annual maintenance required for optimal performance and safety.

Air filter: Replace every 1-3 months depending on usage.
Heat exchanger: Inspect annually for cracks or damage.
Burners: Clean and inspect for proper flame pattern.
Vent system: Check for obstructions and proper slope.
Drain system: Clear condensate drain lines and trap.
Blower: Clean blower wheel and housing annually.

Care & Cleaning

Turn off power before cleaning. Use soft brush and vacuum for internal components.

CAUTION! Do not use water or liquid cleaners on electrical components. Keep area around furnace clear of combustible materials.

Regulatory Information

ANSI Z21.47: Certified for natural gas and propane operation. UL listed. Meets DOE efficiency standards. For support, visit www.frigidaire.com or contact 1-800-374-4432. Installation must comply with local building codes and NFPA 54.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Furnace won't start	Power, thermostat, safety lockout	Check power supply; verify thermostat setting; reset power.
No heat	Gas supply, ignition failure	Verify gas valve on; check for diagnostic codes; inspect igniter.
Short cycling	Dirty filter, blocked vent	Replace air filter; check vent system for obstructions.
Blower won't run	Motor, capacitor, control board	Check for power to blower; inspect capacitor; verify control signal.
Lockout mode	Safety switch, flame failure	Reset power; check diagnostic lights; inspect flame sensor.

Reset: Turn power off for 30 seconds then restore.

Service: 1-800-374-4432; www.frigidaire.com