1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Goodman GR9S800803BN 80,000 BTU 80% AFUE Multi-Speed Gas Furnace. Please read this manual thoroughly before attempting any procedures. Retain this manual for future reference.
The Goodman GR9S800803BN is an 80% AFUE (Annual Fuel Utilization Efficiency) multi-speed, single-stage gas furnace designed for upflow or horizontal installations. It features an 80,000 BTU heating capacity and a multi-speed ECM motor for enhanced airflow control and efficiency.
Figure 1: Goodman GR9S800803BN Gas Furnace. This image displays the exterior of the Goodman GR9S800803BN gas furnace, a gray rectangular unit with the Goodman logo on the lower panel.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
- Always disconnect power before servicing the unit.
- Ensure proper ventilation to prevent carbon monoxide buildup.
- Installation and service must be performed by a qualified installer or service agency.
- Do not store flammable materials near the furnace.
- This furnace is designed for natural gas. If converting to LP (Liquid Propane), a qualified technician must perform the conversion using an approved LP conversion kit (sold separately).
- Due to federal guidelines and restrictions, this item cannot be sold to California residents.
3. Setup and Installation
The Goodman GR9S800803BN furnace is designed for upflow or horizontal installations only. It cannot be installed as a downflow unit. Refer to the detailed installation instructions provided with the unit for specific requirements and procedures.
3.1 Pre-Installation Checks
- Verify that the furnace model matches the installation requirements.
- Ensure adequate space for installation and future servicing.
- Confirm that electrical supply, gas supply, and venting meet local codes and manufacturer specifications.
- Inspect the unit for any shipping damage.
3.2 Installation Orientation
This furnace supports two primary installation orientations:
- Upflow: Air enters the bottom and exits the top.
- Horizontal: Air enters one side and exits the other. This can be configured for horizontal right or horizontal left.
Important: This unit is not designed for downflow applications. If a downflow furnace is required, please select a model specifically designed for that configuration (e.g., models beginning with GD9).
Figure 2: Furnace Dimensions. This image illustrates the key dimensions of the Goodman GR9S800803BN furnace, showing a width of 17.5 inches and a height of 33.38 inches.
3.3 Connecting Accessories
Accessories such as line sets, thermostats, and LP (Liquid Propane) conversion kits are sold separately and must be installed according to their respective instructions by a qualified technician.
4. Operating Instructions
Before operating the furnace, ensure all installation steps are complete and verified by a qualified technician.
4.1 Initial Startup
- Ensure the gas supply valve to the furnace is open.
- Turn on the electrical power to the furnace.
- Set your thermostat to the desired heating mode and temperature.
- The furnace will initiate its startup sequence, which typically includes a pre-purge cycle, ignition, and then the main burner operation.
- Observe the furnace during its first cycle to ensure proper operation and no unusual noises or odors.
4.2 Normal Operation
The furnace operates automatically based on the thermostat settings. The multi-speed ECM motor adjusts airflow to optimize heating performance and efficiency, contributing to quieter operation.
4.3 Shutting Down the Furnace
For temporary shutdown, set the thermostat to "OFF" or a temperature below the ambient room temperature. For extended periods of non-use or servicing, turn off the electrical power and close the main gas supply valve to the furnace.
5. Maintenance
Regular maintenance is crucial for the longevity and efficient operation of your furnace. It is recommended that a qualified HVAC technician perform annual professional maintenance.
5.1 Air Filter Replacement
Check the air filter monthly and replace it as needed, or at least every 1-3 months, depending on usage and environmental conditions. A dirty filter restricts airflow, reduces efficiency, and can damage the furnace.
5.2 General Cleaning
- Keep the area around the furnace clear of obstructions and combustible materials.
- Ensure the return air and supply air vents are not blocked.
- Periodically clean the exterior of the furnace with a soft, damp cloth.
5.3 Professional Inspection
An annual inspection by a certified HVAC technician should include:
- Checking and cleaning the heat exchanger.
- Inspecting the burner assembly and ignition system.
- Verifying proper gas pressure and combustion.
- Checking electrical connections and components.
- Inspecting the flue and venting system.
6. Troubleshooting
This section provides basic troubleshooting steps for common issues. For complex problems or if you are unsure, contact a qualified HVAC technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Furnace not heating | Thermostat set incorrectly, power off, gas valve closed, dirty air filter, pilot light (if applicable) out. | Check thermostat settings, ensure power is on, open gas valve, replace air filter, consult technician for pilot light issues. |
| Noisy operation | Dirty blower wheel, loose panel, restricted airflow. | Clean blower wheel, secure panels, check for blocked vents or dirty filter. |
| Furnace cycles on and off frequently | Dirty air filter, oversized furnace, thermostat issues. | Replace air filter, consult technician for sizing or thermostat diagnosis. |
| Blower runs continuously | Thermostat fan setting on "ON", electrical issue. | Set thermostat fan to "AUTO". If issue persists, contact technician. |
If the furnace displays an error code, refer to the diagnostic codes section in the full installation manual or contact a qualified service technician.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | GR9S800803BN |
| Heating Capacity | 80,000 BTU |
| AFUE Efficiency | 80% |
| Motor Type | Multi-Speed ECM |
| Stages | Single-Stage |
| Installation Type | Upflow / Horizontal |
| Cabinet Width | 17.5 inches |
| Product Dimensions (L x W x H) | 28 x 17.5 x 33.37 inches |
| Item Weight | 115 Pounds |
| Material | Alloy Steel (Primary Heat Exchanger: Aluminized Steel) |
| Voltage | 115 Volts |
Figure 3: Key Specifications. This image provides a visual summary of the Goodman GR9S800803BN furnace's key specifications, including 80% efficiency, 80k BTU heating, up/multi flow, single stage, and dimensions.
Figure 4: EnergyGuide Label. This image displays the U.S. Government EnergyGuide label for the Goodman GR9S800803BN furnace, indicating an efficiency rating (AFUE) of 80.0.
8. Warranty and Support
The Goodman GR9S800803BN furnace typically comes with a 10-year limited parts warranty. Specific warranty terms and conditions may vary. Please refer to the warranty documentation included with your product for complete details, registration requirements, and limitations.
Figure 5: 10-Year Limited Warranty. This image shows a shield icon indicating a 10-year limited warranty for the product.
For technical support, service, or warranty claims, please contact your authorized Goodman dealer or a qualified HVAC service professional. Ensure you have your model number (GR9S800803BN) and serial number available when contacting support.
