1. Introduction
Thank you for choosing the A.O. Smith GCR-50 ProMax Plus High Efficiency Gas Water Heater. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new water heater. Please read all instructions carefully before installation and use. Keep this manual for future reference.
The ProMax Plus series offers advanced features designed for reliable hot water supply and energy efficiency. This model is a 50-gallon capacity unit, suitable for various household needs.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
- This water heater must be installed by a qualified professional in accordance with all local codes and regulations.
- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- Ensure adequate ventilation for the water heater.
- Never block the air intake or exhaust vents.
- Regularly inspect for gas leaks. If you smell gas, follow emergency procedures immediately.
- Do not tamper with the temperature and pressure relief valve (T&P valve).
3. Product Overview
The A.O. Smith GCR-50 ProMax Plus water heater is designed for high efficiency and durability. Key features include:
- Blue Diamond glass coating: Provides superior corrosion resistance compared to standard glass linings.
- Self-powered electronic gas valve: Utilizes a thermopile to generate power for the electronic gas control, eliminating the need for external power.
- Internal microprocessor: Offers enhanced operating parameters and tighter differentials for precise sensing and faster heating response.
- Dynaclean diffuser dip tube: Helps reduce lime and sediment buildup, maximizing hot water output. Made from long-lasting PEX cross-linked polymer.
- Meets all current regulations set forth by the National Appliance Energy Conservation Act (NAECA).
This model is part of the ProMax family, offering solutions for high recovery and energy efficiency, including options for specialty and direct venting systems.
4. Installation
IMPORTANT: Installation of this gas water heater must be performed by a qualified installer or service agency. Incorrect installation can lead to serious injury, property damage, or death.
Ensure the installation site complies with all local codes, including proper clearances, ventilation, and gas line requirements. The water heater requires a suitable location with access to a natural gas supply, water lines, and a proper venting system. The direct vent models draw clean air from outside, eliminating concerns about indoor ventilation.
Refer to the detailed installation instructions provided with the physical product for specific steps regarding plumbing, gas connections, venting, and electrical connections (if applicable for electronic controls).
5. Operating Instructions
Once installed and all connections are verified by a professional, follow these general operating guidelines:
- Filling the Tank: Before lighting the pilot or turning on the gas, ensure the water heater tank is completely filled with water. Open a hot water faucet in your home to allow air to escape until a steady stream of water flows.
- Lighting the Pilot: Follow the instructions on the water heater's control panel for lighting the pilot. The self-powered electronic gas valve simplifies this process.
- Setting Water Temperature: The temperature control knob is typically located on the gas control valve. For safety and energy efficiency, it is recommended to set the temperature between 120°F (49°C) and 125°F (52°C). Higher temperatures increase the risk of scalding.
- Monitoring Operation: The internal microprocessor continuously monitors and adjusts operation for optimal performance. Listen for normal operating sounds and report any unusual noises or smells to a qualified service technician.
6. Maintenance
Regular maintenance ensures the longevity and efficient operation of your water heater. It is recommended to have a qualified service technician perform annual inspections.
- Flushing the Tank: Annually, drain and flush the tank to remove sediment buildup. This helps maintain efficiency and prevents corrosion.
- T&P Valve Test: Test the temperature and pressure relief valve at least once a year to ensure it is operating correctly. Follow the manufacturer's instructions carefully.
- Anode Rod Inspection: The anode rod protects the tank from corrosion. Have it inspected and replaced by a professional every 3-5 years, or more frequently in areas with hard water.
- Vent System Check: Ensure the vent system is clear of obstructions and properly sealed.
- General Cleaning: Keep the area around the water heater clear of debris and flammable materials.
7. Troubleshooting
Before calling for service, review these common issues and solutions. For complex problems, contact a qualified service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| No hot water or insufficient hot water | Pilot light out, gas supply off, thermostat set too low, sediment buildup. | Relight pilot, check gas valve, adjust thermostat, flush tank (professional recommended). |
| Water too hot | Thermostat set too high. | Lower thermostat setting. |
| Leaking water heater | Loose connections, T&P valve discharge, tank leak. | Tighten connections, check T&P valve, contact professional for tank leaks. |
| Unusual noises (rumbling, popping) | Sediment buildup in tank. | Flush tank (professional recommended). |
8. Specifications
Detailed specifications for the A.O. Smith GCR-50 ProMax Plus water heater:
- Brand: A. O. Smith
- Model Number: GCR-50
- Capacity: 50 Gallons
- Power Source: Natural Gas (Note: The provided data incorrectly listed 'Wind Powered'. This is a gas water heater.)
- Efficiency: High Efficiency
- Special Features: Blue Diamond glass coating, Self-powered electronic gas valve, Internal microprocessor, Dynaclean diffuser dip tube, PEX cross-linked polymer
- Material Type: Glass (for tank lining)
- UPC: 671657197742
- Manufacturer: Trumbull Industries
EnergyGuide Information
The EnergyGuide label provides important information about the estimated energy consumption and cost of your water heater. For the A.O. Smith GCR-50 ProMax Plus, the estimated yearly energy cost is $263, based on a national average natural gas cost of $1.09 per Therm. The estimated yearly energy use is 242 Therms. The cost range for similar models is between $228 and $275. Your actual cost will vary depending on your utility rates and usage habits.
9. Warranty and Support
Warranty: This A.O. Smith water heater comes with a 6-year limited tank and parts warranty. Please refer to the warranty document included with your product for full terms and conditions.
Customer Support: For technical assistance, warranty claims, or to locate a qualified service professional, please contact A.O. Smith customer support. Contact information can typically be found on the manufacturer's website or on the water heater itself.
For more information, you may visit the A. O. Smith Store on Amazon.