An automatic standby generator provides backup electrical power to a home during utility outages. Generac systems, ranging from 8 kW to 22 kW, are designed to operate automatically, supplying power directly to the home’s electrical circuit breaker. Installation should only be performed by qualified electricians or contractors. This article details information regarding installation considerations, maintenance procedures, safety precautions, and operational features based on the provided documentation.
System Overview and Intended Use
Generac automatic standby generators are intended for backup power applications. The documentation explicitly states these generators are “NOT INTENDED FOR USE IN CRITICAL LIFE SUPPORT APPLICATIONS.” The systems are designed to operate whether occupants are home or away, automatically initiating power supply within seconds of detecting an outage. The generators are available under the Generac, Guardian, and Centurion brands, but the documentation notes that Corepower and EcoGen products are not covered by the extended coverage details provided.
Installation Requirements and Considerations
Proper installation is critical for safe and reliable operation. The documentation emphasizes that only qualified electricians or contractors should attempt installation. A key consideration during installation is the correct sizing of the gas line. Generac does not provide gas line sizing calculations directly; however, the company can provide fuel consumption data and required water column measurements to assist gas installers in determining the appropriate size.
During installation, it is essential to place a “DO NOT OPERATE” tag on both the generator panel and the transfer switch. The generator must be run with all appropriate panels in place, even during troubleshooting performed by a technician.
Safety Precautions
The documentation highlights several critical safety precautions. Engine exhaust contains constituents known to the state of California to cause cancer, birth defects, and other reproductive harm. Therefore, installation must be outdoors.
When working with the battery, users must employ specific safety measures:
- Use tools with insulated handles.
- Wear rubber gloves and boots.
- Do not place tools or metallic objects on top of the battery.
- Disconnect the charging source before connecting or disconnecting battery terminals.
Additionally, users should avoid prolonged or repeated skin exposure to used oil, washing exposed areas thoroughly with soap. Never operate the engine with the oil level below the “Add” mark on the dipstick, as this could cause engine damage. Hot oil can cause burns.
Maintenance Procedures and Genuine Generac Parts
Regular maintenance is crucial for the longevity and reliable operation of the generator. Maintenance kits and parts are available from Generac sales and service dealers, part distributors, or online at ordertree.com. The documentation strongly advises using only Generac-brand maintenance parts, stating that cross-reference numbers for other brands are not provided or recommended. Specifically, Generac oil kits, which include both oil and an air filter, should be used to maintain warranty coverage. These kits can be purchased through authorized dealers or directly from shop.generac.com.
Maintenance alerts may occur at similar intervals, but the controller typically displays only one alert at a time. Proper maintenance and safe operation are emphasized as vital to the generator’s lifespan.
Operational Features and Control Panel
The control panel allows for interaction with the generator. To access the menu, the “Escape” button may need to be pressed multiple times. Navigation within the menu is achieved using the up and down arrow buttons, with the “Enter” button used to select options.
The generator features an automatic exercise mode. However, it will not exercise if it is already running in either automatic or manual mode. During exercise, the controller will only transfer to generator power if the utility power fails for a period of 10 seconds, at which point it will switch to automatic mode.
Battery Management and Monitoring
The generator’s battery charger operates as a “Smart Charger,” optimizing output to maximize battery life and ensuring safe charging levels. The LCD display will show a warning message when the battery requires servicing.
Warranty Information
Extended coverage is available for registered units with proof of purchase. This coverage applies to Generac, Guardian, and Centurion products but is not available for Corepower and EcoGen products or all international purchases. Contacting an independent authorized dealer provides additional information on accessories.
Preparing for Storage
When preparing the generator for storage, the following steps should be taken:
- Remove the spark plug(s).
- Spray a fogging agent into the threaded openings of the spark plug(s).
- Reinstall and tighten the spark plug(s).
Resetting After Battery Disconnection
If the battery is disconnected or dies, the exercise timer and current date and time must be reset.
Transfer Switch and Generator Operation
After completing maintenance or repairs, the following steps are required to prepare the generator for service:
- Turn on the utility power to the transfer switch.
- Set the control panel to AUTO.
The documentation reiterates the importance of running the generator with all appropriate panels in place, including during troubleshooting.
Conclusion
Generac automatic standby generators offer a convenient solution for backup power. Proper installation by qualified personnel, adherence to safety guidelines, and regular maintenance using genuine Generac parts are essential for ensuring reliable operation and maintaining warranty coverage. The system’s automatic features and battery management system contribute to its ease of use and long-term performance.

