Generac 20 kW Guardian Series Standby Generator
Residential & Commercial Standby Generators
Air-Cooled Gas Engine
Product Overview
The Generac 20 kW Guardian Series standby generator is designed for reliable power generation for both residential and commercial applications. It features an air-cooled gas engine and offers advanced technology for efficient and dependable operation.
Key Inclusions:
- True Power™ Electrical Technology
- Two-Line LCD Multilingual Digital Evolution™ Controller (English/Spanish/French/Portuguese)
- Electronic Governor
- System Status & Maintenance Interval LED Indicators
- Standard Wi-Fi™ Remote Monitoring
- Sound Attenuated Enclosure
- Flexible Fuel Line Connector
- Direct-To-Dirt Composite Mounting Pad
- Natural Gas or LP Gas Operation
- 5 Year Limited Warranty
The unit is listed and labeled by the Southwest Research Institute, allowing installation as close as 18 inches (457 mm) to a structure, provided it is located away from doors, windows, and fresh air intakes, and in accordance with local codes. [Source: https://assets.swri.org/library/DirectoryOfListedProducts/ConstructionIndustry/973_DOC_204_13204-01-01_Rev8.pdf]
Features
Innovative Engine Design & Rigorous Testing
Generac's G-Force engine lineup is purpose-built and designed to handle extended run times in high temperatures and extreme operating conditions, ensuring reliability.
True Power™ Electrical Technology
Provides utility-quality power with less than 5% Total Harmonic Distortion (THD), enabling confident operation of sensitive electronic equipment and micro-chip based appliances like variable speed HVAC systems.
Test Criteria
- Prototype Tested
- System Torsional Tested
- NEMA MG1-22 Evaluation Motor Starting Ability
Solid-State, Frequency Compensated Voltage Regulation
This system offers optimized fast response to changing load conditions and maximum motor starting capability by electronically torque-matching surge loads to the engine. It provides digital voltage regulation at ±1%.
Single Source Service Response
Generac's extensive dealer network provides parts and service expertise for the entire unit.
Generac Transfer Switches
Generac's transfer systems and controls ensure total system compatibility and reliability.
Mobile Link™ Remote Monitoring
Included free with every Guardian Series Home standby generator, this feature allows monitoring of the generator's status from anywhere globally via a smartphone, tablet, or PC. It provides current operating status, maintenance alerts, and can connect to an authorized service dealer.
Engine Details
- Generac G-Force design: Maximizes fuel efficiency, runs cooler, reduces oil consumption, and offers a longer engine life with an updated oil change interval (up to 2 years/200 hours).
- Quiet-Test™: Significantly reduces sound output and fuel consumption during bi-weekly exercise.
- "Spiny-lok" cast iron cylinder walls: Provide rigid construction and added durability for long engine life.
- Electronic ignition/spark advance: Ensures smooth, quick starting.
- Full pressure lubrication system: Delivers lubrication to all vital bearings for better performance and less maintenance.
- Low oil pressure shutdown system: Prevents catastrophic engine damage due to low oil.
- High temperature shutdown: Prevents engine damage due to overheating.
Generator Details
- Revolving field: Allows for a smaller, lighter unit that operates 25% more efficiently than a revolving armature generator.
- Skewed stator: Produces a smooth output waveform for compatibility with electronic equipment.
- Displaced phase excitation: Maximizes motor starting capability.
- Automatic voltage regulation: Regulates output voltage to ±1%, preventing damaging voltage spikes.
- UL 2200 listed: For user safety.
Evolution™ Controls
- Two-line LCD multilingual display: Provides easily visible logs of history, maintenance, and events (up to 50 occurrences).
- Auto/Manual/Off illuminated buttons: Selects operating mode and provides easy, at-a-glance status indication.
- Sealed, raised buttons: Offer a smooth, weather-resistant user interface for programming and operations.
- Utility voltage sensing: Constantly monitors utility voltage (defaults 132V dropout, 175V pickup).
- Generator voltage sensing: Constantly monitors generator voltage to ensure the cleanest power delivered.
- Utility interrupt delay: Prevents nuisance starts (adjustable 2-1500 seconds).
- Engine warm-up: Ensures engine is ready to assume the load (approx. 5 seconds).
- Engine cool-down: Allows engine to cool prior to shutdown (approx. 1 minute).
- Programmable exercise: Operates engine to prevent oil seal drying (5 minutes every other week, weekly or monthly options available).
- Smart battery charger: Delivers charge only when needed at varying rates, compatible with lead acid and AGM batteries.
- Electronic governor: Maintains constant 60 Hz frequency.
Unit Design
- SAE weather protective enclosure: Ensures quiet operation and protection against weather, withstanding winds up to 150 mph. Features a hinged key locking roof panel for security and a lift-out front for maintenance access. Finished with electrostatically applied textured epoxy paint for durability.
- Enclosed critical grade muffler: Mounted inside the unit to prevent injuries.
- Small, compact, attractive: Designed for easy installation, allowing placement as close as 18 inches from a building.
Specifications
Generator
| Attribute | Value |
|---|---|
| Model | G007077-1 |
| Rated Maximum Continuous Power Capacity (LP) | 20,000 Watts* |
| Rated Maximum Continuous Power Capacity (NG) | 17,000 Watts* |
| Rated Voltage | 208 |
| Rated Maximum Continuous Load Current - 208 Volts (LP/NG) | 69.4/59.0 A |
| Total Harmonic Distortion | Less than 5% |
| Main Line Circuit Breaker | 80 Amp |
| Phase | 3 |
| Number of Rotor Poles | 2 |
| Rated AC Frequency | 60 Hz |
| Power Factor | 0.8 |
| Battery Requirement (not included) | 12 Volts, Group 26R 540 CCA Minimum or Group 35AGM 650 CCA Minimum |
| Unit Weight (lb/kg) | 466/211 |
| Dimensions (L x W x H) in/mm | 48 x 25 x 29 / 1218 x 638 x 732 |
| Sound output in dB(A) at 23 ft (7 m) with generator operating at normal load** | 67 |
| Sound output in dB(A) at 23 ft (7 m) with generator in Quiet-Test™ low-speed exercise mode** | 58 |
| Exercise duration | 5 min |
Engine
| Attribute | Value |
|---|---|
| Type of Engine | GENERAC G-Force 1000 Series |
| Number of Cylinders | 2 |
| Displacement | 999 cc |
| Cylinder Block | Aluminum w/ Cast Iron Sleeve |
| Valve Arrangement | Overhead Valve |
| Ignition System | Solid-state w/ Magneto |
| Governor System | Electronic |
| Compression Ratio | 9.5:1 |
| Starter | 12 VDC |
| Oil Capacity Including Filter | Approx. 1.9 qt/1.8 L |
| Operating rpm | 3,600 |
Fuel Consumption
| Fuel Type | Load | Consumption (ft³/hr) | Consumption (gal/hr) [l/hr] |
|---|---|---|---|
| Natural Gas | 1/2 Load | 219 (6.20) | - |
| Natural Gas | Full Load | 307 (8.69) | - |
| Liquid Propane | 1/2 Load | 87 (2.39) | 9.03 [9.03] |
| Liquid Propane | Full Load | 130 (3.56) | 13.48 [13.48] |
Note: Fuel pipe must be sized for full load. Required fuel pressure to generator fuel inlet for natural gas: 3.5-7" water column (7-13 mm mercury). For LP gas: 10-12" water column (19-22 mm mercury). Maximum power decreases approximately 3.5% for each 1,000 feet above sea level and 1% for each 10°F above 60°F.
Controls
- Two-Line Plain Text Multilingual LCD Display: Simple user interface for ease of operation.
- Mode Buttons (Auto, Manual, Off): Automatic start on utility failure; 7-day exerciser.
- Ready to Run/Maintenance Messages: Start with starter control; unit stays on. If utility fails, transfer to load takes place.
- Engine Run Hours Indication: Stops unit; power removed; control and charger still operate.
- Programmable start delay: Standard (programmable by dealer only).
- Utility Voltage Loss/Return to Utility: Adjustable (Brownout Setting) from 121-148 V / 175-187 V.
- Future Set Capable Exerciser/Exercise Set Error Warning: Standard.
- Run/Alarm/Maintenance Logs: 50 Events Each.
- Engine Start Sequence: Cyclic cranking: 16 sec on, 7 sec rest (90 sec maximum duration). Starter cannot re-engage until 5 sec after engine has stopped.
- Starter Lock-out: Standard.
- Smart Battery Charger: Standard.
- Charger Fault/Missing AC Warning: Standard.
- Low Battery/Battery Problem Protection and Battery Condition Indication: Standard.
- Automatic Voltage Regulation with Over and Under Voltage Protection: Standard.
- Under-Frequency/Overload/Stepper Overcurrent Protection: Standard.
- Safety Fused/Fuse Problem Protection: Standard.
- Automatic Low Oil Pressure/High Oil Temperature Shutdown: Standard.
- Overcrank/Overspeed (@72 Hz)/rpm Sense Loss Shutdown: Standard.
- High Engine Temperature Shutdown: Standard.
- Internal Fault/Incorrect Wiring Protection: Standard.
- Common External Fault Capability: Standard.
- Field Upgradable Firmware: Standard.
Installation System
- 1 ft (305 mm) flexible fuel line connector: Absorbs generator vibration when connected to rigid pipe.
- Direct-to-dirt composite mounting pad: Complex lattice design prevents settling or sinking of the generator system.
- Integral sediment trap: Prevents particles and moisture from entering the fuel regulator and engine, prolonging engine life.
Remote Monitoring
Monitor your generator via your smartphone, tablet, or computer at any time using the Mobile Link application for complete peace of mind.
- Ability to view generator status
- Ability to view generator Exercise/Run and Total Hours
- Ability to view generator maintenance information
- Monthly report with previous month's activity
- Ability to view generator battery information
The Wi-Fi enabled LP fuel level monitor provides constant monitoring of the connected LP fuel tank's fuel level, ensuring the generator is ready to run. Status alerts are available through a free application.
Available Accessories
| Model # | Product | Description |
|---|---|---|
| G005819-0 | 26R Wet Cell Battery | Every standby generator requires a battery to start the system. Generac offers the recommended 26R wet cell battery for use with all air-cooled standby products. |
| G007101-0 | Battery Pad Warmer | The pad warmer rests under the battery. Recommended for use if the temperature regularly falls below 0°F (-18°C). (Not necessary for use with AGM-style batteries). |
| G007102-0 | Oil Warmer | Oil warmer slips directly over the oil filter. Recommended for use if the temperature regularly falls below 0°F (-18°C). |
| G007103-1 | Breather Warmer | For use in extreme cold weather applications. For use with Evolution controllers only in climates where heavy icing occurs. |
| G007027-0 - Bisque | Fascia Base Wrap Kit | The fascia base wrap snaps together around the bottom of new air-cooled generators, offering a sleek appearance and protection from rodents and insects by covering lifting holes in the base. |
| G005703-0 - Bisque | Paint Kit | Includes necessary paint to properly maintain or touch up a generator enclosure if scratched or damaged, protecting from future corrosion. |
| G006485-0 | Scheduled Maintenance Kit | Provides all hardware necessary to perform complete routine maintenance on a Generac automatic standby generator. |
| G007005-0* | Wi-Fi LP Fuel Level Monitor | Provides constant monitoring of the connected LP fuel tank's fuel level. Status alerts are available through a free application to notify when the LP tank needs a refill. (*Only applicable for the United States.) |
Dimensions and UPC
Dimensions shown are approximate. Refer to the installation manual for exact dimensions. DO NOT USE THESE DIMENSIONS FOR INSTALLATION PURPOSES.
Left Side View: Height approximately 1218 mm (48.0 in), Width approximately 638 mm (25.1 in), Depth approximately 732 mm (28.6 in).
Front View: Height approximately 1232 mm (48.5 in), Width approximately 648 mm (25.5 in), Depth approximately 1218 mm (48.0 in).
| Model | UPC |
|---|---|
| G007077-1 | 696471074352 |
Generac Power Systems, Inc. S45 W29290 HWY. 59, Waukesha, WI 53189 generac.com
©2018 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice. Part No. 10000003872-F 4/20/18
