Generac Guardian Series 16/20/22 kW Residential Standby Generators
Generac Guardian Series residential standby generators provide reliable backup power for homes during outages. These air-cooled gas engine generators offer various power outputs, including 16 kW, 20 kW, and 22 kW, ensuring essential appliances and systems remain operational.
Key Features and Inclusions
What's Included:
- True Power™ Electrical Technology
- Two-line LCD Multilingual Digital Evolution™ Controller (supports English, Spanish, French, Portuguese)
- Two Transfer Switch Options: 100 Amp Pre-Wired Switch or 200 Amp Smart Switch (details on page 4)
- Electronic Governor
- External Main Circuit Breaker, System Status & Maintenance Interval LED Indicators
- GFCI Duplex Outlet
- Sound Attenuated Enclosure
- Flexible Fuel Line Connector
- Composite Mounting Pad
- Natural Gas or LP Gas Operation
- 5 Year Limited Warranty
- Capability for installation within 18 inches (457 mm) of a building (subject to local codes and intake/vent placement)
Core Features:
- Innovative Design & Prototype Testing: Generac emphasizes rigorous testing for reliability and performance.
- True Power™ Electrical Technology: Delivers utility-quality power with less than 5% Total Harmonic Distortion (THD), suitable for sensitive electronics and micro-chip based appliances like variable speed HVAC systems.
- Test Criteria: Includes Prototype Tested, System Torsional Tested, NEMA MG1-22 Evaluation, and Motor Starting Ability.
- Solid-State, Frequency Compensated Voltage Regulation: Ensures optimized response to load changes and maximum motor starting capability with digital voltage regulation at ±1%.
- Single Source Service Response: Generac's dealer network provides comprehensive parts and service.
- Generac Transfer Switches: Designed for long life and reliability, ensuring total system compatibility.
Engine and Generator Benefits
Engine Features:
- Generac (OHVI) design for increased fuel efficiency and longer engine life.
- Quiet-Test™ mode for reduced sound and fuel consumption during routine exercise.
- "Spiny-lok" cast iron cylinder walls for durability.
- Electronic ignition/spark advance for smooth starting.
- Full pressure lubrication system for enhanced performance and longevity.
- Low oil pressure and high temperature shutdown protection to prevent engine damage.
- Extended oil change interval (up to 2 years/200 hours).
Generator Features:
- Revolving field and skewed stator for efficient power generation.
- Displaced phase excitation for maximum motor starting capability.
- Automatic voltage regulation (±1%) to prevent damaging voltage spikes.
- UL 2200 listed for safety and compliance.
Transfer Switch and Control Features
Transfer Switch Options:
- Fully Automatic: Transfers vital electrical loads to the energized source automatically.
- Pre-wired: Color-coded conduits for easier installation (pre-wired switches only).
- DPM Technology (Smart Switch only): Digital Power Management allows smart control of two air conditioners without additional hardware.
- Remote Mounting: Option for mounting near the existing distribution panel.
Evolution™ Controls:
- Auto/Manual/Off illuminated buttons for easy mode selection.
- Two-line LCD multilingual display for status and event logs (up to 50 occurrences).
- Sealed, raised buttons for weather resistance and ease of use.
- Utility and generator voltage sensing for clean power delivery.
- Adjustable utility interrupt delay to prevent nuisance startups.
- Engine warm-up and cool-down cycles for optimal operation.
- Programmable exerciser for regular engine maintenance (weekly/monthly options).
- Smart battery charger maintains battery health.
- Electronic governor for stable frequency (60 Hz).
Unit and Installation System
- SAE Weather Protective Enclosure: Sound-attenuated, protects against weather, withstands winds up to 150 mph. Features hinged locking roof panel and lift-out front for maintenance access. Finished with durable epoxy paint.
- Enclosed Critical Grade Muffler: Mounted internally for safety and reduced noise.
- Small, Compact, Attractive Design: Easy and appealing installation.
- 1 ft (305 mm) Flexible Fuel Line Connector: Absorbs vibration.
- Composite Mounting Pad: Eliminates the need for a concrete pad unless required by local codes.
Specifications
| Generator Model | 16 kW (006459-0, 006461-0, 006462-0, 006721-0) | 20 kW (006729-0, 006730-0) | 22 kW (006551-0, 006552-0) |
|---|---|---|---|
| Rated Maximum Continuous Power Capacity (LP) | 16,000 Watts* | 20,000 Watts* | 22,000 Watts* |
| Rated Maximum Continuous Power Capacity (NG) | 16,000 Watts* | 18,000 Watts* | 19,500 Watts* |
| Rated Voltage | 240 | 240 | 240 |
| Rated Maximum Continuous Load Current - 240 Volts (LP/NG) | 66.6/66.6 Amps | 83.3/75 Amps | 91.6/81.3 Amps |
| Total Harmonic Distortion | Less than 5% | Less than 5% | Less than 5% |
| Main Line Circuit Breaker | 65 Amp | 90 Amp | 100 Amp |
| Phase | 1 | 1 | 1 |
| Number of Rotor Poles | 2 | 2 | 2 |
| Rated AC Frequency | 60 Hz | 60 Hz | 60 Hz |
| Power Factor | 1.0 | 1.0 | 1.0 |
| Battery Requirement | Group 26R, 12 Volts and 525 CCA Minimum | Group 26R, 12 Volts and 525 CCA Minimum | Group 26R, 12 Volts and 525 CCA Minimum |
| Unit Weight (lb/kg) | 513/232.7 (Steel); 448/203.2 (Aluminum) | 516/234.1 | 526/238.6 |
| Dimensions (L x W x H) in/mm | 48 x 25 x 29 / 1218 x 638 x 732 | 48 x 25 x 29 / 1218 x 638 x 732 | 48 x 25 x 29 / 1218 x 638 x 732 |
| Sound Output (dB(A) at 23 ft / 7 m) - Normal Load** | 66 | 66 | 67 |
| Sound Output (dB(A) at 23 ft / 7 m) - Quiet-Test™ Mode** | 60 | 60 | 58 |
| Exercise Duration | 5 min | 5 min | 5 min |
| Engine Type | GENERAC OHVI V-TWIN | GENERAC OHVI V-TWIN | GENERAC OHVI V-TWIN |
| Number of Cylinders | 2 | 2 | 2 |
| Displacement | 992 cc | 999 cc | 999 cc |
| Cylinder Block | Overhead Valve | Aluminum w/ Cast Iron Sleeve | Aluminum w/ Cast Iron Sleeve |
| Valve Arrangement | Overhead Valve | Overhead Valve | Overhead Valve |
| Ignition System | Solid-state w/ Magneto | Solid-state w/ Magneto | Solid-state w/ Magneto |
| Governor System | Electronic | Electronic | Electronic |
| Compression Ratio | 9.5:1 | 9.5:1 | 9.5:1 |
| Starter | 12 Vdc | 12 Vdc | 12 Vdc |
| Oil Capacity Including Filter | Approx. 1.9 qt/1.8 L | Approx. 1.9 qt/1.8 L | Approx. 1.9 qt/1.8 L |
| Operating rpm | 3,600 | 3,600 | 3,600 |
| Fuel Consumption (Natural Gas) ft³/hr (m³/hr) - 1/2 Load | 193 (5.47) | 205 (5.8) | 184 (5.21) |
| Fuel Consumption (Natural Gas) ft³/hr (m³/hr) - Full Load | 312 (8.83) | 308 (8.72) | 281 (7.96) |
| Fuel Consumption (Liquid Propane) ft³/hr (gal/hr) [l/hr] - 1/2 Load | 72.4 (1.99) [7.53] | 75.6 (2.08) [7.87] | 83 (2.16) [8.16] |
| Fuel Consumption (Liquid Propane) ft³/hr (gal/hr) [l/hr] - Full Load | 130 (3.57) [13.53] | 140 (3.85) [14.57] | 127 (3.68) [13.99] |
Controls Summary:
- 2-Line Plain Text Multilingual LCD Display: Simple user interface with status and event logs.
- Mode Buttons: Auto, Manual, Off.
- Standard Features: Ready to Run/Maintenance Messages, Engine Run Hours Indication, Programmable start delay, Utility voltage sensing, Generator voltage sensing, Utility interrupt delay, Engine warm-up, Engine cool-down, Programmable exerciser, Smart battery charger, Electronic governor.
- Shutdown Protection: Automatic low oil pressure/high oil temperature, overcrank/overspeed, high engine temperature, internal fault/incorrect wiring.
- Field Upgradable Firmware.
Transfer Switch Options
Pre-wired Features (available on Steel 16 kW models only):
- Electrically operated, mechanically-held contacts for fast, positive connections.
- Rated for all classes of load (100% equipment rated, inductive and resistive).
- 2 pole, 250 VAC contactors.
- 30 millisecond transfer time.
- Dual coil design.
- Silver plated main contacts to resist welding.
- NEMA 1 (indoor rated) enclosure.
- Includes pre-wired whips for connection to the generator and electrical panel.
Smart Switch Features:
- Includes Digital Power Management Technology (DPM) standard.
- Intelligently manages two air conditioner loads without additional hardware.
- Can manage up to four additional large loads with Power Management Modules (PMM).
- Electrically operated, mechanically-held contacts.
- Rated for all classes of load.
- 2 pole, 250 VAC contactors.
- Service equipment rated, dual coil design.
- Rated for aluminum and copper conductors.
- NEMA/UL 3R aluminum outdoor enclosure.
- Silver plated main contacts.
Switch Specifications Table:
| Feature | Pre-wired (100 Amp) | Smart Switch (200 Amp) |
|---|---|---|
| Model | 006461-0 (16 kW) | 006462-0 (16 kW) / 006729-0 (20 kW) / 006551-0 (22 kW) |
| No. of Poles | 2 | 2 |
| Current Rating (Amps) | 100 | 200 |
| Voltage Rating (VAC) | 120/240, 1Ø | 120/240, 1Ø |
| Utility Voltage Monitor (Fixed) Pick-up / Dropout | 80% / 60% | 80% / 60% |
| Return to Utility* | approx. 15 sec. | approx. 13 sec. |
| Exercise weekly for 12 minutes* | Standard | Standard |
| UL Listed | Standard | Standard |
| Enclosure Type | NEMA 1 (Indoor) | NEMA/UL 3R (Aluminum Outdoor) |
| Withstand Rating (Amps) | 10,000 | 22,000 |
| Lug Range | 2/0 - #14 | 250 MCM - #6 |
Available Accessories
- Mobile Link™: Remote monitoring via internet connection (email/text notifications).
- 26R Wet Cell Battery: Recommended battery for starting.
- Cold Weather Kit: For optimal battery and oil temperatures below 32°F (0°C).
- Auxiliary Transfer Switch Contact Kit: To lock out single large electrical loads.
- Fascia Base Wrap Kit: For a sleek appearance and protection from rodents/insects.
- Paint Kit: For touching up enclosure scratches.
- Scheduled Maintenance Kit: For complete routine maintenance.
- Wireless Remote Monitor: Provides instant status information wirelessly.
- PMM Starter Kit: Enables use of Power Management Modules (PMMs).
- Power Management Module (50 Amps): Enhances power management capabilities with Smart Switch.
Dimensions and UPCs
Generator Dimensions:
Left Side View: Height: 731.9 mm [28.8 in], Width: 637.6 mm [25.1 in], Depth: 642 mm [25.3 in]
Front View: Height: 1218 mm [47.9 in], Width: 1226 mm [48.3 in]
Model and UPC Codes:
| Model | UPC |
|---|---|
| 006459-0 | 696471064599 |
| 0064610 | 696471064612 |
| 006721-0 | 696471067217 |
| 006729-0 | 696471067293 |
| 006730-0 | 696471067309 |
| 006551-0 | 696471065510 |
| 006552-0 | 696471065527 |
| 006462-0 | 696471064629 |
Note: Dimensions shown are approximate. Refer to the installation manual for exact dimensions. Do not use these dimensions for installation purposes.
