®
20/22/24 kW
TM
GUARDIAN® SERIES
20/22/24 kW
Residential Standby Generators
Air-Cooled Gas Engine
1 of 6
INCLUDES:
True Power™ Electrical Technology
Two-line multilingual digital LCD Evolution™ controller
(English/Spanish/French/Portuguese)
200 amp service rated transfer switch available
Electronic governor
Standard Wi-Fi® connectivity
System status & maintenance interval LED indicators
Sound attenuated enclosure
Flexible fuel line connector
Natural gas or LP gas operation
5 Year limited warranty
Listed and labeled by the Southwest Research Institute allowing
installation as close as 18 in (457 mm) to a structure.*
*Must be located away from doors, windows, and fresh air intakes and in
accordance with local codes.
https://assets.swri.org/library/DirectoryOfListedProducts/
ConstructionIndustry/973_DoC_204_13204-01-01_Rev9.pdf
Standby Power Rating
G007038-1, G007039-1, G007038-3, G007039-3 (Aluminum - Bisque) - 20 kW 60 Hz
G007042-2, G007043-2, G007042-3, G007043-3 (Aluminum - Bisque) - 22 kW 60 Hz
Note: CETL or CUL certification only applies to unbundled units and units packaged
with limited circuit switches. Units packaged with the Smart Switch are ETL or UL
certified in the USA only.
G007209-0, G007210-0 (Aluminum - Bisque) - 24 kW 60 Hz
or
FEATURES
INNOVATIVE ENGINE DESIGN & RIGOROUS TESTING are at the heart of Gen-
erac’s success in providing the most reliable generators possible. Generac’s GForce engine lineup offers added peace of mind and reliability for when it’s needed
the most. The G-Force series engines are purpose built and designed to handle the
rigors of extended run times in high temperatures and extreme operating conditions.
TRUE POWER™ ELECTRICAL TECHNOLOGY: Superior harmonics and sine wave
form produce less than 5% Total Harmonic Distortion for utility quality power. This
allows confident operation of sensitive electronic equipment and micro-chip based
appliances, such as variable speed HVAC systems.
TEST CRITERIA:
N
PROTOTYPE TESTED
SYSTEM TORSIONAL TESTED
®
MOBILE LINK
generators, Mobile Link Wi-Fi allows users to monitor generator status from anywhere in the world using a smartphone, tablet, or PC. Easily access information such
as the current operating status and maintenance alerts. Users can connect an
account to an authorized service dealer for fast, friendly, and proactive service. With
Mobile Link, users are taken care of before the next power outage.
CONNECTIVITY: FREE with select Guardian Series Home standby
EMA MG1-22 EVALUATION
MOTOR STARTING ABILITY
SOLID-STATE, FREQUENCY COMPENSATED VOLTAGE REGULATION: This
state-of-the-art power maximizing regulation system is standard on all Generac models. It provides optimized FAST RESPONSE to changing load conditions and MAXIMUM MOTOR STARTING CAPABILITY by electronically torque-matching the surge
loads to the engine. Digital voltage regulation at ±1%.
SINGLE SOURCE SERVICE RESPONSE from Generac’s extensive dealer network
provides parts and service know-how for the entire unit, from the engine to the smallest electronic component.
GENERAC TRANSFER SWITCHES: Long life and reliability are synonymous with
GENERAC POWER SYSTEMS. One reason for this confidence is that the GENERAC
product line is offered with its own transfer systems and controls for total system
compatibility.
PWRVIEW™ TRANSFER SWITCH: The Generac PWRview Automatic Transfer
Switch integrates the PWRview energy monitor to provide real-time energy consumption data that can help lower a home’s electricity bill. Using a convenient
mobile app, homeowners can access energy usage and alert information while under
utility power or generator power. The PWRview energy monitor is a simple to use and
low cost tool which helps save money over the life of the generator. Included with
model G007210-0.
®
20/22/24 kW Features and Benefits
Engine
20/22/24 kW
2 of 6
Generator
Transfer Switch (if applicable)
Generac G-Force design Maximizes engine “breathing” for increased fuel efficiency. Plateau honed cylinder walls and plasma moly
rings help the engine run cooler, reducing oil consumption and resulting in longer engine life.
“Spiny-lok” cast iron cylinder walls Rigid construction and added durability provide long engine life.
Electronic ignition/spark advance These features combine to assure smooth, quick starting every time.
Full pressure lubrication system Pressurized lubrication to all vital bearings means better performance, less maintenance, and longer engine
life. Now featuring up to a 2 year/200 hour oil change interval.
Low oil pressure shutdown system Shutdown protection prevents catastrophic engine damage due to low oil.
High temperature shutdown Prevents damage due to overheating.
Revolving field Allows for a smaller, light weight 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 Regulating output voltage to ±1% prevents damaging voltage spikes.
UL 2200 listed For your safety.
Fully automatic Transfers vital electrical loads to the energized source of power.
NEMA 3R Can be installed inside or outside for maximum flexibility.
Integrated load management technology Capability to manage additional loads for efficient power management.
Remote mounting Mounts near an existing distribution panel for simple, low-cost installation.
PWRview Transfer Switch (if applicable)
PWRview energy monitor Energy usage at-a-glance.
Ability to view real-time energy consumption data Better understand the home’s energy profile.
PWRview mobile app Access daily energy intelligence and insights.
Evolution™ Controls
AUTO/MANUAL/OFF illuminated buttons Selects the operating mode and provides easy, at-a-glance status indication in any condition.
Two-line multilingual LCD Provides homeowners easily visible logs of history, maintenance, and events up to 50 occurrences.
Sealed, raised buttons Smooth, weather-resistant user interface for programming and operations.
Utility voltage sensing Constantly monitors utility voltage, setpoints 65% dropout, 80% pick-up, of standard voltage.
Generator voltage sensing Constantly monitors generator voltage to verify the cleanest power delivered to the home.
Utility interrupt delay Prevents nuisance start-ups of the engine, adjustable 2-1500 seconds from the factory default setting of 5
seconds by a qualified dealer.
Engine warm-up Verifies engine is ready to assume the load, setpoint approximately 5 seconds.
Engine cool-down Allows engine to cool prior to shutdown, setpoint approximately 1 minute.
Programmable exercise Operates engine to prevent oil seal drying and damage between power outages by running the generator for
5 minutes every other week. Also offers a selectable setting for weekly or monthly operation providing
flexibility and potentially lower fuel costs to the owner.
Smart battery charger Delivers charge to the battery only when needed at varying rates depending on outdoor air temperature.
Compatible with lead acid and AGM-style batteries.
Main line circuit breaker Protects generator from overload.
Electronic governor Maintains constant 60 Hz frequency.
®
20/22/24 kW Features and Benefits
Unit
SAE weather protective enclosure Sound attenuated enclosures ensure quiet operation and protection against mother nature, withstanding
winds up to 150 mph (241 km/h). Hinged key locking roof panel for security. Lift-out front for easy access
to all routine maintenance items. Electrostatically applied textured epoxy paint for added durability.
Enclosed critical grade muffler Quiet, critical grade muffler is mounted inside the unit to prevent injuries.
Small, compact, attractive Makes for an easy, eye appealing installation, as close as 18 in (457 mm) away from a structure.
Installation System
14 in (35.6 cm) flexible fuel line connector Listed ANSI Z21.75/CSA 6.27 outdoor appliance connector for the required connection to the gas supply
piping.
Integral sediment trap Meets IFGC and NFPA 54 installation requirements.
Connectivity (Wi-Fi equipped models only)
Ability to view generator status Monitor generator with a smartphone, tablet, or computer at any time via the Mobile Link application for
complete peace of mind.
Ability to view generator Exercise/Run and Total Hours Review the generator's complete protection profile for exercise hours and total hours.
Ability to view generator maintenance information Provides maintenance information for the specific model generator when scheduled maintenance is due.
Monthly report with previous month’s activity Detailed monthly reports provide historical generator information.
Ability to view generator battery information Built in battery diagnostics displaying current state of the battery.
Weather information Provides detailed local ambient weather conditions for generator location.
20/22/24 kW
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®
20/22/24 kW Specifications
Generator
Model G007038-1
20/22/24 kW
Rated maximum continuous power capacity (LP) 20,000 Watts* 22,000 Watts* 20,000 Watts* 22,000 Watts* 24,000 Watts*
Rated maximum continuous power capacity (NG) 18,000 Watts* 19,500 Watts* 18,000 Watts* 19,500 Watts* 21,000 Watts*
Rated voltage 240
4 of 6
Rated maximum continuous load current – 240 volts (LP/NG) 83.3 / 75.0 91.7 / 81.3 83.3 / 75.0 91.7 / 81.3 100 / 87.5
Total Harmonic Distortion Less than 5%
Main line circuit breaker 90 amp 100 amp 90 amp 100 amp 100 amp
Phase 1
Number of rotor poles 2
Rated AC frequency 60 Hz
Power factor 1.0
Battery requirement (not included) 12 Volts, Group 26R 540 CCA minimum or Group 35AGM 650 CCA minimum
Unit weight (lb / kg) 448 / 203 466 / 211 436 / 198 445 / 202 455 / 206
Dimensions (L x W x H) in / cm 48 x 25 x 29 / 121.9 x 63.5 x 73.7
Sound output in dB(A) at 23 ft (7 m) with generator operating at normal load** 67 67 67 67 67
Sound output in dB(A) at 23 ft (7 m) with generator in Quiet-Test™ low-speed exercise mode** 55 57 55 57 57
Exercise duration 5 min
Engine
Engine type 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
Natural gas ft³/hr (m³/hr)
1/2 Load
Full Load
Liquid propane ft
1/2 Load
Full Load
Note: Fuel pipe must be sized for full load. Required fuel pressure to generator fuel inlet at all load ranges - 3.5–7 in water column (0.87–1.74 kPa) for NG, 10–12 in water column (2.49–2.99 kPa) for LP
gas. For BTU content, multiply ft
Controls
Two-line plain text multilingual LCD Simple user interface for ease of operation.
Mode buttons: AUTO Automatic start on utility failure. Weekly, Bi-weekly, or Monthly selectable exerciser.
MANUAL Start with starter control, unit stays on. If utility fails, transfer to load takes place.
OFF Stops unit. Power is removed. Control and charger still operate.
Ready to Run/Maintenance messages Standard
Engine run hours indication Standard
Programmable start delay between 2–1500 seconds Standard (programmable by dealer only)
Utility Voltage Loss/Return to Utility adjustable (brownout setting) From 140-171 V / 190-216 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 rest (90 sec maximum duration).
Starter lock-out Starter cannot re-engage until 5 sec after engine has stopped.
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
**Sound levels are taken from the front of the generator. Sound levels taken from other sides of the generator may be higher depending on installation parameters. Rating definitions - Standby: Applicable for supplying
emergency power for the duration of the utility power outage. No overload capability is available for this rating. (All ratings in accordance with BS5514, ISO3046 and DIN6271). * Maximum kilovolt amps and current are
subject to and limited by such factors as fuel BTU/megajoule content, ambient temperature, altitude, engine power and condition, etc. Maximum power decreases approximately 3.5% for each 1,000 ft (304.8 m) above sea
level; and also will decrease approximately 1% for each 10 °F (6 °C) above 60 °F (16 °C).
G007039-1
(20 kW)
204 (5.78)
3
/hr (gal/hr) [L/hr]
3
/hr x 2500 (LP) or ft3/hr x 1000 (NG). For Megajoule content, multiply m³/hr x 93.15 (LP) or m³/hr x 37.26 (NG).
301 (8.52)
87 (2.37) [8.99]
130 (3.56) [13.48]
G007042-2
G007043-2
(22 kW)
228 (6.46)
327 (9.26)
92 (2.53) [9.57]
142 (3.90) [14.77]
G007038-3
G007039-3
(20 kW)
164 (4.64)
287 (8.13)
86 (2.36) [8.95]
136 (3.74) [14.15]
G007042-3
G007043-3
(22 kW)
92 (2.53) [9.57]
142 (3.90) [14.77]
203 (5.75)
306 (8.66)
G007209-0
G007210-0
(24 kW)
®
H2
DEPTH
H1
W2
W1
20/22/24 kW Switch Options
H2
DEPTH
H1
W2
W1
Service Rated Automatic Transfer Switch Features
Intelligently manages up to four air conditioner loads with no additional hardware.
Up to eight additional large (240 VAC) loads can be managed when used in conjunction
with Smart Management Modules (SMMs).
Electrically operated, mechanically-held contacts for fast, clean connections.
Rated for all classes of load, 100% equipment rated, both inductive and resistive.
2-pole, 250 VAC contactors.
Service equipment rated, dual coil design.
Rated for both aluminum and copper conductors.
Main contacts are silver plated or silver alloy to resist welding and sticking.
NEMA/UL 3R aluminum outdoor enclosure allows for indoor or outdoor mounting flexibility.
Dimensions
200 Amps 120/240, 1ø
Open Transition Service Rated
Height Width
H1 H2 W1 W2
in 26.8 30.1 10.5 13.5 6.9
cm 67.95 76.43 26.67 34.18 17.5
Wire Ranges
Conductor Lug Neutral Lug Ground Lug
250 MCM - #6 350 MCM - #6 2/0 - #14
Depth
Model
No. of poles 2
Current rating (amps) 200
Voltage rating (VAC) 120/240, 1Ø
Utility voltage monitor (fixed)*
-Pick-up
-Dropout
Return to Utility* Approx. 13 sec
Exercises bi-weekly for 5 minutes* Standard
ETL or UL listed Standard
Enclosure type NEMA/UL 3R
Circuit breaker protected 22,000
Lug range 250 MCM - #6
*Function of Evolution controller
Exercise can be set to weekly, bi-weekly, or monthly
G007039-1, G007039-3 (20 kW)
G007043-2, G007043-3 (22 kW)
80%
65%
20/22/24 kW
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PWRview Automatic Transfer Switch Features
Integrated PWRview monitor provides real-time energy usage data through PWRview app.
Intelligently manages up to four air conditioner loads with no additional hardware.
Up to eight additional large (240 VAC) loads can be managed when used in conjunction
with Smart Management Modules (SMMs).
Electrically operated, mechanically-held contacts for fast, clean connections.
Rated for all classes of load, 100% equipment rated, both inductive and resistive.
2-pole, 250 VAC contactors.
Service equipment rated, dual coil design.
Rated for both aluminum and copper conductors.
Main contacts are silver plated or silver alloy to resist welding and sticking.
NEMA 3R aluminum outdoor enclosure allows for indoor or outdoor mounting flexibility.
Heavy duty Generac Contactor is an ETL recognized device.
Dimensions
200 Amps 120/240, 1ø
Open Transition Service Rated
in 26.8 30.1 10.5 13.5 6.9
cm 67.95 76.43 26.67 34.18 17.5
Wire Ranges
Conductor Lug Neutral Lug Ground Lug
250 MCM - #6 350 MCM - #6 2/0 - #14
Height Width
H1 H2 W1 W2
Depth
Model
No. of poles 2
Current rating (amps) 200
Voltage rating (VAC) 120/240, 1Ø
Utility voltage monitor (fixed)*
-Pick-up
-Dropout
Return to Utility* Approx. 13 sec
Exercises bi-weekly for 5 minutes* Standard
ETL or UL listed Standard
Enclosure type NEMA 3R
Circuit breaker protected 22,000
Lug range 250 MCM - #6
*Function of Evolution controller
Exercise can be set to weekly, bi-weekly, or monthly
G007210-0 (24 kW)
80%
65%
®
Dimensions & UPCs
648 mm
[25.5 in]
727.2 mm
[28.6 in]
637.6 mm
[25.1 in]
1232 mm
[48.5 in
]
1218 mm
[48.0 in]
LEFT SIDE VIEW FRONT VIEW
®
20/22/24 kW Available Accessories
Model # Product Description
20/22/24 kW
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
G007101-0 Battery Pad Warmer Pad warmer rests under the battery. Recommended for use if temperature regularly falls below 0 °F (-18 °C). (Not nec-
6 of 6
G007102-0 Oil Warmer Oil warmer slips directly over the oil filter. Recommended for use if temperature regularly falls below 0 °F (-18 °C).
G007103-1 Breather Warmer Breather warmer is for use in extreme cold weather applications. For use with Evolution controllers only in climates where
G005621-0 Auxiliary Transfer Switch
G007027-0 - Bisque Fascia Base Wrap Kit
G005703-0 - Bisque Touch-Up Paint Kit If the generator enclosure is scratched or damaged, it is important to touch up the paint to protect from future corrosion.
G006485-0 Scheduled Maintenance Kit Generac's scheduled maintenance kit provides all the items necessary to perform complete routine maintenance on a
G007005-0 Wi-Fi LP Tank Fuel Level
G007000-0 (50 amp)
G007006-0
(100 amp)
G007169-0 - 4G LTE
G007170-0 - Wi-Fi/
Ethernet
G007220-0 - Bisque Base Plug Kit Base plugs snap into the lifting holes on the base of air-cooled home standby generators. This offers a sleek, contoured
use with all air-cooled standby product (excluding PowerPact
®
).
essary for use with AGM-style batteries).
heavy icing occurs.
The auxiliary transfer switch contact kit allows the transfer switch to lock out a single large electrical load that may not be
Contact Kit
needed. Not compatible with 50 amp pre-wired switches.
The fascia base wrap snaps together around the bottom of the new air-cooled generators. This offers a sleek, contoured
(Standard on 22/24 kW)
appearance as well as offering protection from rodents and insects by covering the lifting holes located in the base.
The touch-up paint kit includes the necessary paint to correctly maintain or touch up a generator enclosure.
Generac automatic standby generator (oil not included).
The Wi-Fi enabled LP tank fuel level monitor provides constant monitoring of the connected LP fuel tank. Monitoring the
Monitor
LP tank's fuel level is an important step in verifying the generator is ready to run during an unexpected power failure. Status alerts are available through a free application to notify users when the LP tank is in need of a refill.
Smart Management Module Smart Management Modules (SMM) are used to optimize the performance of a standby generator. It manages large elec-
trical loads upon startup and sheds them to aid in recovery when overloaded. In many cases, using SMM’s can reduce
the overall size and cost of the system.
Mobile Link® Cellular
Accessories
The Mobile Link family of Cellular Accessories allow users to monitor generator status from anywhere in the world, using
a smart phone, tablet, or PC. Easily access information such as the current operating status and maintenance alerts. Users can connect an account with an authorized service dealer for fast, friendly, and proactive service. With Mobile Link,
users are taken care of before the next power outage.
appearance, as well as offers protection from rodents and insects by covering the lifting holes located in the base. Kit
contains four plugs, sufficient for use on a single air-cooled home standby generator.
Model UPC
G007038-1 696471074185
G007038-3 696471074185
G007039-1 696471074192
G007039-3 696471074192
G007042-2 696471074208
G007042-3 696471074208
G007043-2 696471074215
G007043-3 696471074215
G007209-0 696471071511
G007210-0 696471078220
Dimensions shown are approximate. See installation manual for exact dimensions. DO NOT USE THESE DIMENSIONS FOR INSTALLATION PURPOSES.
Generac Power Systems, Inc. • S45 W29290 HWY. 59, Waukesha, WI 53189 • generac.com
©2020 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice. Part No. A0000937814 Rev. B 07/30/2020
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