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Generac Guardian 20kW Standby Generator
Pre Packaged with 200 Amp Service Rated ATS
Model: 6244

FEATURES

  • INNOVATIVE DESIGN & PROTOTYPE TESTING are key components of GENERAC’S success in “IMPROVING POWER BY DESIGN.” But it

    doesn’t stop there. Total commitment to component testing, reliability testing, environmental testing, destruction and life testing, plus testing to applicable CSA, NEMA, EGSA, and other standards, allows you to choose GENERAC POWER SYSTEMS with the confidence that these systems will provide superior performance.

  • 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:

 PROTOTYPE TESTED  NEMA MG1-22 EVALUATION

 SYSTEM TORSIONAL TESTED  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 includes its own transfer systems and controls for total system compatibility.

14/17/20 kW                                                                                 
features and benefits

Engine
•Generac (OHVI) design Maximizes engine “breathing” for increased fuel efficiency. Plateau honed cylinder walls and plasma moly rings helps the engine run cooler, reducing oil consumption resulting in longer engine life.
•  Quiet-Test™ (17 & 20 kW units only) Greatly reduces sound output and fuel consumption during weekly exercise, compared to other brands.
•“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.
Generator
•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 Regulates the output voltage to ±1% prevents damaging voltage spikes.
•UL 2200 listed For your safety.
Transfer Switch
•Fully automatic Transfers your vital electrical loads to the energized source of power.
•Pre-wired, color-coded conduits (Pre-wired switches only) Ensures the easiest, trouble-free installation.
• DPM Technology (Smart Switch only) Digital Power Management Technology allows for the smart control of two air conditioners without any additional items.
•Remote mounting Mounts near your existing distribution panel for simple, low-cost installation.
Evolution™ Controls
•Auto/Manual/Off illuminated buttons Selects the operating mode and provides easy, at-a-glance status indication in any condition.
•  Sealed, raised buttons Smooth, weather-resistant user interface for programming and operations.
•Utility voltage sensing Constantly monitors utility voltage, setpoints 60% dropout, 80% pick-up, of standard voltage.
•Generator voltage sensing Constantly monitors generator voltage to ensure 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 Ensures 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 seven day exerciser Operates engine to prevent oil seal drying and damage between power outages by running the generator for 12 minutes every week.
•Smart battery charger Delivers charge to the battery only when needed at varying rates depending on outdoor air temperature.
•Main line circuit breaker Protects generator from overload.
•Electronic governor Maintains constant 60 Hz frequency.
Unit
•SAE weather protective enclosure Sound attenuated enclosure ensures quiet operation and protection against mother nature, withstanding winds up to 150 mph. 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.
Installation System
•1 ft (305 mm) flexible fuel line connector Easy installation.
•Composite mounting pad

 

14/17/20 kW                                                                                 
specifications

Generator

 

006240-0, 006241-0,

 

006242-0, 006243-0, 006248-0, 006249-0

 

006244-0, 006250-0

Model
006247-0, (14 kW) (17 kW) (20 kW)
Rated Maximum Continuous Power Capacity (LP) 14,000 Watts* 17,000 Watts* 20,000 Watts*
Rated Maximum Continuous Power Capacity (NG) 14,000 Watts* 16,000 Watts* 18,000 Watts*
Rated Voltage 240 240 240
Rated Maximum Continuous Load Current – 240 Volts (LP/NG) 58.3/58.3 70.8/66.6 83.3/75
Total Harmonic Distortion Less than 5% Less than 5% Less than 5%
Main Line Circuit Breaker 60 Amp 65 Amp 90 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 (not included)   Group 26R, 12 Volts and 525 CCA Minimum  
Unit Weight (lb/kg) 435/197.3 471/213.6 (Steel); 437/198.2 (Aluminum) 451/204.6
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** 66 66 66

Sound output in dB(A) at 23 ft (7 m) with generator in Quiet-Test™ low-speed

exercise mode**

 

N/A

 

60

 

60

       
Engine      
Type of Engine GENERAC OHVI V-TWIN GENERAC OHVI V-TWIN GENERAC OHVI V-TWIN
Number of Cylinders 2 2 2
Displacement 992 cc 992 cc 999 cc
Cylinder Block   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 177 (5.01) 193 (5.47) 205 (5.8)
Full Load 279 (7.9) 312 (8.83) 308 (8.72)
1/2 Load 67.2 (1.85) [6.99] 72.4 (1.99) [7.53] 75.6 (2.08) [7.87]
Full Load 111.6 (3.07) [11.61] 130 (3.57) [13.53] 140 (3.85) [14.57]

Note: Fuel pipe must be sized for full load. Required fuel pressure to generator fuel inlet at all load ranges – 3.5-7″ water column (7-13 mm mercury) for natural gas, 10-12″ water column (19-22 mm

mercury) for LP gas. For Btu content, multiply ft3/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)

 
Controls      
2-Line Plain Text Multilingual LCD Display   Simple user interface for ease of operation.  
Mode Buttons:            Auto   Automatic Start on Utility failure. 7 day 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   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 wattage 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 about 3.5 percent for each 1,000 feet (304.8 meters) above sea level; and also will decrease about 1 percent for each 6 °C (10 °F) above 16 °C (60 °F).

14/17/20 kW
available accessories

 

Model # Product Description

 

005819-0

 

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 product.

 

006212-0

 

Cold Weather Kit

If the temperature regularly falls below 32 °F (0 °C), install a cold weather kit to maintain optimal battery and oil temperatures. Kit consists of a battery warmer and oil filter heater with built-in thermostats.

 

005621-0

Auxiliary Transfer Switch Contact Kit The auxiliary transfer switch contact kit allows the transfer switch to lock out a single large electrical load you may not need. Not compatible with 50 amp pre-wired switches.

005839-0 – Bisque

005666-0 – Gray

Fascia Base Wrap Kit* (Standard on 20 kW) The fascia base wrap snaps together around the bottom of the new air cooled generators. This offers a sleek, contoured appearance as well as offering protection from rodents and insects by covering the lifting holes located in the base.

005703-0 – Bisque

005704-0 – Gray

 

Paint Kit*

If the generator enclosure is scratched or damaged, it is important to touch-up the paint to protect from future corrosion. The paint kit includes the necessary paint to properly maintain or touch-up a generator enclosure.

006484-0 – 14 & 17 kW

006485-0 – 20 kW

 

Scheduled Maintenance Kit

Generac’s scheduled maintenance kits provide all the hardware necessary to perform complete routine maintenance on a Generac automatic standby generator.

 

005928-0

 

Wireless Remote

Completely wireless and battery powered, Generac’s wireless remote monitor provides you with instant status information without ever leaving the house. Not compatible with CorePower or EcoGen systems.

 

006199-0

 

PMM Starter Kit

The PMM Starter Kit consists of a 24 VAC, field installed transformer that enables the use of the 24 VAC Power Management Modules (PMMs)and one PMM. The standard controller (without starter kit) can control two HVAC loads with no additional hardware. Not compatible with pre-wired switches.

 

006186-0

Power Management Module (50 Amps) Power Management Modules are used in conjunction with the Smart Switch to increase its power management capabilities. It gives the Smart Switch additional power management flexibility not found in any other transfer switch. Not compatible with pre-wired switches. Note: PMM Starter Kit required.

 

006463-1

 

Mobile Link™

Generac’s Mobile Link allows you to check the status of your generator from anywhere that you have access to an Internet connection from a PC or with any smart device. You will even be notified when a change in the generator’s status occurs via e-mail or text message.

 

 

* Note: Bisque kits are used in conjunction with steel enclosures. Gray kits are used in conjunction with aluminum enclosures.

 

 

Smart Switch Features

  • Includes Digital Power Management Technology standard (DPM).
  • Intelligently manages two air conditioner loads with no additional

hardware.

  • Up to four more large (120/240 VAC) loads can be managed when used in conjunction with Power Management Modules (PMM**).
  • 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
  • Service equipment rated, dual coil
  • Rated for both aluminum and copper
  • NEMA/UL 3R aluminum outdoor
  • Main contacts are silver plated or silver alloy to resist welding and

sticking.

**Note: PMM starter kit is required prior to using the modules.

 

200 Amps 120/240, 1ø

Open Transition Service Rated

Height Width Depth
  H1 H2 W1 W2
in 27.24 30.0 11.4 13.5 7.09
mm 692.0 762.4 289.0 343.0 180.0

 

Dimensions

 

 

 

200 Amps 120/240, 1ø

Open Transition Service Rated

Height

Width

Depth

 

H1

H2

W1

W2

in

27.24

30.0

11.4

13.5

7.09

mm

692.0

762.4

289.0

343.0

180.0

 

 

 

Model

 

006241-0 (14 kW)/006243-0 (17 kW)/006244-0 (20 kW)

No. of Poles 2
Current Rating (Amps) 200
Voltage Rating (VAC) 120/240, 1Ø

Utility Voltage Monitor (Fixed)*

-Pick-up

-Dropout

 

80%

60%

Return to Utility* approx. 13 sec.
Exercise weekly for 12 minutes* Standard
UL Listed Standard
Enclosure Type NEMA/UL 3R
Withstand Rating (Amps) 22,000
Lug Range 250 MCM – #6

 

*Function of Evolution Controller

This product is no longer available for purchase.

To see the product that replaced this model or one
similar in specifications click on the button below.