Generac Power Systems 04389-3, 04456-3, 04390-3 Specifications, ‹ 1.5.1 Generator, ‹ 1.5.2 Engine

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Section 1 — General Information

Air-cooled 7 kW, 12 kW and 15 kW Generators

1.5SPECIFICATIONS

‹ 1.5.1 GENERATOR

 

 

Model 04389

 

Model 04456

 

 

Model 04390

Rated Max. Continuous Power

6,000 NG/7,000 LP

 

12,000 NG/12,000 LP

13,000 NG/15,000 LP

 

Capacity (Watts*)

 

 

 

 

 

 

 

 

 

Rated Voltage

120/240

 

120/240

120/240

Rated Max. Continuous Load

 

 

 

 

 

 

 

 

 

 

Current (Amps)

 

 

 

 

 

 

 

 

 

 

120 Volts**

50.0 NG/58.3 LP

 

100.0 NG/100.0 LP

108.3 NG/125.0 LP

 

240 Volts

25.0 NG/29.2 LP

 

50.0 NG/50.0 LP

 

 

54.2 NG/62.5 LP

Main Line Circuit Breaker

30 Amp

 

50 Amp

 

 

65 Amp

Phase

1

 

 

 

1

1

Number of Rotor Poles

2

 

 

 

2

2

Rated AC Frequency

60 Hz

 

 

60 Hz

 

 

60 Hz

Power Factor

1

 

 

 

1

1

Recommended Air Filter

Part # 0C8127

 

Part # 0C8127

 

 

Part # 0C8127

Battery Requirement

Group 26/26R

 

Group 26/26R

 

 

Group 26/26R

 

 

12 Volts and

 

12 Volts and

 

 

12 Volts and

 

 

350 Cold-

 

cranking

 

525

Cold-cranking

 

 

525 Cold-cranking

 

 

 

 

 

 

 

Amperes

 

Minimum

 

Amperes Minimum

 

 

Amperes Minimum

 

 

 

 

 

Weight

375 Pounds

 

470 Pounds

 

 

487 Pounds

Output Sound Level @

68 db (A)

 

70.5 db (A)

 

 

71.5 db (A)

 

23 ft (7m) at full load

 

 

 

 

 

 

 

 

 

Normal Operating Range

 

 

 

-20°F (-28.8°C) to 104°F (40°C)

 

 

 

*Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power and condition, etc. Maximum power decreases about 3.5 percent for each 1,000 feet above sea level; and also will decrease about 1 percent for each 6° C (10° F) above 16° C (60° F) ambient temperature.

**Load current values shown for 120 volts are maximum TOTAL values for two separate circuits. The maximum current in each circuit must not exceed the value stated for 240 volts.

‹ 1.5.2 ENGINE

 

Model 04389

Model 04456

Model 04390

Type of Engine

GH-410

GT-760

GT-990

Number of Cylinders

1

2

2

Rated Horsepower

14.5 @ 3,600 rpm

26 @ 3,600 rpm

30 @ 3,600 rpm

Displacement

410cc

763cc

992cc

Cylinder Block

Aluminum w/Cast

Aluminum w/Cast

Aluminum w/Cast

 

Iron Sleeve

Iron Sleeve

Iron Sleeve

Valve Arrangement

Overhead Valves

Overhead Valves

Overhead Valves

Ignition System

Solid-state w/Magneto

Solid-state w/Magneto

Solid-state w/Magneto

Recommended Spark Plug

RC14YC

RC12YC

RC12YC

Spark Plug Gap

0.76 mm (0.030 inch)

0.508 mm (0.020 inch)

0.508 mm (0.020 inch)

Compression Ratio

8.6:1

9.5:1

9.5:1

Starter

12 Vdc

12 Vdc

12Vdc

Oil Capacity Including Filter

Approx. 1.5 Qts

Approx. 1.7 Qts

Approx. 1.7 Qts

Recommended Oil Filter

Part # 070185B

Part # 070185B

Part # 070185B

Recommended Air Filter

Part # 0C8127

Part # 0C8127

Part # 0C8127

Operating RPM

3,600

3,600

3,600

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Contents US Listed Introduction Authorized Dealer LocationPost Installation Start-up Adjustments MaintenanceTroubleshooting Introduction Inside Front Cover Warning   Electrical Hazards  ‹ Standards IndexBreaker for Bedrooms UNPACKING/INSPECTIONProtection Systems Generator Gfci‹ 1.5.2 Engine Specifications‹ 1.5.1 Generator Reconfiguring the Fuel System System SET LEDFuel Requirements Recommendations Fuel Consumption‹ 1.10.1 Generator Location‹ 1.9.2 12KW and 15KW, V-TWIN Engines Battery Installation Battery‹ 1.10.2 Transfer Switch 10.2.1 7 kW, 12 kW and 15 kW UnitsElectrical Checks Check Transfer Switch OperationBefore Initial START-UP Generator Tests Under Load Checking Automatic OperationAdjusting the Regulator Natural GAS only Adjustment Screw‹ 2.7.1 7 KW Units Engine Governor Adjustment‹ 2.7.2 12 KW and 15 KW Units ‹ 3.2.1 Auto Position Voltage Regulator AdjustmentBREAK-IN Procedure ‹ 3.3.1 12 VDC Accessory Outlet Automatic Transfer OperationSequence of Automatic Operation ‹ 3.2.2 OFF Position‹ 3.5.2 Transfer Back to Utility Power Source Manual Transfer OperationSetting the Exercise Timer ‹ 3.7.2 High Temperature Switch‹ 3.7.1 LOW OIL Pressure Switch ‹ 3.7.3 Overcrank‹ 3.7.4 Overspeed FusesChecking the Engine OIL Level ‹ 4.3.2 OIL Change Procedure Changing the Engine OILChanging the OIL Filter ‹ 4.3.1 Engine OIL RecommendationsBattery Maintenance Spark PlugsValve Clearance Cooling SystemOUT of Service Procedure ‹ 4.12.1 Removal from Service‹ 4.12.2 Return to Service Corrosion ProtectionService Schedule Be performed by the nearest Authorized DealerTroubleshooting Guide Problem Cause CorrectionAir-cooled 7 kW, 12 kW and 15 kW Generators Air-cooled 7 kW, 12 kW and 15 kW Generators Air-cooled 7 kW, 12 kW and 15 kW Generators Electrical Data Customer Connection Battery 1VA Engine Wiring Control Panel BOX Electronic Voltage Regulator Utility Electrical Data Electrical Data Electrical Data Electrical Data ATS N1A N2A Exploded Views and Parts Lists Part NO. QTY. Description Exploded Views and Parts Lists Part NO. QTY Description Exploded Views and Parts Lists QTY Description Exploded Views and Parts Lists COVER, 12 Circuit GTS Load Center 1310 Sleeve 124 125 139 136 135 123 120 137 143 133 134 132 KNOB, AIR Cleaner Exploded Views and Parts Lists QTY 32 31 Stator 12KW Exploded Views and Parts Lists PIN, Piston D20 Exploded Views and Parts Lists SCREW, Taptite M6-1.0X8 Yellow Chrome 7KW Mounting Dimensions PURCHASER’S/OWNER’S Warranty Responsibilities Your Warranty Rights and ObligationsMANUFACTURER’S Emission Control System Warranty Coverage Emission Control System Warranty Emission Related Parts Include the FollowingWarranty Schedule

04389-3, 04456-3, 04390-3 specifications

Generac Power Systems has established itself as a leading name in power generation equipment, and models 04389-3, 04456-3, and 04390-3 exemplify the company’s commitment to reliability and technology. These models are particularly popular among homeowners and businesses that need dependable backup power solutions.

The Generac 04389-3 is a 22 kW standby generator designed to provide seamless power during outages. It boasts a powerful 999cc engine that can handle heavy loads, making it suitable for larger homes or commercial settings. The generator features Generac’s patented True Power Technology, which ensures clean and stable power delivery, making it safe for sensitive electronics. It also comes equipped with an innovative shutdown system that prevents damage during low oil conditions and features a five-year limited warranty for added peace of mind.

Similarly, the 04456-3 model also serves as a robust standby generator, offering 24 kW of power output. This model highlights an advanced alternator that provides a reliable source of energy for running essential appliances like refrigerators, air conditioners, and heating systems. The 04456-3 includes an automatic exercise mode, allowing it to run tests periodically to ensure it’s always ready to operate when needed. Additionally, it utilizes a user-friendly digital controller that simplifies monitoring and operational management.

The Generac 04390-3 model offers a slightly lower output at 20 kW but retains high efficiency and reliability. Like its counterparts, it features an innovative design that operates quietly while delivering consistent power. This model is particularly aimed at residential users who require dependable backup solutions without the noise commonly associated with generators. It incorporates Generac’s Smart Management modules, enabling users to manage power loads effectively and avoid overloading the system.

All three models benefit from Generac’s Mobile Link technology, which enables remote monitoring via mobile devices. This feature allows users to check the status of their generators, including maintenance alerts and operational history, providing a convenient way to manage energy needs. In summary, Generac models 04389-3, 04456-3, and 04390-3 offer cutting-edge features, dependable technology, and robust capabilities, making them an ideal choice for anyone seeking reliable backup power solutions.