Generac Power Systems owner manual Specifications, Fuel Consumption, Reconfiguring the Fuel System

Page 9

Section 1 — General Information

Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators

1.10 SPECIFICATIONS

‹1.10.1 GENERATOR SPECIFICATIONS

 

 

Single-Phase

 

 

Model

004725

 

004723

004721

 

 

 

004726

 

004724

004722

 

 

Rated Max. Cont.

25

 

20

15

 

 

AC Power Output (kW)

 

 

 

 

 

 

Rated voltage (volts)

 

120/240

 

 

 

No. of Rotor Poles

 

2

4

 

 

Driven Speed of Rotor

3600

 

3600

1800

 

 

Rotor Excitation System

Direct excited brush type

 

 

Type of Stator

 

 

4 Wire

 

 

 

Rotor/Stator Insulation

 

 

Class F

 

 

 

 

 

 

 

 

 

‹1.10.2 ENGINE SPECIFICATIONS

Make

Mitsubishi

Displacement

92 inches3 (1.5 liters)

Cylinder Arrangement

4, in-line

Valve Arrangement

Overhead Cam

Firing Order

1-3-4-2

Number of Main Bearings

5

Compression Ratio

9 to 1

No. of Teeth on Flywheel

104

Ignition Timing

 

at 1800 rpm

35 degrees BTDC

at 3600 rpm

43 degrees BTDC

Spark Plug Gap

0.020-0.025 inch

Recommended Spark Plugs

 

Champion

RN11YC4

Oil Pressure

30-50 psi

Crankcase Oil Capacity

3.0 U.S. quarts (2.8 liters)

Recommended Engine Oil

SAE 15W-40

Type of Cooling System

Pressurized, closed recovery

Cooling Fan

Pusher Type

Cooling System Capacity

2 U.S. gallons (7.6 liters)

Recommended Coolant

Use a 50-50 mixture of

 

ethylene glycol base.

1.11 FUEL CONSUMPTION

25 kW Models

Using Natural Gas

........................................441 cu. ft. per hour

Using LP Gas

175 cubic ft.(4.8 gal.) per hour

20 kW Models

 

Using Natural Gas

........................................359 cu. ft. per hour

Using LP Gas

143 cubic ft. (4.0 gal.) per hour

15 kW Models

 

Using Natural Gas

........................................277 cu. ft. per hour

Using LP Gas

110 cubic ft.(3.1 gal.) per hour

NOTE:

Fuel consumption is given at rated maximum con- tinuous power output when using natural gas rated at 1000 Btu per cubic foot and LP gas rated 2520 Btu per cubic foot. Actual fuel consumption obtained may vary depending on such variables as applied load, ambient temperature, engine condi- tions and other environmental factors.

Fuel pressure for a natural gas set up should be five inches to 14 inches of water column (0.18 to 0.5 psi) at all load ranges.

Fuel pressure for an LP vapor set up should be 11 inches to 14 inches of water column (0.4 to 0.5 psi) at all load ranges.

1.12RECONFIGURING THE FUEL SYSTEM

NOTE:

All models are configured for natural gas from the factory.

To reconfigure the fuel system from NG to LP, follow these steps:

1.Turn the main gas supply off.

2.Remove the carburetor fuel hose from the outlet port (Port 1) of the demand regulator (Figure 1.8).

3.Remove the brass hose fitting from the outlet port (Port 1) of the demand regulator.

4.Remove pipe plug from Port 2.

5.Install brass hose fitting into Port 2.

6.Install pipe plug into Port 1.

7.Connect carburetor gas hose to brass fitting.

8.Tighten all clamps and plugs.

9.Make sure fuel supply is of the proper pressure and type for configuration.

10.Reverse the procedure to convert back to natural gas.

Figure 1.8 — Reconfigure the Fuel System

 

Port 1

 

Port 2

 

FUEL HOSE

FUEL HOSE

 

PLUG

BRASS HOSE

BRASS HOSE

PLUG

FITTING

FITTING

 

 

 

OUT

OUT

 

 

PORT 1

PORT 2

 

 

HOUSING

HOUSING

 

 

PORTS

 

 

PORTS

 

NG FUEL SYSTEM

LP FUEL SYSTEM

Generac® Power Systems, Inc. 7

Page 8 Page 10
Image 9
Page 8 Page 10
Contents Liquid-cooled, Prepackaged Standby Generators ‹ Operation and Maintenance Authorized Service Dealer Location‹ HOW to Obtain Service IntroductionIntroduction IFC Safety Rules General Hazards Electrical Hazards Generator Transfer SwitchAutomatic System Operation Generator AC Connection Systems‹ 1.7.2 High Coolant Temperature Switch ‹ 1.7.1 LOW OIL Pressure Switch‹ 1.7.3 LOW Coolant Level Switch Engine Protective DevicesLifting the Generator UnpackingReconfiguring the Fuel System Specifications‹ 1.10.1 Generator Specifications ‹ 1.10.2 Engine SpecificationsTorque Specifications Engine OIL RecommendationsCoolant Recommendations Generator Mounting Support Generator LocationBasic Standby Electric System ‹ 2.1.1 Nfpa StandardsEmergency Circuit Isolation Method Transfer Switch Start Signal ConnectionsTotal Circuit Isolation Method Grounding the GeneratorPreparation Before START-UP Battery Installation‹ 2.10.1 Vented Batteries ‹ 2.11.1 Prior to Initial START-UPUsing a Standard GTS Transfer Switch Control Console Components Manual Transfer START-UP Automatic OperationWeekly Exercise Cycle Every Three Months Engine HeaterOnce Every SIX Months Once AnnuallyCooling System Checking Fluid LevelsOverload Protection for Engine DC Electrical System ‹ 4.5.1 Check Engine OIL Level ‹ 4.5.2 Check Battery‹ 4.5.3 Exercise System ‹ 4.5.4 Inspect Cooling System‹ 4.5.11 Changing the Engine AIR Cleaner Miscellaneous Maintenance‹ 4.6.1 Cleaning the Generator ‹ 4.5.13 Coolant Change‹ 4.6.4 Battery Replacement ‹ 4.6.3 Battery MaintenanceService Maintenance Interval Information Scheduled MaintenanceLevel Maintenance Level Problem Cause Correction Troubleshooting PointsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators Installation Diagram Section Electrical Data Customer Connection 120/240V 1-PHASE Electrical Data Connector Interface Assembly Housing Governor ConnectorCover Connector Housing ASM Motor StepperWasher Shakeproof EXT 5/16 STL Base Mounting 1.5L Stnrd & AcstcDampener Vibration Washer Flat 5/16 ZincWeld Stud Under Roof Panel for Access Cover Cable GRD Wire Assy 99HSB Assembly BASE-DOOR Ground WireAssembly Cover Access Cover Access GENWeld Stud Under Roof For Access Cover Cable Door Weldment 1.5 EPS Roof Acstc & Stnd Cmprtmnt 1.5LWasher Self Locking Dome Baffle Cntrl PNL 1.5L AcousticTo a Silksc Wire AssemblyHourmeter Holder FuseWaterpump Hardware ARM Adjust Alternator Switch OIL PressureGround Wire Starter Clamp for Wiring Harness not Shown16 7 Radiator 1.5L Tank Coolant RecoveryVenturi 1.5L Modine Guard FAN 1.5L ModineVapor Gasket AIR Cleaner Adapter Cover AIR CleanerWeldment Mounting Base Flange Fuel Inlet16 30 21 Assy Rotor 10KW Housing BlowerAssy Rotor 15KW Assy Rotor 20KWBOOT, Battery Cable ASSY,WIRE#16 REDBRACKET, Battery Hold Down Battery Post Cover RED+Nipple TOE 1.5NPTX5.5 BLK Iron Manifold Exhaust 1.5LSaddle 2 Inch PIPE,EXHAUST 1.5L STNDRD&ACSTCYour Warranty Rights and Obligations MANUFACTURER’S Emission Control System Warranty CoveragePURCHASER’S/OWNER’S Warranty Responsibilities Emission Related Parts Include the Following Emission Control System WarrantyWarranty Schedule

004721-0, 004722-0, 004723-0, 004724-0, 004725-0, 004725-1, 004725-2, 004725-3, 004726-0 specifications

Generac Power Systems is a leader in energy solutions, committed to providing reliable power products for homes, businesses, and industrial applications. Among their extensive range of products, the Generac Power Systems models 004721-0, 004722-0, 004723-0, 004724-0, 004725-0, 004725-1, 004725-2, 004725-3, and 004726-0 stand out due to their advanced features and innovative technologies.

One of the key features of these models is the robust engine performance. They are designed with Generac's signature engines, which ensure optimal power output and durability. This leads to better energy efficiency while maintaining a low operating cost. The models are engineered for seamless operation under various load conditions, ensuring that you stay powered in any situation.

These Generac models also incorporate state-of-the-art transfer switch technology, which enhances their reliability. The transfer switches ensure that power is instantly transferred from the grid to the generator during an outage, allowing for uninterrupted service. This is especially critical for homes and businesses where power reliability is essential.

Combining convenience with efficiency, the models feature user-friendly interfaces that simplify operation. With available mobile monitoring options, users can keep track of their power status and diagnostics remotely. This is a game changer for individuals who want to maintain oversight of their energy solutions without being physically present.

Safety is another critical aspect integrated into the Generac Power Systems. The models are equipped with advanced safety features such as overload protection, low oil shutdown, and high-temperature shutdown, ensuring an added layer of security for users.

Moreover, these models are built with rugged construction materials making them suitable for all environmental conditions. Whether it’s extreme cold or heat, they are crafted to withstand the elements while performing at peak efficiency.

Generac Power Systems emphasizes sustainability as well, with models designed for lower emissions and quieter operation. This is ideal for homeowners and businesses conscious of their environmental impact and seeking to reduce noise pollution.

Overall, the Generac Power Systems models 004721-0, 004722-0, 004723-0, 004724-0, 004725-0, 004725-1, 004725-2, 004725-3, and 004726-0 represent the evolution of power generation technology. With their robust features, efficient operation, and commitment to safety, these generators are an excellent investment for anyone seeking reliable power solutions.
Top Page Image Contents