Generac Power Systems 25, 20, 30 owner manual ‹ Cold Weather KIT, ‹ Reconfiguring the Fuel System

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Standby Generator Sets

Specifications

Figure 6.1 — Interconnections

CONTROL PANEL

Utility In

Transfer Switch

NEUTRAL

GENERATOR CONNECTION BOX

 

TO

 

 

 

 

ALTERNATOR

 

 

 

N1

 

 

Gen

 

NEUTRAL

 

N1

 

N2

 

 

 

 

N2

 

23

 

 

23

Load

 

4- # 14 GA

186

194

 

 

194

 

 

 

 

 

183

CIRCUIT

WIRES TO

 

Out

BREAKER

178

178

 

GENERATOR

 

 

 

 

CONNECTION

 

 

Battery

 

BOX

 

 

Charger

 

 

 

Input

GROUND

 

 

TO GENERATOR

 

 

 

CONNECTION BOX

Neutral

 

 

 

120 Volt +

 

 

 

 

Grd

 

 

 

 

To Generator Control Panel

Ground Level Concrete Slab

STUB-UP AREA

See Install Dwg for

Dimensions

FRAME RAIL

 

CIRCUIT BREAKER SIZE

KW

VOLTS

/ AMPS

LUG SIZE

25

240 1 Ø

125

#4 to 1/0

25

208 3 Ø

100

#4 to 1/0

‹COLD WEATHER KIT

For cold climates, optional cold weather kit (part number 0F6148) is recommended. The kit includes:

Battery Warmer

4” Junction Box with hardware

6 qt. pack 5W-30 synthetic oil (engine)

‹RECONFIGURING THE FUEL SYSTEM

NOTE:

All models are configured to run on 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 of the demand regulator (see Figure 6.2).

3.Disconnect the power wires from the fuel sole- noid located on top of the regulator assembly.

4.Loosen the spring clamp on the small fuel enrich- ment line and remove the hose from the hose barb.

5.Remove the black pipe assembly from the outlet port of the demand regulator.

6.Remove the NG fuel jet (loosen counter clock- wise) from the outlet port.

7.Remove the LP fuel jet (loosen counter clockwise) from the jet keeper port on the side of the regula- tor housing. Install this jet into the outlet port in the regulator casting.

NOTE:

The jet sizes are stamped on the individual jets. The larger jet size is used for running on NG.

8.Install the previously removed NG jet into the jet keeper port on the side of the regulator housing.

9.Install the previously removed black pipe onto the outlet port of the demand regulator.

10.Reverse steps 1-4 in this procedure to reactivate the demand regulator.

Figure 6.2 — Reconfigure the Fuel System

DANGER

Serious injury or damage may occur if not con- figured properly. Please consult an Authorized Dealer with any questions.

04/07 A .Rev GenSpec037

6-2

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Contents 6L 20/25/30 kW Models Standby Generator Sets Table of Contents  Warning   Electrical Hazards  ‹ Read this Manual Thoroughly ‹ Operation and Maintenance‹ HOW to Obtain Service Introduction‹ Data Label Identification RecordCoolant Recommendations Equipment DescriptionEngine OIL Recommendations Engine Protective Devices ‹ LP Fuel System Fuel System‹ Fuel Requirements ‹ Natural GAS Fuel SystemSpecifications ‹ Cold Weather KIT ‹ Reconfiguring the Fuel SystemGenerator AC Lead Connections Alternator Power Winding Connections‹ FOUR-LEAD, SINGLE-PHASE Stator ‹ 3-PHASE AlternatorsInitial Inspection for Genset Startup InstallationPreparation Before START-UP ‹ Preparation for START-UP START-UP Checklist‹ Retransfer and Shutdown Operating Unit with Manual Transfer SwitchGenerator Control Operation ‹ Engine START-UP and TransferChecking Fluid Levels Maintenance Performed by Service FacilitiesCooling System ‹ Inspect Cooling System ‹ Battery Fluid‹ Check Battery ‹ Exercise System‹ Spark Plugs ‹ Changing the Engine AIR Cleaner ‹ Coolant Change‹ Changing Engine OIL Miscellaneous Maintenance Service Maintenance Interval Information Service ScheduleLevel Maintenance Level Problem Cause Correction Troubleshooting GuideStandby Generator Sets Standby Generator Sets Standby Generator Sets Standby Generator Sets Page Housing Blower LG Pilot Page Screw Phtt M4-0.7 X 12 ZYC Page Components Included in 0G4577E Page Radiator Support LH Side 1.6L Page Mounting Base 1.6L 2007 C1 Page Battery TRAY, C1 & C2 Page Engine Generac 1.6L NG Page ASM Motor Stepper Page Elbow 90D 3/4 NPT Page Rear Intake Wrap 1.6L C1 Page Muffler C1 Page Page Page Page Page Page Page Page Page Page Page Page Page Page 04/07 a .Rev BackPg001

25, 30, 20 specifications

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