Section 6 – Installation
PRIMEPACT 66G and 66LP Recreational Vehicle Generators
behind the generator for cooling airflow (Figure 6.13 ). Recommended clearance behind the back of the generator is at least 1/2 inch (13 mm).
Figure 6.12 – Air Inlet Using Ductwork
Figure 6.13 – Air Inlet in Vehicle Skirt
VEHICLE FLOOR | VEHICLE |
| |
| SKIRT |
| AIR |
| INLET |
MINIMUM |
|
CLEARANCE |
|
|
◆6.3.4 TESTING THE INSTALLATION
Generac recommends testing the installation to be sure adequate cooling airflow is available to the unit before placing the unit into service. If the unit shows signs of overheating, you will need to enlarge the air openings. Never place a unit into service until absolutely certain that cooling and ventilation is adequate.
NOTE:
You must test the installation, especially if you bring in air from below the generator set.
6.4GASOLINE FUEL SYSTEM
The installation of a gasoline fuel system (Figure 6.14) for a recreational vehicle generator set must comply with applicable codes, standards and regulations. The entire fuel system must be completely free of leaks. There must be no possibility of gasoline vapors entering the vehicle interior.
Figure 6.14 – Generator Fuel System
Fuel Pump
Fuel Filter
◆6.3.3 COMPENSATING FOR RESTRICTIONS
Such materials as screening, louvers or expanded metal can restrict the free flow of air. Compensate for this restriction by making the actual air opening propor- tionately larger.
Some materials may offer only a 60 percent “free air inlet area.” Other more efficient materials may provide up to a 90 percent free air inlet area. The percentage of free air inlet opening is usually available from the mate- rial supplier or manufacturer.
To determine the actual air inlet opening size required, divide 100 square inches by the percent- age of free air inlet area for the material you will use.
For example: If you plan to use screening with an 80 percent free air inlet area, divide 100 by 0.8, which results in 125 square inches. Minimum actual size of air inlet opening in this case is 125 square inches.
Fuel Line
Gasoline is highly flammable, and its vapors are explosive. Comply with all codes, standards and regulations pertaining to gasoline fuel systems used in recreational vehicle generators. Properly install and maintain the fuel system and keep it entirely free of leaks. Gasoline vapors must not enter the vehicle interior.
Factory installed generator fuel system components include (a) fuel filter, (b)
Generac® Power Systems, Inc. 27
