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Generac Power Systems 00784-2, 09290-4 Owners And Installation Manual: Gasoline Fuel System

Air-cooled recreational vehicle generators.
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Figure 2.12 – Air Inlet Using Ductwork
Figure 2.13 – Air Inlet in Vehicle Skirt
VEHICLE FLOOR
MINIMUM
CLEARANCE
1-1/2"
N
2.3.3 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 pro-
portionately larger.
Some materials may offer only a 60 percent "free air
inlet area." Other more efficient materials may pro-
vide up to a 90 percent free air inlet area. The per-
centage of free air inlet opening is usually available
from the material supplier or manufacturer.
To determine the actual air inlet opening size
required, divide 100 square inches by the per-
centage 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.
PRIMEPACT 50 and 70 (50Hz) Recreational Vehicle Generators
VEHICLE
SKIRT
AIR
INLET
Section 2 – Installation
N
2.3.4 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 ade-
quate.
You must test the installation, especially if you
bring in air from below the generator set.
2.4

GASOLINE FUEL SYSTEM

The installation of a gasoline fuel system (Figure
2.14) for a recreational vehicle generator set must
comply with applicable codes, standards and regula-
tions. The entire fuel system must be completely free
of leaks. There must be no possibility of gasoline
vapors entering the vehicle interior.
Figure 2.14 – Generator Fuel System
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) 12-volt DC electric pump, (c)
engine carburetor, and (d) interconnecting lines and
fittings. Connect a fuel supply line to the fuel filter
inlet. Use a flexible length of approved fuel hose
between the fuel filter inlet connection and rigid fuel
lines.
Generac
NOTE:
Fuel Filter
Fuel Line
®
Power Systems, Inc. 27
Fuel
Pump

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