Generac Power Systems 00862-2 - Manual (Page 29)

Section 2
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Installation
INSTALLATION
Series QP55-G Recreational Vehicle Generator
Figure 2. 12
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Air Inlet Using Ductwork
ANTI-SPLASH
Figure 2.13 - Air Inlet in Vehicle Skirt
♦ 2.5.3 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
proportionately 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.
♦ 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 adequate.
NOTE:
You must test the installation, especially if you
bring in air from below the generator set.
2.4 GASOLINE FUEL SYSTEH
The installation of a gasoline fuel system (Figure
2.14) for a recreational vehicle generator set must
comply with applicable codes, standards and regu­
lations. The entire fuel system must be completely
free of leaks. There must be no possibility of gaso­
line vapors entering the vehicle interior.
Figure 2.14
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Generator Fuel System
DANGER
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* Power Systems, Inc. 27