Generac Power Systems 0661-5 - Manual (Page 20)

COMPARTMENT FLOOR CUTOUTS
You must provide openings in the generator compart­
ment for the following items (Figure 18):
• Engine exhaust and cooling air outlets
• Generator cooling air inlet
• Four holes for passage of generator mounting bolts. See
“Generator Restraint” on Page 16.
Line the compartment interior walls and floor, as well as
the underside of the floor, with 26-gauge galvanized steel.
Vapor seal all compartment seams and joints.
Over the galvanized steel lining, install a selected combi­
nation of acoustical materials as mentioned in “Sound
Insulating Materials.”
DANGER: Fuel lines and exhaust piping must not
penetrate into vehicle living area.
ACOUSTICS
If excessive noise levels should become a problem,
the installer may wish to consider the following:
• Using special sound insulating materials.
• Construction of a special noise abatement compartment.
IMPORTANT: ANY METHOD USED TO REDUCE
NOISE MUST NOT ADVERSELY AFFECT THE
FLOW OF COOLING AND VENTILATING AIR INTO
OR OUT OF THE COMPARTMENT.
In addition to the effective use of sound insulating
materials, construction of a special noise abatement
compartment might be considered to reduce noise
levels. Such a compartment might be constructed as
follows (Figure 19):
• Use 5/8-inch thick or 3/4-inch thick plywood in the com­
partment.
• Construct the compartment floor of a double thickness of
5/8-inch or 3/4-inch plywood.
DANGER: Do not install any insulation or other
absorbent materials on the interior or underside of
the compartment.
Seal all compartment door edges to prevent noise leak­
age around the door perimeter.
Line the compartment door interior (except for air open­
ings) with suitable, fire proof sound insulation (such as 1-
inch thick fiberglass with a 2-pound density).
Figure 19 — Typical Noise Abatement
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Figure 18 — Compartment Floor Cutout