24 Generac
®
Power Systems, Inc.
Section 2 – Installation
IMPACT-36 plus II Recreational Vehicle Generator
2.2.3 SOUND INSULATING MATERIALS
Once installers have determined that compartments
are properly constructed and metal lined, they can
add acoustical material. This may include additional
sealant or insulating material, to reflect noise away
from the vehicle interior.
Sound insulating materials should be of a non-flam-
mable type. One excellent insulating material is a 1
inch thick fiberglass having a 2-pound density. When
fiberglass is used, its coated side should face toward
the compartment interior.
Using a combination of sound insulating materials
can often reduce noise more effectively than a single
material. For example, a sheet of lead or visco-elastic
material, along with a layer of other acoustical mate-
rial, is more effective than when a single material is
used.
2.2.4 COMPARTMENT FLOOR CUTOUTS
You must provide openings in the generator compart-
ment for the following items (Figure 2.7):
• Engine exhaust and cooling air outlets
• Generator cooling air inlet
• Four holes for passage of generator mounting
bolts. See “Generator Restraint” on Page 19.
Fuel lines and exhaust piping must not pene-
trate into vehicle living area.
◆◆
Figure 2.7 – Compartment Floor Cutout
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