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TP-6335 9/048 Exhaust System
4.1 Planning
Carefully plan the generator exhaust systemto ensurea
safe, quiet installation. Verify that the installation
complies with all state and local requirements and
applicable articles of the codes listed at the beginning o f
this manual.
4.2 Clearance Requirements
Kohler Co. recommends a minimum clearance of
38 mm (1 1/2 in.) between the exhaust syst em parts
and the fuel system, the electrical system, and all
combustible components to protect the gener ator s et
components and to avoid igniting adjacent combustible
materials.
4.3 Exhaust Piping, If Used
Route the exhaust piping to maintain minimum
clearances and to minimize exhaust piping bends. Use
a tail pipe as short as p ossible with as few bends as
possible to reduce back pressure. Design the exhaust
piping to prevent excessive back pressure of the
unit-mounted muffler, if equipped. S ee Figure 4-1 for
the allowable exhaust back pressure. Do not apply
weight or pressure to the unit-mounted muffler,
otherwise premature exhaust-system damage will
occur. A dding exhaust-pipe extensions to the
unit-mounted muffler may cause excessive vibration
and noise transmitted to the vehicle.
For generator sets without a unit-mounted muffler,
install a muffler made of aluminized steel or other
corrosion-resistant material of welded or crimped
construction.
Model
Allowable Exhaust
Back Pressure
10/13/15ERG < 10.2 kPa (3.0 in. Hg)
Figure 4-1 Allowable Exhaust Back Pressure