Generac Power Systems 0661-5 - Manual (Page 24)

EXHAUST SYSTEM
The generator exhaust system must be safely and
properly installed. Only approved mufflers and other
exhaust system parts must be used. A properly
installed exhaust system must be vapor tight, quiet
and completely safe.
CAUTION: Never tee the generator engine exhaust
pipe into the vehicle engine exhaust piping. This
causes excessive back pressure on the generator
engine. Also, water from one engine can damage
the other engine.
DANGER: The generator engine gives off deadly
carbon monoxide gas through its exhaust system.
This dangerous gas, if breathed in sufficient con­
centrations, can cause unconsciousness or even
death. Symptoms of carbon monoxide poisoning
are (a) inability to think coherency, (b) vomiting, (c)
twitching muscles, (d) throbbing in temples, (e)
dizziness, (f) headache, (g) weakness and sleepi­
ness. If any of these symptoms are experienced,
move into fresh air immediately. If symptoms per­
sist, get medical attention. Do not operate the
generator until its exhaust system has been
inspected and repaired.
MUFFLERS AND SPARK ARRESTORS
Exhaust mufflers and spark arrestors that Generac
supplies meet code and standard requirements, and
are approved by the U.S. Forest Service. Use only
mufflers and parts approved by Generac. Any per-
son(s) installing an unapproved muffler, or an unap­
proved exhaust system part, or modifying an exhaust
system in any way that might cause a hazard, is liable
for any damage, injury or warranty expense that might
be caused by such unapproved installation or modifi­
cation.
Failure to provide and maintain a spark arrestor may
be in violation of the law. If this generator is used on
any forest covered, brush covered, or grass covered
unimproved land, you must provide a spark arrestor.
The vehicle owner or operator must maintain this
device in good condition. In the State of California,
the preceding is required by law (Section 4442 of the
California Public Resources Code). Other states may
have similar laws. Federal laws apply on federal
lands.
TYPE OF EXHAUST SYSTEM
The NP-30G generator has a configuration for a bot­
tom out exhaust system and is equipped with such an
exhaust muffler (Figure 26).
EXHAUST SYSTEM SAFETY
Maintain a clearance of at least 3 inches (76mm)
between exhaust system parts and any combustible
material (such as wood, felt, cotton, organic fibers or
other like material). If you cannot maintain the 3-inch
clearance, locate, insulate or shield the exhaust part(s)
so that the temperature of any combustible material is not
raised more than 117°F (65“C) above the ambient air
temperature.
Extend the exhaust system at least one inch (25mm) past
the outer edge of the vehicle. Do not terminate the
exhaust system under the vehicle.
Terminate the exhaust tailpipe such that exhaust gases
will not be drawn back into the generator compartment
and recirculated.
If there is any possibility of the tailpipe or muffler being
damaged, protect these damage prone areas by means
of a protective device (such as a “skid bar”).
Install the generator exhaust system according to safe
automotive practices.
Use enough exhaust system hangers to prevent any part
of the system from being dislocated.
Use exhaust system parts recommended by Generac.
Using unapproved exhaust mufflers and exhaust system
parts is the responsibility of the person(s) installing such
unauthorized parts.
Do not terminate the exhaust system under any opening,
window or vent which can be opened or is not perma­
nently sealed from the vehicle interior.
Exhaust piping must be large enough to prevent exces­
sive back pressure on the generator engine.
Never tee the generator engine exhaust pipe into the
vehicle engine exhaust piping. This causes excessive
back pressure on the generator engine. Also, wafer from
one engine can damage the other engine.
Plan exhaust system installation carefully. Comply with all
applicable codes, standards and regulations.
Figure 26 — Exhaust System
EXHAUST
MUFFLER
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