Generac Power Systems 0940-1 - Manual (Page 29)

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.
A
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 deadiy
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) inabiiity to think coherently, (b) vomiting, (c)
twitching muscles, (d) throbbing in tempies, (e)
dizziness, (f) headache, (g) weakness and sieepi-
ness. if any of these symptoms ar experienced,
move into fresh air immediately. If symptoms per­
sist, get medical attention. Do not operate the gen­
erator untii 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
person(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 Impact-36 plus and Impact-34 plus generators have
a configuration for a bottom out exhaust system and is
equipped with such an exhaust muffler (Figure 30).
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, insu­
late 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 ujge 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 permanently
sealed from the vehicle interior.
Exhaust piping must be large enough to prevent excessive
back pressure on the generator engine.
Never tee the generator engine exhaust pipe into the vehi­
cle engine exhaust piping. This causes excessive back
pressure on the generator engine. Also, water from one
engine can damage the other engine.
Plan exhaust system installation carefully. Comply with all
applicable codes, standards and regulations.
Figure 30 — Exhaust System
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