Generac Power Systems 00862-1 - Manual (Page 25)

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 of deadly
carbon monoxide gas through its exhaust system.
This dangerous gas, if breathed in sufficient con­
centrations, can cause unconsciousness or even
death. Do NOT operate the generator if its exhaust
system is leaking or has been damaged.
Symptoms of carbon monoxide poisoning are (A)
inability to think coherently, (B) vomiting, (C)
twitching muscles, (D) throbbing temples, (E) dizzi­
ness, (F) headache, (G) weakness and sleepiness.
If you feel any of these symptoms, move into fresh
air immediately. If symptoms persist, get medical
help. Do not operate the generator until its exhaust
system has been inspected and properly repaired.
MUFFLERS AND SPARK ARRESTORS
This muffler meets code and standard requirements of
the U.S. Forest Service. Use only mufflers and parts
approved by Generac. Any person(s) installing an unap­
proved muffler, or an unapproved exhaust system part,
or modifying an exhaust system in any way that might
cause a hazard, is liable for any damage, injury or war­
ranty expense that might be caused by such unap­
proved installation or modification.
Failure to maintain a spark arrestor may be in violation
of the law. The vehicle owner or operator must main­
tain 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 QP55 generator has a configuration for a side out
exhaust system and is equipped with such an exhaust
muffler (Figure 28).
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, water from
one engine can damage the other engine.
Plan exhaust system installation carefully. Comply with all
applicable codes, standards and regulations.
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