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Power Systems, Inc. 29
2.5 EXHAUST SYSTEM
The generator exhaust system must be safely and
properly installed. Only approved exhaust system
parts must be used. A properly installed exhaust sys-
tem must be vapor-tight, quiet, and completely safe.
The generator engine gives off DEADLY carbon
monoxide gas through its exhaust system. This
dangerous gas, if breathed in sufficient concen-
trations, can cause unconsciousness or even
death. Never operate the generator set with
the vehicle inside any garage or other enclosed
area. DO NOT OPERATE THE GENERATOR IF THE
EXHAUST SYSTEM IS LEAKING OR HAS BEEN
DAMAGED. SYMPTOMS OF CARBON MONOX-
IDE POISONING ARE (a) inability to think coher-
ently, (b) vomiting, (c) twitching muscles, (d)
throbbing temples, (e) dizziness, (f) headaches,
(g) weakness, and (h) 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.
Never tee the generator engine exhaust pipe
into the vehicle engine exhaust piping. This
causes excessive back pressure on the genera-
tor engine. Also, water from one engine can
damage the other engine.
2.5.1 MUFFLER AND SPARK ARRESTOR
The exhaust muffler supplied with the QUIETPACT ™
65D is a spark arrestor type that meets code and
standard requirements of the U.S. Forest Service.
Any person(s) installing an unapproved 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 warranty expense
that might be caused by such unapproved installation
or modification.
The inside diameter of the muffler outlet tube is 33.5
mm/1.32 inches. Nominal pipe diameter of 1-5/16”
(1.31”) will fit snuggly inside and 1-3/8” muffler clamp
will hold in place.
2.5.2 EXHAUST SYSTEM SAFETY
• Maintain a clearance of at least 3 inches (76 mm)
between exhaust system parts and any com-
bustible material (such as, wood, felt, cotton,
organic fibers, or other like material). If you can-
not maintain the 3-inch (76 mm) clearance, locate,
insulate, or shield the exhaust part(s) so that the
temperature of any combustible material is not
raised to more than 117° F (65° C) above the
ambient air temperature.
• Terminate the exhaust tailpipe at least 3 feet (91
cm) from the vehicle’s fuel filler cap and at least
2 inches (51 mm) past the outer edge of the vehi-
cle. 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.
• Fuel and oil must NOT be able to drip onto any
exhaust system part.
Figure 2.13 – Typical Exhaust System
• 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 that 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.
MUFFLER PERMANENTLY
MOUNTED INSIDE
ENCLOSURE
TAILPIPE MUST EXTEND 2 INCHES
BEYOND THE COACH BODYWORK
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Section 2 – Installation
QUIETPACT™ 65D Recreational Vehicle Generator