TP-5977 7/98 Installation 29
6.4 Exhaust System
Carbon monoxide.
Can cause severenausea,fainting,
or death.
The exhaust system must be
leakproof and routinely inspected.
WARNING
Generator set operation. Carbon monoxide can cause
severe nausea, fainting, or death. Never operate the
generatorsetinside a building unlessthe exhaustgasispiped
safely outside. Never operate in any area where exhaust gas
couldaccumulateandseep back insidea potentiallyoccupied
building or vehicle. Be careful when parking your vehicle to
avoidobstructing the exhaustoutlet. Theexhaustgasesmust
discharge freely to prevent carbon monoxide from deflecting
intothe vehicle. Avoidbreathingexhaustfumes whenworking
on or near the generator set. Carbon monoxide isparticularly
dangerous because it is an odorless, colorless, tasteless,
nonirritating gas that can cause death if inhaled for even a
short time.
Carbon monoxide symptoms. Carbon monoxide can
cause severenausea,fainting, or death. Carbon monoxide
isa poisonousgaswhich is presentinexhaustgases. Carbon
monoxide poisoning symptoms include but are not limited to
the following:
D Light-headedness, dizziness
D Physical fatigue, weakness in
joints and muscles
D Sleepiness, mental fatigue,
inability to concentrate
or speak clearly, blurred vision
D Stomachache, vomiting, nausea
If experiencing any of these symptoms and carbon monoxide
poisoning is possible, affected persons should seek fresh air
immediately. They should remain active. They should notsit,
lie down, orfallasleep. Alert othersto thepossibility ofcarbon
monoxide poisoning. Ifthecondition ofaffected persons does
not improve within minutes of breathing fresh air, they should
seek medical attention.
Installing exhaust tail pipe. Carbon monoxide can cause
severenausea,fainting,ordeath. Installexhaustsystemtail
pipe so discharged exhaust gases will not be drawn into
vehicle interior through windows, doors, air conditioners, etc.
Do notuse flexible tail piping because it could crack andallow
lethal exhaust fumes to enter the vehicle.
Inspecting exhaust system. Carbon monoxide can cause
severe nausea, fainting, or death. In addition to routine
exhaust system inspection, install a carbon monoxide
detector. Consult your coach builder or dealer for approved
detector installation. Test the carbon monoxide detector
function per the manufacturer’s instructions and keep it
operational at all times.
Planning. Carefully plan the generator set exhaust
systemtoensureasafe,quietinstallation. Makecertain
that the exhaust system and installation complies with
allstate andlocalrequirements andapplicablearticleof
the codes listed at the beginning of this section.
Clearance requirements. Because of the different
location of mufflers and piping to the muffler, follow
clearance requirements to protect generator set
components and to avoidignitingadjacent combustible
materials. Kohler Co. recommends a clearance of
1.5 in. (38 mm) between exhaust system components
and fuel system, electrical system, and all combustible
components.
Routing. Route the exhaust piping through the
compartment floor or walls maintaining minimum
clearances and minimizing exhaust pipe bends.
Exhaust sleeve. Use an exhaust sleeve or thimble
whenroutingexhaustpipingthroughacombustiblewall.
Muffler clamps. Use automotive-type, U-bolt muffler
clamps in exhaust system installation.
Muffler. Install a muffler made of aluminized steel or
other corrosion-resistant material of welded or crimped
construction. The muffler must meet USDA-Forest
Service approval and have a USDA-Forest Service
approved spark arrestor.
Hangers. Suspend exhaust system components
beneaththeundercarriagewithautomotive-typetailpipe
hangers (shock mounted) only. Position hangers
vertically directly above exhaust pipe to reduce
vibration. Excessive vibration caused by angular
hanger mounting could cause exhaust pipedamage. If
the tailpipe extends more than 18 in. (457 mm) beyond
the muffler, attach an additional hanger for support.
Tail pipe. Use a tail pipe as short as possible with as
fewgradualbendsaspossibletoreducebackpressure.
Extendtailpipehorizontallya minimumof 1 in.(25 mm)
past the perimeter of the vehicle. If the tail pipe is
locatedonthesamesideasthecompartmentairintake,
position tail pipe as not to recirculate exhaust gases.
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