Westerbeke 7.6 KW BTD 60Hz Operator's Manual page 20

Exhaust System
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WARNING
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Carbon monoxide gas is deadly! Carbon monoxide is a dangerous gas that can cause
unconsciousness and is potentially lethal. Some of the symptoms or signs of carbon
monoxide inhalation or poisoning are listed below.
• Dizziness • Vomiting
• Intense Headache
• Muscular Twitching
• Weakness and Sleepiness • Throbbing in Temples
The generator must have its own separate exhaust installed so that the entry of raw water into the engine's
exhaust manifold and cylinders is prevented while the engine is not running, or while the vessel is under
sailor power in which case the vessel may experience heeling, backing down from following seas, or any
other condition. Special attention must be taken to make certain the exhaust system is secure, tight and
free of leaks.
The raw water supply through-hull sea cock fittings must be of the flush-hull type. High-speed scoop
types or weedless scoop types must not be used, as they tend to encourage siphoning.
When a water lift type exhaust system is used, the
exhaust muflIer should be mounted as close to the
engine as practical. The exhaust discharge should
always drop downward into the exhaust muflIer.
Loops in the exhaust hose between the water-injected
exhaust elbow and the water lift muflIer should be
avoided, as these will trap and hold water.
For installations where the exhaust manifoldlwater-
injected exhaust elbow is within 8 inches or below
the vessel's water line, provisions must be made to
install a siphon-break or a vent in the raw water
supply hose to the water-injected exhaust elbow.
This stops the flow of raw water that runs through
the raw water cooling system from filling the
exhaust and engine cylinders when the engine is shut
down. This raw water supply hose must be looped
above the water line and the siphon-break or vent
must always be above the water line during all angles
of vessel operation to prevent siphoning. The vent,
when used, must have its vent hose or tube routed so
it can remain above the water line and empty of
water when the engine is shut down. This allows air
to enter through this vent to prevent siphoning.
WESTERBEKE GENERATORS
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