Monterey M3 - Chapter 10 VENTILATION SYSTEM; Engine Compartment Ventilation; VENTILATION SYSTEM 10.1 Engine Compartment Ventilation

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MONTEREY
BOATS
10.1 Engine Compartment Ventilation
All Monterey inboard boats are equipped with an
engine compartment ventilation system consist-
ing of intake ducts, exhaust ducts and an exhaust
blower. The ventilation system is designed to meet
or exceed the requirements of the United States
Coast Guard in effect at the time of manufacture
and remove fuel vapors and excess heat from the
engine room.
Free Air System
A ow of air into the engine compartment is pro-
vided by two vents located on either side of the
deck. Exhaust ventilation designed into the vents
provides a ow of air out of the engine compart-
ment. The exhaust area of the vents have ducts
that reach to the lower part of the engine com-
partment. This provides adequate air movement
while operating at or near cruise speeds.
The vents are designed with special bafes that
prevent seawater or spray from entering the
engine or storage compartments while providing
adequate air movement for the engine. The air
ow from the port vent ows from the deck vent,
through the port transom storage compartment
and then to the engine compartment through
vents in the side of the inside wall of the com-
partment. Therefore, it is important not to ll
Chapter 10:
Engine Compartment Vents
VENTILATION SYSTEM
Port Side Engine Compartment Vent
Starboard Engine Compartment Vent
this compartment with dunnage to the point the
stowed items severely restrict the air ow.
Forced Ventilation
An electric blower provides ventilation to the en-
gine compartment prior to start up of the engine
and while operating below cruise speed. The
blower is activated by a switch at the helm and
is located in the vent hose on the starboard side
of the engine compartment. When activated, the
blower will remove bilge fumes through the bilge
exhaust vents. Refer to the Electrical Systems
chapter for more information on blower opera-
tion.