Ventilation And Drainage Systems; Engine Compartment Ventilation - Four winns V458 Owner's Manual

K - 1 ENGINE COMPARTMENT
VENTILATION
All Four Winns V Series models are equipped
with engine compartment ventilation. This system is
designed to meet or exceed the requirements (in
effect at the time of manufacture) of the US Coast
Guard, the National Marine Manufacturers Associa-
tion, and the Ameri can Boat and Yacht Coun cil.
A. Natural Ventilation System
This system includes air intake and exhaust com-
ponents. The exhaust ducting reaches to the lower
bilge area. This provides adequate air movement
while underway and during bilge blower operation.
B. Forced Air Ventilation
All Four Winns V Series models are equipped with
an electric bilge blower. The bilge blower provides the
venti lation required prior to starting the en gines and
while at idle. See Section H - Electrical Systems for
blower operation instructions.
Before starting the engine(s) or gener ator,
operate the engine compart ment bilge blower
for four (4) minutes. Then check the engine
com part ment for fuel vapors. AL WAYS oper ate
the bilge blow er while the engines are at idle or
the genera tor is in use. Failure to comply could
cause explosion and there by inflict serious
injury or death.
Fumes can come from batteries while
charging. A concentration of hydrogen fumes
can be explo sive under the right conditions.
Ensure to follow the above warning.
C. Engine Ventilation System Mainte nance
Periodic inspection and cleaning of the ventilation
ducts is necessary to ensure adequate air circula tion.
A buildup of leaves, twigs, or other debris can severe-
ly reduce ventilation. Be sure bilge water does
not accumulate to a level that would obstruct the
ventilation ducts.
Ventilation and Drainage Systems - Section K

Ventilation and Drainage Systems

Blower operation can be tested by placing a hand
over the vents. DO NOT rely on the sound of the
blower. Be sure a substantial amount of air is being
exhausted by the bilge blower. Check the bilge blower
system often, preferably before each cruise.
K - 2 CABIN & COCKPIT VENTILATION
The V458 forward stateroom is equipped with a deck
hatch for ventilation. See Figure K1.
Figure K1: Deck Hatch
A screen and blind for the forward deck hatch is also
standard. This "layered" deck hatch system allows the
screen and blind to be slid to the desired position with
ease. Also, storage for the screens and blinds are built
into the screen/shade system. See Figure K2.
Figure K2: Screen/Shade System
Be sure deck hatch is secured while under way.
Damage to the hatch may result.
NOTICE
Owner's Manual Page 105