Cessna 182 1973 - Cabin Heating, Ventilating and Defrosting System

erate
the
light,
turn
on
the
"NAV
LIGHT"
switch
and
adjust
map
light
in-
tensity
with the
rheostat
control
knob
on
the
back
of
the
control
wheel
pad
on
the
right
side.
A
dome
light
is
mounted
in
the
ceiling
of
the
rear
cabin
area
as
an
aid
to
loading
of
passengers
during night
operations.
A
slide
switch
ad-
jacent
to the
light
turns
the
light on
and
off.
CABIN
HEATING,
VENTILATING
AND
DEFROSTING SYSTEM.
The
temperature
and volume
of
airflow into
the
cabin
can
be
regulated
to
any
degree
desired
by
manipulation
of
the
push-pull
"CABIN
HEAT" and
"CABIN
AIR"
knobs.
Both
control knobs
are
the double-button
type
with
friction
locks
to
permit
intermediate
settings.
NOTE
For
improved
partial
heating
on
mild
days,
pull
out
the
"CABIN
AIR
knob
slightly
when
the
"CABIN
HEAT"
knob
is
out.
This
action
increases
the airflow
through
the
system,
increasing
efficiency,
and blends
cool
out-
side
air
with
the exhaust
manifold
heated
air,
thus
eliminating
the
possibility
of
overheating
the
system
ducting.
The
rotary
type
"DEFROST" knob
regulates
the
airflow
for
windshield
defrosting.
Front
cabin
heat and
ventilating
air
is
supplied
by
outlet holes
spaced
across
a
cabin manifold
just
forward
of
the
pilot's
and
copilot's
feet.
Rear
cabin heat
and
air
are
supplied
by
two
ducts
from
the
manifold,
one
extending
down
each side
of
the
cabin
to
an
outlet at the
front door
post
at
floor
level.
Windshield
defrost
air is also
supplied
by
a
duct
leading
from
the
cabin manifold.
Separate
adjustable
ventilators
supply
additional
air;
one
near
each
upper
corner
of
the
windshield
supplies
air
for
the
pilot
and
copilot,
and
two
optional
ventilators
in
the
rear
cabin
ceiling
supply
air
to the
rear
seat
passengers.
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