Chevrolet 1973 Monte Carlo Owner's Manual page 38

Temperature (Lower Lever)
The temperature lever allows a
selection of air temperature from
Cold at the far left to Hot at the far
right. When the temperature lever
is in the COLD position the system
will provide the coldest air possible.
When the temperature lever is
moved to the right (toward HOT) ,
the system will operate on outside
air.
Selector (Upper Lever)
This lever provides a selection of
systems available to handle various
heating and cooling requirements
throughout the year. The Selector
lever has four (4) major opera-
tional positions-"Off," "Air Condi-
tioning," "Vent" and "Heating."
The "Air Conditioning" and "Heat-
ing" groups have several positions
which improve the effectiveness of
the system for various demands.
OFF-The system operates on low
blower regardless of fan switch po-
sition with air discharged into ve-
hicle through heater outlet.
A/C-Air from the passenger com-
partment is recirculated through
the system with some outside air
and discharged from the upper out-
lets when the temperature lever is
in Full COLD or extreme left. If
the Temperature lever is moved
right to the first stop or further, the
system will automatically go on
outside air. The AIC position, with
Temp. lever in Full COLD, is used
when maximum cooling is required
under conditions of high tempera-
ture and humidity. High fan speed
is automatically attained in this
position.
36
A/C (with Temp lever right to first
stop) - Outside air is passed
through the system and discharged
through the upper outlets. This po-
sition is recommended for most air
conditioning situations because of
reduced blower noise and reduction
of cigarette smdke within the ve-
hicle. Fan speed may be varied as
required.
VENT - Outside air is passed
through the system and discharged
from the upper and lower outlets.
This position is provided for cool
to moderate weather when refrig-
eration is not required.
HEATER-Outside air is delivered
through the heater outlet and with
some air through the defroster out-
lets. Temperature may be adjusted
as required. This position is recom-