HEATING AND AIR CONDITIONING
3
NOTE
If you are required to idle your vehi-
cle for long periods of time, install an
auxiliary heater or automatic idle con
-
trol. These auxiliary devices can re-
duce fuel consumption and save you
money.
NOTE
If you are parked next to idling vehi-
cles, move your vehicle or do not stay
in your vehicle for prolonged periods of
time.
Manual Control Mode
The manual mode is the default mode
when the heating and air conditioning
system is turned on. The fan speed,
air temperature, and air outlets
are selected using the dials on the
controller.
Adjusting the
settings:
Step 1:
To adjust the fan speed,
turn the fan control dial clockwise to
increase speed or counterclockwise
to decrease speed. Setting the fan
dial to “O” turns the HVAC system off.
Step 2: To adjust the temperature
setting, turn the temperature control
dial to the desired temperature. The
system automatically adjusts the
outlet air temperature to achieve
the desired cab temperature.
Step 3: To adjust the air distribution,
turn the air distribution dial to the
desired position as indicated by the
graphics.
For vehicles
with a sleeper, the
cab control can be used to
activate/deactivate the sleeper
HVAC using the button inside the
mode dial.
The temperature
of the air from the
vents will uctuate as the vehicle
works to achieve the chosen cab
temperature. Note that in manual
mode the system does not engage
the A/C compressor automatically. To
engage the air conditioning, press the
button inside the temperature dial. To
engage recirculation of cab air, press
the button inside the fan speed dial.
3-82
Y53-6047–2C (04/13)
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