Peterbilt 579 - Sleeper Heater - A;C Controls (Optional)

HEATING AND AIR CONDITIONING
Outside Air / Recirculation Air
Selecting air
recirculation mode
completely isolates the cab interior
from the outside air. This mode is
helpful in preventing dust, pollen,
and odors from entering the cab.
Additionally, recirculation mode can
reduce the amount of time needed
to cool down the vehicle while in
maximum cool down. Note that the
mode may increase fogging on the
windshield. A coarse air lter is
provided for recirculation air and is
located under the IP.
The outside
air mode provides for
100% outside air into the cab. This
mode is helpful with windshield
defogging. A pleated air lter located
under hood provides ltration for dust,
pollen, and debris. If equipped, your
vehicle may also provide for ember
ltration or ne particulate ltration.
Sleeper Heater - A/C
Controls (optional)
1. Fan Control Dial
2. Temperature
Control Dial
3. Air Conditioner
Button
Unlike the cabin air temperature
controls, the sleeper temperature
control will alter the air temperature
based on the knob setting. The
temperature control is not keyed
to specic temperatures. Turning
counterclockwise means cooler than
it is now. Clockwise means warmer
than it is now. Once the desired
temperature is reached, the system
will maintain it automatically.
A separate
switch on the dash HVAC
unit will send power to the “bunk” or
sleeper control unit The button on the
cab HVAC unit must be pressed and
in the on mode to use the sleeper
controls.
The sleeper
control unit has three
controls:
1. Air Speed
Control
2. Air Conditioner
Compressor
On/Off
3. Air Temperature
Control
3
(04/13) Y53-6047–2C 3-89