freightliner S2 Operator's Manual page 51

Heater, Ventilating, and Air Conditioner (HVAC)
Climate Control Panel
The climate control panel controls the HVAC for the
driver. The climate control panel without air condition-
ing is shown in Fig. 7.1. The climate control panel
with air conditioning is shown in
Standard controls consist of an eight-speed fan
switch, an air selection switch, and a temperature
control switch. See Fig.
conditioning, the panel also contains a telltale light
emitting diode (LED) and an air recirculation button.
NOTE: The vehicle may be equipped with a We-
basto heating system. The Webasto heating
system warms the engine prior to starting the
vehicle, and also assists in generating additional
heat for the passengers during operation. For
operating instructions see the Webasto Opera-
tor's Manual.
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06/17/2003
1. Fan Switch
Fan Switch
The fan switch controls the fan speed and forces
fresh or recirculated air through the air outlets. The
fan switch has eight fan speeds and an off position.
To increase airflow, turn the fan switch clockwise to a
higher number. To decrease the airflow, turn the
switch counterclockwise to a lower number.
Air Selection Switch
The air selection switch allows the driver to control
the flow of air through the face outlets, the floor out-
7.1
Fig. 7.2.
7.1. On vehicles with air
1
2
3
4
2. Air Selection Switch
Fig. 7.1, Climate Control Panel Without Air Conditioning
lets, the defrost (windshield) outlets, or a combination
of these outlets. Nine air selection modes are avail-
able on a system without air conditioning. See
Fig. 7.3. A system with air conditioning has 11 air
selection modes, four of which are air conditioning
modes. See Fig. 7.4.
Air Selection Switch Without Air
Conditioning
1. Face Mode: Directs all airflow through the face
or instrument panel outlets.
2. Selection between Face Mode and Bi-Level
Mode: Directs 75 percent of the airflow through
the face outlets and 25 percent through the floor
outlets.
3.
Bi-Level Mode: Directs the airflow equally to the
face outlets and the floor outlets.
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3. Temperature Control Switch
4.
Selection between Bi-Level Mode and Floor
Mode: Directs 25 percent of the airflow through
the face outlets and 75 percent through the floor
outlets.
5. Floor Mode: Directs all airflow through the floor
outlets.
6. Selection between Floor Mode and Floor/
Defrost Mode: Directs 75 percent of the airflow
through the floor outlets and 25 percent through
the defrost outlets.
7. Floor/Defrost Mode: Directs the airflow equally
to the floor outlets and the defrost outlets.
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