Heating And Air Conditioning Controls
PART 4: CONTROLS AND DISPLAYS
Air Conditioning System
Your vehicle may be equipped with either of two air con-
ditioning systems. Cab interior air is continuously recircu-
lated and cooled by these systems. In both systems, the
compressor, receiver-dryer, and condenser are located in
the engine compartment. (Note: In some applications, the
condenser may be mounted on the cab roof.)
Dash-mounted System
In one system, the evaporator and blower are located in-
side the heater unit, under the passenger dashboard. Con-
trols for this system are located in a modi
fi
ed heater control
head.
02981A
To cool the cab,
turn on the air conditioning system, then
adjust the air temperature and blower speed until comfort-
able. The amount of cooling is controlled by
• the temperature of the evaporator core
• the speed of the blower that forces air through the core
and into the cab
• the amount of heat added to the recirculated cab air
by the air temperature control
Ceiling-mounted System
In another system, the evaporator and blower are located
in a ceiling-mounted unit. This system’s control panel is
– 40 –
Y53-6015
R(08/07)
Summary of Contents for Peterbilt 320
Page 1: ......
Page 2: ......
Page 4: ......
Page 210: ...PART 11 SUBJECT INDEX Windshield Washer Reservoir 29 206 Y53 6015 R 08 07 ...
Page 212: ...Peterbilt Motors Company P O Box 90208 Denton Texas 76202 ...