All of the dash-face outlets have adjustable louvers
that pivot right, left, up, and down. The outlets can
be closed by moving the louvers all the way down.
Windshield defrost outlets and the passenger’s door
window defrost outlet have nonadjustable louvers.
The bunk outlet (at the right-hand rear corner of the
bunk) has two sets of vertical louvers that operate
like the horizontal dash-face louvers.
The sleeper heater and air conditioner is installed in
the right-side baggage compartment and uses the
cab’s refrigerant system for air conditioner operation.
The sleeper heater and air conditioner is equipped
with a separate evaporator coil, expansion valve, and
fan. It is also equipped with its own heater core and
water valve, independent of the cab heater. The
sleeper climate control panel is mounted on the right
rear wall or the rear overhead storage compartment.
See
Fig. 4.8
.
NOTE: Shutting off the heater supply gate valve,
if equipped, on the engine limits the ability to
control air conditioning temperature in the cab
and in the sleeper. With the valve shut off, warm
coolant is no longer available from the engine
and the outlet air temperature controls can’t be
used to change air temperature.
A fresh air/recirculation switch is standard equipment
when there is no air conditioning. See
Fig. 4.7
. This
control is an option when air conditioning is ordered.
It allows the cab to be ventilated with either fresh or
recirculated air. When the air selection switch is ro-
tated to the maximum air conditioning position, the
system uses
only
recirculated air, regardless of
whether fresh or recirculated air has been selected.
See
Fig. 4.6
.
When the air selection switch is set to air condition-
ing and recirculated air has been selected, the sys-
tem functions the same as when the air selection
switch is set at maximum air conditioning.
The fan bunk switch on the cab climate control panel
overrides the sleeper climate control panel. See
Fig. 4.7
. For increased ventilation in the sleeper, put
the switch in the HI position. For normal fan and tem-
perature operation, put the switch in the middle posi-
tion. To turn the fan in the sleeper off, put the switch
in the OFF position.
NOTE: When the bunk fan switch is in the OFF
position, the sleeper temperature control will
default to the heat mode. The sleeper fan will
blow hot air when any air conditioning mode is
selected. To operate the temperature controls,
move the bunk fan switch to the middle position.
A cab exhaust system is included with sleeper cabs.
When the climate control unit is set for fresh air, 300
cubic feet per minute of air is provided to the sleeper
cab and exhausted through a vent in the left rear
area of the sleeper. When the system is activated,
10/26/95
f830717
1
2
3
4
5
1.
Fan Switch
2.
Air Selection Switch
3.
Temperature Control Switch
4.
Fresh Air/Recirculation Switch
5.
Bunk Fan Switch
Fig. 4.7, Climate Control Panel, Heater Only
10/04/95
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1
2
1.
Temperature Control Switch
2.
Fan Switch
Fig. 4.8, Sleeper Climate Control Panel
Heater and Air Conditioner
4.5
