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Crusader
MC-8
[ ""' 16-1
MAINTENANCE
DATE~J~uly'---L--,
__:_:_:197' - -=--3
~l
MANUAL
HEATING
&
AIR CONDITIONING
HEATING SYSTEM
The coach is provided with a hot water forced-
air heating system which uses the engine cooling
medium for heating the interior of the vehicle and
windshield defrosting. Two heating radiator cores are
provided, one for the main interior heating system
and one for the driver's heater and defroster.
.
.
A complete air conditioning system is installed as
standard equipment. The same duct system is used for
both air conditioning and heating.
An optional auxiliary air conditioning evaporator
and blower unit is mounted at the extreme rear of the
left hand side parcel rack. This unit operates in con-
junction with the main coach air conditioning system
and is controlled by its own coach temperature sen-
sing unit. This auxiliary air conditioner can be used
with either Freon I 2 or with Freon 500. The purpose
of this unit is to provide additional cooling at the
rear of the passenger compartment.
Flow of hot water to the main heater core is con-
trolled by an electric water valve. A manually-
operated water valve controls the flow to the driver's
heater core. In the engine compartment, manually-
operated shut-off valves are provided to isolate the
heating system in the event of system failure or when
the cooling system is to be drained.
A temperature sensing unit is located in the front
right hand wall return air duct and, through relays,
controls the main heater water valve within limits
selected by means of the heat control dial on the
driver's switch panel.
Driver's fresh air located to
the left of the driver under
the dash
Driver's heoter or air conditioning
Gasper located to the right of the
driver under the dash.
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Fresh air intake above
Ti re Compartment
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