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Heating and Air Conditioning Operating Instructions
– 38 – Y53-6008
Medium Duty (R10/06)
HEATING AND AIR CONDITIONING
Introduction
WARNING! Do not drive with your visibility
reduced by fog, condensation, or frost on the
windshield. Your view may be obscured, which
could result in an injury accident. For clear visi-
bility and safe driving it is extremely important
for you to follow the instructions on the use of
the ventilation/heating and defogging/defrosting
system. If in doubt, consult your dealer. Maxi-
mum heating output and fast defrosting can be
obtained only after the engine has reached oper-
ating temperature.
Internal air circulation control is provided by three sets of
outlets:
Front outlets on the dashboard panel, with directional
louvers
Floor outlets under the dashboard
Window defrost vents on the dashboard
WARNING! Excessive heat may cause the pres-
surized components of the air conditioning sys-
tem to explode. Never weld, solder, steam clean,
or use a blow torch near any part of the air con-
ditioning system.
•If a refrigerant leak develops in the presence of
excessive heat or an open flame, hazardous
gases may be generated. These gases may
cause unconsciousness or death. If you become
Heater and Air Conditioner Controls
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