Mercedes-Benz 300 SD-TURBO DIESEL 1983, Owner'S Manual

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Automatic Climate Control
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§§ Economy setting — Ventilation
I f Normal setting — Cooling
H Economy setting — Heating
I f Normal setting — Heating
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H EC (ECONOMY) = Economical setting; the air
conditioning compressor stays off.
In any other settings, the air conditioning compressor
comes on with ambient temperatures above + 2° C/
36° F.
We recommend this operation to be performed with
cool outside temperatures, so the air conditioning
com pressor stays off in order to save fuel.
In the ventilation mode, air is emitted from outlets (4), (5)
and (6) only.
In the heating mode, air is primarily supplied to the foot
area. In addition, air is also supplied to the front doors.
Only enough air is supplied to the windshield and air
outlets (5) and (6), in order to keep the glass defogged in
normal weather conditions. In the heating mode, air will
be emitted periodically from outlet (4).
With cold outside temperatures, the fresh air supply and
the blower remain turned off until the engine coolant has
warmed up slightly.
H Normal Setting
We recommend this setting with humid and warm
outside temperatures.
The setting @ corresponds with setting H but, in addi­
tion, the air can be cooled or preheated as necessary.