Fiat Ducato Owner's Handbook Manual page 60

LOOKING AFTER THE
SYSTEM
During the winter, the climate con-
trol system must be turned on at least
once a month for about ten minutes.
Before summer, have the system
checked at a Fiat Dealership.
The system is filled with
R134a refrigerant which
will not pollute the envi-
ronment in the event of leakage.
Under no circumstances should
R12 fluid be used as it is incom-
patible with the system compo-
nents and contains CFC.
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SELF-STANDING SUPPLEMENTARY
HEATER (where provided)
The vehicle can be equipped, upon re-
quest, with two different self-standing
heaters: one is totally automatic
whereas the other is programmable.
AUTOMATIC VERSION
The supplementary heater is totally in-
dependent from the engine.
This heater is switched on automat-
ically (if required) when turning the ig-
nition key to MAR.
though, of course, to a lesser degree
and therefore to avoid intoxication
and suffocation, never use the sup-
plementary heater in closed areas,
garages or workshops not equipped
with specific exhaust evacuation
devices even for short periods of
time.
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WARNING
The heater burns fuel in the
same way as the engine,
PROGRAMMABLE VERSION
The supplementary heater is totally
independent from the engine and can
be used to:
– heat the passenger compartment
when the engine is off;
– defrost the windows;
– heat the engine coolant and con-
sequently the engine before starting.
The system consists of:
– a diesel burner to heat coolant with
exhaust fume muffler;
– a metering pump connected to the
vehicle fuel pipes to feed the burner;
– a heat exchanger connected to the
engine cooling system pipes;
GETTING TO KNOW YOUR VEHICLE
59