Duct/Distributor Assembly - Fiat Bravo Service Manual

Bravo-Brava
98 range
D U C T / D I S T R I B U T O R A S S E M B L Y
The assembly illustrated in cross section in the diagram below is the main component of the system and
consists of a duct (1) and a heater-distributor assembly (2).
The duct (1) consists of t w o parts, a lower one and an upper one; the right part of the latter is shaped in
such a way that it matches perfectly w i t h the right upper surface of the dashboard (area below the w i n d -
screen by the bulkhead between the engine compartment and the passenger compartment) w h i c h it is
in contact w i t h .
There are t w o rectangular shaped openings in the upper part of the duct at the top on the right side; the
first is in an almost horizontal position matching with the one in the dashboard and therefore in contact
w i t h the outside ambient, whilst the other one is facing the passenger in an almost vertical position, al-
l o w i n g the intake of air in the passenger compartment.
There is a flap (3) fitted on the inside of the duct, at the top, w h i c h is directed by a special actuator
w h i c h can take up a position between closed and one of the above mentioned t w o openings.
There is an electric fan (4) fitted inside the duct in the lower part by the above mentioned openings
w h i c h , w h e n supplied at different voltages, can rotate at different speeds.
The heater-distributor assembly basically consists of a casing w h i c h houses the f o l l o w i n g , in order:
- a mixture flap in the centre w h i c h , directed by a knob via a cable either does or does not allow the e n -
tire air f l o w introduced by the fan (4) or part of it to come into contact w i t h the finned surface of the
heater radiator ( 5 ) ;
- the heater radiator (5) in the centre at the bottom, w i t h inlet and outlet connectors projecting beyond
the right side surface of the above mentioned assembly;
- four flaps, at the t o p and the front, w h i c h , directed by a knob via a special actuator, a toothed sector
and a splined disc w i t h a distribution function, either shutter or completely close the section of the i n -
ternal ducts w h i c h direct the air to the footwell vents, the front vents and the vents for demisting the
windscreen.
The evaporator (6) is located between the duct (1) and the distributor ( 2 ) .
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