Subaru 2002 Impreza Service Manual page 377

AIR CONDITIONER
HVAC System (Heater, Ventilator and N C )
C: COOLING UNIT
The heater unit and cooling unit are integrated into a single "heater and cooling unit".
The cooling section components of this unit include an evaporator, expansion valve, and case.
U
NF0454
1. EVAPORATOR
The evaporator is a laminated type.
When a low-pressure, low-temperature refrigerant is sprayed by the expansion valve into the
evaporator, it evaporates and cools the evaporator surfaces.
The cabin air is drawn by the blower and cooled down as it flows over the evaporator. The cooled
air then flows passing through the heater unit and delivered into the cabin through versions outlets.
NF0174
(A)
Flow of refrigerant
(B)
Outlet
(C) Inlet
AC-13