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FATC
23
C. HEATER COIL
A heater coil is
a radiator-like device used in heating
the cabin of
a vehicle.Ho
t coolantfrom the vehicle's
engineis passed through a winding tube of the core,
a heat exchanger between coolant and cabin air.
Fins attached to the core tubes serve to increase
surface for heat transfer to air that is forced past
them, by a fan, thereby heating the passenger com-
partment.