SMART 453 Series Introduction Into Service Manual page 91

Climate control
Heater and refrigerant circuit
The heat exchanger of the heater circuit has a heat output of
8.7 kW. The output of the flat-tube evaporator is 5.8 kW. The
refrigerant compressor features two-stage control (on/off)
and is integrated into the belt drive by a clutch.
Air outlets of the interior climate control system
90
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Preventing ice and fogging
When the Defrost Max position is activated, the maximum
air flow is directed against the windshield depending on the
engine temperature to remove any ice and fogging. The air
conditioning is switched on to dry the air depending on the
outside conditions.
The following air vent openings are distributed through the
vehicle:
• Defroster vent along entire length at bottom of windshield
• Fixed side defrosters on side of cockpit
• Swiveling center air vents pointing into the passenger
compartment
• Swiveling round side air vents
• Cross duct with two outlets in the footwell for driver and
front passenger
Introduction of the New smart fortwo coupé and smart forfour | Model Series 453
P83.10-2901-00