For normal heating operation, set the air intake control to the fresh air () position and
the
air flow control to the floor ()
position.

For faster heating, the air intake control should be set in the recirculate () position.

If the windows fog up, set the air flow control to the defrost () position. (The A/C will be
on
automatically and "Fresh" mode will be activated.) For maximum heat, rotate the temperature control to "Warm".