4
2.0 Diagrams of Air Flows
(cont’d)
VF0025
VF0002
during
air exchange
during circulation
and defrost
FILTERED AIR
TO BUILDING
STALE AIR
FROM BUILDING
FRESH AIR
TO BUILDING
STALE AIR
TO OUTSIDE
STALE AIR
FROM BUILDING
FRESH AIR
FROM OUTSIDE
MODELS
2000 HE, 3000 HE, HE 1.8, HE 2.6