Figure 7-6.Package type of air-conditioning unit showing airflow patterns.
Figure 7-7.A refrigerant cycle of a package air conditioner.
Figure 7-8.Air-handling components of a package type of room air conditioner.
referred to as PACKAGE units, as the entire system is
located in the conditioned space. These larger units,
like window units, contain the complete system of
refrigeration components. A self-contained unit with
panels removed is shown in figure 7-9. These units
normally use either a water-cooled or air-cooled
Self-contained units should be checked regularly
to ensure they operate properly. Filters should be