Chapter 5
Site Preparation
Electrical and Environmental Guidelines
144
Figure 5-5 Above Ceiling Ducted Air
Humidity Level
Maintain proper humidity levels. High humidity causes galvanic actions to occur between some dissimilar
metals. This eventually causes a high resistance between connections, leading to equipment failures. High
humidity can also have an adverse affect on some magnetic tapes and paper media.
To and From Air Handling
Unit (if used)
Supply Air
Ductwork
Roof Or Floor
Slab Above
Ducted Return
Air (DRA)
Return Air Grill
Ceiling
Ceiling
Typical Computer
Air Discharge
Computer Air
Intake
Supply
Up-Flow AC
Equipment
Cooled Air
Slab Floor
Diffuser
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