Trane TRG-TRC014-EN manual period three, Perimeter Spaces, System Configurations

period three

System Configurations

notes

and equipment. Interior spaces on the top floor of a building often need to be treated as a perimeter space due to the heat gain/loss from the roof.

Each space is typically served by an individual VAV terminal unit, allowing independent cooling and heating control.

Perimeter Spaces

overhead heating

perimeter heating

Figure 57

Perimeter Spaces

Before a VAV terminal unit can be selected to serve a perimeter space, the designer must determine the heating load for that space. This will determine whether the heating load can be satisfied by supplying warm air through overhead diffusers or if the heating load must be handled by a separate perimeter heating system (e.g., baseboard wall fin).

The guideline for heating a perimeter space is based on the skin heat loss per unit length of perimeter wall.

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