Chapter 5 Basic Duct Symbols and Drawings 93
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Goodheart-Willcox Publisher
Figure 5-11. The primary supply and return trunks are in-line with the direction of
airfl ow through the air handler.
Primary
return trunk
Primary
supply trunk
Goodheart-Willcox Publisher
Figure 5-12. A 1-C supply air fi tting is connected to the supply plenum to redirect the
supply airstream.
Return air
Supply plenum
Air handler
Supply
air
1-C