Chapter 5 Basic Duct Symbols and Drawings 109
Copyright Goodheart-Willcox Co., Inc.
5.4.3 Dampers
Even the simplest air distribution system has numerous dampers installed
in it. Dampers are moveable panels that change their position, manually
or automatically, to control airfl ow through a particular duct system. A
variety of dampers and their symbols are shown in Figure 5-51.
Dampers perform many functions and are operated in a number of
ways:
■ Manually operated dampers. This most basic style of damper is used
to balance the air distribution system to ensure the proper amount
of air is delivered to each area the system serves.
Undercut door
Goodheart-Willcox Publisher
Figure 5-50. An undercut door.
VD VD
MD EOD
BDD
Volume dampers
Motorized and electrically operated dampers
Back draft damper
Goodheart-Willcox Publisher
Figure 5-51. Symbols for various dampers.
Copyright Goodheart-Willcox Co., Inc.
5.4.3 Dampers
Even the simplest air distribution system has numerous dampers installed
in it. Dampers are moveable panels that change their position, manually
or automatically, to control airfl ow through a particular duct system. A
variety of dampers and their symbols are shown in Figure 5-51.
Dampers perform many functions and are operated in a number of
ways:
■ Manually operated dampers. This most basic style of damper is used
to balance the air distribution system to ensure the proper amount
of air is delivered to each area the system serves.
Undercut door
Goodheart-Willcox Publisher
Figure 5-50. An undercut door.
VD VD
MD EOD
BDD
Volume dampers
Motorized and electrically operated dampers
Back draft damper
Goodheart-Willcox Publisher
Figure 5-51. Symbols for various dampers.