Description | New standard |
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Control, VVC plus
control is utilized in true CAV systems. Once the system is
balanced, no air flow capacity modulation is possible for the system
or the fan. When the filters are new, the resistance of the filter
is very low. This actually causes air to flow in excess of design
conditions increasing energy consumption and decreasing the life of
the filters. As the filters become clogged, the resistance increases
to the filterís maximum rating level, then they are replaced. A
differential pressure sensor is commonly utilized to monitor the
filters and identify when the filters should be changed.
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