period two

Components of a VAV System

notes

VAV Systems

period two

Components of a VAV System

Figure 19

Next, we will examine the individual components that compose a VAV system.

Components of a VAV System

return air path

relief

fan

supply

supplyductwork fan

central

VAV

box

air handler

 

 

thermostat

 

 

 

 

 

 

Figure 20

A simple VAV system includes the following:

nCentral air handler with a variable-volume supply fan, a cooling coil, possibly a heating coil, controls, filters, a mixing box, and a return or relief fan

nSupply duct

nVAV terminal unit, or “box,” with a thermostat and supply diffusers for each independently controlled space

nThermostat and unit controller for each terminal unit

nReturn plenum or duct

The VAV terminal units modulate the airflow supplied to each space.

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TRG-TRC014-EN

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Trane TRG-TRC014-EN manual Components of a VAV System

TRG-TRC014-EN specifications

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