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N°5 – Mixing plenums in in-line boxes training (VTC to A level)

When air handling units are made up of 2 in-line boxes, the outside view of the plenum is less simple, but operating is similar.

Question  

Indicate on the unit below:
-The fresh air damper
-The recirculated air damper
-The exhaust air damper




Question  

Indicate below:
-The direction of air circulation for operating 100% fresh air.
-The corresponding position of the dampers (O for Open and C for Closed).




Question  

Indicate below:
-The direction of air circulation for operating 100% recirculated air.
-The corresponding position of the dampers (O for Open and C for Closed).




Question  

Indicate below:
-The direction of air circulation in the unit below for operating 100% fresh air.
-Indicate the nature of the air in circulation: fresh air, blown air, return (or extracted) air, exhaust air.
-The position of the dampers (O for Open and C for Closed).