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HVAC
NCI Commercial System Performance Specialist
Building Pressure Management
Knowledge Check
Building Pressure Management
Knowledge Check
Knowledge Check
1 / 15
A commercial building measuring -0.04 inches w.c. (negative pressure) relative to outdoors experiences what specific infiltration-related problem on a humid summer day?
A
Window seals fail and allow solar heat gain to increase beyond design values
B
The negative pressure pulls conditioned supply air back through return grilles
C
Cold outdoor air enters around door frames causing heating system overload
D
Hot, humid outdoor air infiltrates through every crack and opening, increasing latent cooling load and causing condensation on cold surfaces near exterior walls
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