Building Pressurization - Verasys - LIT-12012331 - General System Information - Verasys System - 4.0

Verasys System Changeover Bypass Zoning System Design Application Note

Brand
Verasys
Product name
Verasys System
Document type
Application Note
Document number
LIT-12012331
Version
4.0
Revision date
2020-03-24
Language
English

When doors remain open during economizer operation, economizer effectiveness is reduced and there are building pressurization problems. To avoid these problems, use power exhaust functions. For systems with ducted returns, use power exhaust fans. The return duct pressure drop causes most barometric relief dampers to function poorly or not at all. The RTU can control the power exhaust whenever the economizer is operating.