Trane Engineered Smoke Control System for Tracer Summit, BAS-APG001-EN Variable-air-volumesystem

Variable-air-volume system

Variable-air-volume system

For variable-air-volume (VAV) systems, some form of duct pressure relief is required on each floor or in each smoke control zone. In smoke control mode, all return and supply fans will be set to their highest speed. If the VAV dampers are closed when this occurs, the duct pressure may be enough to damage the ductwork. To avoid this possibility, duct pressure relief dampers, either DDC or mechanically controlled, should be installed in the ductwork for each smoke control zone.

It should be noted that careful sizing of smoke control supply air damper and relief damper is necessary to use smoke purge and protect dampers.

Constant-volume system

For constant-volume systems in smoke control mode return/exhaust dampers are open. Therefore, separate duct pressure relief is not required, but may be necessary on each floor or in each smoke control zone, as it is for VAV systems. Supply dampers should be sized such that any one damper can spill an adequate amount of air.

UL-tested programs

This application guide showed only excerpts of UL-tested TGP programs. Programs in their entirety can be found and downloaded from the GCS Product Support Web site. These programs may or may not meet local smoke alarm requirements. In all cases, defer to local smoke control specifications.

BAS-APG001-EN 119