Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
-
VVT Systems
A couple of questions I forgot to ask in reference to VVT Systems: 1. Is an airflow pickup required at zone damper locations. 2. How is VVT system different from a standard VAV box type of system. Thanks again!- ddcman
- Post #2
- Forum: HVAC/R engineering
-
VVT Systems
Can anyone explain how a Variable Volume Variable Temperature (VVT) HVAC control system works, specifically, how should the zone dampers be controlled, and how should the bypass damper be controlled. Thanks- ddcman
- Thread
- Replies: 1
- Forum: HVAC/R engineering
-
Piping low port of a duct Static Press Probe for VFD control?
Typically, the high port of a duct static pressure transmitter is piped 2/3 distance down the longest supply duct when used for control of an air handling unit variable frequency drive. It is common practice to simply leave the low port vented to atmosphere. This causes problems if the...- ddcman
- Thread
- Replies: 1
- Forum: HVAC/R engineering
