VAV vs VVT | HVAC-Talk: Heating, Air & Refrigeration Discussion
Jan 26, 2005 · The VVT system relies heavily upon all the distributed zones having similar conditions.It is a cheap setup IMO to provice any heat to an area it must stop cooling the others . We are not …
Carrier iVu RTU open factory application programs - HVAC-Talk
Aug 30, 2013 · Can anyone share the factory password or the factory option to access the carrier rtu open, VVT, and VAV canned programs in snap? Not trying to modify the program, I just want to be …
Carrier VVT help - HVAC-Talk
Oct 3, 2013 · VVT is one of my weaknesses. I have never install or had any training. I know there are different generations. Does anyone have a cheat sheet of sorts for troubleshooting? I have a no heat …
Carrier V3 VVT System - HVAC-Talk
Jan 16, 2003 · Can anyone give me a quick run down on the addressing of these controllers? I have several AHUs, with bypass controllers, master zones, and several VVT controls per AHU (less than …
Circon controller for Aaon RTUs, VVT system - HVAC-Talk
Aug 22, 2006 · Most VVT systems don't control to SAT, they fire stages based on the max (voted) demand for heating or cooling and assume the system is sized to accomodate. Assuming SAT is …
Carrier i-Vu VVT Bypass II Controller Issues - HVAC-Talk
Jun 8, 2021 · We recently inherited a Carrier i-Vu job with quite a few VVT systems. Today we were on site troubleshooting some issues in regards to some of the bypass dampers. We had two bypass …
Old carrier VVT zone controller/actuator info - HVAC-Talk
Apr 14, 2011 · Old carrier VVT zone controller/actuator info I am replacing an old Carrier VVT system with the white zone controller/actuators with the circuit board on them. I want to reuse a few of those, …
JCI - Metasys vs. Facility Explorer - HVAC-Talk
Oct 14, 2009 · Metasys is for JCI branches and Facility Explore is for their agents and is more for commercial work. I remember there is a package VVT controller line in facility explorer. You can't get …
Older Carrier VVT SAT sensor ohms? - HVAC-Talk
Sep 19, 2011 · I am replacing some zone controls on an older Carrier VVT system, and I am trying to check the SAT sensor type for reuse on the new stuff. This is the little gray cable with thermistor that …
california economizers - HVAC-Talk
Aug 10, 2005 · What is the difference between a california economizer and the Carrier VVT system? I'm not asking for a hardware or firmware comparison, but a logic comparison. Also, with the system in …