How to open a Voyager outdoor air damper based on CO2 sensor info from VariTrac boxes, all tied to a VariTrac changeover-bypass (COB) system?

Issue:

How to open a Voyager outdoor air damper based on CO2 sensor info from VariTrac boxes, all tied to a VariTrac changeover-bypass (COB) system?

Resolution:

VAV UCM IV has a CO2 connection and communicates this to the VariTrac III CCP, which does CO2-Based Demand Controlled Ventilation. The program has four configuration settings: CO2 normal level (ppm), Minimum ventilation damper position (%), CO2 peak level (ppm), Maximum ventilation damper position (%). The program can be configured (through VariTrac software only) to use one zone CO2 sensor as its source, or it can be configured to hunt through all zones with sensors attached and use the highest value.

 

Other Question/Problem/Cause Statements:

• How to open a Voyager outdoor air damper based on CO2 sensor info from VariTrac boxes, all tied to a VariTrac changeover-bypass (COB) system?

Facts:

• VariTrac III Central Control Panel (CCP)
• VAV UCM
• Voyager/Precedent
• VAV nonLonTalk
• Voyager/Precedent nonLonTalk

Original wave: wave6037