Return air VFD fan control with return air static pressure

[dubbed]

Have a question on how to apply this correctly.
The return fan speed with be controlled with a static pressure transducer in the return duct.

my question is where to put the pressure xducer and is it suction that i need to measure.

This is what I'm using for supply duct pressure after the supply fan

http://www.mamacsys.com/PR-276features.htm

Not sure if this will work for return.

 

[MintJulep]

What is the goal?

 

[dubbed]

ok nevermind. I read the control sequence wrong.
not sure what its goal is.

 

[marcoh]

Refer to the following for further information on controlling pressurisation in a building:

http://www.trane.com/cps/uploads/userfiles/educationalresources/admapn003en_0502.pdf

 

[cry22]

The goal is typically a high limit on suction side (say above 2") to disable the fans before you get a sucked in duct.