Negativ Pressure Drop and Static Pressure

[amigost]

Hello revit mep user,

I have a big problème: in duct circulaire system i have Negativ Pressure Drop and Static Pressure values. can u help me in this issue and tell me why or coorect this problem if it is possible.

I have joined the screen shot and the revit file.

Thank you

[mvalencia25]

Looks like you are running a supply system. Make sure all your diffusers are of the correct system and that the connectors are set correctly. All supply diffusers should have the connector set as Flow Configuration: Preset, Flow Direction: In, System: Supply Air, Loss Method: Specific Loss. Also, cap any open ends to maintain a closed system.

[mehdi.kardehi565550]

plz send through your rvt file to have a look