Hydratec Inc.

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Standalone HydraCALC (Location)

Button: Calculate Function: Calculation Results Error Type: System is -nan(ind) psi

Description:

After calculating the system, the results show, "Your System Has a Deficit"

System is -nan(ind) psi over the Water Supply Curve

Solutions:


1.
Cause:

The end user somehow got a negative sign into the Fittings column

Solution:

Don't put negative fittings in the Ftgs column


2.
Cause:

Missing water supply information

 

It's possible the -nan(ind) is legit if a demand calc is being run.

 

Solution:

Verify you have a legitimate water supply in the calculation


3.
Cause:

There are pipes with zero length.

Solution:

Correct input so all pipes have a positive length.

Updated: July 25, 2025, 2:21 p.m. Created: Aug. 11, 2021, 3:31 p.m.