Error handling Loop Pumps and Branch Pumps

Hi, @MingboPeng, I Hope you are doing well.

I am trying to model a 2-boiler system with 2 Pumps on the loops and the 2 smaller pumps on the boiler nodes.

The reference version of OpenStudio model looks something l like this: but even openstudio is throwing up the same error. But Modeling branch and loop pump in OS 2.1 - Unmet Hours shows, that is has been done in the past, so just wanted to know that whether the newer version has stopped allowing that, or i am doing something wrong in the same?

I would appreciate your feedback on the same.

Thanks and regards
Kartikay Sharma

Hi @kksharma3951,

Yes, this is one of the new restrictions in the newer OpenStudio.
Have you tried to move your return pump to the last position of the demand loop?
image

I realized I never responded to this.

This was sorted in the end, as we decided not to model such complexity.

Thanks for your response, though,

Regards
Kartikay Sharma