All,

I'm modeling a university campus building with heat provided by central
plant steam boilers, providing 15# steam. I've done this by eliminating
boilers in the model and attaching a steam meter to the hot water loop.

My problem is with pumping energy. Equest requires that a pump be attached
to the hot water loop, but the actual installation has gravity return
condensate. How do I zero out the pumping energy? I have set pump head =
0, but this gives me pages of error reports. Any other methods?

Thanks,

Steven Savich