Hello, all, I am a newbie using equest. I have an error for running
equest. I am right now doing system 7 baseline for a 20 floor building.
Based on the Asharea manual, it needs to have Primary-Secondary chilled
water loop. I assigned one pump for each cooler on the primary loop, and
the secondary loop is attached to the primary loop, with a secondary pump.
However, before I tried to assigned one of the coils to the secondary loop,
I keep on getting error for Sec CHW Pump has zero design flow. After I
tried to assign one of the coils to the secondary loop,. I am getting the
following error:

Pump: Sec CHW Pump has zero design flow. If attached to
a DHW loop, make sure the recirculation flow is
nonzero.

Anyone can give me some hint? I attached the screenshot for my water side
system.

Thank you so much!

Boning Liu, PhD, EIT, LEED AP