I'm having some issues with my chillers short cycling. We have four chillers with fixed flow primary pumps, variable flow secondary pumps, and an open bypass. When the secondary flow requirement increases beyond the primary pumps another chiller is staged on since we get reverse flow through the...
I have a secondary loop VFD controlled with 10+ 2-way modulating valves and two 3 way valves. The VFD control is currently set to maintain a specific dp. In the winter time, the flow that this loop maintains is beyond what one chiller with a constant flow pump can provide (actual load in tons is...
