Hi guys I'm working on a boat that has x2 chilled water systems. One is for redundancy.
I've been asked to come up with a controls system to cycle each chiller every 200 hours.
The compressors are bitzer screws(star Delta start up) with 25/50/75/100 capacity control.
Can anyone recommend a control system that could cycle dutys and control compressor capacity.
I've been looking at the carel pco but I can't find any info on software to program them