cheese...u r very right on the part about having to tune the flowrate to an optimum level for chiller to not kick in so often
actually, for me i guess i'm not concerned with chiller kick in often elec bill go up
rather, i'm afraid kick in so often will damage the parts!...although i'm no expert on chiller technology but then its jus worrying to see chiller kick in so often!!
btw, jus to share some optimum flowrates i found with this chiller
at 25degrees, i found that it doesn't kick in often with a flowrate of 2500L/hr
at 27, flowrate is 2000L/hr
this is my experience and doesn't necessary reflect a absolute truth