Matt
22-03-2004, 02:03 AM
This forum is the best!
I'm sitting here with my dogs thinking of times in the recent past when I questioned my judgement on a job. What better place to let my thoughts fly, wether I get an "ataboy" or a " you screwed up".
The facts: A 20 ton Contenentel chiller, process cooling at 45 df, two scroll compressors, low ambient options.
The question: What should the cut-in and cut-out pressures be on the two fans per ckt. when I have headmasters trying to maintain 170#.The microprocessor can be set for whatever you want.I get confused when I see two methods of head pressure control used at the same time. Am I correct in setting the fans higher than the headmaster. So as to keep a solid column of liquid to the valve without the headmaster going crazy trying to offset the fans if I were to set them lower?
Thanks in advance!
I'm sitting here with my dogs thinking of times in the recent past when I questioned my judgement on a job. What better place to let my thoughts fly, wether I get an "ataboy" or a " you screwed up".
The facts: A 20 ton Contenentel chiller, process cooling at 45 df, two scroll compressors, low ambient options.
The question: What should the cut-in and cut-out pressures be on the two fans per ckt. when I have headmasters trying to maintain 170#.The microprocessor can be set for whatever you want.I get confused when I see two methods of head pressure control used at the same time. Am I correct in setting the fans higher than the headmaster. So as to keep a solid column of liquid to the valve without the headmaster going crazy trying to offset the fans if I were to set them lower?
Thanks in advance!