The way my pool skimmer and drain lines were plumbed was a line from the skimmer to a jandy 3 way valve and a line from the 2 drains to the 3 way valve. This then leads into my pump and filter. My builder told me there is not direct connection between the drains and skimmer and the second hold in the skimmer is pluged for that reason. I am not a plumbing expert but I do know that this is one correct way to plumb them from research I have done. When I vacumn I set the jandy on skimmer only and in normal operation I have found I get best results by setting it on 1/4 skimmer 3/4 drain (in other words, not directly in the middle but between the middle and drain only). In my pool this results in allowing the circlation system to pull the stuff from the bottom into the filter and still gives me good surface skimming. I arrived at this by trial and error to see what position kept the pool cleanest for the longest time.
So to answer your question, yes, if the skimmer is plumbed separately from the drains it is entirely possible that the skimmer will have only one open hole although it is possible that it would have both holes open also if the equalizer line has been installed to the drain. Actually, from the research I have done on the net it seems that having the skimmer plumbed to the pump and having the front hole plugged is the rule rather than the exception.
Here is a link that might help explain it better than I can
http://www.poolplaza.com/pool-school...skimmers.shtml
Hope this has been some help to you!
Reply With Quote
Bookmarks