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1 more E.S.P. question

1 more E.S.P. question

1 more E.S.P. question

(OP)

I also have a similar question regarding "External Static Pressure".   

 When viewing BLOWER DATA info on, for example, Trane XV80 gas furnace, External Static Pressure is always a factor on the chart, and is a fairly important one.

  Where, and at what point exactly, do you insert test tube in duct? Also, do you insert low tube in R/A duct at the same time as high tube in S/A duct? Is that ".45" you are seeing at that point, your ESP that you are trying to determine?
  This exact manner in wich this measurment is performed has always been a big "?" for me, as it seems everybody has a differing view as to how it is correctly performed.

            PLEASE HELP!     Thanks, Rockhead

 

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