Pneumatic tubing run lengths.

The maximum 925 tubing run lengths:

  •  7980 Series Control Boxes --- 50 "Linear" feet from Control Box to Door Closer.
  •  7900/7949 Series Control Boxes --- 100 "Linear" feet from Control Box to Door Closer,
  •  7900/7949 Series Control Boxes  ----   500 "Linear" feet from the Control Box to the External Compressor.

PLEASE NOTE:  If using a 7949 Series Blow Open and a 7901 or 7902 Series Control Box on the same opening the MAXIMUM 925 tubing run between the two boxes is only 5 FT.  This is indicated on front page of 7949 instruction sheet, see here.


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