Referring again to Figure 9 the vertical portion of thedrop legs should be sized as a liquid line. Thehorizontal header draining to the receiver should besloped 1/4” per foot (20mm/meter) towards thereceiver and be sized for a sewer flow. Note that thehorizontal header itself is not trapped. The equalizingline runs from the receiver to a centrally locatedposition in the discharge line feeding the condensers.Under no circumstances should this line tie into theoutlets of multiple condensers as this has the sameeffect as eliminating the traps. It will cause bottling inthe condensers with the lowest outlet pressures.
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