York 015-04023-000 Piping Retrofit Kit

Beginning in the fall of 2004, Copeland compressors used in YCAL/YCUL/YPAL Style C models, changed from a 4-pipe system to a 3-pipe system as a result of a Copeland compressor design change to reduce cost. The original compressor design used a 4-pipe system on YCAL/YCUL/YPAL Style B and early Style C consisting of discharge, suction, pressure equalization (1 3/8”) pipe, and oil equalization (3/8”) lines. The new compressor design utilizes a 3-pipe system consisting of discharge, suction, and (7/8”) combination pressure/oil equalization lines.

As a result of the change, replacing a defective compressor in the fi eld on a product manufactured prior to the Fall of 2004 will require a fi eld piping modifi cation. From the Fall of 2004 through the Summer of 2005, Copeland temporarily supplied a replacement compressor that would allow installation into a 4-pipe system. These compressors are no longer being manufactured. The compressor piping on a 4-pipe system must now be modifi ed from the original 4-pipe system to a 3-pipe system. This change will not affect the operation or the reliability of the unit. The 4-pipe system has proven reliability on models 0014–0086 and 0043–0275 (50Hz), while the 3-pipe system has a proven reliability record on the larger models 0090–0140 and 0287–0377 (50Hz).