refrigeration piping blocks the planned duct route retail grocery refrigeration pipe blocks duct grocery overhead clash suction liquid line case piping document the conflict and compare the current mechanical, refrigeration, and coordination drawings before moving either system. refrigeration piping may have slope, insulation, valve-access, and replacement-path needs that are not visible on the hvac plan. at grid [location], the refrigeration lines occupy the coordinated duct elevation. i checked both current drawings and measured the conflict. do you want the duct route held while the trades re-coordinate this area?