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Arden Hills City Hall Mechanical Assessment 2020 <br /> Direct Expansion Cooling Systems <br /> The building has (3) air cooled condensing units serving the (3) building air handling units. All (3) units <br /> are original to the building. All run on R-22 refrigerant,which is no longer legal to manufacture or <br /> import. It is now only available as a recycled or reclaimed product. All units are beginning to rust and <br /> have damage condenser coils. All have had extensive repairs over the past few years. Given the age and <br /> condition, all are near the end of their expected lives. <br /> 1. ACCU-1 is a Trane RAUCC25, 25 Ton air cooled condensing unit, serving AHU-1. <br /> Ar <br /> d.o •j <br /> �� r• <br /> 2. ACCU-2 is a Trane TTA120, 10 Ton air cooled condensing unit, serving AHU-2. <br /> IMM <br /> -------- <br /> _ �-- ------- <br /> � <br /> 5 Page <br />