Per the LEED Reference Guide, standard refrigerators, small water coolers, and small HVAC units with less than 0.5 pounds of refrigerant are not considered base building equipment and are exempt from the prerequisite.However, if you have larger versions of these pieces of equipment, like a large refrigerator or larger window air-conditioning unit, that has more than 0.5 pounds of refrigerant, you do need to address those in your refrigerant management plans. The key factor is not so much the equipment type, but the amount of refrigerant. This is discussed in LEED Interpretation #10127 dated 11/1/2011.
If there is no recorded leakage over the last 12 months, you must use 0.5% for the Lr value, which represents the low end of the allowable range. However, if the equipment is under separate management control (for example, a refrigerator owned by a tenant), you may use the 10% exemption to ignore that equipment (up to 10% of the floor area can be ignored if it is under separate management control).