Refrigerated merchandiser with foul-resistant condenser

A refrigerated merchandiser comprising:

• an enclosure defining a refrigerated display cabinet;
• an evaporator disposed in operative association with the refrigerated display cabinet;
• a compartment heat insulated from the refrigerated display cabinet
• a condenser disposed within said compartment;
• a condenser fan disposed within said compartment in operative association with said condenser;
• and
• a compressor disposed within said compartment and connected in refrigerant flow communication with said evaporator and said condenser for circulating refrigerant through said evaporator and said condenser;
• said condenser having at least one first tube bank and at least one second tube bank, each tube bank being an unfinned serpentine tube having a plurality of a parallel, straight tube rows extending between a pair of spaced end plates, the tube rows within each tube bank being spaced apart at a transverse spacing St, the first and second tube banks being disposed such that respective tube rows are offset in a staggered arrangement with an offset SS of not greater than 0.25 St.