Seresco USA Inc.: Indoor Pool DehumidifiersExpanded, the Protocol NP-Series line of indoor swimming pool dehumidifiers has added 90- to 140-ton unit sizes. Protocol units typically come as rooftop package units, and the new sizes now offer airflows of up to 65,000 cfm. The units are ideal for a large, one-piece configuration because it substitutes hundreds of pounds of vapor compression refrigerants commonly used in traditional natatorium dehumidifiers with propylene glycol, the company said. According to the manufacturer, the refrigerant reduction, which can surpass 800 pounds of refrigerant in the largest units, does not affect performance because the company’s proprietary heat rejection design makes the Protocol NP-Series equally efficient as DX systems on summer design days and 5-7 percent more efficient throughout the rest of the year.

Seresco USA Inc.

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