PENNINGTON, N.J. — Kooltronic Inc. announced that its Hazardous Location (HL) Series line of air conditioners has been granted a patent by the U.S. Patent & Trademark Office (U.S. Patent No. 9,157,670 B2). The company said the cost-effective, streamlined design encompasses two separate/sealed compartments, and utilizes the electrical enclosure’s existing purge system, representing a major advance in safety and reliability.

The HL Series is designated for use in National Electric Code (NEC) Class I, Division 1, Groups A, B, C, and D Type X purged enclosures; Class I, Division 2, Groups A, B, C, and D Type Z purged enclosures; Class I, Zone 1 Groups A, B, C, and D hazardous locations, Type X purged enclosures and Class I, Zone 2 Groups A, B, C, and D Type Z purged enclosures. These units are also suitable for Class I, Zone 1, Groups IIA, IIB plus hydrogen and IIC, as well as Class I, Zone 2, Groups IIA, IIB plus hydrogen and IIC.

With capacities up to 24,000 Btuh in single- and three-phase power, the HL Series is UL listed under UL 484 and recognized under National Fire Protection Association (NFPA) 496, and maintains National Electrical Manufacturers Association (NEMA) 12, 3R, 4, and 4X enclosure ratings per UL 50. A number of features such as a programmable thermostat, compressor short cycling protector, and Hi/Lo temperature alarm are standard. The company said these units are offered at a lower cost and are easily maintained when compared to traditionally designed hazardous location units.

Typical applications include oil refineries, paint and varnish manufacturing plants, petrochemical sites, and hazardous materials storage facilities. These stainless steel units are used where hazardous gases may be present and are also suitable for corrosive environments.

Kooltronic products are specifically designed to cool the interior of electrical enclosures, increasing the lifespan and reliability of heat sensitive components.

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Publication date: 12/3/2015

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