Hazardous Location Series HL58LVClass 1 Division 1 and 2 Air Conditioners

The Hazardous Location Series HL58LV is a Class 1 Division 1 and 2 air conditioning unit specifically engineered to maintain precise temperature control in explosive and hazardous environments while meeting the strictest regulatory requirements. All models are UL Listed per UL 484 for Special Purpose Air Conditioners and UL Recognized per NFPA 496: 2013 for Purged and Pressurized Enclosures. The unit meets NEC Class I Division 1, Groups A, B, C and D when paired with an approved Type X Purge System, and satisfies NEC Class I Division 2 requirements with a Type Z Purge System, making it suitable for a wide range of hazardous location classifications. With a T-4 temperature classification rated to 275F/135C and CE compliance, this unit delivers dependable performance in the most demanding industrial settings.

The HL58LV features closed-loop cooling technology that completely isolates the sensitive component compartment from ambient airflow, preventing contamination and maintaining a cool, dehumidified environment free from external air intrusion. A compressor short cycle protector safeguards against damage from frequent restarts caused by fluctuating heat loads, solar gain, or power interruptions, significantly extending compressor life and reducing maintenance costs. The programmable thermostat and temperature alarm provide precise control and early warning capability, allowing operators to maintain optimal conditions and respond proactively to temperature deviations.

Constructed to withstand harsh operational environments, the unit incorporates internal corrosion protection with air-cured coatings on brazed condenser joints that resist 1000 hours of salt spray per ASTM B 117 testing standards, along with painted condenser and evaporator coils for added durability. Multi-layer aluminum grid filters with aluminum frames keep internal components clean, with replacement filters readily available online. The cabinet maintains NEMA Type 12, 3R and 4/4X enclosure ratings, with stainless steel shell options available for severe corrosive applications. Additional features include interior and exterior purge connections, pressure compensation terminal block for auxiliary supply attachment, and shock and vibration resistance certified for minimum 4-hour operation at 1G acceleration in two planes. The unit operates on zero ODP refrigerant R410a, meeting environmental standards while delivering efficient cooling performance.