Hazardous Location Series HL40LVClass 1 Division 1 and 2 Air Conditioners

The Hazardous Location Series HL40LV is a purpose-built air conditioning system engineered specifically for Class I Division 1 and Division 2 hazardous locations as defined by the National Electrical Code. All models are UL Listed per Standard 484 for Special Purpose Air Conditioners and UL Recognized per NFPA 496:2013 for Purged and Pressurized Enclosures, ensuring compliance with regulatory requirements for explosive atmosphere environments. The system meets NEC Class I Division 1 Groups A, B, C, and D when integrated with an approved Type X Purge System on the electrical enclosure, and satisfies Class I Division 2 Groups A, B, C, and D requirements when used with an approved Type Z Purge System. The unit carries a T-4 temperature classification rated to 275F/135C and is fully CE compliant, making it suitable for international applications.

Designed for superior reliability in demanding environments, the HL40LV features a closed-loop cooling architecture that completely isolates the enclosure interior airflow from ambient airflow or waterflow systems, preventing contamination of sensitive components with unfiltered outside air. A compressor short cycle protector safeguards against premature compressor wear by preventing rapid restart cycles caused by low heat loads, power interruptions, or fluctuating conditions--a critical feature in installations subject to solar gain or variable equipment loads. The system incorporates a multi-layer corrugated aluminum filter housed in a one-piece aluminum frame to maintain clean internal conditions, with replacement filters readily available through Kooltronic's spare parts program.

Built to withstand harsh operational environments, the HL40LV maintains NEMA 12, 3R, and 4/4X ratings through fully gasketed, leakproof construction compliant with UL50 standards. A stainless steel shell provides exceptional corrosion resistance in chemically aggressive or moisture-laden settings. The unit includes painted condenser and evaporator coils, interior and exterior purge connections, a pressure compensation terminal block for auxiliary pressure supply, and programmable thermostat and temperature alarm functions for precise temperature management and early warning alerts. Advanced shock and vibration resistance design ensures reliable operation in demanding mechanical environments, withstanding acceleration of 1G for a minimum of four hours per plane. The system operates on zero ozone-depleting R410a refrigerant, supporting environmental compliance requirements.