

Liebert® PEX4 series are medium‑to‑large‑size precision air‑conditioners designed for high return‑air‑temperature applications where customers require high energy efficiency and reliability. It adopts full‑time free‑cooling technology. Its EER reaches 4.5 under rated heat load and exceeds 6 at 75% heat load. Modular variable‑frequency design delivers dynamic cooling and supply‑air temperature control, greatly improving Annual Energy Efficiency Ratio (AEER). Its energy efficiency is increased by 80% compared with conventional air‑cooled air‑conditioners, reducing annual power consumption by 33.8%. Equipped with 9‑inch Chinese graphic LCD touch screen and powerful group‑control and communication functions. It uses environmentally‑friendly R410A refrigerant. Cooling capacity ranges from 20kW to 120kW.
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