The company is equipped with technology development and production management professionals, with a strong production of fire fans, fire dampers series, exhaust outlet power delivery products, provides for modeling, user ordering new century building engineering, design units diverse selection of brand new air handling units, the development of the company for many years and always adhere to the "leading technology, excellent price to win, honest, quality assurance, customer first, reputation first" development strategy and services aim to fresh air units, development and production of better building new air handling units smoke control product specifications and dedication to new and old customers full dedication. Antifreeze and interlock in winter outdoor design temperature is below 0 ℃, you should consider freezing problems coil. In addition to the air conditioning system design preventive measures should be adopted in itself, from electrical and control unit, it should adopt certain measures. 1) limit the hot coil electric valve minimum opening in coil selection to meet certain requirements of the situation, in order to limit the hot coil electric valve minimum opening. Especially for the two control system of hot and cold dual-coil, especially, after the minimum opening should be set within the coil to ensure the water does not freeze the minimum amount of water Wmin; 2) Set the temperature control which is to prevent freezing during operation Another measure of the cracking coil. Usually in hot water outlet pipe plate (or coil on backwater even me) to set up a temperature sensor (controller) Lifting fresh air unit, measuring the return water temperature. When they measured values ??as low as about 5 ℃, frost controller action to stop the air conditioning units running at the same time to open a large hot water valve. Of fresh air conditioning unit _ Rui Xincheng (certified) _ Shangluo new air handling units provided by Rui Xincheng Air Conditioning Equipment Co., Texas. Texas Rui Xincheng Air Conditioning Equipment Co., Ltd. (www.dzrxckt.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Rui Xincheng conditioning in leadership with the staff warmly welcome all inquiries negotiations to create a better future Rui Xincheng air conditioning.