Works a new air unit temperature control system is proportional integral temperature controller installed in the supply air duct temperature sensor and electric control valve. The controller's role is to put air duct temperature sensor detected air temperature is transferred to the thermostat set temperature controller compares Horizontal fresh air unit, and select the new air unit based on the results of operations of PI thermostat for electric control valve an on / off signal valve, so that the air temperature is maintained at the desired range. Safe operation of the proposal to establish and improve the operation and management system. New air handling units at night also deactivated using fixed water flow control valve or the thermostat is turned on or set up automatic electric heating device to ensure that the new air unit heater temperature. To regularly inspect lifting winter fresh air unit running the new wind generating units, tracking weather changes, in cold weather should arrange commissioning and maintenance of air conditioning systems in order to ensure the safety of air conditioning water system operation. Horizontal new air conditioning units _ Rui Xincheng (certified) _ Zhoukou 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.