Obviously, this control belongs to the variable air volume control (VAV later on control see below), this control method currently used is not a lot of new wind generating units maintenance, an important reason is that CO2 concentration controller products are not widely available (only a few manufacturers), while the larger investment that control the way brand new air handling units, which require a detailed analysis of the overall economic efficiency. The new air unit panel structure: A: Horizontal fresh air unit unit panel with double color steel structure inside and outside, between two layers of steel punch injection for high-density polyurethane or polystyrene foam insulation material than other insulation materials such as glass wool and more excellent insulation properties. In running a variety of climatic conditions and the housing conditions produced no cold bridges. B: panel using a special method of fixation and sealing material strengthening of tightness and insulation, this panel structure in thermal insulation, noise reduction and strength have the best performance, and for air quality requirements of the higher places. C: small size unit fan with external rotor motor direct drive fans, new air unit without a belt drive, easy maintenance. When the new air unit malfunction new air unit cooler winter deactivated in standing water; in the basement of the new air unit after disabled cooler winter frost crack accident, mainly due to air in the new unit has a standing water cooler. Possible reasons are as follows: (a) run cooler not open sluice valve, so that no cooler air into the channel, so the water inside the cooler can not be completely emptying, resulting in reduced winter outdoor temperatures after new wind unit cooler cracking. (B) Since there is standing water in the cold water system piping, the location of new wind generating units were lower than the main pipe system, if the connection line valves closed lax, water in the cold water supply and return water pipeline begins to slowly seep in cooler, So despite the draining operation it will still lead to the cracking of the accident. The accident may be the two reasons, one caused by fresh air unit choices, so in both areas has been improved, adding DN15 highest point in the supply and return risers discharge pipe fresh air unit, air handling units in the new deflation and when the discharge can be used, in particular, to ensure the thoroughness of the discharge; and in the fresh air supply and return water on the road of establishing an additional valve unit, completely cut off slow down bleeding problems after discharge. The new air unit | Rui Xincheng Air conditioning | Yulin fresh air unit is provided by the Texas Air Conditioning Equipment Co., Ltd. Rui Xincheng. Rui Xincheng Texas Air Conditioning Equipment Co. (www.dzrxckt.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole alliance network operators, business alliance customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!