Trane Air Conditioning Co., Ltd. has launched a new air-cooled heat pump unit, the RTXA+, in response to growing market demand. This advanced model features an innovative heat transfer design that significantly improves performance compared to previous versions. The RTXA+ offers higher energy efficiency, greater reliability, a more compact structure, and reduced space requirements for heat dissipation.
Under standard national conditions, the RTXA+ achieves a COP of up to 3.0, ensuring efficient operation even in extreme temperatures—ranging from ambient temperatures above 40°C during cooling to below -10°C in heating mode. The unit also incorporates advanced noise reduction technology and a stable, energy-efficient defrosting process. It is equipped with the CH530 controller, featuring a Chinese touch screen interface, along with adaptive and feedforward control functions, remote operation capabilities, and group control support. The system can directly communicate with third-party control systems using the LonTalk protocol, enhancing integration and flexibility.
**High Reliability**
The RTXA+ is powered by a twin-screw compressor with fewer moving parts and utilizes 5-stage aerospace-grade bearings for enhanced durability. The direct-drive low-speed motor ensures long-term performance, while its suction cooling design extends motor life. The unit is resistant to liquid slugging, and the electronic expansion valve adjusts refrigerant flow with adaptive control logic, ensuring stable operation under varying load and pressure conditions.
**High Efficiency and Energy Saving**
The CHHN screw compressor is manufactured using precision machining tools, resulting in tight clearances and high operational efficiency. Its stepless slide valve adjustment increases partial load efficiency by 15–35% compared to traditional stepwise adjustment. The dual-circuit design further enhances efficiency at part load, and the electronic expansion valve optimizes refrigerant flow, contributing to high partial load performance. The W-type air-cooled condenser design boosts heat exchange efficiency, making the unit more energy-efficient overall.
**Advanced Control System**
The CH530 controller provides a user-friendly Chinese touch screen interface, offering features such as feedforward control for more stable cold water outlet temperatures and adaptive control for reliable operation. The unit supports communication with Tracer Summit or third-party systems via LonTalk protocol. It also includes remote operation functions, allowing users to start/stop the unit, switch between heating and cooling modes, and adjust water temperature settings. A wide range of parameters and fault diagnostics make maintenance easier and more efficient.
**Easy Installation**
The RTXA+ is designed as an integrated unit, making it flexible and simple to install. It can be placed directly on a rooftop or outdoor area, eliminating the need for a dedicated machine room and saving valuable installation space. The unit comes fully charged with refrigerant and lubricating oil from the factory, requiring only the connection of cold water piping and power wiring during field installation. This streamlined approach reduces time and labor costs, making the RTXA+ a practical and efficient solution for modern HVAC applications.
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