AAON sets the standard for commercial packaged rooftop units in performance, serviceability, and long-term value. The world's best RTU. Built just for you. Widely considered the industry's gold standard for performance, AAON packaged rooftop units …

YORK® Commercial Packaged Rooftop Units offer low operating costs, easy installation and Smart Equipment controls for advanced, high-efficiency comfort.

2022年1月11日 · DX, or direct expansion, HVAC units use a condensed refrigerant to cool air. The unit cools air by passing the condensed refrigerant through a heat exchanger inside the building to be cooled. In this part of the unit, called the evaporator, the refrigerant expands as it absorbs heat, eventually converting to a gas.

Our flexible outdoor packaged Rooftop HVAC Units are easy to customize with fast installation, low operating costs, and our Smart Equipment Controls package.

Improvement of evaporator refrigerant / two-phase heat transfer. Increased suction density improves compressor volumetric efficiency. Variable sensible heat ratio optimizes airside performance. Releases constraints on operating parameters. The optimizing controller tuned the RTU’s operation according to varying conditions as expected.

Units are available with electro-mechanical controls or RTU Open multi-protocol direct digital controller. Additional ComfortLink integrated controller on 3-5 ton models that provides: Scrolling marquee display; Reverse rotation protection; Service diagnostics and alarms; Alarm and run time history; Additional dehumidification fan speed control

Mammoth is a manufacturer of Ultraline™ high-capacity custom DX rooftop units. Factory-packaged with factory controls, Mammoth RTU’s combine tried and true equipment layouts with custom capability.

• Chilled water or non-compressorized DX air handling units, from 7,500 - 80,000 cfm • R-410A variable speed scroll compressors • Double wall rigid polyurethane foam insulated cabinet construction • Walk-in compressor and control service vestibule • Unit access doors with full length hinges and lockable handles

Our comprehensive collection of resources cover Commercial Packaged & Split DX Applications, Technology & Warranties, and Sustainability - all designed to help you stay informed and up- to-date. With our expert advice and thorough research, you can trust us to provide the best possible guidance to obtain Professional Development Hours (PDH ...

5 天之前 · 文章浏览阅读367次，点赞3次，收藏5次。dx-rtu-1 遥测终端机作为其中的优秀代表，以其多种通信方式支持、高性能工业级硬件、丰富的采集控制接口、低功耗设计以及广泛的应用领域，满足了生态环境监测和污染源监控的多样化需求。dx-rtu-1 广泛应用于各种生态环境监测信息化及江河湖海水库水污染 ...