Carrier has launched a new line of K-Series WeatherMaker Applied rooftop units available with more environmentally sustainable R-454B refrigerant, known commercially as Puron Advance.
The K-series is available in 20-to-60 tonne nominal cooling capacities and features a robust indoor fan system and improved design for higher efficiency compared to legacy Carrier models.
The K-Series, which includes the 48K with gas heating and electric cooling and the 50K with electric cooling with optional electric or hydronic heat, has a commercial grade cabinet with fully hinged access panels, designed to fit most legacy Carrier curbs.
The K-Series has a high-capacity forward curve indoor fan with variable frequency drive control and available Staged Air Volume or Variable Air Volume configurations to meet a wide range of application requirements.
Other features include Carrier SmartVu controls with a 7-inch touchscreen display, a refrigerant leak detection system with dissipation control, and a variety of factory installed options, including an ultra-low leak economiser, modulating gas or electric heat, Humidi-MiZer dehumidification and double wall construction with available Agion anti-microbial coating.
“Carrier’s K-Series rooftop units are the latest in a long line of flexible, efficient and reliable solutions for commercial air conditioning and indoor air quality needs,” said Michael Jones, Product Manager, Applied Packaged Systems, Carrier. “We’re helping our customers prepare to meet regulatory requirements while also designing our products to be efficient and innovative, all while offering easy installation and compatibility with existing curbs.”
The adoption of Puron Advance surpasses the EPA’s lower GWP requirements for 2025 as R-454B has a GWP100 of 466. That’s a 75 per cent reduction from R-410A.