The range, first announced at last year’s Chillventa, features Bitzer’s Ecoline reciprocating compressor with in-built capacity control. They employ EC fans to bring then within the requirements of the EU’s 2015 Ecodesign Directive.
The LHE condensing units are designed for a wide range of applications including air conditioning, medium temperature and low temperature refrigeration applications. They are said to offer highly efficient and flexible performance and are available with displacements of 4 to 110.5 m³/h.
As modular units, they can be supplied in different configurations, including both single and tandem compressors. Refrigerant compatibility includes R134a, R404A/R507A, R407A, R407C, R407F and R22 as well as low GWP HFO refrigerants and HFO/HFC mixes.
The new EC fans use less power than the AC versions used in previous generation LHE units. The airflow has also been optimised to reduce operational sound levels. Speed can be adjusted using conventional regulators.
Further LHE design innovations include a mini-channel heat exchanger that increases the capacity of the condensing unit without increasing its overall footprint. Thanks to the use of 5mm pipe technology, the volume and weight of the unit is also reduced.
Of copper and aluminium construction, the heat exchangers are already weather-resistant but the weatherproof housing offers further protection.
Importantly, the LHE units have the same connection sizes as the previous series LHE units, making retrofits very straightforward for the contractor. Thanks to identical interfaces, the mini-channel heat exchanger can also be simply replaced if needed.