﻿MHIE goes bigger in VRF
MHIE (Mitsubishi Heavy Industries Europe) has announced a major expansion to its KX6 VRF range of air-conditioning systems following the success of its KX6 Compact range. The eight ‘full-size’ KX6 heat-pump models offer cooling capacities from 33 to 68 kW and can be paired to provide up to 136 kW. There is also a new range of indoor units. with size reductions or detail improvements to almost every model.
The KX6 range achieves Class A ratings for energy efficiency, with COPs of up to 4.33. New compressors, heat exchangers and inverter control all contribute to the greater efficiency. There is also a redesigned 3-blade fan.
The lengths of permissible pipe runs have been increased from 510 to 1000, and the piping length after the first branch more than doubled to 90 m. The maximum height difference between indoor units is up from 15 to 18 m. Maximum vertical separation of outdoor and indoor units is 50 m, and the length of electrical wiring has been increased by 50% to 1500 m.
The KX6 range permits at least 130% connectability, with some configurations of indoor units supporting up to 200%. There are 15 types of indoor units in a variety of capacities, with 77 models in total.