The R32 City Multi YNW range is available in both heat recovery and heat pump guise. The manufacturer says that, for the first time in the UK, this will allow customers to use a single lower GWP refrigerant across an entire building or network.
The new systems, described by deputy divisional manager John Kellett at the London launch as “the next generation of VRF’’ will join the R32 hybrid option introduced last year. Mitsubishi Electric will continue to offer its existing VRF products, using R410A, but points out that the R32 units are cheaper in both heat pump and heat recovery modes.
The units are available in sizes from 22-34kW as Mitsubishi Electric aims to drive the range towards applications including open-plan office spaces and large retail areas. Manufactured in Japan, they can be specified from October and will be shipped from January 2020.
Mark Grayston, head of Mitsubishi Electric's product marketing department, said: “Under the growing pressure of the F-Gas phase down regulations, the market is demanding viable and positive solutions which are future proof for businesses and last the full lifecycle of the product.’’
At a customer conference to unveil the new products, partners were asked what the key factors in the adoption of R32 VRF were and the top three responses were: 1) cost; 2) proven VRF concept; and 3) end user CSR.
“Customers need products that meet both current and future legislation and with the launch of the UK’s first R32 VRF systems, we are delighted to be able to offer the market a complete range of lower GWP solutions,’’ added Grayston.
Mitsubishi Electric also announced a warranty extension for its top partners and will now offer 10-year warranties on all air conditioning equipment installed by it Diamond Quality Partners (DPQs).
Grayston said: “With R32 comes an increased need for quality in both application and installation. Our DPQs are proven to meet the highest standards of installation, including subjecting themselves to an annual independent audit of their work, so we wanted to support their equipment with this extended warranty.’’
R32 has become increasingly popular in split-type air conditioning systems, offering a lower GWP (675) than R410A (2088). Whilst the manufacturer's Hybrid VRF has provided a R32 solution for larger systems, no standard VRF range using R32 has been available until now.
Utilising the City Multi YNW outdoor unit, with a number of new components, including compressor, Mitsubishi Electric says its R32 solution offers design flexibility, high efficiency and low noise.
R32 makes up 50% of the existing R410A refrigerant already found in many current VRF systems, is highly energy efficient and is easy to recycle. A GWP of one third of R410A, plus reduced overall system refrigerant volumes, means lower refrigerant total and lower global warming impact.
With a range of ducted and 4-way blow ceiling cassette indoor units available, the manufacturer says systems provide flexibility of installation for R32 VRF in many applications. They are also said to work with a range of advanced controllers to ensure effective and efficient operation.
Grayston added: “This new range enables us to offer a complete choice for any building and any customer. Whether CSR is high on the agenda for customers, or whether lifecycle cost or capital cost are more important, there is now a complete R32 choice available from Mitsubishi Electric.”