Heating, cooling and DHW solution Mitsubishi Electric hybrid multi-split PXZ

Many modern Irish homes now experience overheating during certain times of the year and cooling homes is now a major issue for some. Mitsubishi Electric devised a solution to this issue, the PXZ Multisplit. This solution provides heating and cooling as well as DHW.

This new series of hybrid air to air, air to water heat pumps combines the advantages of a hydronic heat pump and the benefits of a multi-split system. Applications include newbuild and retrofit, be it individual houses or apartments.

The fully electric “hybrid” models are capable of combining the typical comfort of water-based solutions, with maximum energy efficiency and the reduced consumption of air conditioning, in a single machine.

Compatible with multiple indoor units – be they floor mounted, wall mounted or ducted – they are available in capacities ranging from 1.5kW to 7.1kW (cooling capacity). Maximum individual unit pipe run is 30m with the maximum total pipe run being 60m.

The new series models are available in two sizes – the 7.5 kW PXZ-4F75VG model which allows for connection to up to four Mitsubishi Electric indoor units (one hydronic plus three direct expansion), and the 8.5 kW PXZ-5F85VG model which allows for a maximum of five indoor units (one hydronic plus four direct expansion).

A key advantage is that householders need to purchase just a single outdoor unit as PXZ is connectable to both RAC and Ecodan. Then when it comes to future home extensions or further refurbishment, additional units can be easily installed and incorporated into the main system.

Comfort, silence and functionality are guaranteed down to -20 °C and the water delivery temperature up to 55°C allows adaptation to any system configuration.

The system can be controlled both locally and remotely via the MelCloud platform. By using a mobile device (smartphone, tablet, etc) users can easily adjust the temperature in each individual room, control the domestic hot water and monitor the energy consumption. Controls cover both single and multi-zone heating systems, heating controls for both underfloor heating and radiators, and autoadaptive control.

Ease of installation is another key benefit. Flexible options include using an integrated cylinder or hydrobox; using integrated cylinder for hot water; utilising an existing cylinder in retrofit installations (depending on individual cylinder or coil size); and using hydrobox for heating, or heating and cooling only, applications.

Features and benefits

•Utilises R32 refrigerant with low GWP – 675;

•Small gas charge of 2.4kg;

•Provides for heating, cooling and DHW with a single outdoor unit;

•Sound level under 50 dB(A) in cooling mode (SPL);

•Compact chassis making it perfect for apartments and small homes;

•Compatible with multiple indoor unit types;

•In-built scale trap and strainer;

•Heat exchanger for faster DHW;

•SD card and energy monitoring as standard;

•In-built heating expansion vessel;

•Three cylinder volumes – 170lt, 200lt and 300lt.

Contact: Mitsubishi Electric.

T: 01 419 8800; E: sales.info@meir.mee; w: mitsubishielectric.ie