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Mitsubishi Electric

Mitsubishi Electric has added R32 Standard Inverter and Inverter models to its Mr Slim air conditioning range. The Mr Slim range is suitable to cool or heat a huge variety of applications, including offi ces and retail units. The new models deliver increased effi ciencies in eight diff erent capacities from 2.5-14kW. The Standard Inverter outdoor units are available from 2.5-14kW and include extended pipe runs on larger models compared to the previous R410A versions, increasing fl exibility. The outdoor unit can connect to a range of indoor units including ceiling cassette, ceiling concealed, ceiling suspended and wall mounted models. The Inverter outdoor units are available from 7.1-14kW as ceiling cassette systems and off er a cost eff ective alternative alongside all the benefi ts of Mitsubishi Electric Mr Slim technology. Both Standard Inverter and Inverter outdoor units are quiet, lightweight and compact. The units incorporate Replace Technology, allowing installers to move to the new systems while maintaining existing pipework.

Dunham- Bush


Trane is introducing City, three chiller and heat pump products below 400kW for effi ciently heating and cooling small commercial buildings, industrial facilities and industrial processes.

The compact products are 38% more effi cient at part-load than the 2021 Ecodesign requirements, and designed to use near zero GWP non- fl ammable refrigerant, R1234ze. They use renewable energy, geothermal sourced water and waste water to deliver heating capacity up to 80°C. Trane City Comfort is a chiller for offi ce buildings, hospitality, district cooling and heating and data centers, and can be used in small industrial processes and in small agricultural production facilities such as wineries.

Trane City Process is a process chiller variant of this portfolio that provides highly effi cient process cooling for food and beverage, warehouses, cold storage and ice rinks, and can freeze down to -12°C. The Trane City Booster is a water-to-water heat pump delivering hot water at temperatures of between 50-80°C, designed for applications such as high temperature heating, sanitary hot water supplies, district heating and heat recovery cascades.

Trane City Booster sources energy from waste water or geothermal systems at 5-30°C.

With a range of 30 models and a cooling capacity from 35-633kW, the Zeus series of chillers from Dunham-Bush incorporates highly effi cient and robust V-confi guration condenser coils, which deliver uniform air distribution and a compact footprint for plant rooms and roof top installations where space is at a premium.

Using R410A refrigerant, Zeus chillers can operate in ambient temperatures ranging from -10 to 46°C. With a choice of vertical, tandem or trio scroll compressor set-ups, all models have a lead- lag confi guration, which closely monitors output water temperature and modulates compressor load as demand changes, maximising effi ciency. Solid state motor protection modules with PTC sensors embedded within the motor winding monitor the compressor temperature, protecting the motor from overheating if overload, low refrigerant fl ow or incorrect motor rotation issues occur. Crankcase heaters are fi tted as standard to minimise oil dilution and liquid refrigerant migration.

Casings are constructed from heavy gauge galvanised steel, with a powder coat baked fi nish to ensure excellent corrosion resistance. For outdoor applications, casings are in accordance with AST-B-117. Zeus air cooled scroll chillers feature an energy effi cient design, ease of installation, control fl exibility and microprocessor controls. They are delivered to site fully assembled, charged and tested.

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