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Air-con tech centrally controls hundreds of indoor units in large buildings

Large buildings can now be supplied with heating and cooling plants that occupy minimum space, while offering the best possible efficiency, due to latest technology from Toshiba air conditioning.

Philip Theunissen, Brand Manager, Toshiba explains that the Toshiba super heat recovery multi, represents the latest iteration of Variable Refrigerant Flow (VRF) technology.

“It can feed multiple indoor units from modular outdoor units, situated usually on building roofs or in strategically-located plant rooms. Up to 528 indoor units can be controlled centrally by building or by facility managers, in conjunction with the relevant Building Management System (BMS)”

The system uses intelligent flow technology based on independent Pulse Motor Valves (PMVs), to control the flow of refrigerant to each indoor unit. These deliver a carefully-calibrated refrigerant flow to each indoor unit to create, and then maintain, optimum comfort conditions, utilising three sensors per indoor unit.

According to the company, the Toshiba SHRM_e technology sets a new benchmark in energy efficiency and performance, as all outdoor units exceed 7 ESEER (European seasonally adjusted energy efficiency rating).

By using Toshiba’s Wave Tool Technology (WTT) a wireless commissioning and performance validation tool, engineers are able to read and write data to and from the condensing unit using a smartphone, without making physical contact. It enables testing and commissioning to be carried out without taking the covers off the unit. A first for the industry.

By using Near Field Communication (NFC) technology to transmit data between the outdoor unit and the engineer’s smartphone, the tool allows service and commissioning engineers to instruct and obtain key system information simply by touching their smartphone onto the NFC tag on the outdoor unit.

The technology aims to simplify commissioning, as well as reducing the time spent on-site, giving the service engineer the ability to quickly and easily send key system data via e-mail back to the office for analysis.

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