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Project feature not typically available in large VRF systems . The solution would need to be as innovative as the project itself .
LG ’ S INNOVATIVE HVAC SOLUTION : THE MULTI V5 SYSTEM To address these challenges , LG presented a comprehensive HVAC solution designed to operate entirely on solar power . The LG Multi V5 system was chosen for its superior energy efficiency and adaptability to renewable energy sources .
The developers considered the following winning factors of the LG Multi V5 system :
1 . Energy conservation and operating cost savings The LG Multi V5 is an integrated solution that combines advanced technologies to provide energy efficiency while improving operational costs . The system utilises LG ’ s Ultimate Inverter Compressor , which can operate at frequencies as low as 10Hz , allowing for significant energy savings . This efficiency is crucial for a facility relying entirely on solar power .
The system showed remarkable energy efficiency , with documented evidence of achieving 40 to 50 % energy savings compared to conventional constant compressor systems . This level of efficiency makes the solar-powered operation not just feasible , but highly effective .
Andries Bekker , Air Solutions Field Engineering Team Leader at LG Electronics South Africa , explained the company ’ s approach : “ Until now , only small residential units have been installed to operate on solar energy . However , for larger loads like VRF systems , there are specific capacities that can run on solar power , but they lack the intelligence to adjust operations based on realtime battery power . This makes our solution an industry first .”
Magnus Smit of MBS Engineers , the mechanical engineer on the project , emphasised the system ’ s sustainability benefits : “ By reducing energy consumption and optimising performance , the LG Multi V5 system helps lower operating costs and reduce the building ’ s carbon footprint . While the upfront investment might be higher , sustainable HVAC systems like this typically offer significant long-term savings through reduced energy bills , lower maintenance costs , and extended equipment lifespans .”
2 . Industry-first adaptive capacity control What sets this installation apart is its ability to dynamically adjust output based on available solar power — a feature previously unavailable for large-scale VRF systems . The system ’ s intelligent monitoring and adjustment capabilities ensure optimal performance even during periods of reduced sunlight .
The Smart Inverter system monitors the solar panels ’ charging capacity and sends information to the LG AC Smart 5 central controller system . This enables the LG system to operate the air conditioning system based on the solar charging capacity ,
The facility called for energy conservation — all while operating entirely off-grid .
The LG Multi V5 is an integrated solution that combines advanced technologies to provide energy efficiency while improving operational costs .
ensuring that the HVAC system never exceeds the capacity of the available power supply .
3 . Comprehensive product range and installation flexibility LG provided a diverse range of products to meet varied needs within the facility . The system included Multi V5 , 4-way cassettes , 1-way cassettes and AC Smart5 , allowing for optimal placement and performance across different areas of the office park and warehouse .
The system ’ s installation flexibility was notable , with the ability to support long piping runs of up to 110 metres from indoor to outdoor units . This made it ideal for the large warehouse space , allowing for efficient cooling across the entire facility without compromising on performance .
4 . Advanced remote monitoring and support To ensure optimal performance and rapid response to any issues , LG implemented a sophisticated remote monitoring system via BECON Cloud , which can provide real time operational reports , dashboards , history and status monitoring . The LG AC Smart 5 Central controller allows for remote login to check not just indoor settings but also monitor outdoor cycle information . This enables regular online checks to ensure that the system runs within the
www . refrigerationandaircon . co . za RACA Journal I January 2025 33