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Sirius Three FS cascade pipework kits support up to four boilers with a maximum output of 1mW. This system distributes heat demand evenly, enhancing efficiency and consistent warmth. It adjusts seamlessly to changing heating needs. Each boiler operates with a modulation ratio of up to 9:1, enhancing energy efficiency and reducing wear. The system includes versatile cascade kits and is suitable for various boiler outputs. The energy-efficient design prolongs boiler lifespan. Models are available for 50kW and 70kW capacities. The product's smooth operation ensures optimal performance and energy savings. Image for illustration only.. Potterton Commercial Cascade Pipework System for 50kW & 70kW Models - 4 Boiler Cascade Header 5142772