The Rinnai Infinity 28i LPG Internal Continuous Flow 50-degree Hot Water System is a high-efficiency solution for 1-2 bathroom homes. With a 6-star energy rating, this system ensures low running costs and reduced greenhouse emissions. It is compatible with 7 to 9 Ltr/min taps, providing a constant supply of hot water. To control the water temperature, you have the option of using the Universal Controller MC601QA or the Deluxe Controllers, which include the Main Deluxe MC1001S and the Bathroom Deluxe BC100V1S. If running cables is not feasible, the remote system is an alternative, which requires the Starter Kit that includes the outdoor remote sensor and one wireless remote. Additional wireless remotes, such as the WWC503, can be purchased separately. The system requires a 10amp outside waterproof PowerPoint for electrical connection. Connection sizes needed are 20mm for gas, hot water, and cold water. Please note that the ducting pipe for this system must be quoted and supplied by your plumber, along with all gas piping. The Rinnai Infinity 28i LPG Internal Continuous Flow 50-degree Hot Water System provides a modern and efficient solution for your hot water needs.