Rinnai HDC1200i Conversion Kit - LPG The Rinnai HDC1200i Conversion Kit - LPG. This is the genuine article - a kit that's specifically designed by Rinnai to work flawlessly with their HDC1200i continuous flow water heater. Its been engineered to get the fuel configuration right, ensuring your water heater runs safely, accurately & with top efficiency. This kit - like all genuine Rinnai parts - has been built to the manufacturer's super-high quality standards. Whether you need to replace worn out bits or change the fuel type, using genuine components is the only way to ensure safe combustion, reliable performance and a long appliance lifespan. ⚠️ Important: Don't even think about trying to DIY - this requires the skills and know-how of a qualified / Gas Safe engineer. Before you start