The SUPER COIL � S2C Indirect stainless steel unvented Hot Water Cylinder is designed for connection to a gas boiler. It has a unique patented design making installation quick and efficient and is the most space efficient cylinder available. In conjunction with a System boiler the SUPER COIL becomes a part pre-plumbed cylinder.�S2C has a�25 year�warranty. It incorporates concealed wiring, and a unique design with the blending valve, temperature & pressure relief valve and expansion vessels, motorised valve and all pipework hidden under a lid. All of the connections are on top of the cylinder making the S2C cylinder fast and easy to install. When tested in real life conditions, more S2C cylinders were installed in the same time as some competitors� products due to the unique design. S2C cylinders also has a smooth limescale resistant heating coil ensuring efficient heat transfer. �The S2C comes as standard with an ultra grade INCOTEC immersion heater as backup which can be connected to Solar panels with appropriate connection interface.�The S2C is factory fitted with a flow through expansion valve with minimum pipework to the vessels in accordance with the S2C building and water regulations approval.