This twin coil unvented solar cylinder manufactured from stainless steel is designed for use with a boiler to provide auxiliary hot water during periods of low solar gain.
Delivered with a 3kW back-up immersion heater as standard, it comes in three sizes of 200, 250 and 300 litre volumes and has a 25 year warranty on the cylinder shell.
Each cylinder features two sensor pockets for simple straightforward connection of the control sensors and a 22kW rated auxiliary coil for a rapid heat up. Insulation exceeds CHeSS best practice and heat loss is as low as 0.08kW/h.
Compact and stylish the cylinders are easy to install. auroSTOR complies with G3 Building Regulations and is WRAS and KIWA approved for use within solar systems. The Vaillant Total Solar System Solution package also has WRAS approval which allows the heating system to be controlled by the Vaillant VRC weather compensator to optimise heating efficiency.