Using innovative and dynamic design concepts Oso are proud to introduce the next generation of unvented cylinders. All pipes and electric cables are hidden from view giving the neatest possible installation. Reduced heat losses from the Super S are achieved by the use of 100% recyclable Super Eco foam insulation and also incorporating all valves and pipes beneath the insulated removable top.
 
Manufactured from Duplex stainless steel and offered with a 25 year guarantee, the Oso Super S is designed to minimise fitting time, optimise installation appearance and provide ground-breaking performance.
 
Unique design: Traditional unvented cylinders lose a substantial amount of heat from the uninsulated valves attached to the side of the cylinder. All Super S pipe connections and valves are on the top of the cylinder covered by and insulated lid. A bespoke multifunction valve, accepting all the secondary pipes, safety valves and a unique blending valve, is concealed under the lid with the primary flow and return connections.
 
All heating and potable water pipes connect to the Super S from the rear, allowing pipes to be concealed from view to give the neatest possible installation. The installer fits the pipes to the back wall together according to a supplied template and finally slides the cylinder into place to marry the valve connections with the pre-cut pipe tails.
 
Employing innovative design techniques the Super S cylinder is a significant departure from the increasing number of stereotyped unvented cylinders available in the UK. The Oso design team started with a blank sheet and a remit to produce "the perfect unvented cylinder in the eyes of the installer and the householder". The challenge was to harmonise the Super S design with building regulations and best installation practice
 
Electrical cables are concealed in channels behind the casing and underneath the cylinder, ensuring they are out of sight to enhance the neat appearance of the unit. With pipes and cables out of sight, the physical appearance is optimised and the area occupied by the water heater kept to a minimum.
 
Superior performance: The Super S sets a new standard in heating performance with 26kw heating coils in indirect units from 150 litres offering reheat times well below 20 minutes.
 
Direct units are set to heat to 70°C, with water then blended to 60°C when drawn off. This extra energy stored in the direct cylinders allows units to be downsized enabling further space savings and cost benefits.
 
A separate expansion vessel together with wall fixing bracket and 1m flexible hose is supplied for on site fitting.
 
Independent approval: The OSO Super S is available in direct and indirect heating formats and with capacities from of 120 to 300 litres and carries approval by KIWA & WRAS. All the units are 570mm diameter.  
 
Eco-friendly production: The Super S is manufactured using laser welding technology, which requires no filler rod. The welds are created in an oxygen free atmosphere, thus eliminating the need for cleaning of corrosive oxides on the weld, typically done by acid washing in competitor factories, with consequential environmental damage. Oso laser welding eliminates these harmful discharges from our factory. Cylinders are insulated using polyurethane foam to minimise heat losses. The foam is created using water as blowing agent to minimise harmful emissions and give a zero Ozone Depletion Potential.