The boilers of the SPO series, are ideal for the production of domestic hot water and for installation in places where there are problems of heights. They are equipped with a heat fixed exchanger for connection to solar systems. The boiler is made of carbon steel lined internally with porcelain enamel at 860° C, in accordance with regulations DIN 4753. Inside, it is mounted magnesium anode, proportional to the surface to be protected, ensuring, in this way, one excellent protection against corrosion. To ensure good thermal insulation of the boiler, it is made a rigid insulation with CFC-free polyurethane foam with PVC exterior finishing.