The Vitodens 111-W comes with a cylinder loading system (CLS) and 46 litre integrated stainless steel storage tank with delivery of 18 L/min. This means that a standard 140 litre bath can be filled in as little as 8 minutes. The Vitodens 111-W wall mounted gas condensing boilers are controlled by the new, backlit LCD touchscreen, which makes it easy to use and read in dark environments.

Stainless Steel Heat Exchanger

As is the case with all Viessmann gas condensing boilers, the Vitodens 111-W is equipped with a stainless steel Inox-Radial heat exchanger. This technology brings with it an extremely high efficiency rate of 98 percent and exceptionally reliable and efficient operation during its long service life. Viessmann guarantees the Inox-Radial heat exchanger for ten years against leaks resulting from corrosion. Cylinder Loading System (CLS) Most unvented cylinders use a heating coil to heat up the cylinder. The CLS technology replaces the coil with a plate heat exchanger. A DHW pump circulates the cold water from the bottom of the cylinder, through the plate heat exchanger and puts the hot water back to the top of the cylinder.