Medium boilers

Low temperature oil/gas fired boiler Vitoplex 200

The Vitoplex 200 low temperature three-pass boiler sets new benchmarks in the medium boiler range by its compact design and low weight. The compact Vitoplex 200 threepass boiler has not only become 30 % lighter than its predecessor but with up to 350 kW, it now fits through any standard doorway (80 cm). That makes handling much easier. The Vitoplex 200 is a genuine three-pass boiler with low combustion chamber loading and, therefore, clean combustion with particularly low nitrogen oxide emissions. The Therm-Control start-up system that is an integral part of all boilers no matter what their size, increases the operational reliability and extends the service life. Shunt pump and constant return temperature raising are a thing of the past.

Low temperature oil/gas fired boiler Vitoplex 300

The three-pass boiler Vitoplex 300, with its proven multi-layered convection heating surfaces, offers a particularly economical, clean and reliable operation. The integral start-up system Therm-Control makes a separate return temperature raising facility unnecessary. The multi-layered convection heating surfaces of the Vitoplex 300 comprise telescopically arranged steel pipes pressed into each other for ideal heat transfer. The internal tube with its swaged linear ribs provides a heating surface 2.5 times that of smooth pipes. The heat throughput is metered by the different intervals between the press points so that the back area of the triplex tubes, through which slightly less hot combustion gases circulate, transfers less heat to the boiler water. This way, the surface temperature remains above the dew point temperature, the formation of condensate is counteracted and corrosion damage is prevented.

Low temperature oil and gas fired cast iron boiler Vitorond 200

The Vitorond 200 modular cast iron design allows it to be easily and simply transported and assembled in most locations. Its three-pass hot gas path ensures clean combustion. The integral Eutectoplex heating surface offers economical consumption and high operational reliability. Eutectoplex heating surface for high operational reliability and a long service life. The homogeneous structure of the special eutectic cast iron provides an even thermal transfer and prevents stress fractures. Optimum combustion and low emissions through two-stage Vitoflame 100 pressure-jet oil/gas burner (up to 195 kW), tested with computer assistance at operating temperature and set up in the factory. Alternatively with matching, fully wired pressure-jet oil/gas burner for 230 and 1080 kW. Safe and economical heating system operation through the digital Vitotronic control system with communication capability. Tailored to every need, covering all known control strategies and applications Standardised LON BUS for full integration into building management systems. Remote monitoring via the internet using Vitocom and Vitodata. Optional integration into the Vitocontrol control panel.

Condensing Unit with MatriX radiant burner Vitocrossal 200

With the Vitocrossal 200, Viessmann offers high-grade condensing technology from 87 to 311 kW with an outstanding price/performance ratio. The Vitocrossal 200 comprises the components proven in Viessmann condensing technology: Consequently the proven Inox-Crossal heating surface was combined with another milestone of Viessmann heating technology: The MatriX radiant gas burner. The MatriX radiant burner is now also available across the entire output range up to 311 kW with a modulation range from 33 to 100 %. This ensures a quiet and environmentally responsible operation, even in this output range. The Vitocrossal 200 is suitable for open and balanced flue operation across its entire output spectrum. For output in excess of 311 kW, two Vitocrossal 200 can also be operated as cascade with the same provisions for control and the flue gas side. For twin-boiler systems, Viessmann offers specifically designed flue gas headers made from stainless steel as well as the hydraulic system connections.

Gas fired condensing boiler with MatriX radiant burner Vitocrossal 300

The Vitocrossal 300 is a top product amongst freestanding gas fired condensing boilers. It is designed to utilise the condensing energy in its hot gases with exceptional intensity. The Inox-Crossal heating surface in the Vitocrossal 300 was combined with another milestone of Viessmann heating technology: The MatriX radiant burner. This reduces heating costs and ensures minimised emissions without compromise. These are so low that the Vitocrossal 300 performs significantly better than required for the «Blue Angel» certificate of environmental excellence.

Gas condensing boiler Vitocrossal 300

The proven Vitocrossal 300 range (type CT3) has been extended by two additional sizes (187 and 314 kW). Up to 314 kW, the Vitocrossal 300 is available as Unit boiler with MatriX radiant burner. This enables Viessmann to offer the perfect solution for every demand — for apartment blocks, local heating networks and public or commercial buildings. The design of the Inox-Crossal heating surfaces allows the Vitocrossal condensing boilers to utilise the condensation energy in their hot gases with particular intensity. The second return connector of the Vitocrossal 300 enables a connection very beneficial to the utilisation of condensing technology. Combination with the MatriX radiant burner ensures optimum clean combustion without compromise, plus low energy consumption and quiet operation.

Gas fired condensing boiler Vitocrossal 300

With the Vitocrossal 300 type CR3 range of condensing boilers, Viessmann offers the perfect solution for apartment blocks, local heating networks or public and commercial buildings. The design incorporating the Inox-Crossal heating surfaces allows the Vitocrossal 300 condensing boilers to utilise the latent condensation energy in their hot gases with particular intensity. The second return connector enables a connection very favourable to the utilisation of condensing technology. This design with wide hot gas channels achieves an efficient heat transfer through the strong turbulence in the hot gases. For this reason Viessmann has integrated reversing areas and changes in the cross-section of the Inox-Crossal heating surface. The opposing inclined indentations create permanent changes in the cross-section. This continuously reverses the hot gas flow, creating a permanent turbulence. The condensate that has been created must be extracted in order to make the best use of the heat in the hot gases. The Inox-Crossal heating surface has been designed so that hot gases and condensate flow in the same direction, i.e. downwards. This creates a permanent self-cleaning effect that also prevents condensate concentrations.