with additional system flow sensor (optional) for improved plant efficiency.
provide ideal conditions for condensation and therefore increase energy recovery from the flue gases.
the modulating gas burner matches the output exactly to the requirement, reduces the switching frequency and guarantees clean, low-emission and
this patented Hoval innovation in vertical arrangement and the large water content for maximum heat transfer and more cost effectiveness.
makes ecological, economical, reliable and smart heating easier than ever before.
UltraGas® 2 D (250 - 3100)
Set consisting of two sophisticated gas condensing boilers and one shared flue gas line for heating and generating hot water, available with output ratings from 250 kW to 3100 kW. Floor-mounted, continuous power adjustment, with Hoval TopTronic® E system controller.
Range of applications: blocks of flats, commercial, office and industrial buildings, schools and sports facilities, hotels, district heating networks – for renovations and new buildings.
|Suitable for biomethane and, in future, also hydrogen|
|Compact transport and installation dimensions|
The new benchmark
Two complete boilers communicate with one another via their TopTronic® E controller and split the job of providing heat between themselves. Both boilers run in partial load operation – an excellent, economical operating state – whereas one boiler operating alone would have to go full throttle, thus increasing consumption and shortening service life. If a boiler should ever fail unexpectedly, the second would temporarily take over and provide heat until its sibling was ready to go once more. "
The innovative Hoval TurboFer® heat exchanger allows for operating temperatures of up to 95°C. It also has a specially developed heating surface that transfers heat even more effectively than other designs.
The separate high-temperature and low-temperature returns are another way to ensure cost-effective operation. This separation means the heating water is returned to the correct place in the boiler, thus producing optimum water-side temperature stratification inside it. Using the high-temperature and low-temperature returns makes the system more efficient.
A flow temperature sensor optimises operation of the heating system even further. This sensor records the precise flow temperature, enabling it to improve the control response. The through-flow is more constant and the return temperature is lower. The useful heat is utilised in the best way possible. This boiler’s increased efficiency and energy savings of up to 20% compared to a conventional gas boiler enable it to save the customer money. The investment is recovered in just a few years."