THERM 120 KD.A boilers are designed for heating of buildings with high requirements for heat supply. The continuously modulating output in the range of 25.7 - 120.0 kW with high efficiency of the combustion and condensation process brings maximum gas savings. The CLASSIC Condens series represents the available performance and proven features. The heating of buildings with higher heat loss can be advantageously provided by means of the so-called boiler cascade. A three-way valve can be fitted under the boiler, which allows the heating of water in an indirectly heated storage tank.

A great advantage of the THERM 120 KD.A boilers is the possibility of connection to cascade boiler rooms for domestic boiler rooms or other industrial and residential buildings. This way you can achieve a very economical and ecological solution for heating and hot water in larger buildings. This intelligent system of condensing cascade boilers is, among other things, adapted for older residential construction, e.g. prefabricated houses, where its proven qualities make it one of the most effective revitalisations.


Recommended retail price: on request

eu_flagThe product THERM 120 KD.A complies all legislative, safety, healthy and environmental requirements of the European Union and CE mark enables the free movement of products within the market of the European Economic Area.

Emission category NOx 6 View the ErP label
  • High efficiency by using the principle of water steam condensing from burnt gases
  • Energy saving pump - up to 50 % electricity savings
  • Stainless condensing body
  • Can be regulated according to the spatial or outdoor temperature (equitherm regulation)
  • Fluent boiler output regulation
  • Can be connected into ‘cascade boiler’ rooms to increase heating power
  • As standard the boilers have white cladding
Technical data Unit THERM 120 KD.A
Class of seasonal energy efficiency of heating - A
Nominal thermal input power kW 115.0
Min. – max. thermal output for heating kW 25.7 - 120.0
Fuel - natural gas
Gas consumption - natural gas m3/h 2.45 - 12.03
Min. – max. overpressure of heating system bar 0.8 - 4.0
Maximum input pressure of heating water °C 80
Boiler efficiency % 97 - 106
Volume of expansion unit l -
Nominal supply voltage / frequency V/Hz 230/50~
Auxiliary electricity at rated heat input W 355
Level of coverage of electrical part - IP x1D
Diameter of smoke flue mm 110/160
Dimensions: height / width / depth mm 970 / 530 / 500
Weight of boiler kg 85
Order number - 10127
Cascade regulator THERM TKR

Cascade regulator THERM TKR

Category: Cascade regulator
Usage: Cascade boiler room
Impurity separator with magnet and filter

Impurity separator with magnet and filter

Category: Filters and impurity separators
Connection: 3/4", 1"
Order No.: 43684, 43685