Condensing boilers ≤ 35 kW indoor City Class 25 KR no ERP

City Class 25 KR no ERP

Heating and DHW with external storage tank and premix burner

Condensing stainless steel heat exchanger with extra wide water passages
RANGE RATED Certified
5 Nox Class in accordance with UNI EN483
I.C.S (Intelligent Combustion System) I.C.S. guarantees a perfect combustion in all conditions.
Possibility to work with all types of gas (smart adaptive gas function) without replacing the nozzles
Ratio 1:10
Brass Hydraulic group with DIN connections

W x H x D: 400 x 700 x 300 mm
Weight: 26,5 kg
Qn: 20kW
η30 at Qn* 106,4%

Qn = nominal heat input in heating • Qnw = Nominal heat input in DHW • η30 = useful efficiency at 30% of the heat input

* The appliance is factory-set for Natural Gas G20 and can be set up to operate with commercial Propane G31 without replacement of internal components

* With boiler working in condensation return 30 °C