City Class 20 FR 
Forced Draught
Heating
External storage tank
CH only and DHW production chance with external storage tank
- Expansion vessel cap. 8 Lt
- Copper main exchanger
- Electric three-way valve
- Brass hydraulic group
- ITS (Intelligent Temperature System)
- High quality circulation pump
- W x H x D: 400 x 700 x 324 mm
- Weight: 27.5 kg
- Qn/Qmin: 21/9.5 kW
- Qnw: 21 kW
- η30 at Qn: 90.5 %
Qn = Nominal heat input in CH • Qnw = Nominal heat input in DHW • η30 = Useful efficiency at 30% of the heat input
