Wall-hung condensing premix boiler with instantaneous production of hot water, sealed chamber
Main Characteristics:
Efficiency class (92/42/EEC directive)
Class 5 NOx;
Thermopolymer-covered stainless steel heat exchanger;
24 and 28 kW Output;
Modulation range 1:9
Modulating gas valve with constant air-to-gas ratio;
Adjustable maximum heating output;
Room temperature can be set from the boiler if an external probe is installed;
Fully pre-mixed burner;
3-speed pump with integrated air purging device;
9 l heating expansion vessel;
12-plate DHW heat exchanger (24 kW);
14-plate DHW heat exchanger (28 kW);
Variable-speed combustion fan;
Microprocessor control board;
LCD control panel with self-diagnosis function;
Multifunctional relay for connection to systems with zone valves or to solar systems or to remote boiler shutdown alarms;
Hydraulic kit for solar integration available (optional).