Gas condensing boiler set, floor-standing, stainless steel

Gas condensing boiler set, floor-standing, stainless steel, consisting of 2 boilers in cascade, each being a floor-standing condensing boiler with stainless steel body and gas natural and propane pre-mix burner with electronic ignition, useful power (80/60°C) 45 kW, useful power (50/30°C) 48.6 kW, useful efficiency (80/60°C) 97.4%, useful efficiency (50/30°C) 105%, useful efficiency (50/30°C) at 30% load 108.4%, weight 60 kg, NOx emission class 6, regulation with outlets for 3 direct heating circuits and A.C.S., entries for temperature sensors, alarm signal, anti-legionella function, three time programs, possibility of remote control from a smartphone, tablet or PC with internet browser and control of up to 15 boilers in cascade, and external temperature sensor. Including safety valve, purgers, and drain to sump for emptying the boiler and draining the safety valve, without including the exhaust pipe for the combustion products. Fully assembled, connected and tested.