Wall-mounted condensing boiler NCB-700 35K

The main advantage of condensing boilers is the low level of gas consumption. In addition, NAVIEN boilers are of high quality and have a long service life. The maximum efficiency of boilers is achieved at a temperature in the heating system up to 60 degrees Celsius. In this mode, condensate is formed inside the boiler, heat is most effectively taken from the primary main heat exchanger and "returned" back to the coolant. As a result, the exhaust gas temperature is very low, which even allows the use of special plastic chimneys. However, in order to avoid emergency situations in Uzbekistan, it is necessary to use a metal chimney. In addition, inspection organizations require the installation of a non-combustible metal chimney, regardless of the type of boilers. description: · High efficiency (up to 107%) · Low noise · Separate regulation of hot water and heating · Touch screen with backlight · Self-diagnosis and accident log · Frost protection · Full performance at gas pressure up to 8.7 mbar technical specifications: Heat-heating capacity (50/30 C): 38.4 kW. Heat-heating capacity (60/50 C): 35 kW. Thermal efficiency at full load (50/30 S): 107.7 % Thermal efficiency at full load (80/60 S): 97 % DHW capacity: 14-22 l/min Working pressure in the DHW system: 1-10 Bar Maximum pressure in the heating system: 3 Bar Expansion tank capacity: 8 L Temperature range in the heating system: 40-90 C. Temperature range in the DHW system: 30-65 C. Maximum electricity consumption: 145 watts Diameter of the chimney/air intake: 60/100 Mm Dimensions (W x D x H): 440 x 280 x 695 mm. Min/Max. exhaust gas temperature: 30-80 C. Weight: 40 Kg