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Buderus commercial and domestic boilers

[SB 825L LN 5250kW]

Dimensions

Parameter Value
Length, L 6010mm
Length, LK 5000mm
Width, B 2250mm
Width, BWT1 1564mm
Width, BWT2 835mm
Height, HF 2550mm
Height, HK 2560mm
Height, HWT 970mm
Operating weight 6 bar 19.9t
Operating weight 10 bar 21.5t
Shipping weight 6 bar 11.8t
Shipping weight 10 bar 13.3t
Flue gas connection, HAA 1495mm
Flue gas heat exchanger, Ø AA 630DN
Combustion chamber, Length 4714mm
Combustion chamber, Ø 1177mm
Burner door, Depth 257mm
Burner door, HB 1275mm
Base frame, LGR 4480mm
Base frame, BGR 1520mm
Base frame, U-Profile 240mm
Boiler flow / return connection 150DN
Heat exchanger flow, HVWT 1781mm
Heat exchanger return, HRWT 1209mm
Drain, ELK 50DN
Drain, ELA ¾"DN
Flange VK/RK/VSL, ∆t = 15K 250DN
Flange VK/RK/VSL, ∆t = 20K 200DN
Flange VK/RK/VSL, ∆t = 30K 200DN
Flange VK/RK/VSL, ∆t = 40K 150DN
Distance, A1 3100mm
Distance, A2 1000mm
Distance, A3 1100mm
Distance, A4 500mm

Technical Parameters

Parameter Value
Max working pressure 6bar to 10bar
Flue gas temperature at 60 °C 124°C
Flue gas temperature at 30 °C 110°C
Max flow temperature 110°C
Water flow resistance 198mbar
Flow rate crossing the external heat exchanger 160mN3/h
Nominal output heat exchanger at 60 °C 170kW
Nominal output heat exchanger at 30 °C 442kW
Max nominal heat output boiler 5250kW
Water content 8.1m3
Flue gas resistance 11mbar
Gas content 9.6m3
CE certification, product ID no. CE-0085BO0397
Pressure at flue outlet 0 (50Pa) burner dependent
CO2 content, Gas 10.5%

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