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Buderus commercial and domestic boilers

[SB 615 310kW]

Dimensions

Parameter Value
Length, L (without burner) 1845mm
Length, LK 1774mm
Width, B 970mm
Width for access 790mm
Height max with controls, H 1638mm
Height side mounted controls, HK 1408mm
Weight 705kg
Length of burner, LBR 500mm
Flue gas connection, Ø DAA (internal) 203DN
Flue gas connection, HAA 305mm
Combustion chamber, Length 1460mm
Combustion chamber, Ø 453mm
Burner door, Depth 185mm
Burner door, HB 1017mm
Boiler flow connection, Ø VK 80DN
Boiler flow connection, HVK 1260mm
Boiler return connection, Ø RK1 80DN
Boiler return connection, HRK1 142mm
Boiler return connection, A1 300mm
Boiler return connection, Ø RK2 R1½DN
Boiler return connection, HRK2 512mm
Boiler return connection, A2 310mm
Safety outlet from the heat exchanger, Ø VSL 32DN
Safety outlet from the heat exchanger, HVSL 1213mm
Safety outlet from the heat exchanger, A3 170mm
Condensate drain, HAKG 164mm
Condensate drain, A4 120mm
Drain, HEL 82mm
Base frame, BGR 790mm
Base frame, A 285mm

Technical Parameters

Parameter Value
Output 310kW
Nominal heat output at 75/60 °C, Full load 282.8kW
Nominal heat output at 75/60 °C, Part load 123.1kW
Nominal heat output at 40/30 °C, Full load 310kW
Nominal heat output at 40/30 °C, Part load 126.3kW
Max working pressure 5bar
Max flow temperature 120°C
Rated heat input 116kW - 289.9kW
Water content 645l
Pressure at flue outlet 50Pa
Flue gas resistance 2.4mbar
Gas content 376
Type approval number 06-223-706
CE certification, product ID no. CE-0085 AT 0075
Efficiency (NCV) 109%
Flue gas temperature, at 40/30 °C Full Load 46°C
Flue gas temperature, at 40/30 °C Part load 34°C
Flue gas temperature, at 75/60 °C Full load 71°C
Flue gas temperature, at 75/60 °C Part load 44°C
Flue gas mass flow rate, at 40/30 °C Full load 0.12kg/s
Flue gas mass flow rate, at 40/30 °C Part load 0.0465kg/s
Flue gas mass flow rate, at 75/60 °C Full load 0.1235kg/s
Flue gas mass flow rate, at 75/60 °C Part load 0.0494kg/s
CO2 content 10%

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