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Buderus commercial and domestic boilers

[SB 735 1200kW]

Dimensions

Parameter Value
Length, L 3016mm
Length, LK 2733mm
Width, B 1372mm
Width for accesss 1170mm
Height max incl controls, HK 2063 + 40mm*
Net weight 2204kg
Base frame, BGR 1170mm
Base frame, LGR 2300mm
Flue gas connection, HAA 438 + 40DN*
Flue gas connection, Ø DAA (internal) 353mm
Combustion chamber, Length 2200mm
Combustion chamber, Ø 688mm
Burner door, Depth 210mm
Burner door, HBR 1512 + 40mm*
Boiler flow connection, Ø VK 125DN
Boiler flow connection, HVK 1889 + 40mm*
Boiler return connection, Ø RK1 125DN
Boiler return connection, HRK1 970 + 40mm*
Boiler return connection, Ø RK2 100DN
Boiler return connection, HRK2 1200 + 40mm*
Boiler return connection, A2 278mm
Safety outlet from the heat exchanger, Ø VSL 65DN
Safety outlet from the heat exchanger, HVSL 1778 + 40mm*
Safety outlet from the heat exchanger, A1 278mm
Condensate drain, Ø AKO 40DN
Condensate drain, HAKG 86 + 40mm*
Condensate drain,A3 264mm
Drain, Ø EL R 1½"
Drain,HEL 45mm

* 40mm for sound absorbing base

Technical Parameters

Parameter Value
Output 1200kW
Nominal heat output at 75/60 °C, Full load 1098kW
Nominal heat output at 75/60 °C, Part load 480kW
Nominal heat output at 40/30 °C, Full load 1200kW
Nominal heat output at 40/30 °C, Part load 494kW
Max working pressure 5.5bar
Max flow temperature 120°C
Water content 2530l
Pressure at flue outlet 50Pa
Flue gas resistance 6.4bar
Gas content 1410l
Type approval number D6-223-769
CE certification, product ID no. CE-0085 AU 0452
Efficiency (NCV) 109%
Flue gas temperature, at 40/30 °C Full Load 35°C
Flue gas temperature, at 40/30 °C Part load 30°C
Flue gas temperature, at 75/60 °C Full load 64°C
Flue gas temperature, at 75/60 °C Part load 40°C
Flue gas mass flow rate, at 40/30 °C Full load 0.489kg/s
Flue gas mass flow rate, at 40/30 °C Part load 0.186kg/s
Flue gas mass flow rate, at 75/60 °C Full load 0.487kg/s
Flue gas mass flow rate, at 75/60 °C Part load 0.195kg/s
CO2 content 10%
Rated heat input at 40/30 °C, Full load 1132.1kW
Rated heat input at 40/30 °C, Part load 339.6kW
Rated heat input at 75/60 °C, Full load 1132.1kW
Rated heat input at 75/60 °C, Part load 339.6kW

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