Logano plus SB315, SB615, SB745 - Buderus

Technical description33.2.4 Specification for the Logano plus SB315 and SB315 VM floor standing condensing boilersBoiler size Unit 50 70 90 115Rated heating output gas(at system temperature50/30 °C)Rated heating output oil(at system temperature50/30 °C)Rated heating output gas/oil(at system temperature80/60 °C)Full load kW 50 70 90 115Partial load30%kW 20.3 28.4 36.6 47.0Full load kW 47.3 66.2 85.1 108.7Partial load30%kW 19.2 26.8 34.6 44.4Full load kW 45.2 63.5 81.8 104.7Combustion heat output kW 18.6 - 46.4 26.0 - 65.1 33.6 - 83.9 43.0 - 107.5CO 2 level gas % 10CO 2 level oil % 13Flue gas temperature 1)(at system temperature50/30 °C)Flue gas temperature 1)(at system temperature80/60 °C)Flue gas mass flow rate(at system temperature50/30 °C)Flue gas mass flow rate(at system temperature80/60 °C)Full load °C 45Partial load30%°C 30Full load °C 72Partial load30%°C 40Full load kg/s 0.0189 0.0268 0.0344 0.0443Partial load30%kg/s 0.0074 0.0103 0.0133 0.0171Full load kg/s 0.0198 0.0277 0.0357 0.0458Partial load30%kg/s 0.0079 0.0111 0.0143 0.0183Water capacity (approx.) l 237 233 250 240Gas content l 90 120 138 142Available draughtwith LogatopVMwith LogatopBE-APa 50Pa 16 36 – –without burner Pa depends on burner (50) 2)Pressure drop on the hot gas side mbar 0.43 0.51 0.59 0.77Permissible flow temperature 3)Table 6 Specification for the Logano plus SB315 and SB315 VM floor standing condensing boilers(dimensions page 15)1) Calculated flue gas temperature for cross-sectional calculation to DIN EN 13384 (average value across the series).The actual flue gas temperature may differ from this, subject to burner setting and actual system temperature.2) Figure in brackets is the recommended draught.°C 110Permitted operating pressure bar 4Type approval number – 06-223-708Product ID no. – CE-0085 AT 00743) Safety limit (high limit safety cut-out - STB); maximum possible flow temperature = safety limit (STB) – 18 KExample: safety limit (STB) = 100 °C; maximum possible flow temperature = 100 – 18 = 82 °CTechnical guide Floor standing gas/oil condensing boilers Logano plus SB315, SB615, SB745 – 6 720 802 589 (2012/01) 21