Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

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8 Installation and maintenance instructions ecoTEC sustain 0020253094_053 Technical dataTechnical data – GeneralVUW 246/7-2 (H-GB)VUW 286/7-2 (H-GB)VUW 346/7-2 (H-GB)Gas category II2H3P II2H3P II2H3PDiameter of the gas pipe 1/2" 1/2" 1/2"Diameter of the heating pipe 3/4" 3/4" 3/4"Diameter of the domestic hot waterpipe3/4" 3/4" 3/4"Expansion relief valve connector(min.)15.0 mm 15.0 mm 15.0 mmCondensate discharge pipe (min.) 21.5 mm 21.5 mm 21.5 mmG20 gas supply pressure 2.0 kPa(20.0 mbar)2.0 kPa(20.0 mbar)2.0 kPa(20.0 mbar)G31 gas supply pressure 3.7 kPa(37.0 mbar)3.7 kPa(37.0 mbar)3.7 kPa(37.0 mbar)Gas flow at P max. – domestic hotwater (G20)2.6 m³/h 3.0 m³/h 3.7 m³/hCE number (PIN) CE-0063CR3775 CE-0063CR3775 CE-0063CR3775SAP 2009/2012 annual efficiency (%) 89.2 89.1 89.2Flue gas mass flow rate in heatingmode at P min.3.1 g/s 3.6 g/s 4.1 g/sFlue gas mass flow rate in heatingmode at P max.8.9 g/s 8.9 g/s 8.9 g/sFlue gas mass flow rate in domestichot water mode at P max.11.6 g/s 13.6 g/s 16.5 g/sReleased system types C13, C33, C43, C53 C13, C33, C43, C53 C13, C33, C43, C53Min. flue gas temperature 44 ℃ 41 ℃ 43 ℃Max. flue gas temperature 85 ℃ 95 ℃ 99 ℃Nominal efficiency at 80/60 °C 98.9 % 98.9 % 98.9 %Nominal efficiency at 50/30 °C 107.5 % 107.3 % 106.6 %Partial load nominal efficiency (30%) 107.4 % 108.0 % 108.1 %NOx class 6 6 6Product dimensions, width 440 mm 440 mm 440 mmProduct dimensions, depth 338 mm 338 mm 338 mmProduct dimensions, height 720 mm 720 mm 720 mmNet weight 30.8 kg 30.8 kg 32.8 kgWeight when filled with water 33.5 kg 33.5 kg 35.9 kgTechnical data – G20VUW 246/7-2 (H-GB)VUW 286/7-2 (H-GB)VUW 346/7-2 (H-GB)Effective output range (P) at 50/30 °C 7.0 to 20.1 kW 8.0 to 20.1 kW 9.1 to 19.9 kWEffective output range (P) at 80/60 °C 6.4 to 18.5 kW 7.4 to 18.5 kW 8.4 to 18.5 kWHeat output range – domestic hot wa-ter or cylinder reheating (P)6.6 to 24.3 kW 7.5 to 28.1 kW 8.4 to 34.0 kWMaximum heat input – heating (Qmax.)18.7 kW 18.7 kW 18.7 kWMinimum heat input – heating (Q min.) 6.6 kW 7.6 kW 8.6 kWMaximum heat input – Domestic hotwater or cylinder reheating (Q max.)24.4 kW 28.5 kW 34.6 kWMinimum heat input – Domestic hotwater or cylinder reheating (Q min.)6.6 kW 7.6 kW 8.6 kW