Operating instructions ecoTEC plus 0020124810_FT1b 2710 Technical data10 Technical dataecoTEC plus Unit VU GB126/5-5VU GB156/5-5VU GB186/5-5VU GB246/5-5VU GB306/5-5VU GB376/5-5Nominal heat output range P at 40/30 °C kW 3.3 - 13.1 3.3 - 16.4 4.1 - 19.7 5.7 - 26.2 6.4 - 32.8 7.0 - 40.4Nominal heat output range P at 50/30 °C kW 3.2 - 12.9 3.2 - 16.1 4.1 - 19.3 5.6 - 25.7 6.2 - 32.1 6.9 - 39.6Nominal heat output range P at 60/40 °C kW 3.1 - 12.5 3.1 - 15.7 3.9 - 18.8 5.5 - 24.9 6.1 - 31.2 6.7 - 38.5Nominal heat output range P at 80/60 °C kW 3.0 - 12.0 3.0 - 15.0 3.8 - 18.0 5.2 - 24.0 5.8 - 30.0 6.4 - 37.0Hot water output kW 12.0 15.0 18.0 24.0 30.0 37.0Maximum thermal load for heating drinking water kW 12.4 15.5 18.6 24.7 30.9 38.1Maximum thermal load on heating-side kW 12.4 15.5 18.6 24.7 30.9 38.1Minimum thermal load kW 3.1 3.1 3.9 5.4 6.0 6.6Heating output setting range kW 3 - 12 3 - 15 4 - 18 5 - 24 6 - 30 6 - 37Heatingmax. flow temperature °C 85Setting range max. flow temperature(factory setting: 75 °C) °C 30 - 80permissible total over-pressure bar 3.0Circulation water volume (with reference to T = 20 K) l/min 516 645 774 1032 1290 1591Condensate volume approx. (pH value 3.5- 4.0)in heating mode 50 °C supply/30 °C return l/h 1.2 1.6 1.9 2.5 3.1 3.8Residual feed head pump(at nominal circulation water volume) mbar 250 200Electrical power consumption at 30% part load W 40 40 45 50 50 50Hot water handling (only VUW)Least water volume l/min 1.5Water volume (at T = 35 K) l/min 4.9 6.1 7.4 9.8 12.3 15.2Water volume (at T = 30 K) l/min 5.7 7.2 8.6 11.5 14.3 17.7Permitted overpressure bar 10.0Required connection pressure bar 0.35Hot water discharge temperature range °C 35 - 65GeneralUnit gas connection Inches G 1/2Unit heating connection Inches G 3/4Unit cold and hot water connection Inches G 3/4Exhaust gas connecting pieces mm 60/100 (concentric), optional 80/125 (concentric)Gas connection pressure (gas flow pressure)natural gas, G20 mbar 20Gas connection pressure (gas flow pressure)propane, G31 mbar 37Connection value at 15 °C and 1013 mbar(based on hot water production if necessary) G20G31m 3/hkg/h1.30.961.61.22.01.442.61.923.32.44.02.96Exhaust gas mass flow min./max. g/s 1.4/5.6 1.4/7.0 1.8/8.4 2.4/11.1 2.7/13.9 3.0/17.1Flue gas temperature min./max. °C 40/70Exhaust gas connection approval C13. C33, C43, C53, C63, C83, C93, B53Standard utilisation rate based on nominal heat output(in accordance with DIN 4702, Part 8) based on Hi(heating value)at 75/60 °Cat 40/30 °C%%107109Standard utilisation rate based on nominal heat output(in accordance with DIN 4702, Part 8) based on Hs(calorific value)at 75/60 °Cat 40/30 °C%%96.498.230% efficiency % 108NOx class 5Unit dimensions (H x W x D) mm 720 x 440 x 335 720 x 440x 369720 x 440x 403Installation weight approx. kg 35 35 35 37 39 41Tab. 16.1 Technical data ecoTEC plus VU(continued on next page)