6 Installation and maintenance manual ecoTEC2 Boiler specifications2.1 Technical dataTechnical data ecoTEC plus Units612 615 618 624 630CH heat output range80 °C flow/60 °C return60 °C flow/40 °C return50 °C flow/30 °C return40 °C flow/30 °C return4.0 – 12.04.1 – 12.34.3 – 12.74.4 – 12.94.0 – 15.04.1 – 15.54.3 – 15.94.4 – 16.26.0 – 18.06.1 – 18.66.3 – 19.16.5 – 19.58.7 – 24.09.0 – 24.79.3 – 25.59.4 – 26.010.0 – 30.010.3 – 30.910.6 –31.810.8 – 32.4kWkWkWkWMemory charging capacity 12.0 15.0 18.0 24.0 30.0 kWMaximum thermal load during memory charging 12.2 15.3 18.4 24.5 30.6 kWMaximum thermal load for heating 12.2 15.3 18.4 24.5 30.6 kWMinimum thermal load 4.1 4.1 6.1 8.9 10.2 kWCategory II2H3PSEDBUK A A A A A BandInlet gas working pressure required (G20, natural gas) 20 mbarInlet gas working pressure required (G31, Propane) 37 mbarConnected load (if needed, related to stored charge/water heating) at 15 °C and 1013 mbarG20: 1.3G31: 0.95G20: 1.6G31: 1.19G20: 1.9G31: 1.43G20: 4.1G31: 1.90G20: 3.2G31: 2.38m3/hkg/hExhaust mass rateat minimum thermal load (40 °C flow/30 °C returnat maximum thermal load (80 °C flow/60 °C return)1.95.51.96.92.88.34.111.14.713.8g/sg/sExhaust temperatureat minimum thermal load (40 °C flow/30 °C return)at maximum thermal load (80 °C flow/60 °C return)4070°C°CStandard efficiency factor in compliance with DIN4702, T.8 (related to rated thermal output setting)75 °C flow/60 °C return40 °C flow/30 °C return107109%%30 % efficiency 108 %NOx class 5Protection class IP X4Dmax. flow temperature 85 °CAdjustable flow temperatureDefault setting: max. 75 °C 40 – 85 °CPermitted total overpressure 3.0 barCirculating water volume (∆T=20 K) 516 645 774 1032 1290 l/hApprox. condensation volumeat 40 °C flow/30 °C return heating 1.1 1.4 1.7 2.2 2.7 l/hPump delivery height 250 mbarAdjustable storage target value (15 °C at left stop,spare adjusting range 40 – 70 °C 15 – 70 °CExhaust nozzles 60/100 mm10 l expansion vessel pre-charge pressure 0.75 0.75 0.75 0.75 0.75 barMaximum CH system pressure 2.5 2.5 2.5 2.5 2.5 barConnections heating flow/return 3/4“ 3/4“ 3/4“ 3/4“ 3/4“Gas inlet 15 15 15 15 15 mmPressure relief discharge pipework (min.) 15 15 15 15 15 mmCondensate drain (min. internal drain) 19 19 19 19 19 mmWeight 38 38 40 39 40 kgPrimary water content 1.9 1.9 1.9 2.1 2.3 lElectrical supply voltage 230/50 230/50 230/50 230/50 230/50 V ~/HzInternal fuse (slow) main voltage 2 APower input min.max.at 30 % efficiency7013065WWWTable 2.1 Technical data 600 series2 Boiler specifications