250 D2CND Daikin Altherma 3 C Gas Supremely compact gas condensing boiler providing heating and hot water J Very compact unit and flexible in use: possible to install in nearly all room conditions (inside the house as well as outside) thanks to freeze protection for water piping J Easy to service: all parts are accessible by only removing the front panel J High heating efficiency up to 109% J High modulating range 1:8: the capacity is adapted based on the required heat load of the house from 3 to 24 kW and 5 to 35 kW J Combine it with solar heating for even better energy efficiency J C-model: The combi model means that the boiler has a plate heat exchanger to provide instant domestic hot water J T-model (tank): The tank model means that the boiler does not have a plate heat exchanger. Domestic hot water is provided by an external storage tank heated by the boiler J A1 model means that the filling loop is internal J A4 model means that the filling loop is external D2CND-A1A/A4A / D2TND-A4A D2CND-A1A D2CND-A4A D2TND-A4A Indoor unit D2 TND012A4A TND018A4A TND024A4A TND028A4A TND035A4A CND024A1A CND028A4A CND035A1A Central heating Heat input Qn (net calorific value) Nom Min/Max kW 2.90/11.20 2.90/17 2.90/23.50 4.80/27 4.80/34 2.90/23.5 4.80/27 4.80/34 Heat input Qn (gross calorific value) Nom Min/Max kW 3.20/12.40 3.20/18.90 3.20/26.10 5.30/30 5.30/37.80 3.20/26.10 5.30/30 5.30/37.80 Output Pn at 80/60 °C Min/Nom kW 2.80/10.90 2.80/16.60 2.80/22.80 4.60/26.30 4.60/33.20 2.80/22.80 4.60/26.30 4.60/33.20 Output Pnc at 50/30 °C Min/Nom kW 3.10/12 3.10/18 3.10/24 5.20/28.20 5.20/35 3.10/24 5.20/28.20 5.20/35 Water pressure (PMS) Max bar 3 Water temperature Max °C 100 Efficiency Net calorific value % 98.60 98.20 97.90 98.20 97.90 - - Operation range Min/Max °C 30/80 Piping connections 19 (3/4”) Male Domestic hot water Heat input (net calorific value) Qnw Nom Min/Max kW 2.90/11.20 2.90/17 2.90/23.50 4.80/29.50 4.80/34 2.90/23.50 4.80/29.50 4.80/34 Heat input (gross calorific value) Qnw Nom Min/Max kW 3.20/12.40 3.20/18.10 3.20/26.10 5.30/32.70 5.30/37.70 3.20/26.10 5.30/32.70 5.30/37.70 Domestic hot water threshold L/min - 2.50 2 Temperature Factory setting °C 50 Operation range Min/Max °C 35/60 Gas Gas connection diameter mm 19 (3/4”) Male Consumption (G20) Min/Max m³/h 0.31/1.18 0.31/1.80 0.31/2.48 0.511/2.89 0.511/3.63 0.31/2.48 0.511/2.89 0.511/3.63 Consumption (G25) Min/Max m³/h 0.36/1.38 0.36/2.09 0.36/2.89 0.59/3.32 0.59/4.19 0.36/2.89 0.59/3.32 0.59/4.19 Consumption (G31) Min/Max m³/h 0.12/0.46 0.12/0.69 0.20/1.10 0.20/1.38 0.12/0.96 0.20/1.10 0.20/1.38 Supply air Connection mm 100 Concentric Yes Flue gas Connection mm 60 Space heating General ŋs (Seasonal space heating efficiency) % 93 Seasonal space heating eff. class D A+++ Domestic hot water heating General Declared load profile - XL ŋwh (water heating efficiency) % - 84 83 Water heating energy efficiency class - F A+ Casing Colour Titanium White (RAL9003) Material Sheet metal Powder painted galvanised steel plate Sheet metal Powder painted galvanised steel plate Dimensions Unit HeightxWidthxDepth Casing mm 590x400x256 690x440x295 590x400x256 690x440x295 Weight Unit Empty kg 27 36 27 37 Power supply Phase/Frequency/Voltage Hz/V 1 ~/50/230 1 ~/50/230 1 ~/50/230 Electrical power consumption Max. W 86 92 112 86 92 112 Standby W 3.50 2.70 3.50 2.70 80 °C up to + D A+++ F A+ Voice control Onecta app
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