Specifications Table for D2TND-A4A

D2TND012A4AB D2TND018A4AB D2TND024A4AB D2TND028A4AB D2TND035A4AB D2TND012A4AA (Archived) D2TND018A4AA (Archived) D2TND024A4AA (Archived) D2TND028A4AA (Archived) D2TND035A4AA (Archived)
Gas Consumption (G20) Min m³/h           0.31 0.31 0.31 0.511 0.511
    Max m³/h           1.18 1.80 2.48 2.89 3.63
  Consumption (G25) Min m³/h           0.36 0.36 0.36 0.59 0.59
    Max m³/h           1.38 2.09 2.89 3.32 4.19
  Consumption (G31) Min m³/h           0.12 0.12 0.12 0.2 0.2
    Max m³/h           0.46 0.69 0.96 1.1 1.38
  NOx class   6 6 6 6 6 6 6 6 6 6
  NOx level (G20) mg/kWh 10 18 22 36 35.5 10 18 22 36.3 35.5
Central heating Heat input Qn (net calorific value) Nom Min kW 2.9 2.9 2.9 4.8 4.8 2.9 2.9 2.9 4.8 4.8
      Max kW 11.1 16.9 23.5 27 34 11.2 17.0 23.5 27 34
  Heat input Qn (gross calorific value) Nom Min kW 3.2 3.2 3.2 5.3 5.3 3.2 3.2 3.2 5.3 5.3
      Max kW 12.3 18.8 26.1 30 37.8 12.4 18.9 26.1 30 37.8
  Output Pn at 80/60°C Min kW           2.8 2.8 2.8 4.6 4.6
    Nom kW           10.9 16.6 22.8 26.3 33.2
  Output Pnc at 50/30°C Min kW           3.1 3.1 3.1 5.2 5.2
    Nom kW           12.0 18.0 24.0 28.2 35
  Output at 37/30°C Nom kW           3.7 5.6 7.6 8.8 11.1
  Water temperature Max °C           100 100 100 100 100
  Efficiency Net calorific value % 98.6 98.18 97.9     98.6 98.2 97.9    
    Gross calorific value % 87.8 87.4 87.3     87.8 87.4 87.3    
Domestic hot water Heat input (net calorific value) Qnw Nom Min kW 2.9 2.9 2.9 4.8 4.8 2.9 2.9 2.9 4.8 4.8
      Max kW 11.1 16.9 25.3 29.5 34 11.2 17.0 23.5 29.5 34
  Heat input (gross calorific value) Qnw Nom Min kW 3.2 3.2 3.2 5.3 5.3 3.2 3.2 3.2 5.3 5.3
      Max kW 12.3 18.1 26.1 32.7 37.7 12.4 18.1 26.1 32.7 37.7
  Temperature Max °C           60 60 60 60 60
Space heating General ηs (Seasonal space heating efficiency) %           93 93 93 93 93
    Seasonal space heating eff. class   A A A A A A A A A A
Heat losses Stand-by boiler Ps kW 0.057 0.057 0.057 0.065 0.065 0.057 0.057 0.057 0.0650 0.0650
Supply air Concentric   Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Flue gas Temperature Max °C           90 90 90 76.4 81.7
  Mass flow (G20) Max kg/h 38.7 38.7 38.7 55.7 55.7 38.7 38.7 38.7 44.5 55.7
  Mass flow (G25) Max kg/h       39.3 49.6       39.3 49.6
  Mass flow (G31) Max kg/h 36 36 36 43.3 54.7 36.0 36.0 36.0 43.3 54.7
Casing Colour   Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003) Titanium White (Ral9003)
  Material   Sheet metal Sheet metal Sheet metal Powder painted galvanised steel plate Powder painted galvanised steel plate Sheet metal Sheet metal Sheet metal Powder painted galvanised steel plate Powder painted galvanised steel plate
Dimensions Unit Height Casing mm 590 590 590 690 690 590 590 590 690 690