Gas Consumption By Gas Type - Rational iCombi Pro Original Installation Instructions

2. Use a suitable gas leak detector to check the gas supply and gas distribution
on the unit for leaks.

10.3 Gas consumption by gas type

Natural gas EK G25.3 Netherlands
Required connection
flow pressure (mbar)
Wobbe index (MJ/
m³) Wi
Wobbe index (MJ/
m³) Ws
Max. consumption at
nominal heat load (at
15 °C, 1013 mbar)
Max. consumption at
nominal heat load (at
15 °C, 1013 mbar)
Natural gas G20 USA (North America)
Required connection
flow pressure (mbar)
Wobbe index (MJ/m³)
Wi
80.06.083_iCombiPro-iCombiClassic_IM_en-US
6 half 6 full
size size
20-30 20-30
38.49 38.49
42.71 42.71
1.56 3.37
m³/h m³/h
13 kW 28 kW
6 half 6 full
size size
6.5-10. 6.5-10.
0 in/wc 0 in/wc
45.67 45.67
10 | Gas connection for gas units
10 half 10 full
size size
20-30 20-30
38.49 38.49
42.71 42.71
2.65 4.81
m³/h m³/h
22 kW 40 kW
10 half 10 full
size size
6.5-10. 6.5-10.
0 in/wc 0 in/wc
45.67 45.67
20 half 20 full
size size
20-30 20-30
38.49 38.49
42.71 42.71
5.05 9.63
m³/h m³/h
42 kW 80 kW
20 half 20 full
size size
6.5-10. 6.5-10.
0 in/wc 0 in/wc
45.67 45.67
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