Vaillant ecoMAX pro heat only (18 E, 28 E)
Heat only condensing boiler, natural gas
Combustion figures
| Figure | Natural gas (G20) |
|---|---|
CO₂ at high rate More infoHide infoRate not stated in MI. Section 17 gives one figure, Burner % CO₂ 9.0 +/-0.2, for both the 18 E and 28 E without saying at which rate, so it is shown in both CO₂ rows. Measured at the combustion analyser test point on the flue adaptor (section 14.1, Fig. 14.4). The MI says the boiler is supplied ready adjusted and no further gas adjustments are necessary (section 13.5). | 9.0% ± 0.2 |
CO₂ at low rate More infoHide infoRate not stated in MI. Same single figure as the high rate row (section 17, Burner % CO₂). | 9.0% ± 0.2 |
Maximum CO | Not given in MI |
CO/CO₂ ratio | Not given in MI |
O₂ | Not given in MI |
Working inlet pressure More infoHide infoWith the boiler firing at full rate, at least 10 minutes after the burner has lit (section 13.5). No tolerance given. Section 4.3 asks for a steady inlet working pressure of 20 mbar at the boiler, and section 17 gives 20 mbar as the inlet gas working pressure required, without saying where it is measured. |
|
Gas rate at maximum More infoHide infoApproximate gas rates, checked at least 10 minutes after the burner has lit (section 13.5). Section 17 prints the same maximum gas rates, and minimum gas rates of 0.48 (18 E) and 0.52 (28 E), but with the unit given as mbar. |
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From ecoMAXpro_00 GB 10/2002 X
Enter service mode for high and low rate
High rate
Steps not added yet. Follow the MI.
Low rate
Steps not added yet. Follow the MI.
Ending the test: follow the MI.
Models
| Model | Gas |
|---|---|
| ecoMAX pro 18 E | NG |
| ecoMAX pro 28 E | NG |
Source: Vaillant ecoMAX pro 18 E, 28 E instructions for use, installation and servicing, ecoMAXpro_00 GB 10/2002 X.
Sections: 2.2 Gas Category; 4.3 Gas Supply; 4.4 Technical Data (Fig. 4.2 data label); 13.5 Testing - Gas; 14.1 General; 15 Fault finding; 17 Boiler Specification.
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Check these figures against the MI for the appliance in front of you, matched by GC number and manual date. Combustion work needs a calibrated analyser and a Gas Safe registered engineer.