Vaillant Home Regular (12 -A, 15 -A, 18 -A, 25 -A, 30 -A)
Regular (heat only), natural gas
Combustion figures
| Figure | Natural gas (G20) |
|---|---|
CO₂ at high rate More infoHide infoAfter 5 minutes in full load mode (check programme P.01 set to 100). Set for Wobbe index 15 kWh/m³. When adjusting, set the case-off value. |
|
CO₂ at low rate | Not given in MI |
Maximum CO More infoHide infoThe two figures come from different parts of the MI: the section 7.8 table gives ≤ 250 ppm in full load mode, while the combustion chart (Appendix J) uses less than 350 ppm at maximum and minimum rate. The chart’s recheck after checking seals says 335 ppm. |
|
CO/CO₂ ratio More infoHide infoThe section 7.8 table gives ≤ 0.0027; the combustion chart (Appendix J) uses less than 0.004 at maximum and minimum rate. |
|
O₂ at high rate More infoHide infoIn full load mode. | 4.5% ± 1.8 |
O₂ at low rate | Not given in MI |
Working inlet pressure More infoHide infoMeasured at the gas valve measuring nipple with check programme P.01 set to 100. Technical data gives G20 gas supply pressure 20.0 mbar. |
|
Gas rate at maximum More infoHide infoHeating mode, G20. The technical data also lists gas flow at P max. in hot water mode: 12: 1.6, 15: 1.9, 18: 2.7, 25: 3.2, 30: 3.8 m³/h. |
|
Flue integrity More infoHide infoAt the air inlet test point, boiler at maximum rate (combustion chart, Appendix J). | O₂ ≥ 20.6% CO₂ < 0.2% |
From 0020224338_00 (08.10.2015)
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 and GC numbers
| Model | GC number | Gas |
|---|---|---|
| Home Regular 12 -A (H-GB) | 41-044-88 | NG |
| Home Regular 15 -A (H-GB) | 41-044-89 | NG |
| Home Regular 18 -A (H-GB) | 41-044-90 | NG |
| Home Regular 25 -A (H-GB) | 41-044-92 | NG |
| Home Regular 30 -A (H-GB) | 41-044-93 | NG |
Source: Vaillant HOME REGULAR installation and maintenance instructions, 0020224338_00 (08.10.2015).
Sections: 2.3 Applicability of the instructions; 7.7 Checking the gas connection pressure; 7.8 Checking the CO2 content; 7.9 Setting the CO2 content; 7.10 Checking the leak-tightness of the flue gas system; J Combustion chart; K Technical data.
Spotted something wrong? Tell us.
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.