Baxi Solo HE A (12, 15, 18, 24, 30)
Heat only, natural gas
Combustion figures
| Figure | Natural gas (G20) |
|---|---|
CO₂ at high rate More infoHide infoRate not stated in MI. Technical data (section 4.0) gives one CO₂ level, 9% ± 1%, and section 14.2 says to check the CO₂ level at the flue sampling point against it. The same figure is shown for high and low rate. | 9% ± 1% |
CO₂ at low rate More infoHide infoRate not stated in MI. Same single CO₂ level from Technical data (section 4.0). | 9% ± 1% |
Maximum CO More infoHide infoChecked at maximum rate and again at a low rate (section 12.2 flowchart). | < 350 ppm |
CO/CO₂ ratio More infoHide infoThe MI words this two ways: the commissioning flowchart (12.2) and servicing check (14.1) say less than 0.004, but Technical data (4.0) says up to a maximum of 0.004. Checked at maximum and at a low rate. |
|
O₂ | Not given in MI |
Working inlet pressure More infoHide infoInlet pressure at gas valve (natural gas), Technical data section 4.0. Check at the inlet gas pressure test point with the boiler at maximum rate (section 12.3). Do not check at the OUT test point. The fault finding chart (MI 17.0, p. 55) asks for at least 18 mbar dynamic at the gas valve inlet. |
|
Gas rate at maximum More infoHide infoMax gas rate, 2H - G20 - 20 mbar, after 10 mins (Technical data section 4.0). The 30 HE A input is factory set at 24.5 kW and can be altered to 33.76 kW (sections 10.8 and 12.1); the MI doesn’t say which setting the 30 figure is for. |
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From 7204218 - 06 (4/14)
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 |
|---|---|---|
| Baxi Solo 12 HE A | 41-075-65 | NG |
| Baxi Solo 15 HE A | 41-075-66 | NG |
| Baxi Solo 18 HE A | 41-075-67 | NG |
| Baxi Solo 24 HE A | 41-075-68 | NG |
| Baxi Solo 30 HE A | 41-075-69 | NG |
Source: Baxi Solo HE A Range Installation & Servicing Instructions, 7204218 - 06 (4/14).
Sections: 4.0 Technical Data; 12.1 Commissioning the boiler; 12.2 Checking the combustion; 12.3 Check the operational (working) gas inlet pressure; 14.1 Annual servicing (check the combustion performance); 14.2 Annual servicing - inspection; 17.0 Fault Finding.
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.