Baxi Megaflo System HE (15, 18, 24, 28, 32 HE)
System boiler, natural gas
Combustion figures
| Figure | Natural gas (G20) |
|---|---|
CO₂ at high rate More infoHide infoChecked in Calibration Mode at maximum rate, at the flue adaptor test point, after running the boiler for several minutes. Only check and adjust if a suitable calibrated combustion analyser is available. | 8.7% ± 0.2 |
CO₂ at low rate More infoHide infoChecked in Calibration Mode at minimum rate (display reads 0). If the CO₂ is reset at either rate, recheck the other rate. | 8.4% ± 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 infoMeasurement point not stated in MI. Technical data gives inlet pressure 20 mbar; commissioning says the gas supply pressure should be 20 mb; fault finding gives a preferred minimum gas pressure of 20 mbar, and the fault finding chart says to check the natural gas supply pressure is greater than 10–11 mbar. No range is given. | 20 mbar |
Gas rate at maximum More infoHide infoNatural gas G20, after 10 minutes. Commissioning gives the same figures as approximate values, measured in Calibration Mode at maximum rate with other appliances and pilot lights off. |
|
From UK Comp No 5122328 - Iss 3 - 8/07
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 Megaflo System 15 HE | 41-075-52 | NG |
| Baxi Megaflo System 18 HE | 41-075-53 | NG |
| Baxi Megaflo System 24 HE | 41-075-47 | NG |
| Baxi Megaflo System 28 HE | 41-075-48 | NG |
| Baxi Megaflo System 32 HE | 41-075-54 | NG |
Source: Baxi Megaflo System HE Range Installation & Servicing Instructions, UK Comp No 5122328 - Iss 3 - 8/07.
Sections: 4.1 Technical Data; 11.2 Checking (commissioning); 15.1 Checking the CO2; 18.1 Initial Fault Finding Checks; 18.0 Fault Finding chart H.
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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.