Baxi Duo-tec Combi HE LPG (28 HE LPG)
Combi, LPG (propane) only
Combustion figures
| Figure | Natural gas (G20) | LPG (G31) |
|---|---|---|
CO₂ at high rate More infoHide infoPropane only: this manual covers no natural gas model. Checked in Calibration Mode at maximum rate, at the flue adaptor test point, after running the boiler for several minutes (MI 15.1). The same figure is given in MI 13.1. | Not given in MI | 10% ± 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 it must be rechecked at the other rate (MI 15.1). The same figure is given in MI 13.1. | Not given in MI | 9.8% ± 0.2 |
Maximum CO | Not given in MI | Not given in MI |
CO/CO₂ ratio More infoHide infoFrom the annual service combustion check (MI 13.1). | Not given in MI | Less than 0.004 |
O₂ | Not given in MI | Not given in MI |
Working inlet pressure More infoHide infoMeasurement point not stated in MI. Technical data (4.1) gives the inlet pressure as 37 mbar, 11.2 and the fault finding chart say the gas supply pressure should be 37 mbar, and 18.1 says the minimum gas pressure is 37 mbar. | Not given in MI | 37 mbar |
Gas rate at maximum More infoHide infoAfter 10 minutes (MI 4.1). MI 11.2 gives it as an approximate value, checked in Calibration Mode with other appliances and pilot lights off. | Not given in MI | 2.25 kg/h |
From UK Comp No 5131787 - Iss 1 - 4/08
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 Duo-tec Combi 28 HE LPG | 47-075-39 | LPG |
Source: Baxi Duo-tec Combi HE LPG installation & servicing instructions, UK Comp No 5131787 - Iss 1 - 4/08.
Sections: 4.1 Technical data; 11.2 Checking; 13.1 Annual servicing; 15.1 Checking the CO2; 18.1 Initial fault finding checks; 18.0 Fault finding chart.
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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.