Baxi EcoBlue Heat (12, 15, 18, 21, 24)
Heat only, natural gas
Combustion figures
| Figure | Natural gas (G20) |
|---|---|
CO₂ at high rate More infoHide infoFrom setting the gas valve (MI 10.3.13), in chimney sweep mode at maximum rate. There must always be a difference of 0.4% between the maximum and minimum CO₂ readings. | 9.3% ±0.1% |
CO₂ at low rate More infoHide infoFrom setting the gas valve (MI 10.3.13), in chimney sweep mode at minimum rate. | 8.9% ±0.1% |
Maximum CO More infoHide infoChecked at both maximum and minimum rate in the commissioning combustion check (MI 7.4.2). | < 350 ppm |
CO/CO₂ ratio More infoHide infoCommissioning (MI 7.4.2) and servicing (MI 10.1, 10.3.13) say less than 0.004. Technical data (MI 3.1) says up to a maximum of 0.004. | < 0.004 |
O₂ | Not given in MI |
Working inlet pressure More infoHide infoWith the boiler at maximum rate. At the gas meter: 19–23 mbar. MI 7.5.1 says the inlet pressure at the gas valve test point must be at least 17 mbar. Technical data gives a dynamic (nominal) inlet pressure of 20 mbar. |
|
Gas rate at maximum More infoHide infoNatural gas (G20), after 10 minutes, with a CV of 37.78 MJ/m³. |
|
Flue integrity More infoHide infoAt the air inlet test point, boiler at maximum rate. | O₂ ≥ 20.6% CO₂ < 0.2% |
From 7212435 - 02 (08/14)
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 |
|---|---|---|
| EcoBlue 12 Heat | 41-470-02 | NG |
| EcoBlue 15 Heat | 41-470-03 | NG |
| EcoBlue 18 Heat | 41-470-04 | NG |
| EcoBlue 21 Heat | 41-470-05 | NG |
| EcoBlue 24 Heat | 41-470-06 | NG |
Source: Baxi EcoBlue Heat 12 - 15 - 18 - 21 - 24 Installation and Service Manual, 7212435 - 02 (08/14).
Sections: 1 Model Range; 3.1 Technical Data; 7.4.1 Chimney Sweep Mode (CSM); 7.4.2 Chimney Sweep Mode - Combustion Check; 7.5.1 Check the Operational (Working) Gas Inlet Pressure; 10.1 General; 10.3.13 Setting the Gas Valve (CO2 Check).
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.