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Baxi Checked against MI

Baxi Platinum Combi HE (24 HE, 28 HE, 33 HE, 40 HE)

Combi, natural gas

Combustion figures

FigureNatural 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. Case position not stated in MI.
8.7% ± 0.2
CO₂ at low rate
More infoHide infoChecked in Calibration Mode at minimum rate (display reads ’ 0’). If 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 (11.3) says the gas supply pressure should be 20 mb; fault finding (18.1) gives a preferred minimum of 20 mbar, and fault finding chart I says check the supply pressure is greater than 10–11 mbar.
20 mbar
Gas rate at maximum
More infoHide infoAfter 10 minutes, with other appliances and pilot lights off, in Calibration Mode at maximum rate. Commissioning (11.3) calls these approximate values.
24 HE
2.61 m³/h
28 HE
3.1 m³/h
33 HE
3.6 m³/h
40 HE
4.36 m³/h

From UK Comp No 5121651 - Iss 2 - 3/07

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

ModelGC numberGas
Baxi Platinum Combi 24 HE47-075-27NG
Baxi Platinum Combi 28 HE47-075-28NG
Baxi Platinum Combi 33 HE47-075-29NG
Baxi Platinum Combi 40 HE47-075-30NG

Source: Baxi Platinum Combi HE Range Installation & Servicing Instructions, UK Comp No 5121651 - Iss 2 - 3/07.

Sections: 4.1 Technical Data; 11.3 Checking; 15.1 Checking the CO2; 18.1 Initial Fault Finding Checks; 18.0 Fault Finding chart I.

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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.