Baxi 47 075 35 Installation & Servicing Instructions Manual page 49

That the boiler has been installed in accordance with these instructions.
The integrity of the flue system and the flue seals.
The integrity of the boiler combustion circuit and the relevant seals.
Proceed to put the boiler into operation as follows:
Fig. 52, Fig. 53 and Fig. 54
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11.2 Check the Operational (Working) Gas Inlet Pressure
1. Ensure that all controls are calling for heat, and the selector switch is in the central heating and hot water position (
The current boiler temperature is shown on the display.
2. To check the gas rate it is necessary to set the boiler to 'Calibration Mode'.
3. Turn both temperature control knobs fully anticlockwise, then quickly turn the DHW temperature knob 1/4 clockwise twice and back
fully anticlockwise (Fig. 55).
4. The display will now alternate between 'SF' and the current boiler temperature and both green LEDs will flash (Figs. 56 & 57).
5. Turn CH temperature control knob fully clockwise. As the knob is turned the display will change from '0' to '00' (Fig. 58) indicating
maximum rate, then revert to 'P' alternating with the current boiler temperature (Figs 59 & 60).
6. With the boiler operating in the maximum rate condition check that the operational (working) gas pressure at the inlet gas pressure
test point (Fig. 55a) is in accordance with B.S. 6798 & B.S. 6891.
7. Ensure that this inlet pressure can be obtained with all other gas appliances in the property working.
Measure the Gas Rate
8. With any other appliances & pilot lights turned OFF the gas rate can be measured. It should be between:­
24 model 2.61 m3/h
).