Vaillant ecoMAX pro Instructions For Use Installation And Servicing page 26

13 Conversion
- Again in screen '8', Set the appliance fan speed/burner
to minimum by pressing the '-' key until '1' (burner to
Pmin) is shown on the right hand side of the screen.
Press the 'mode' button again.
- Check the CO2 value, which should be 10.5 % ± 0.2 %.
If adjustment proves necessary then proceed as
follows.
- Adjustment of the CO2 at minimum rate is very
coarse, so carefully adjust the CO2 with the ('B') offset
adjustment using a 2 mm allen key to 10.5 %, (rotate
clockwise to increase).
- After checking the combustion, press and hold the
'mode' button for 10 seconds to return to the normal
mode, showing the current flow temperature. Replace the
cap on the sampling point and refit the outer front case.
- Fit the LPG conversion label to the data badge.
- Re-commission boiler as described in the Installation
and Servicing Instructions supplied with boiler.
26
"A" throttle –
"Pmax" rotate
to increase
"B" offset adjustment
"Pmin" rotate
to increase
Fig 13.4
Fig 13.5
Appliance CO 2 content at nominal
ecoMAX pro 28E
Instructions for Use, Installation and Servicing ecoMAX pro
load for LPG in vol. %
10.5 % ± 0.2 %