Baxi LUNA3COMFORT Installers And Users Instructions page 23

C) Pressure adjusting device setting (Figure 13)
test point (Pb); connect, for sealed chamber models only, the negative pressure test point of the manometer to a "T"
fitting in order to join the boiler adjusting outlet, the gas valve adjusting outlet (Pc) and the manometer. (The same me-
asurement can be carried out by connecting the manometer to the pressure test point (Pb) after removing the sealed
chamber front panel);
If you measure the pressure of burners in a different way you may obtain an altered result in that the low pressure created
in the sealed chamber by the fan would not be taken into account.
SIT valve - mod. SIGMA 845
Figure 13
C1) Adjustment to nominal heat output
button (figure 1) and set the boiler in winter mode;
mbar for propane gas G.31, 20 mbar for natural gas G20);
C2) Adjustment to reduced heat output
reduced heat output (see table 1);
C3) Final checks
10 l/min flow rate or ensure that maximum heating requirements are set;
a) figure 14 to obtain the pressure settings shown in table 1;
Honeywell valve - mod. VK 4105 M
b) screw to reach the pressure setting corresponding to
23
Pa) is correct (37
925.220.4 - EN