Documento riservato – A solo uso interno / Confidential document – Internal use only
Gas valve adjustments
Adjustment of Nominal Output (P.max)
• Connect the positive pressure intake of a differential manometer to the
gas valve pressure intake (Pb).
• Connect the negative pressure intake of the manometer to a “T” fitting
in order to join the boiler compensation intake, the gas valve
compensation intake (Pc) and the manometer. (The same measurement
can be carried out by connecting the manometer to the pressure intake
Pb after removing the sealed chamber front panel).
• Open the gas tap and rotate the selector knob to Winter position.
• Open a hot water tap at a minimum flow rate of 10 l/min or ensure that
maximum heating demand is set;
• Remove the modulator plastic cover and adjust the brass screw nut to
obtain the pressure value as specified in the instruction manual of the
boiler.
• Check that the dynamic pressure measured at the pressure intake (Pa)
is correct.
To Next Page
Loading...
