De Dietrich MS 24 MI FF Notice D'installation, D'utilisation Et D'entretien page 83

To simplify calibration of the gas valve, the calibration function may be set directly
on the boiler control panel as follows:
a) hold down the buttons
b) after about 6 seconds, the symbols
c) the display shows, at intervals of one second, "100" and the flow temperature.
In this phase, the boiler works at the maximum heating output (100%).
d) press +/- to immediately set the power of the boiler (100% or 0%);
e) adjust the "Pmax/Pmin" screw (figure 10) to set the burner pressure value as
described in table 1.
To adjust pressure at maximum power, turn the "Pmax" screw (fig. 10) clockwise
to increase or anti-clockwise to decrease pressure at the burner.
To adjust pressure at minimum power, turn the "Pmin" screw (fig. 10) clockwise
to increase or anti-clockwise to decrease pressure at the burner.
f) press +/- to gradually set the desired power level (interval = 1%).
Press the button to leave the function.
Note:
The function is automatically deactivated after a period of 15 minutes, at the end of which the electronic board returns to
its operating status prior to the activation of the function or prior to reaching the set maximum temperature.
Table of burner nozzles
gas type
diameter of nozzles (mm)
Burner pressure (mbar*)
REDUCED HEAT OUTPUT
Burner pressure (mbar*)
RATED HEAT OUTPUT
Diameter of gas diaphragm (mm)
N° nozzles
Table 1
Consumption 15°C-1013 mbar
Rated power
Reduced power
p.c.i.
Table 2
* 1 mbar = 10,197 mmH O
2
INSTALLATION INSTRUCTIONS
19.1 GAS VALVE CALIBRATION FUNCTION
and together for at least 6 seconds;
flash;
24 MI FF - 24 FF
G20 G31
1,28 0,77
2,0 5,7
11,6 32,6
4,8 —
13
24 MI FF - 24 FF
G20
G31
3
2,80 m /h 2,00 kg/h
1,12 m 3 /h 0,82 kg/h
34,02 MJ/m 3 46,34 MJ/kg
24 - 24 MI
G20 G31
1,18 0,77
2,4 5,6
13,8 31,0
5,5 —
24 - 24 MI
G20
G31
3
2,80 m /h 2,04 kg/h
1,12 m 3 /h 0,82 kg/h
34,02 MJ/m 3 46,34 MJ/kg
83
71.03982.03 - EN