ENG - Manual of installation, use and maintenance.
210-0352_libretto_WHC_ATI_eng.docx
20
Jan-19
21.
GAS SETTING AND CHANGING OF GAS TYPE
CONVERSION OF GAS TYPE
To convert the appliance to another gas type it is necessary to replace the injector assembly with the one specially conceived for
the gas type supplied by the gas pipeline. Then set the gas value on the control display (see "Gas value menu" in the table
below), from menu 01 parameter 26.
Gas Type
Gas Value menu
CO2 values
G20 - 20 mbar
1
9.2% max / min 9.2%
G25 - 25 mbar
3
9.0% max / min 9.0%
G31 - 37 mbar
2
11.2% max / min 11.1%
1.
Replace the injector assembly with the one of the gas
to be used
2.
Set the correct gas value on the display menu: at
menu 01, parameter 26, from 1 to 3 you have the gas
value according to the gas type to be set (see gas
value in the table above).
3.
Adjust the gas valve to the correct CO
2
values at the
maximum and minimum output.
READING AND ADJUSTING THE CO
2
VALUE AT MAXIMUM OUTPUT
-
Press the
button for at least 4 seconds. In this way, the chimney sweep function will be activated at maximum
output ("St H" will appear on the display).
-
Detect the CO
2
value at the analyzer, through the flue inspection plug on the coaxial pipe.
-
If this value does not correspond to the correct one given in the table, it is necessary to adjust the screw of the
maximum value in order to obtain the indicated value.
-
Turn the screw counterclockwise to increase the value of CO
2
% and clockwise to reduce it.
READING AND ADJUSTING THE CO
2
VALUE AT MINIMUM OUTPUT
-
With the
“
chimney sweep
” function
already active, press the button
of
without exiting the sweep mode: in
this way, the boiler is forced to the minimum power.
-
Detect the CO
2
value at the analyzer, through the flue inspection plug on the coaxial pipe.
-
If this value does not correspond to the correct one given in the table, it is necessary to adjust the screw of the
minimum value in order to obtain the indicated value.
-
Turn the screw clockwise to increase the value of CO
2
% and counterclockwise to reduce it.
-
Return to the maximum power through the key
, to verify that the adjustment of CO
2
at the minimum output did
not affect the maximum one.
-
Press
to exit the chimney sweep mode.
