Ferroli MACH Instrucciones De Uso página 331

MACH
CO control and measurement
2
The sampling of combustion fumes must be
A
done by inserting the analyzer probe into the
fumes outlet of the single module (see
fig. 78).
AVOID SAMPLING FUMES FROM THE
FLUE as the returned value will not be co-
rrect.
After performing the combus-
B
tion analysis, always close the
fumes outlet.
OTHERWISE,
DANGER OF ASPHYSIA DUE
TO COMBUSTION FUMES ES-
CAPING.
fig. 78- Single module fumes outlet
EN
THERE IS A
cod. 3541V120 - Rev 00 - 09/2021
CO measurement and adjustment at maxi-
2
mum heating capacity
• Using contextual button 1
lue to 100%.
• Insert a combustion analysis instrument in the fu-
mes outlet (see fig. 78).
• Check that the CO value corresponds to:
2
9.1 % for Natural Gas
10.5 % for Propane Gas
• If the values do not correspond to those indicated,
adjust the CO with the adjustment screw (see
2
fig. 79), bringing them back to those indicated.
fig. 79- Maximum capacity adjustment screw
Adjusting the CO at minimum heating capa-
2
city
• Using contextual button 2
lue to 0%.
• Insert a combustion analysis instrument in the fu-
mes outlet (see fig. 78).
• Check that the CO value corresponds to:
2
8.5 % for Natural Gas
10.0 % for Propane Gas
• If the values do not correspond to those indicated,
adjust the CO with the OFFSET adjustment screw
2
(see fig. 80), bringing them back to those indica-
ted.
fig. 80- OFFSET minimum capacity adjustment screw
(+) bring the va-
(-) bring the va-
331