AH-New
condensing air handling unit
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54
code HG0310.05GB ed.A-2010
AH
55
code HG0310.05GB ed.A-2010
AH
HG0131.00 A
013
Air orifice plate
6.12. Conversion to gas G2.350
Conversion is allowed only for Poland.
Conversion from one type of gas to another can only be performed
by authorised service centres.
Conversion to G2.350 consists in:
•
for all models: pilot nozzle replacement.
•
only for models PCH065: mounting a calibrated orifice
plate on the air intake of the Venturi pipe [see Paragraph
6.7 "GAS Settings Table"].
After the conversion, relight the burner and:
•
check that the intake pressure to the gas valve corresponds
to the level required for the type of gas [see Paragraph 6.7
"GAS Settings Table"];
•
check that the level of CO
2
, at maximum and minimum heat
output, is between the values indicated for the type of gas.
If the value is different, change it by turning the adjustment
screw on the Venturi pipe: screwing it down decreases the
value, loosening it increases the value.
Stick the nameplate "Equipment converted for gas G2.350...."
in place of the one that says "Equipment set up for ......".
NOTE: The minimum and maximum heat outputs of
models PCH065, PCH130 and PCH132 are lower with
respect to the operation with G20. Models PCH080,
PCH105, PCH160, PCH162, PCH210, PCH212, PCH320,
PCH420 are not suitable for operation with gas G2.350.
NOTE: The conversion kit is supplied on request
6.13. Replacing the Gas Valve
If the gas valve must be replaced, it is required to proceed with
an inspection and possibly calibrate the CO
2
level through the
adjustment on the Venturi pipe.
It is advisable not to calibrate the offset: the valve calibration is
performed by the manufacturer.
If necessary, carry out the combustion analysis procedure as
described in Paragraph 6.9 "Analysis of combustion".
It is recommended to always carry out the flue gas analysis
after replacing the gas valve.
