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33
AST 14 C 257/00
SECTION 4
GAS SETTING AND TSP PARAM ETERS
4.1 GAS VALVE SETTING
Procedure for regulating the gas valve
Check the static mains pressure via the inlet,
referring to the table of settings on page 8
(pressure values lower than required do not
guarantee correct boiler operation).
Operate the ambient thermostat to switch the
heating on.
Remove the cap on the minimum output adjusting
screw C;
Ignite the boiler on chimney-sweep mode (see 4.2).
Insert the flue gas probe in the flue pressure sampling point on the discharge
tower.
Turn the maximum output screw B anticlockwise to increase or clockwise to
decrease the CO
2
percentage, referring to the combustion table at the bottom of
the page.
Press
the
- DHW button to operate the boiler at maximum output (until the display
shows the exact number of fan Hz at minimum speed:: 42 Hz (
24 kW)
, 40 Hz (
28
kW)
and 43 Hz (
32 kW
);
Turn the minimum output screw C clockwise to increase or anticlockwise to
decrease the CO
2
percentage, referring to the combustion table below.
Press
the
+ DHW button to return to maximum output (check the display shows
the exact number of fan Hz at maximum speed: 199 Hz (
24 kW natural gas)
, 192 Hz
(24 kW propane gas)
, 201 Hz
(28 kW natural gas)
, 198 Hz
(28 kW propane gas),
210
Hz
(32 kW natural gas)
e 205 Hz
(32 kW propane gas)
;
Double-check
the
CO
2
percentage and regulate if necessary via screw B.
Press
the
reset button to exit chimney-sweep function.
Disconnect the flue gas probe and put on the caps (gas valve and discharge
tower).
Operate the ambient thermostat to switch the heating off.
CO
2
values
(+/- 0,1%)
24 and 32 kW
28 kW
Min
Max
Min
Max
Natural gas
9.3 9.0 9.3 9.0
Propane gas
10.0
10.0
10.3
10.0
Content of CO in the flue gas <1000 ppm
Содержание FORMENTERA KC 24
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