Riello GAS 9/2, Инструкции по установке, использованию и обслуживанию, Страница: 21 / 24

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Combustion
The optimum calibration of the burner requires
an analysis of the flue gases. Significant differ-
ences with respect to the previous measure-
ments indicate the points where more care
should be exercised during maintenance.
Gas leaks
Make sure that there are no gas leaks on the
pipework between the gas meter and the burner.
Gas filter
Change the gas filter when it is dirty.
Combustion head
Open the burner and make sure that all compo-
nents of the combustion head are in good condi-
tion, not deformed by the high temperatures,
free of impurities from the surroundings and cor-
rectly positioned. If in doubt, disassemble the
elbow fitting 10)(A).
Fan
Check that dust has not accumulated inside the
fan and on the impeller blades: this will reduce
air delivery and, as a result, give rise to dirty
combustion.
Burner
Check that the screws that secure the cables in
the terminal strip of the burner are tight.
Clean the outside of the burner.
Combustion
Adjust the burner if the combustion values found
at the beginning of the operation do not comply
with the regulations in force, or at any rate, do
not correspond to good combustion. Use the
appropriate card to record the new combustion
values; they will be useful for subsequent con-
trols.
OPENING THE BURNER
- Remove the screws 7) which secure the fan to
the sleeve 13).
- Open the burner by moving rear unit A back-
wards on the two slide bars 6). Front unit re-
mains secured to the boiler.
NOTE:
Before opening long head burner (574), fit the
two extensions supplied as standard equipment
with the system on slide bars 6)(A) and support
the burner on the wheel-mounted stand supplied
as an extra unit, fig. (G) page 4.
IF THE ELECTRICAL SUP-
PLY OF THE GAS VALVES
OCCURS AT UNEXPECTED
TIMES, DO NOT OPEN MAN-
UAL GAS BALL VALVE,
SWITCH OFF POWER LINE;
CHECK THE WIRES; COR-
RECT THE ERRORS AND RE-
PEAT THE COMPLETE TEST.
Disconnect the electrical sup-
ply from the burner.
When fitting the burner on the
two slide bars, it is advisable to
gently draw out the high tension
cable and flame detection
probe cable until they are
slightly stretched.
WARNING
OPENING THE BURNER
(A)
D3514
DANGER
WARNING