Burner Adjustment; Combustion Head - Riello RX 180 S/PV Instructions D'installation, D'utilisation Et D'entretien

(A)
OPTIMUM CALIBRATION VALUES
MIN output
CO (%) O
2 2
METHANE 8
LPG 9.5
MAX output
(%) CO (%) O (%)
2 2
6.6 8.5 5.7
6.4 10 5.6

BURNER ADJUSTMENT

To achieve optimal burner adjustment, the flue
gases produced by combustion must be ana-
lysed as they leave the generator. In conformity
with Efficiency Directive 92/42/EEC, the burner
must be applied to the generator, adjusted and
tested in compliance with the instruction manual
of the generator in question, including checking
of CO and CO
their temperature.
Check in this order:
- MAX output;
D9714
- MIN output;
- firing output.
The maximum output must correspond with the
the output required by the boiler used.
To increase or decrease its value, adjust trim-
mer MAX on the control box (Fig. 9).
Measure the gas delivery on the contactor to
precisely establish the burnt output.
Using a smoke analyser measure the value of
the CO
burner calibration.
The correct values are: CO
To correct these values act on the gas valve in
the following way:
- to increase the gas delivery and the CO
the screw V1 in anticlockwise direction
(unscrew);
- to reduce the gas delivery and the CO
turn the screw V1 in a clockwise direction
(screw up).
The minimum output must correspond with the
the output required by the boiler used.
To increase or decrease its value, adjust trim-
mer MIN on the control box (Fig. 9).
Measure the gas delivery on the contactor to
precisely establish the burnt output.
Using a smoke analyser, measure the value of
the CO
burner calibration. The correct values are: CO
7.8 - 8.5%. To correct these values act on thee
gas valve in the following way:
- to increase the gas delivery and the CO
turn the screw V2 in a clockwise direction
(screw up);
- to reduce the gas delivery and the CO
the screw V2 in an anticlockwise direction
(unscrew).
Firing power is inside area A highlighted inside
the operating range (A, page 4).
To increase or decrease its value, adjust trim-
mer START on the control box (Fig. 9).
COMBUSTION HEAD (A)
The combustion head comprises a highly heat
resistant cylinder whose surface features nu-
merous holes, encased in a metal "mesh". The
air-gas mixture is pushed inside the cylinder and
out of the head through the holes in the perime-
ter. Combustion starts when the air-gas mixture
is ignited by a spark generated by the electrode.
The metal "mesh" is the combustion head's
most essential element since it improves burner
performance considerably.
The flame developed on the surface of the head
is perfectly retained and adheres to the mesh
when operating at the maximum setting. This al-
lows modulating ratios as high as 6:1, avoiding
the danger of flashback when modulating is at
its minimum. The flame features an extremely
compact geometry, meaning that there is no risk
of contact between the flame and parts of the
boiler, consequently eliminating the possible
problem of poor combustion. The flame's struc-
ture means that smaller combustion chambers
can be developed, designed to exploit this par-
ticular feature.
10
concentration in flue gases and
2
or the O in order to optimise the
2 2
8.2 - 9%.
2
or the O in order to optimise the
2 2
: turn
2
:
2
2
:
2
: turn
2