Opening The Burner; Closing The Burner - Riello RS 55/M BLU Installation, Use And Maintenance Instructions

Burner
Check for excess wear or loose screws in the mechanisms con-
trolling the air damper and the gas butterfly valve. Also make sure
that the screws securing the electrical leads in the burner connec-
tions are fully tightened.
Clean the outside of the burner, taking special care with the artic-
ulated couplings and cam 4)(Fig. 28 on page 24).
Fan
Check to make sure that no dust has accumulated inside the fan
or on its blades, as this condition will cause a reduction in the air
flow rate and provoke polluting combustion.
Boiler
Clean the boiler as indicated in its accompanying instructions in
order to maintain all the original combustion characteristics in-
tact, especially the flue gas temperature and combustion cham-
ber pressure.
7.3

Opening the burner

Disconnect the electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel interception tap.
DANGER
Wait for the components in contact with heat
sources to cool down completely.
 Remove screw 1) and take out cover 2).
 Disengage the articulated coupling 3) from the graduated
sector 4).
 Remove the screw 5) and split pin 9) and pull back the
burner on the guides 6) by about 100 mm. Disconnect the
cables of the probe and electrode, then pull the burner back
completely.
 Turn it as indicated in the diagram, and insert the split pin 9)
into the hole of one of the two guides so that the burner
remains in that position.
Now extract the gas distributor 7) after having removed the screw 8).
7.4

Closing the burner

 Remove the split pin 9) and push the burner until it is approx.
100 mm from the pipe coupling.
 Reconnect the cables and slide in the burner until it comes
to a stop.
 Reposition the screw 5) and split pin 9) and carefully pull the
probe and electrode cables outwards until they are slightly
taut;
 Re-couple the articulated coupling 3) to the graduated sec-
tor 4).
20040559
Maintenance
Combustion
If the combustion values found at the start of the intervention do
not satisfy current standards or anyway indicate a poor state of
combustion (consult the table below), contact the Technical As-
sistance Service for the necessary adjustments.
NOTE:
It is advisable to set the burner according to the type of gas used
and following the indications of Tab. I.
EN 676
Theoretical
max. CO
GAS
0 % O
G 20 11,7
G 25 11.5
Carry out all maintenance work and mount the
casing again.
30 GB
Air excess
Max. output
  1.2
Calibration
CO %
2
2
2  = 1.2  = 1.3
9.7 9.0
9.5 8.8
Min. output
  1.3
CO
mg/kWh
 100
 100
Tab. I
D535
Fig. 37