Pre-Calibration Of The Combustion Head (Only For The Model Rs 130/E Mz) - Riello RS 70/E MZ Installation, Use And Maintenance Instructions

Installation
4
Securing the burner to the boiler
Before fixing the burner to the boiler, check from the opening of the blast tube that the probe and the electrode are correctly positioned,
as in Fig. 12.
If, in the previous check, the position of the probe or electrode was not correct, remove the screw 1)(Fig. 13), extract the inner part
2)(Fig. 13) of the head, and adjust them.
Do not rotate the probe: leave it as in Fig. 12; if it is located too close to the ignition electrode, the control box amplifier may be damaged.
Probe
Fig. 12
Separate the combustion head from the rest of the burner, Fig. 11.
To do this, proceed as follows:
loosen the 4 screws 3) and remove the hood 1);
remove the screws 2) from the two guides 5);
disconnect the plug 14), unscrew the grommet 15);
disconnect the socket from the maximum gas pressure switch;
remove the two screws 4);
pull back the burner on the guides 5) by about 100 mm;
disconnect the probe and electrode leads, then unthread the
burner completely from the guides.
Before fixing the burner to the boiler, check (for the model RS 130/E MZ) if its maximum output is included in area A or B of the firing rate.
See Fig. 3.
If it is in area A, no intervention is required.
If it is in area B, it is necessary to pre-calibrate the combustion head, as described in Ch. 4.6.
Once this operation has been carried out, fix the flange 9)(Fig. 11) to the boiler plate, interposing the insulating gasket 8)(Fig. 11) sup-
plied.
Use the 4 screws supplied, with a tightening torque of 35 - 40 Nm, after protecting their thread with anti-seize products.
The seal between burner and boiler must be airtight. After the start-up (see Ch. 5.8), check there is no leakage of flue gases into the
external environment.
4.6

Pre-calibration of the combustion head (only for the model RS 130/E MZ)

See Fig. 14.
Unscrew screws 1) and dismantle the
blast tube 2).
CAUTION
Move the fixing point of the rod 3) from
position A to position B, thereby moving
the shutter 4 backwards).
Reassemble the blast tube 2) and the
screws 1).
14
GB
D1209
Electrode
D738
D7951
Fig. 13
Fig. 14