Burner Flame Goes Out During Operation; Stopping Of The Burner; Measuring The Flame Signal; Final Checks (With Burner Operating) - Riello RLS 68/E MX Installation, Use And Maintenance Instructions

6.15

Burner flame goes out during operation

If the flame accidentally goes out during operation, the control
box carries out a recycle (i.e. it repeats the start-up phase once,
and makes a further ignition attempt).
6.16

Stopping of the burner

The burner can be stopped by:
 intervening on the disconnecting switch of the electrical sup-
ply line, located on the boiler panel;
 position selector "OFF/ON" (Fig. 5 on page 12) to "OFF" (0);
6.17

Measuring the flame signal

The burner is fitted with a sensor to check that a flame is present.
The minimum current for control box operation is 70 µA. The op-
erator Panel displays "30%" (see List of parameters, parameter
954).
The burner provides a much higher current, so controls are not
normally required.
If, however, you want to measure the current of the flame sensor,
follow the instructions as described in "Maintenance pro-
gramme" on page 54.
6.18

Final checks (with burner operating)

 Open the thermostat/pressure switch TL
 Open the thermostat/pressure switch TS
 Turn the gas maximum pressure switch knob to the mini-
mum end of scale position
 Turn the air pressure switch to the maximum end of scale
position
 Turn the oil maximum pressure switch knob to the mini-
mum end of scale position
 Turn off the burner and cut off the power
 Disconnect the minimum gas pressure switch connector
 Turn the oil minimum pressure switch knob to the maxi-
mum end of scale position
 Obscure the flame sensor
Make sure that the mechanical locking systems
on the various adjustment devices are fully tight-
ened.
WARNING WARNING
Start-up, calibration and operation of the burner
If the flame is still absent, the control box goes into lockout.
 removing the transparent protection that covers the Operator
Panel (after loosening the relative screw), and intervening
on the Panel itself as explained in the "Manual lockout pro-
cedure.
S8171

The burner must stop

The burner must stop in lockout

The burner must not start

the burner must stop in lockout due to flame loss
53 GB
P
V h min s %
Fig. 51
Tab. U
20121288