Riello RLS 800/E MX, Installation, Use And Maintenance Instructions

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31 20010309 GB
Start-up, calibration and operation of the burner
6.9 Operation sequence of the burner
6.9.1 Burner starting
Key to layout (Fig. 39 and Fig. 40)
MV - Fan motor
MP - Pump motor
SM - Servomotor
TA - Ignition transformer
TL - Limit pressure switch/thermostat
TR - Control pressure switch/thermostat or output regulator
Y
- Light oil/gas valve
YP - Pilot valve
6.9.2 Undesired shutdown during operation
If the flame should accidentally go out during operation, the burn-
er will lock out within 1s.
To check the full operating programme, refer to the LMV instru-
ment reference handbook, supplied during the technical service
training.
6.10 Final checks (with the burner working)

Open the thermostat/pressure switch TL:

Open the thermostat/pressure switch TS:
the burner must stop.

Rotate the maximum gas pressure switch knob to the mini-
mum end-of-scale position.

Rotate the air pressure switch knob to the maximum end-of-
scale position.
the burner must stop in lockout.

Switch off the burner and disconnect the voltage.

Disconnect the minimum gas pressure switch connector.
the burner must not start

Disconnect the QRI flame sensor wire.
the burner must stop in lockout due to firing failure

Make sure that the mechanical locking systems on the differ-
ent adjustment devices are fully tightened.
TL
TR
MV
SM
Y
MP
TA
YP
Fig. 39
NORMAL FIRING
D9335
TL
TR
MV
SM
Y
MP
TA
YP
Fig. 40
NO FIRING
D9336