Operation Sequence Of The Burner; Burner Starting; Undesired Shutdown During Operation; Final Checks (With The Burner Working) - Riello RLS 800/E MX Installation, Use And Maintenance Instructions

6.9

Operation sequence of the burner

6.9.1

Burner starting

NORMAL FIRING
TL
TR
M V
M P
TA
YP
Y
SM
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
6.10

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.
Start-up, calibration and operation of the burner
Fig. 39
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.
TL
TR
M V
M P
TA
YP
Y
SM
D9335
31 GB
NO FIRING
D9336
Fig. 40
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