Riello 908T4 - Switching off the Burner; Load Controller Inputs; Final Checks (with Burner Operating)

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20160576
GB
Start-up, calibration and operation of the burner
7.8 Switching off the burner
Press the switch “ON/OFF” switch to “OFF” (Fig. 163 on
page 50).
Disable the electrical supply. If the burner is off for long periods,
close the manual gas gates.
7.9 Load controller inputs
Selecting the default output analogue source/phases input
with 3 positions (P654)
The following input signals can be selected and managed using
the parameter P654.
• 3 positions phase input (ASZxx.3x feedback potentiometer
necessary/depending on the sequence of the program)
• 0...10 V
• 0...135 
• 0...20mA
• 4...20 mA with lockout at I <4 mA (AZL2...: Loc: 60)
NOTE:
For the connections, see the wiring diagrams.
7.10 Final checks (with burner operating)
Tab. Q
WARNING
Press the switch “ON/OFF” switch to “OFF” posi-
tion during the burner post-ventilation phase, the
equipment shuts down after a few seconds (ER-
ROR LOC:83).
 Open the thermostat/pressure switch TL
 Open the thermostat/pressure switch TS

The burner must stop
 Turn the gas maximum pressure switch knob to the mini-
mum end of scale position (where present)

The burner must stop in lockout
 Turn off the burner and cut off the power
 Disconnect the minimum gas pressure switch connector

The burner must not start
 Disconnect the wire of the ionisation probe

The burner performs the ignition cycle again
WARNING
Make sure that the mechanical locking systems
on the various adjustment devices are fully tight-
ened.