Automatic Pre-Heating Deactivation; Post-Purge - Riello RDB2.2R BG Instrucciones De Instalación, Montaje Y Funcionamiento

6.12 Automatic pre-heating deactivation

It is possible to disable the pre-heater function in automatic
mode by pressing the reset button of the control box or the re-
mote reset.
Sequence of pre-heating
deactivation
Allow the disabling of the pre-heating
only when there is no lockout or fault
Allow the disabling of the pre-heating
using the reset button or the remote
reset.
Supply the burner and simultaneous-
ly keep pressed the reset button or
the remote reset for 3 seconds.
Release the reset button or the re-
mote reset within 3 seconds.
The burner will start disabling the pre-
heating only if the reset button or the
remote reset is released within 3 sec-
onds.
6.13

POST-PURGE

Post-purging is a function that allows you to maintain the air purg-
ing even after the burner is switched off in the absence of the heat
request for a pre-set time.
The burner switches off the flame when the heat request thermo-
stat opens, cutting off the fuel supply to the valves.
The post-purge function is not performed:
 after a lockout
 if the heat request is interrupted during pre-purging.
Post-purging occurs:
 if the heat request is interrupted during the safety time;
 if the heat request is interrupted during normal operation.
NOTE:
If during post-purging there is an extraneous light or a para-
site flame the burner goes into lockout after 25 seconds.
If during post-ventilation there is a new heat request, the
post-purging time is halted, the fan motor stops and a new
burner operating cycle starts.
20094184
Start-up, calibration and operation of the burner
Colour of the led
of the button
-
-
RED
OFF
-
Tab. E
When the pre-heating is disabled, the pre-heating remains off
until:
– a lockout occurs
– the main supply voltage is interrupted
– there is a stop due to intermittent operation.
The deactivation of the automatic pre-heating function is not lost
if the switching off test function is active or if the heat request
thermostat opens.
22 GB