Supplementary, Programmable Control Box Functions; Post-Purging Function (T6); Continuous Purging Function; Long Pre-Purging Operation(T7) - Riello G23 RBLU Instrucciones Para La Instalación, Uso Y Mantenimiento

4.10

SUPPLEMENTARY, PROGRAMMABLE CONTROL BOX FUNCTIONS

4.10.1 POST-PURGING FUNCTION (t6)

Post-purging is a function that keeps air purging on even after the burner switches off. The burner switches
off when the limit thermostat (TL) opens, consequently cutting off the fuel supply to the valves. To use this
function the reset button must be pressed when the limit thermostat is not switched over (burner switched
off).
Post-purging time can be set to a maximum of 6 minutes, proceeding as follows:
Press and hold the reset button for at least 5 seconds till the LED indicator changes to red.
Set the desired time by pressing the button the appropriate times: once = post-purging for 1 minute.
After 5 seconds the control box automatically shows the minutes set by the red LED blinking: 1 led pulse =
post-purging for 1 minute.
To reset this function, press and hold the button for at least 5 seconds at least, till the LED indicator changes to red
then release it without carrying out any operation, then wait for 20 seconds for the burner to start again.
If during post-purging there is a new request for heat, post-purging time is halted and a new burner operating cy-
cle starts when the limit thermostat (TL) switches.
If during post-purging there is an extraneous light the burner blocks after thirty seconds.
The control box's factory settings are as follows: 0 minutes = no post-purging.
4.10.2 CONTINUOUS PURGING FUNCTION, (only for applications in which this is provided for)
Continuous purging is an operation that maintains the air purging regardless of whether there is a request for the
burner to turn on or not. From the moment it is set, the motor keeps running whether the limit thermostat (TL) has not
been switched (burner off), or when the burner is blocked.
Only when the limit thermostat (TL) is switched does the motor stop for the standby time of four seconds (stand-
by position = t2 + t1).
The function can be set from the reset button when the limit thermostat (TL) is not switched (burner off), by
following the procedure in the post-purging function paragraph 4.10.1 by pressing the button 7 times =
continuous purging.
To reset this function, press and hold the button for at least 5 seconds at least, till the LED indicator changes to red
then release it without carrying out any operation, then wait for 20 seconds for the burner to start again.
If when the limit thermostat (TL) switches, there is an extraneous light the motor stops as long as the extrane-
ous light is there followed by the block.
The control box's factory settings are as follows: 0 minutes = no continuous post-purging.
4.10.3 LONG PRE-PURGING (t7) OPERATION
The long pre-purging makes it possible too lengthen the purging of the air by the switching of the limit ther-
mostat (TL) on the ignition of the flame for up to two minutes. The function can be set from the reset button
when the limit thermostat (TL) is not switched (burner off), by following the procedure in the post-purging
function paragraph 4.10.1 by pressing the button 8 times = long pre-purging.
To reset this function, press and hold the button for at least 5 seconds at least, till the LED indicator changes to
red then release it without carrying out any operation, then wait for 20 seconds for the burner to start again. The
control box's factory settings are as follows: 0 minutes = no long pre-purging.

4.10.4 FUNCTION SETTING PROCEDURE USING RESET BUTTON

Function
control box
Reset
Visual diagnostics of lockout causes
(5.1)
Post-purging (4.10.1)
Continuous purging (4.10.2)(only for
applications provided for).
Long pre-purging (4.10.3)
Resetting set functions
Resetting operating parameters
3221
Pressing the reset
button
1 to 2 seconds
3 seconds
5 seconds then press
once = 1 minute
5 seconds then press
7 times = continuous purging
5 seconds then press
8 times = long pre-purging
5 seconds
5 seconds
15 GB
Possible reset button
use status
After control box lockout
After control box lockout
W i t h l i m i t t h e r m o s t a t ( T L ) n o t
switched (burner off)
W i t h l i m i t t h e r m o s t a t ( T L ) n o t
switched (burner off)
W i t h l i m i t t h e r m o s t a t ( T L ) n o t
switched (burner off)
W i t h l i m i t t h e r m o s t a t ( T L ) n o t
switched (burner off) With limit thermostat (TL) switched
during pre-purging