Riello RX 90 S/PV Installation, Use And Maintenance Instructions page 29

4.11 FUNCTION SETTING PROCEDURE USING RESET BUTTON
Control box function
Reset
Vi s u a l d i a g n o s t i c s o f l o c k o u t
causes (5.1)
Post-purging (4.9)
Resetting set functions
Resetting operation parameters
4.12 CONTROL BOX RESET (USING BUILT-IN BUTTON)
To reset the control box, proceed as follows:
®
Hold the reset button down for between 1 and 2 seconds.
If the burner does not restart, you must make sure the limit thermostat ( TL ) is closed.
Warning:
If you hold the reset button down for more than 2 seconds, the control box enters visual diagnostics mode
and the indicator LED starts flashing (see paragraph 5.1, page 13).
To reset the control box, you must press the reset button again.
4.13 CONTROL BOX RESET (VIA REMOTE CONNECTION)
Socket XP7 has an input B4 provided for the control box's remote resetting.
5. MAINTENANCE
Before cleaning or performing checks, switch off the burner's power supply with the system's master
switch and close the gas shutoff valve.
The burner requires scheduled maintenance, which must be carried out by qualified personnel in conformity
with local regulations and laws.
Scheduled maintenance is vital for the smooth operation of the burner: it avoids waste of fuel and reduces
pollutant emissions into the atmosphere.
FUNDAMENTAL OPERATIONS TO BE CARRIED OUT ARE AS FOLLOWS:
®
Make sure the air intake areas and ducts taking the flue gases away do not feature any obstructions or
restrictions.
® Electrical connections
Check that the burner and gas train electrical connections are correct.
Gas leaks
®
Make sure there are no gas leaks in the following areas:
- on the meter-burner pipework
- on the mixer/valve connection
- on the burner fastening flange where the seal is fitted.
Combustion head
®
Inspect the combustion head and make sure the fabric is undamaged and does not features large or deep
holes or corroded areas. Also make sure that no parts have warped as a result of high temperature.
Electrode unit
®
Make sure neither the electrodes nor probe feature marked warping or oxidation on surfaces. Make sure
distances are still in line with those indicated in fig. 4, readjusting to the right values where necessary. Where
necessary, remove oxide from the surface of the probe with abrasive paper.
3342
Action with reset
button
1 to 2 seconds
3 seconds
5 seconds then press
once = 1 minute
5 seconds
5 seconds
12 GB
Reset button in
enabled status
After control box lockout
After control box lockout
With limit thermostat (TL) not
switched (burner off)
With limit thermostat ( TL ) not
switched (burner off)
With limit thermostat (TL) switched
during pre-purging