Re-Cycle Function; Post-Ventilation Function; Control Box Reset; Maintenance - Riello Gulliver RS5D Instrucciones De Instalación, Montaje Y Funcionamiento

4.8 RE-CYCLE FUNCTION

The control box allows re-cycling, i.e. the complete repetition of the starting programme, for 3 attempts maxi-
mum, in the event the flame goes out during operation.

4.9 POST-VENTILATION FUNCTION

Post-ventilation is a function that maintains air ventilation even after the burner is switched off. The burner
switches off when the limit thermostat (TL) opens, 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-ventilation time can be set to a maximum of 6 minutes. Proceed as follows:
➤ Press and hold the reset button for at least 5 seconds till the LED indicator changes to red.
➤ Set the desired time pressing the button repeatedly: once = post-ventilation for 1 minute.
After 5 seconds the control box automatically shows the minutes set by the red LED flashing:
➤
1 pulse = post-ventilation 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.
If during post-ventilation there is a new request for heat, post-ventilation time is halted and a new operating
cycle starts when the limit thermostat (TL) switches over.
The control box leaves the factory with the following setting: 0 minutes = no post-ventilation.

4.10 CONTROL BOX RESET

To carry out the control box reset, proceed as follows:
➤ Press the reset button for at least 1 second.
In the event of the burner not restarting it is necessary to check if the limit thermostat (TL) is closed.
5.

MAINTENANCE

Disconnect the electric supply to the burner by switching off the main power switch and close the
gas shut-off valve before maintaining or checking the system.
The burner requires scheduled maintenance that must be carried out by qualified personnel and in compli-
ance with local legislation.
Scheduled maintenance is vital for the smooth operation of the burner; it avoids waste of fuel and reduces
harmful emissions into the atmosphere.
THE FUNDAMENTAL OPERATIONS TO CARRY OUT ARE AS
FOLLOWS:
➤ Check at regular intervals that the holes of the gas head are
not obstructed. If they are, clean them with a suitable tool as shown in the figure 12.
➤ Check there are no occlusions or obstructions in the inlet or
return pipes, in the air suction areas and in the combustion
product waste pipe.
➤ Check that the burner and gas train electrical connections are
correct.
➤ Check that the positioning of the air pressure test point (9, fig. 9,
page 9) is correct.
Check that the gas train is suited to the burner capacity, the type
➤
of gas used and the network gas pressure.
➤ Check that the positioning of the combustion head is correct
and that it is properly fixed to the boiler.
➤ Check that the air damper is positioned correctly.
➤ Check that the ionisation probe and the electrode are positioned correctly (see fig. 11, page 11).
3087
12 GB
Fig. 12
E9252