INSTALLATION INSTRUCTIONS
TA05A140.A0307
42
heating
sensor
safety
thermostat
Part replacement
:
6.6.2
Ignition and/or flame detection electrodes
(see fig. 1)
•
Un-Plug the electrode wires;
•
Slacken the fixing screws;
•
Remove the electrodes. When fitting the new ones,
check that the seals are not damaged. Replace if
necessary;
•
Reconnect the wires and re-assemble the
components following the above procedure in
reverse order;
•
Switch on the power supply and restart the
appliance;
If the boiler does not restart, check the positions
of the electrodes (especially the ignition
electrode). Make sure that original position and
distances between the electrodes and the burner
are respected to avoid a boiler malfunction).
6.6.3 Safety thermostat
(see fig. 2)
•
Disconnect the connecting wire;
•
Unscrew the fixing screws and remove the
thermostat;
•
Replace the thermostat and re-assemble the
components following the above procedure in
reverse order;
•
Switch on the electricity, water and gas supplies
and restart the appliance.
6.6.4 Heating sensor
(see fig. 2)
•
Un-Plug the connecting wire;
•
Replace the sensor and re-assemble the
components following the above procedure in
reverse order;
•
Switch on the electricity, water and gas supplies,
open the shut-off valves and fill the central heating
circuit. Then restart the appliance, remembering to
discharge any air that may be trapped in the system;
Fig. 1
ionisation
electrode
ignition
electrode
Fig. 2
Summary of Contents for RK 25
Page 2: ......
