Riello P 140P/NA Installation, Use And Maintenance Instructions page 49

Electrical wiring
NOTES
Electrical wiring must be made in accordance with the regulations currently in force in the country of destination and by quali-
fied personnel.
Riello S.p.A. declines all liability for modifications or connections other than those shown on these diagrams.
Use flexible cables according to standard EN 60 335-1:
All the cables to be connected to the burner are fed through the grommets.
The burners have been approved for intermittent operation. This means they should compulsorily be stopped at least once
every 24 hours to enable the control box to perform checks of its own efficiency at start-up. Normally the boiler's limit thermo-
stat pressure switch TL ensures the stopping of the burner. If this is not the case, it is necessary to apply in series with IN a
timer switch that turns off the burner at least once every twenty-four hours.
WARNING:
- Do not invert the neutral with the phase wire in the electricity supply line. Any inversion would cause a lockout
due to firing failure
- Only use original spare parts to replace the components.
Switchboard layout
1
INDEX
2
Index of references
3
Functional diagram
4
Functional diagram
5
Functional diagram
6
Functional diagram
7
Electrical wiring that the installer is responsible for
2
Index of references
2544500
APPENDIX
DIRECT START-UP MODEL
Sheet No.
Coordinates
17 GB
/ 1 . A 1