Unigas PBY1025 Manual Of Installation - Use - Maintenance page 46

Progressive, fully-modulating heavy oil burners
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ELECTRICAL WIRING DIAGRAMS / SCHEMI ELETTRICI
Electric supply connections must be arranged in order to ensure the burner stops if IRxx switcesh are open. When the three phase power supply is interrupted, the auxiliary (single phase) power supply must be interrupted
as well.
WARNING:
1 - Power supply 400V 50Hz 3N AC with neutral
2 - Don't reverse phase with neutral
3 - Ensure the burner is properly earthed
Si raccomanda di eseguire i collegamenti esterni di alimentazione in modo tale che un'eventuale apertura degli interruttori IRx provochi l'arresto del bruciatore interrompendone l'alimentazione monofase.
ATTENZIONE:
1 - Alimentazione elettrica 400V 50Hz + Neutro
2 - Non invertire fase con neutro
3 - Assicurare una buona messa a terra del bruciatore

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