Tecno-gaz ONYX B 7.0 Manual Tecnico página 103

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PHASE 5: SECOND PREHEATING (HEATING 2)
When EV4 is closed, the preheating phase with the working of the heating element
(positioned around the chamber) starts.
EV2 EV3 EV4 EV5 EV6 EV7
OFF OFF OFF ON OFF OFF
The produced heat generates steam production inside the chamber, with consequent
raise of the pressure, up to the value of + 0.3 bar.
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