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Circuit Voltages - Biasi M275V.2024 SM Service Manual

Wall hung, fanflue, roomsealed, high efficiency gas boiler
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3 .2 Circuit voltages

Electrical voltages or frequency
with burner on
Supply network
Figure 3 .2
DIAGRAMS
Pump
Fan
during c.h. or d.h.w. operation
only during c.h. operation only
during d.h.w. operation
Gas valve
D.h.w.
Flow switch
Main circuit
pressure switch
Safety
thermostat
- 9 -

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