3 .3 Circuit voltages
Electrical voltages with burner on
Figure 3 .3
- 10 -
Pump
Gas valve
Supply network
DIAGRAMS
during C.H. or D.H.W. operation
only during C.H. operation
only during D.H.W. operation
3 way
diverter valve
Fan
Main circuit
pressure switch
D.H.W.
Flow switch
Safety
thermostat