3 .2 Circuit voltages
Electrical voltages or frequency
with burner on
Supply network
Figure 3 .2
DIAGRAMS
3 way
diverter valve
Pump
Fan
during C.H. or D.H.W. operation
only during C.H. operation
only during D.H.W. operation
Safety
D.H.W.
thermostat
Flow switch
Main circuit
pressure switch
Gas valve
- 9 -