1
Overall information
1.1
Overall View
Automatic
air release
valve
Main heat
exchanger
Safety
thermostat probe
Ignition
electrodes
Burner
Detection
electrode
Gas valve
Diverter valve
D.h.w. temp
probe
Main circuit
flow switch
Control
panel
fig. 1
1.2
Hydraulic diagram
Central hetaing (c/h) operation
C/h
C/h
water supply
water return
fig. 2
Air pressure
Combustion
heat exchanger
D.h.w. temp.
ignition device
Front view
Fan
switch
chamber
D.h.w.
Pump
D.h.w.
inlet
probe
Full seq.
C/h
return
Domestic hot water (d.h.w.) operation
D.h.w.
inlet
Rear view
D.h.w.
outlet
Expansion
vessel
D.h.w.
outlet
C/h
flow
Gas inlet
1