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ovERALL INfoRMATIoN
1
ovERALL INfoRMATIoN
1.1 overall view
figure 1.1
D.h.w.
heat exchanger
Expansion
vessel
Condensate
trap
Ignition
electrodes
Gas valve
Control
panel
Automatic
air purger
valve
Pump
Condensing
heat exchanger
Gas restrictor
Transformer
D.h.w. Flow
Switch
Spark
Generator
C.h. pressure
relief valve
Safety thermal
fuse
Fan
Safety
thermostat
Burner
D.h.w. temp.
probe
Detection
electrode
Diverter valve
Main circuit
flow switch
Flue temperature
probe NTC
C.h. temp.
probe
Air box
Condensing heat
exchanger air
purger valve
Air hose
Codensate
trap
1.2 Hydraulic diagram
figure 1.2
Central heating (c.h.) operation
Domestic hot water (d.h.w.) operation
C.h.
water flow
C.h.
water return
D.h.w.
inlet
D.h.w.
outlet