Table of Contents
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1
Overall infOrmatiOn
1 .1 Overall view
Three way diverter valve
Gas restrictor
Main circuit
pressure switch
Electric actuator
D.h.w. temperature probe
figure 1 .1
1 .2 hydraulic diagram
Central heating (c.h.) operation
water return
figure 1 .2
- 4 -
OVERALL INFORMATION
Flue temperature
probe NTC
Condensing
heat exchanger
Safety
thermostat
Ighition
electrodes
Detection
electrode
Burner
Fan
Electronic controlbox
diverter valve
Gas valve
C.h.
C.h.
water flow
Control
Pump
panel
D.h.w.
flow switch
Domestic hot water (d.h.w.) operation
Expansion
vessel
Pipe silencer
Airbox
(air/gasmixer)
D.h.w.heat
exchanger
Condensate
trap
C.h. pressure
relief valve
Automatic air
purger valve
D.h.w.
inlet
D.h.w.
outlet
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