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21 Flame detection electrode/ignition
electrode
22 3 bar safety valve
23 Automatic bleed valve
24 Pump
25 Pump bleed cap
26 Gas valve
27 Gas valve outlet tapping point
28 Modulating operator
29 Gas valve inlet tapping point
30 DHW NTC probe
31 Control panel containing:
Terminal board for external temperature
probe, low-voltage ambient thermostat
cable or remote control (optional), elec-
tric power supply cable
32 Heating pressure switch
33 DHW exchanger
34 Three-way valve
35 Three-way valve plug
36 Fan
37 Flue gas pressure switch
38 Venturi
39 Combustion chamber
40 Burner
41 DHW flowmeter
42 Expansion tank
43 Domestic hot water filter
44 DHW flow rate limiter (optional)
45 Flue gas exhaust duct
46 Air suction duct
47 Venturi vacuum check points
48 Integrated by-pass
* To access the Data plate, remove the front
panel from the body as described in the
Maintenance section.
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TECHNICAL SPECIFICATIONS
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