Hitecsa ADISA ADI CD 105, Technical Manual Of Installation, Use And Maintenance

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ADI CD Boiler – Technical Manual
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Front view of the boiler inside (model ADI CD 250 and larger models):
Disconnect the electric connections and the pressure pipes:
(a) Pressure pipe connecting the gas valve to the venturi (just included in models starting from ADI CD
250).
(c) Motor fan: electric supply connection (in the higher part of the motor).
(d) Motor fan: control indicator PWM
(e) Ionization-ignition kit: ionization electrode cap, ignition electrode cap and ground connection cable.
(f) Gas valve: electric supply connection.
Note: (a) has fast connections (by pressing the plastic ring you can
remove the pipe).
Remove the ionization-ignition kit.
If the gas connection has a two-pieces coupling, disconnect it.
Disconnect the two flanges of the gas valve (each flange has Allen screws
of 4 mm).
Remove the nuts/screws of the flange connecting the fan-burner group to
the
boiler heat exchanger.
By rotating the assembly motor-fan, you will find:
-
Two gaskets between the boiler heat exchanger and the burner flange
-
Burner flange
-
Gasket between the burner flange and the fan plate
-
Fan plate.
Consider the minimum free height between the highest level of the boiler and the ceiling in order to
extract/rotate the burner (see paragraph “boilers room”).
Note: in models ADI CD 325 to ADI CD 750 the fan-burner assembly is rotating forward;
in models ADI CD 850 and ADI CD 950, the fan-burner group is rotating backward.
(a)
(c, d)
(e)
(f)