302
Thermo E+ 120/200/320 3 Assemblies and components
3.1 Burner
The burner consists of the components
• combustion air fan
• control device with flame guard
• fuel pump with solenoid valve
• fuel nozzle
• electronic ignition unit
•disc
• nozzle block preheater (optional)
3.1.1 Combustion air fan
The combustion air fan transports the air required for
combustion from the combustion air intake to the combus-
tion chamber.
The combustion air fan consists of the burner motor and
the fan wheel. Air is drawn in through the air intake
opening in the hood. This air intake opening is equipped
with a splashguard, a protective grid or an intake air
elbow.
To the three different heating capacity classes of the
Thermo E+ series in the versions for 12V and 24V opera-
ting voltage different motors are assigned. This assign-
ment is clearly beyond the material number. The motors
must not be interchanged.
NOTE:
The positioning of the motor to the housing is safely
defined by a pin and a hole (see Fig. 803).
Fig. 302 Combustion air fan
Fan wheel
Burner motor
(transparent shown)
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