Spheros Thermo S 160, Workshop Manual

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3 Assemblies and components Thermo S 160/230/300/350/400
302
3.1 Burner
The burner consists of components
t
Burner motor
t
Combustion air fan
t
Fuel pump with solenoid valve and atomiser nozzle
t
Electronic ignition unit with ignition electrode
t
Nozzle block preheater, optional
t Control unit with flame detector
t Disc with inspection glass
t Adapter wiring harness as interface to the
temperature sensor system
3.1.1 Combustion air fan
The combustion air fan transports the air required for
combustion from the combustion air intake to the
combustion chamber.
The combustion air fan consists of burner motor, fan and
motor cross member. Air is drawn in through the air intake
opening in the hood. The air intake opening is equipped
with a splashguard, a protective screen and a hot air
elbow.
Two different motors are assigned to the different heating
capacity classes of the Thermo S series. The respective
heating capacity classes are indicated on the motor. In
addition the motors are differentiated by colour.
t 16 kW - 30 KW: Motor housing
colour: silver
t 35 kW - 40 KW: Motor housing
colour: black
3.1.2 Fuel pump
The fuel pump is responsible for fuel supply.
The pump is driven by the burner motor via a coupling.
Fuel is compressed in the fuel pump to approx. 10 bar and
atomised via the atomiser nozzle.
The solenoid valve integrated into the fuel pump opens
and closes the fuel supply to the atomiser nozzle.
Three different fuel pumps are assigned to the different
heating capacity classes of the Thermo S series.
These are identified by the heating capacity class
specification as well as colour dots:
t
16 KW: 1 colour dot
t
23-35 KW: 2 colour dots
t
40 KW: 3 colour dots
Burner motor
Fan
Shaft
circlip
Motor cross member
Coupling with
magnets
Nozzle block
preheater (optional)
Solenoid valve
Fuel pump
Screen
O-ring
Colour dots for
identification
of the heating
capacity class