2 General Description Thermo Top E and Z/C
202
2.1 Combustion Air Fan Assembly
The combustion air fan assembly includes the
combustion air fan
combustion air line inlet
fuel supply inlet.
The heater Thermo Top E and Z has the circulation pump
mounted on the combustion air fan assembly.
2.1.1 Combustion Air Fan
The combustion air fan delivers the air required for
combustion from the combustion air inlet to the burner
insert.
Combustion Air Fan Assembly
2.2 Burner Housing
The burner housing includes the
coolant inlet
coolant outlet
exhaust outlet.
The burner housing accommodates the burner insert and
is combined with the control unit / heat exchanger to an
assembly.
Burner Housing
2.3 Burner Insert
Inside the burner insert fuel is distributed across the
combustion pipe fuel cross section. Combustion of the
fuel/air mixture takes place within the combustion pipe to
heat the heat exchanger.
The glow plug/flame sensor located in the burner insert
ignites the fuel/air mixture during start of the heater. After
start the glow plug / flame sensor operates in the flame
sensor function. The glow plug / flame sensor designed as
an electrical resistor is located in the burner insert
opposite the flame side.
Burner Insert
Coolant
Coolant
outlet
inlet
Exhaust outlet
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