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This unit consists of the two shafts and the air distribution flap, fixed together by means of two
spring leaves. This assembly is operated either by the motor or by the safety system.
The flap has different openings which, depending on its position, may coincide or not with
openings on the heating element, allowing air passages to be opened or closed in different
ducts.
The flap is held on the heating element by spring leaves. The flap slides on the heating element.
A special coating is applied to the flap. It allows preventing corrosion and limiting friction
between these two parts.
(!) Never apply grease or other lubricants between the flap and the heating element! Mixed
with dust and ashes, these lubricants will have a negative effect on the sliding of the flap.
Temperature sensor
A thermocouple type temperature sensor is bolted above the right side of the heating element.
It allows the main board to monitor the evolution of the temperature of the flue gases to
manage the air distribution flap.
This sensor appears in the form of a washer. It is bolted with an M6 screw (10mm spanner).
This sensor has a very long life span. However, should it be replaced, proceed as follows:
- remove the door, side covers and frame;
- Unscrew the sensor with a 10mm open-end ratchet spanner;
- replace the probe, and reassemble the parts.
External 24VDC power supply
The 24V power supply unit provides the main electronic board with the necessary voltage and
current. Always place this power supply so that it remains accessible. The power supply can also
be placed in a block, but must remain accessible for possible replacement.
(!) Never install the power supply unit in a place that is too hot, or against the appliance (max.
50°C).
Connect a 220VAC power supply to the Wago connections supplied with the unit.
This power supply must be permanent. The standby consumption of the system is 0.4W.
Access to the elements
To access the elements, remove the wicket door (control panel) by pulling the lock to the right.
Then move the door 1 cm to the left to take it off its axis. Next, disconnect the cable from the
control panel.
To remove the fans:
