Itho Daalderop HRU ECO 350, Руководство по установке

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d) Turn the front door with bayonet lock one quarter turn anti-
clockwise and remove the front door.
g) Remove the exchanger by pulling the clamping band
out of the ventilation unit.
This is done with some friction. Therefore, stop the housing
so that the ventilation unit remains against the wall. Wear
the exchanger on the clamping band and not on the grey
surfaces.
e) Remove the front plate.
f) Loosen the two nuts of the clasp at the bottom about 1.5
cm, but in such a way that the nut remains on the bolt.
h) Disconnect the electric cable from the bypass/frost valve motor.
The connector is located near the supply fan (top).
i) Slide the motor module out of the ventilation unit, holding
the rest of the housing so that the ventilation unit remains
against the wall.