How To Access To The Electric Box - Ferroli OMNIA ST 3.2 Manual De Instalación, Uso Y Mantenimiento

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OMNIA ST 3.2

7.6.2 How to access to the electric box

1. To dismount the front panel of the indoor unit:
Partially unscrew the screws A (see "fig. 15 - front panel dismounting").
Pull the panel B out and release it from the upper fixings (see "fig. 15 - front panel dismounting").
2. Make the connections referring to the functional electrical diagram present in this manual.
3. Proceed in reverse order to reassemble the front panel. Make sure that it is correctly attached to the upper fixing and completely resting on the side panels. The
head of the screw "A", once tightened, must not be underneath the lower bending stop (see "fig. 16 - upper screws mounting")..
fig. 15 - front panel dismounting
1
1
A
fig. 17 - view without front panel
To access to the terminals of the indoor unit unscrew the two screws (part. 1 - fig. 17) under the electrical box, then catch the electric box, and unlock (fig. 18), then
rotate forward (fig. 19). Remove the back metal sheet (part. 3 - fig. 19) that is fixed with 4 screws (part. 4 - fig. 19).
Legend:
A
Display panel and keyboard (fig. 17)
B
Electronic hydronic board (fig. 20)
C
Safaty thermal cut-out for single phase electrical heater with manual reset button (part. C1 fig. 20)
D
Safaty thermal cut-out for three phase electrical heater with manual reset button (part. D1 fig. 20)
OK
fig. 18 - how to unlock the electric box
B
C1
D1
D
fig. 20 - internal view of the electric box
Cod. 3541V991 - Rev. 00 - 09/2021
fig. 16 - upper screws mounting
4
fig. 19 - how to rotate the electric box
C
NO
3
99
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