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OMNIA SW-T 3.2
7.6.2 How to access to the electric box
1. To dismount the front panel of the indoor unit:
•
•
Pull the panel B out and release it from the upper fixings (see "fig. 16 - front panel dismounting").
2. Make the connections referring to the functional electrical diagram present in this manual.
3.
head of the screw "A", once tightened, must not be underneath the lower bending stop (see "fig. 17 - upper screws mounting")..
fig. 16 - front panel dismounting
B
P
Q
E
A
1
B
E
A
fig. 18 - view without front panel
To access to the terminals of the indoor unit unscrew the two screws (part. 1 - fig. 18) under the electrical
box, then catch the electric box, and unlock (fig. 19), then rotate forward (fig. 20). Remove the back metal
sheet (part. 3 - fig. 20) that is fixed with 4 screws (part. 4 - fig. 20).
Legend:
A
B
C
fig. 21)
D
21)
7.6.3
The terminal block (detail B fig. 18) is located on the left side of the electric box. The terminal block is a
male-female connector strip. There is an identification label of the 6 terminals available on the side of the
terminal block ("Table. 6 - Terminal block table").
7.6.4 Connection of system add-ons
1
fig. 19 - how to unlock the electric box
(TBH)
with manual reset button (part. C1
Cod. 354M000010 - Rev. 03 - 06/2023
fig. 17 - upper screws mounting
fig. 20 - how to rotate the electric box
fig. 21 - internal view of the electric box
Table. 6 - Terminal block table
ID
FUNCTION
TERMINAL
P
Q
Serial Modbus
-
AND
A
B
Serial Modbus
AND
EN
NOTES
For serial connec-
tion to the outdoor
unit
For connection
to the external
monitoring system
(BMS) or remote
control
99
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