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– Remove the shaped plugs (9) for passing cables (10),
(12) and (13).
– Pass the power cable (10) through the cable grommet
(11).
– Pass the load power cables (12) and (13) through the
cable grommets (14) and (15).
– Put the shaped plugs (9) back on, while making sure
that the opening is completely closed.
10
13
12
M1
1
M1
Signal terminal board
M2
230 V terminal board
AL
Power supply terminal board
1
Signal connections
2
230 V connections
Note: secure the cables inside the appliance using the collars.
36 / EN
Power supply connections
11
AL
1ph
14
15
9
Fig. 65
AL
3ph
1
a
2
Signal connections
Fig. 66
M1
ATG
A
Se
TNK Calorifier sensor connection
Bus
i
AL
Power supply terminal board
Connection to single-phase power supply
AL
Power supply terminal board
Connection to three-phase power supply
Remove the jumper (1) before making the three-phase
connection.
Be careful to make the proper three-phase con-
nection to prevent short-circuits.
M1
ATGBUS
ANODE
SE
GND BUS
+24 V +24 V
ATG A
Se TNK Bus
Signal terminal board
ATG Bus connection between indoor and outdoor units
Anode connection
Outdoor sensor connection
Interface connection (if the user interface is not mount-
ed on the machine)
Make the connections of the TNK sensor and of
the anode in case of the stand-alone calorifier.
Electrical connections
Fig. 67
1
Fig. 68
EBUS 2
TNK
B
T
Fig. 69
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