Ariston Thermo MGM 2-ZONE HOT/COLD, Installation And Operating Instructions Manual

Page: 33 / 90

EN - 33
ANODE
SE TNK
BUS
TA 1 TA 2
B T
IN
AUX 1 +24V
MOD. BUS
GND A+ B-
WARNING
Carry out the electrical connections after having completed all the hydraulic con-
nections. Before performing any work on the boiler, first disconnect it from the
electrical power supply using the external bipolar switch.
Electrical hookup
b
A1
AUX1 S1 S2 S3 S4 BUS BUS
B T B T
A1
AUX1 S1 S2 S3 S4 BUS BUS
B T B T
Kit BUS terminal board
Kit BUS terminal board
Low voltage terminal board
Internal heat pump unit
Low voltage terminal board
Hybrid internal unit
ANODE
SE TNK
BUS
TA 1 TA 2
RS 485
1+ 2- B T
IN
AUX 1 +24V
To access the kit’s terminal board, proceed
as follows:
- remove the module’s front panel,
- remove the control unit cover by loosen-
ing the two front screws (b),
- connect the BridgNet® BUS connector
and check the polarity of the connection:
T with T, B with B.