Instruction manual

36
Instructions for the installer
Electrical connections for boilers installed
in a cascade formation
The cable for the connection
between the boiler and the BCM
must have the following
characteristics:
PVC HT CABLE 3x0,5
EBUS UNIT
123
4
5 67891011
12
3
Y2
45
6
7
Y3
123
Jp1
12
3
Y4
4
DL1 DL2 DL3
1
23
Y1
45 6
A1
SW1
BCM
SMG
eBUS - eBUS +
+ 24 V
0
1
2
3
4
5
6
7
8
9
BOILER 1
eBUS +
BOILER 2
BOILER 3
BCM
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
eBUS -
eBUS +
eBUS +
eBUS -
eBUS -
eBUS +
eBUS -
eBUS + eBUS - + 24V
Board selector setting
0
1
2
3
4
5
6
7
8
9
pos.
BCM 0
Boiler 1 (with eBus UNIT) 0
Boiler 2 (Slave) 1
Boiler 3 (Slave) 2
Boiler 4 (Slave) 3
Boiler 5 (Slave) 4
Boiler 6 (Slave) 5
Boiler 7 (Slave) 6
Boiler 8 (Slave) 7
NERO
(*)
(*)
(*)
remove the
bridge between
contacts
IN and OUT
Y1 terminal