Instruction manual

33
Instructions for the installer
The BCM (optional kit) board, elaborates the data con-
cerning the thermal drop (Δt between primary flow and
return) and provided power.
When the provided power is reduced, the number of turns
of the pump reduces as well and therefore also the hourly
flow rate, keeping the thermal drop constant.
.
Boiler battery
IThe 0 - 10 Volt modulation signal is reset at:
- 3 Volt for minimum speed
- 10 Volt for maximum speed.
These values can be modified according to the
pump model used. For further information of
the 0 - 10 Volt signal, also refer to the pump
manual.
FIX RATE PUMP
Modulating Pump
12
3
Y2
45
67
Y3
12
3
Jp1
12
3
Y4
4
DL1 DL2 DL3
123
Y1
45 6
A1
SW1
ALLARM SIGNAL
BCM
eBUS - eBUS +
+ 24 V
MAIN SUPPLY
230 V - 50 Hz
N
L1
N
0-10 V terminals
Wilo modulating
pump interface
(-)
(0 - 10 V)
L1
SUPPLY
MODULATION
PUMP
APM
MODULATING PUMP
Pump Connection
FIXED
RATE PUMP
Single Boiler
12 L1 N
MARRONE
MARRONE
BLU
BLU
GIA/VER
GIA/VER
M1
P
- For the fixed flow rate pump connection, place the ca-
bles between pin 1.2 and terminal M1.
12
3
Y2
45
6
7
Y3
12
3
Jp1
12
3
Y4
4
DL1 DL2 DL3
123
Y1
456
A1
SW1
ALLARM
SIGNAL
PUMP
BCM
eBUS -
eBUS +
+ 24 V
MAIN SUPPLY
230 V - 50 Hz
N
L1
N
L1
MAIN SUPPLY
230 V - 50 Hz
P
RELE’
N
L