27
Y4
1
2
3
4
1
2
3
1 2 3 4 5 6
Y3
Y2
0 1
2
12 11 10 9 8 7 6 5 4 3 2 1
3
4
5
6
7
8
9
2 3
1
9
8
10 11 12 13 14
5 6
4
7
Jp2
Alarm
signal
+
-
Y4
1
2
3
4
1
2
3
Y3
Y2
12 11 10 9 8 7 6 5 4 3 2 1
Jp2
P.
Coll.
Y4
1
2
3
4
1
2
3
Y3
Y2
12 11 10 9 8 7 6 5 4 3 2 1
Jp2
C
C
A.
p
me
t
S
D
N
G
)-(
mente viene attivato il servizio sani-
tario al momento dell'alimentazione
Se il sensore di temperatura accu-
mulo viene collegato, automatica-
caldaia.
Il par (803)
Srv
(viene automatica-
mente aggiornato)
Instructions for the installer
NOTE:
Th
e boiler is provided with set-up to manage one direct
flo
w and one storage tank.
If
Stemp. ACC
is connected automatically, the DHW
service is enabled, which will be managed as a priority
compared to direct
flo
w through the pumps shown
below.
If other services (storage tanks, mixed zones, solar, etc.) are requested, it is
necessary to purchase
SHC
multifunction modules to connect to the local
bus for total temperature control management via HSCP (and UFLY).
The BCM relay contacts support pumps with max
absorption of 4 A.
P. Coll - Pump Manifold (Primary ring) (Optional)
(Run Signal)
P CH - Heating circuit pump (central heating circuit)
P. Car DHW - Storage tank load pump
Connect the cables as indicated (
Y4 3-4
)
Connect the cables (
Y4 7-8
)
Connection Mod. P. Central Heating Modulating Pump
(Optional)
Connect the cables as indicated (
Y4 1-2
)
Connect the cables as indicated (
Y3 1-2-3
)
Stemp. ACC. Storage Tank Temperature Sensor
If the storage tank temperature sensor
is connected, the DHW is automatically
activated when the boiler is powered.
Th
e code (803)
Srv
(it is automatically
updated)
Connect the modulation control cables as indicated (
Y2 4-5
).
External power supply 230 V-50 Hz.
Connect the temperature sensor cables as indicated (
Y2 6-8
).
Alarm / signals contact (N.O. dry contact)
Ext signal contact 0 - 10 V
