
5.8.5.
Connecting a direct circuit and a circuit
with 3-way valve
1
2
2
4
3
5
6
7
2
On
/o
ff
OT
BL
SE
xt
PCU
PCU
SCU
T
S
+
B
A
B
0
-1
0
V
S
AM
B
C
4
3
2
1
2
1
+
-
S
AM
B
B
2
1
S
AM
B
A
2
1
S SYST
+
T
A
-
S ECS
S EXT
S DEP
C
2
1
2
1
2
1
2
1
2
1
S DEP
B
2
1
C003149-F
M
A
Connect a safety thermostat if the heating circuit is for
underfloor heating.
4
Remove the bridge.
4
Connect the wires from the safety thermostat to the
connector.
Z
Do not connect anything to the terminal block
E
Flow sensor (circuit B)
R
Connect the outside temperature sensor.
T
Limiting thermostat - 3WV circuit (circuit B)
Y
Pump - 3WV circuit (circuit B)
U
3-way valve (circuit B)
AFC 18 - AFC 24 - AFC 30
5. Installation
09/07/2015 - 300026439-07
63