
5.8.6.
Connecting a direct heating circuit and a
domestic hot water tank
n
Connecting a direct heating circuit and a type HL or
SHL DHW tank
On
/o
ff
OT
BL
SE
xt
PCU
DHW
X20
X4
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
C003288-F
1
5
6
3
3
2
4
7
8
9
10
11
3
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
Plate exchanger outlet sensor
E
Do not connect anything to the terminal block.
R
Secondary domestic hot water load pump
AFC 18 - AFC 24 - AFC 30
5. Installation
09/07/2015 - 300026439-07
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