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4.4.3
FM3 and FM5 functional modules
If the FM3 and FM5 functional modules are installed in a system, each additional installed FM3 functional module adds two
mixed heating circuits to the system.
The potential configuration (FM3+FM5) corresponds to a defined terminal assignment for the FM3 (→ Section 4.6) functional
module.
4.5
Connection assignment for the FM5 functional module
1
2
1
2
1
2
1
2
1
S1
S2
S3
S4
S5
230V
230V
R1
N
L
N
L
N
L
5
1
Input sensor terminals
2
Signal terminals
3
eBUS terminal
When connecting, pay attention to the polarity!
S6 to S11 sensor terminals: An external control can also be connected
S12, S13 signal terminals: I = input, O = output
R7/8, R9/10, R11/12 mixer output: 1 = open, 2 = closed
You can configure the contacts for external inputs in the system control.
–
Open, deact.: Contacts open, no heat demand
–
Bridge,deact.: Contacts closed, no heat demand
Configur-
R1
R2
ation
1
3f1
3f2
2
3f1
3f2
3
3f1
3f2
6
3f1
3f2
Configur-
S1
S2
ation
1
SysFlow
FS1
2
SysFlow
FS1
3
SysFlow
FS1
82
1
1
2
2
1
2
1
2
1
2
1
2
1
2
O
S6
S7
S8
S9
S10
S11
S12
R2
R3
R4
R5
R6
N
L
N
L
N
L
N
L
N
L
4
R3
R4
9gSolar
MO
3f3
MO
3f3
MO
3f3
MO
S3
S4
S5
FS2
DHW
DHW
Bt2
FS2
FS3
DHW
FS2
FS3
BufBt
2
I
O
I
S13
R7/8
R9/10
R11/12
R13
N 1 2
N 1 2
N 1 2
N
N
4
Output relay terminals
5
Power supply
R5
R6
R7/R8
3j
3c/9e
9k1op/
9k1cl
3j
3c/9e
9k1op/
9k1cl
–
3c/9e
9k1op/
9k1cl
9gSolar
3c/9e
9k1op/
9k1cl
S6
S7
S8
DHWBt
COL
Solar
yield
DHWBt
COL
Solar
yield
DEM1
DEM2
DEM3
Operating and installation instructions 0020287900_03
3
-
+
BUS
O
I
O
I
S12
S13
R7/8
R9/10
R11/12
N 1 2
N 1 2
N 1 2
R9/R10
R11/R12
–
9k2op/
9k2cl
9k2op/
9k3op/
9k2cl
9k3cl
9k2op/
9k3op/
9k2cl
9k3cl
9k2op/
9k3op/
9k2cl
9k3cl
S9
S10
S11
DEM2
TD1
TD2
–
TD1
TD2
–
–
DHW
R13
–
–
–
–
S12
S13
–
PWM
–
PWM
–
–
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