2.2 Expansion modules
2.2.1 Heating circuit module
Two heating circuits can be controlled as standard with the core module.
To add further heating circuits, the heating circuit module boards must be expanded. Expansion can include up
to eight heating circuit modules (address 0 to 7). A total of up to 18 heating circuits can be controlled. It is
important to ensure that the module address is set correctly.
⇨ See "Setting the module address" [page 35]
N
N
L
L
HE-09
(Heizkreispumpe 1)
HE-08
(Netz)
HE-01
HE-02
(2x Bus)
HE-03
(V
orlauf
fühler 1)
HE-04
(V
orlauf
fühler 2)
HE-05
(Raumfühler 1)
HE-06
(Raumfühler 2)
HE-07
(Fühler 1)
HE-10
(Heizkreispumpe 2)
HE-1
1
(Mischer 1)
HE-12
(Mischer 2)
N
L
N
ZU
AUF
N
ZU
AUF
FRHEM19
Heating circuit module
Module address
End jumper
Mains fuse
Connection / Name
Note
HE-01
BUS
Connection with cable – LIYCY paired 2x2x0.5;
⇨ See "Connecting the bus cable" [page 34]
Caution! CAN L and CAN H must not be connected to +U
BUS
!
HE-02
BUS
HE-03
Flow temperature sensor 1 Connection cable
1)
2 x 0.75 mm
2
;
HE-04
Flow temperature sensor 2
HE-05
Room temperature sensor 1 Connection cable
1)
2 x 0.75 mm
2
, shielded from 25 m cable length
HE-06
Room temperature sensor 2
HE-07
Sensor 1
Connection cable
1)
2 x 0.75 mm
2
;
Connection of the outside temperature sensor if this is not to be connected to
the core module. The address of the heating circuit module to which the outside
temperature sensor is connected must be set in the “Heating – General settings”
menu.
HE-08
Mains
Connection cable
1)
3 x 1.5 mm
2
, fuse 10A
HE-09
Heating circuit pump 1
Connection cable
1)
3 x 1.5 mm
2
, max. 2.5A / 230V / 500W
HE-10
Heating circuit pump 2
HE-11
Mixing valve 1
Connection cable
1)
4 x 0.75 mm
2
, max. 0.15A / 230V
HE-12
Mixing valve 2
1.YMM as per ÖVE-K41-5 or H05VV-F as per DIN VDE 0881-5
2
Power connection and wiring
Expansion modules
14
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