161
S1
Rotary switch
TS1
%
A Top cylinder temperature sensor
TS2
%
B Bottom cylinder temperature sensor
TS3
No function
TS4
aJ
System return temperature sensor
TS5
No function
X...
Electrical interfaces
dÖ
A
3-way valve stepper motor
dÖ
B
3-way valve stepper motor
fÖ
Power supply
fÖ
A
Mains voltage output
jF
PlusBus
A
To heat management unit gas condensing
module (plug
aBH
)
B
To heat management unit gas condensing
module (plug
jF
)
C
PlusBus accessories
D
Fuel cell 3-way valve
E
Gas condensing boiler 3-way valve
Connection and wiring diagram
Electronics module M2IO connection scheme…
(cont.)
5853335
Appendix