Viessmann Vitotronic SPS Service Instructions Manual page 66

PCBs and connection options
Expansion PCB
(cont.)
Connection
Digital OUT X22
Digital OUT X23
Analogue OUT/IN
X24
Analogue IN X25
66
Terminal Address
1 DI 8
3 DI 9
5 DI 10
7 DI 11
1 DI 12
3 DI 13
5 DI 14
7 DI 15
1 AO 0
3 AO 1
5 AI 0
7 AI 1
1 AI 2
3 AI 3
5 AI 4
7 AI 5
Pos. no. Type
A B C
X X
X
X X
X
103 X X
X
203 X X
X
303 X X
X
X
X
X
2 X X X
X X X
52 X X
X
101 X X
X
201 X X
X
301 X X
X
31 X X
X
52 X X
X
Explanation
Diverter valve 2, coolant
EVD1 DI1 cooling, compressor 1,
small
Diverter valve natural cooling to cool-
ant
EVD1 DI2 exp. CC1
Diverter valve cooling, cooling circuit
1
EVD2 DI1 cooling, compressor 2,
small
Diverter valve cooling, cooling circuit
2
EVD2 DI1 exp. CC2
Diverter valve cooling, cooling circuit
3
EVD3 DI2 cooling, compressor 1,
large
EVD3 DI2 ECO CC1
EVD4 DI2 cooling, compressor 2,
large
EVD4 DI2 ECO CC2
Output demand, external heating
Speed control, circulation pump,
DHW cylinder heating
Heating water buffer cylinder temper-
ature, bottom
Inlet temperature, condenser 2
Heating circuit 1 flow temperature
Outlet temperature, condenser 2
Heating circuit 2 flow temperature
Output demand
Heating circuit 3 flow temperature
External heating
DHW cylinder temperature, top
Oil temperature, compressor 1
DHW cylinder temperature, bottom
Oil temperature, compressor 2