148
Rated relay output breaking capacity at 230 V
∼
Assignment
Rated breaking capacity
Pump outputs
dYÖ
,
dXÖ
,
dCÖ
4 A
∼
Valve outputs
dYA
,
dXA
,
dCA
1 A
∼
Observe full rated breaking capacity:
Max. 4 A
∼
Note
The slot assignment on this PCB may differ subject to
the system version.
System-specific slot assignment:
"System examples"
Power supply for DHW circulation pump
Connect DHW circulation pumps with standalone func-
tions directly to the 230 V
∼
supply.
Mains connection via the Viessmann control unit or
Viessmann control unit accessories is not permissible.
PCB KSK 2.03
DI
DI
+
M
M
+
+
DI
GND DI
+
GND
0 ...
20mA
0 ...
20mA
AO
GND
0 ...
20mA
0 ...
20mA
AO
GND
5
4
2
3
1
2
1
5
6
3
4
1
2
3
4
1
2
AI
GND
AI
GND
AI
AI
GND
13V
13V
2
1
4
10
Fig. 92
!
Outside temperature sensor
?
*6
Flow temperature sensor
)
Buffer temperature sensors
aG
*6
Flue gas temperature sensor
aJ
*6
Return temperature sensor
sL
*6
Boiler circuit pump
sL
B
*6
Speed, boiler circuit pump
kS
A
*6
Limit switch, heat exchanger cleaning (option)
lJ
*6
Jumper fitted
lK
*6
Jumper fitted
a-Ö
A
*6
Speed feedback, flue gas fan
a-Ö
B
*6
Default speed, flue gas fan
aYÖ
*6
Programming unit ribbon cable
aYA
*6
Not allocated
aYS
*6
Not allocated
aVG
KM-BUS
a:K
*6
Lambda probe
s-D
*6
Primary air damper stepper motor
s-D
A
*6
Primary air damper stepper motor
s-F
*6
Secondary air damper stepper motor
*6
Internally prewired
Connection and wiring diagram
PCB HKK 2.01
(cont.)
5679249
Appendix