Viessmann Vitoligno 300-C Installation And Service Instructions Manual page 168

Connection and wiring diagram
PCB HKK 2.01
(cont.)
System-specific slot assignment:
"System examples"
Fig. 95
Connection to ZPK and KSK PCBs
s-Ö
HC 1: Pump, heating circuit 1
dYÖ
HC 1: Valve, heating circuit 1
dYA
dXÖ HC 2: Pump, heating circuit 2
or
TWE: Cylinder loading pump (circulation pump for
cylinder heating)
HC 2: Valve, heating circuit 2
dXA
or
UP: Circulation pump DHW cylinder transfer of
heat (Y1)
or
ZP: DHW circulation pump (Y2)
or
(UP and ZP)
Rated relay output breaking capacity at 230 V
Assignment
Pump outputs , ,
dYÖ dXÖ
Valve outputs , ,
dYA dXA dCA
Observe full rated breaking capacity:
Max. 4 A ∼
168
∼
dCÖ
HC 3: Pump, heating circuit 3
dCÖ
or
TWE: Cylinder loading pump (circulation pump for
cylinder heating)
or
SOL: Solar circuit pump
HC 3: Valve, heating circuit 3
dCA
or
SOL: Diverter valve, solar
or
UP: Circulation pump DHW cylinder transfer of
heat (Y1)
or
ZP: DHW circulation pump (Y2)
or
(UP and ZP)
Rated breaking capacity
∼
4 A
∼
1 A