Viessmann Vitoligno 300-H Installation And Service Instructions For Contractors page 34

Installation sequence
Electrical connections
Connections
Sensor connections
A
Pump connections B
Mechanical cleaning, electrostatic precipitator
B
Mixer motor connections
Circulation pump connections
DHW circulation pump connections
Solar diverter valve
C
Power supply to electrostatic precipitator
Extension kits (KM-BUS)
Max. 3 extension kits can be connected to the boiler
control unit. Each extension kit must be connected to
the KSK PCB via KM-BUS.
34
(cont.)
for
HK
TWE
SOL
HK
TWE
SOL
Mechanical cleaning
Electrostatic precipita-
tor
(optional)
HK
C
C
UP
C
ZP
C
SOL
Power supply
Electrostatic precipita-
tor
(optional)
Connection numbers on HKK
301, 302, 303
302, 303
303 (collector) + 304 (lower TWE)
310, 320, 330
320, 330
330
330
311, 321, 331
321, 331
(Always connect UP to Y1)
321, 331
(Always connect ZP to Y2)
331
331