Overview Of Electrical Connections, Vitotronic 300-K - Viessmann VITOTRONIC 200 Installation And Service Instructions Manual

Vitotronic 200, HO1B and 300-K, MW2C Installation/Service

Overview of Electrical Connections, Vitotronic 300-K

Legend
PCB, extension for heating circuits 2 and 3
? M2/M3 Supply temperature sensor
sÖ M2/M3 Heating circuit pump
gS M2/M3 Mixing valve motor
Main circuit board, low voltage
Outdoor temperature sensor
!
§/? Supply temperature sensor, common supply
/low loss header
DHW tank temperature sensor
%A
%B DHW tank temperature sensor 2 for tank loading
system (accessory)
Temperature sensor tank loading system
aJB
(accessories)
aVD External hook-ups
KM BUS participant (Vitotronic 200 and
aVG
accessories, e.g. Vitotrol remote controls)
aVH External hook-ups
LON LON BUS, connecting cable for data exchange
with the Vitotronic 200-H and the Vitocom
Main PCB 120V~
sÖA1 Heating circuit pump
or
Primary pump, tank loading system
sA DHW pump
DHW recirculation pump
sK
System pump
sL
fÖ Power supply
Central fault message
gÖ
gSA1 Motor for 3-way mixing valve, tank loading
system
aBH Internal power supply for mixing valve extension
PCB
Electrical connections on the Vitotronic 200
see installation instructions, of the relative
boiler.
Installation Sequence
15