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

Vitotronic 200 and 300-K Installation and Service

Overview of Electrical Connections, Vitotronic 300-K

With
accessory
module
Legend
PCB, extension for heating circuits 2 and 3 (accessory)
? M2/M3 Supply temperature sensor
sÖ M2/M3 Heating circuit pump
gS M2/M3 Mixing valve motor
Main circuit board, low voltage
Outside temperature sensor
!
§/? Supply temperature sensor, common heating
flow/low loss header
DHW tank temperature sensor
%A
%B DHW tank temperature sensor 2 for primary
store system (accessory)
Temperature sensor primary store 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, primary store system
sA DHW circulation pump
DHW recirculation pump
sK
System pump
sL
fÖ Power supply
Central fault message
gÖ
gSA1 Motor for 3-way mixing valve, primary store
system
aBH Internal power supply for mixing valve extension
PCB
Electrical connections on the Vitotronic 200
see installation instructions, Vitodens 200-W.
Installation Sequence
11