System Version 3 - Viessmann Vitotronic 200 KW2 Installation And Service Instructions Manual

Heating system designs

System version 3

One direct connected heating circuit without mixer and one mixer circuit
B
A Boiler with Vitotronic 200
B DHW cylinder
C KM BUS user or
KM BUS distributor, (only with
several KM BUS users)
D Mixer circuit M2
E Heating circuit without mixer A1
F Check valve; only required, if
joined to a connector.
Plug
!
Outside temperature sensor
?
Flow temperature sensor
(accessory)
§
Boiler temperature sensor
%
Cylinder temperature sensor
Automatic changeover
00: 6 with DHW cylinder
*1
e.g. for underfloor heating control via flow and return temperature sensor.
8
E
A1
C
M2
A
aJ
Return temperature sensor
(accessory)
sÖ A1 Heating circuit pump
(accessory)
sÖ M2 Heating circuit pump mixer
circuit (accessory)
sA
Cylinder primary pump
(accessory)
sK
DHW circulation pump (on site)
fÖ
Mains power connection
(230 V/50 Hz)
fA
Burner stage 1
gS
Mixer motor (accessory)
lÖ
Burner stage 2/mod.
aVG
KM BUS user/distributor
(accessory)
a:A
Two−stage/mod. burner
extension
D
M
F
*1