Viessmann Vitodens 333 Service Instructions Manual page 31

Further details regarding the individual steps
System version 5
One heating circuit with mixer M2 (with extension kit), one heating circuit
with mixer (with the Vitotronic 050) and low loss header
!
Outside temperature sensor
?
Flow temperature sensor
sÖ
Heating circuit pump
lH
Power supply (extension kit)
aVG KM BUS
A
Low loss header
Required coding
Operation with LPG
System with only one heating circuit with mixer and DHW heating
Initial start-up, inspection, maintenance
(cont.)
B
Extension kit for a heating circuit
with mixer
C
Vitotronic 050
D
Maximum temperature thermo-
stat (underfloor heating)
1E:1
00:4
31