Viessmann Vitodens 333 Service Instructions Manual page 33

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 natural gas (as delivered condition)
or
Operation with LPG
System with only one heating circuit with mixer and DHW heating
Initial start-up, inspection, maintenance
(cont.)
B Extension kit for one heating cir-
cuit with mixer
C Vitotronic 050
D Maximum thermostat (underfloor
heating)
82:0
82:1
00:4
33