Viessmann VITODENS 333 Service Instructions Manual page 29

Further details regarding the individual steps
Required coding
Operation with LPG
System design 3
With one heating circuit without mixer A1 and one heating circuit with
mixer M2
Note
The volume flow of the heating circuit without mixer must be at least 30 %
greater than the volume flow of the heating circuit with mixer.
!
Outside temperature sensor
?
Flow temperature sensor
sÖ
Heating circuit pump
lH
Mains supply (extension kit)
aVG KM BUS
Required coding
Operation with natural gas (as delivered condition)
or
Initial start-up, inspection, maintenance
(cont.)
A
Maximum temperature controller
(underfloor heating)
B
Extension kit for one heating cir-
cuit with mixer
Address
1E:1
Address
1E:0
29