Viessmann VITODENS 333-F WS3A Service Instructions Manual page 30

Commissioning, inspection, maintenance
Further details regarding the individual steps
System version 3
One heating circuit without mixer A1 and one heating circuit with mixer M2
! Outside temperature sensor
? M2 Flow temperature sensor
sÖ M2 Heating circuit pump
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.
Required coding
Operation with LPG
30
(cont.)
A High limit thermostat (under-
floor heating)
B Extension kit for a heating cir-
cuit with mixer
1E:1