Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 67

Further details regarding the individual steps
System version 3
One heating circuit without mixer A1 and one heating circuit with mixer M2
1
1 Vitodens 222-F
2 Outside temperature sensor
3 Heating circuit without mixer A1
(heating circuit 1)
4 Heating circuit with mixer M2 (heat-
ing circuit 2)
5 Temperature limiter to restrict the
maximum temperature of underfloor
heating systems
Note
The flow rate of the heating circuit with-
out mixer must be at least 30 % greater
than the flow rate of the heating circuit
with mixer.
3
5
6
7
2
8
Commissioning, inspection, maintenance
(cont.)
4
M
6 Flow temperature sensor M2
7 Heating circuit pump M2
8 Extension kit for one heating circuit
with mixer M2
67