Viessmann VITODENS 242-F Installation And Service Instructions Manual page 75

Further details regarding the individual steps
System version 3
One heating circuit without mixer A1 and one heating circuit with mixer M2
wQ
wP
1 Vitodens 242-F
2 Outside temperature sensor
3 Heating circuit without mixer A1
4 Heating circuit with mixer M2
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.
Commissioning, inspection, maintenance
3
2
1
6 Flow temperature sensor M2
7 Heating circuit pump M2
8 Extension kit for one heating circuit
with mixer M2
wP Solar collectors
wQ Collector temperature sensor
(cont.)
4
5
6
7
M
8
75