Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 51

Further details regarding the individual steps
System version 3
One heating circuit without mixer A1 and one heating circuit with mixer M2
Note
The flow rate of the heating circuit without mixer must be at least 30 % greater
than the flow rate of the heating circuit with mixer.
! Outside temperature sensor
? Flow temperature sensor
sÖ Heating circuit pump
aVG KM BUS
aBH Power supply (extension kit)
A Solar collectors
B Collector temperature sensor
C DHW circulation pump
D DHW
Commissioning, inspection, maintenance
(cont.)
E Cold water
F High limit thermostat (underfloor
heating)
G Underfloor heating circuit
H Heating circuit
K Extension kit for a heating circuit
with mixer
L Vitodens
M Vitotrol 200 or 300
51