Viessmann VITODENS 200-W WB2B Service Instructions For Contractors page 25

Further details regarding the individual steps
System version 1
One heating circuit without mixer A1 (with/without DHW heating)
1 Vitodens 200-W
2 Outside temperature sensor (only
for weather-compensated control
units)
or
Vitotrol 100 (only for constant
temperature control units)
3 Heating circuit pump
Required coding
Commissioning, inspection, maintenance
(cont.)
4 Cylinder primary pump
5 DHW cylinder
6 Cylinder temperature sensor
7 Heating circuit without mixer A1
8 Heating circuit pump A1
9 Low loss header
qP Flow temperature sensor, low loss
header
Address
25