Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 164

Designs
Connection and wiring scheme
Junction box, sensors and accessories
B
A
A Cylinder temperature sensor B3
B Outside temperature sensor
C Buffer temperature sensor B42 or
common flow sensor B10 (common
flow temperature sensor)
D Wireless transmitter
E Extension kit for heating circuit with
mixer
164
C
D
(cont.)
E
6
K
F Extension kit 2 and 3 for heating cir-
cuit with mixer
G Buffer temperature sensor B41
H Buffer temperature sensor B4
K Vitotwin 300-W control unit
F
G
H