Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 52

Installation sequence
Terminal connections
3-way diverter valve in sub-mounting kit
4 3 2 J 4 3 2 M
L PE N
EX2 EX1
QX3
B
X200
A 3-way diverter valve
B Plug on plug-in strip X200 in the
control unit
52
(cont.)
A
4 3 2 F 4 3 2 Z
L PE N
QX4
QX2
Connection to the control unit
See separate installation instruc-
tions.
L