Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 50

Preparing for installation
System example 1
2
1 1
aVG
2 2
3
50
(cont.)
8
aVG
on
1
2
aVG
off
3
on
1
2 off
aVG
3
1
2
aVG
3
1 2 3 4
1 2
3 4
rU
145
L L
?
?
N
N
S1
GND
S2
GND
S4
GND
R1
?
N
R4
?
N
uQ
q-Q
230 V/50 Hz
S1
rR
S2
eQ
S4
zT
STB
rQ
M M
1~ 1~
UP
rE
STB
zU
M M
1~ 1~
UP
zZ