Viessmann VITOTRONIC 200 Service Instructions Manual page 156

PCBs and connection options
Main and extension PCB
Operating components 230 V~
2nd
1 2
sXÖ
L1 N
N ?
M
1 2 3 4
sXA sXS
sXÖ Enable compressor control
heat pump stage 2 (connec-
ted on site)
156
(cont.)
U
N L1
sXF
1 2
sXD
N N N
? ?
2nd
2nd
r
2nd
M2
r
N
?
1 2 3 4 5 6 7 1 2 3
sXG
y
y y
a:C] c
N N ? N
? ?
M
2nd
sXS-sXG Operating components
230 V~ (connected on site)
M2
N
?
M
N