Viessmann Vitocal 300-G Installation And Service Instructions For Contractors page 26

Preparing for installation
Primary circuit, type WW + BWS (two-stage)
Well pump on-site connection 400 V
sYYA
X1.
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X2.N
X1.
?
X2.N
X3.1
X2.N
26
2
.
sXVS
.
(cont.)
L1 L2 L3
K1 K2
K3
200 W
M
UP
qT
1~
200 W
M
UP
wT
1~
?
I>I>I>
M
UP
3~
wZ