Viessmann Vitotronic 200 Installation And Service Instructions Manual page 33

Connecting a three-phase burner
A Control unit
(legend see page 104)
B Main contactor (on site)
C Three-phase burner
D Three-phase burner power sup-
ply
E Main contactor control
F Safety chain (STB), zero volt
G Control chain stage 1/base load
H Burner fault message
K Hours run counter stage 1
L Base load/full load
Installation sequence
(cont.)
fÖ Control unit power supply con-
nection
fA Burner, stage 1
lÖ Burner, stage 2
aBÖ Plug for external connections
a External safety equipment;
remove jumper when con-
necting
aBA Safety chain, zero volt,
remove jumper when making this
connection
33