Viessmann VITOTRONIC 100 GC1B Operations Instructions Page 92

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92
Installation
Connecting a three−phase burner  zero volt safety chain
!
Please note
A jumper in the burner may possibly have to be removed from the
external conductor to the control voltage.
Observe the details of the burner supplier.
A Control unit
(legend see page161)
B Main contactor (on site)
C Three−phase burner
D Three−phase burner supply
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
Control unit power supply
fA Burner, stage 1
Burner, stage 2
aBÖ Plug for external connections
a external safety equipment
*1
aBA Safety chain, zero volt
*1
*1
Remove jumper when making this
connection.
5862730GB
F
TR
K1
F2
a
A
B
D
C
G
L
H
K
E
T6 T7 T8
ON
ON
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