Provisional Burner Operation - Viessmann Vitotronic 100 Installation And Service Instructions Manual

Connecting the pumps
400 V~ pumps
Rated current for switching the contactor: 4(2) A~
L1 L2 L3 N PE
N L
C
B
M
A
3~
Fig. 15
Pump
A
To the control unit
B
Contactor
C
External burner start
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection must be potential-
free.
A
1 2
X12
Fig. 16
External starting (floating contact)
A

Provisional burner operation

Insert jumper across terminals 1 and 2 of plug "X12".
1 2
X12
Fig. 17
(cont.)
If the contact is closed, burner stage 1 is switched on
and the boiler water temperature is limited by the tem-
perature controller.
Rated voltage
Rated current
Burner stage 1 is switched on. The boiler water tem-
perature is limited by the temperature controller.
Electrical connections
230 V~
6 A~
19