Inserting Cables/Leads And Applying Strain Relief - Viessmann Vitotronic 100 Installation And Service Instructions Manual

Electrical connections
Overview of electrical connections
Connections on the low voltage PCB
Plug
!
§
%
)
aG
aVG
a:A
Connections on the 230 V~ PCB
Plug
sÖ
sA
fÖ
fA
lH
X12

Inserting cables/leads and applying strain relief

Seal unnecessary apertures in the control unit base
with cable grommets (not cut out).
Cable with cast-on cable entry
2.
Fig. 10
16
(cont.)
Component
No function
Boiler water temperature sensor
Cylinder temperature sensor
Buffer temperature sensor if the heating circuit is connected to a heating water
buffer cylinder
Flue gas temperature sensor
KM-BUS subscriber (accessories), e.g. EA1 extension
2-stage/modulating burner extension (part of the standard boiler delivery)
Component
Heating circuit pump, heating circuit A1
or
Boiler circuit pump if the heating circuit is connected to a heating water buffer
cylinder
Circulation pump for cylinder heating (accessories)
Power supply
Burner
Mains connection for accessories
■
Vitotrol 100
■
or
External demand/external blocking
■
External burner start, stage 1
3.
1.