Overview Of Electrical Connections - Viessmann VITOTRONIC 200 Installation And Service Instructions Manual

Overview of electrical connections

Danger
Incorrect wiring can lead to serious injury from
electrical current and result in appliance dam-
age.
■ Route LV leads < 42 V and cables
42 V/120 V~/230 V~ separately.
>
Only strip the minimum of insulation from
■
cables, as close to the terminals as possible,
and bundle tightly to the corresponding termi-
nals.
■ Secure cables with cable ties.
When connecting external switching contacts and
■
on-site components, observe the insulation require-
ments of IEC/EN 60335-1.
A
N L 1 L N
41
N L 1 L N
230 V~ 230 V~
fÖ
lH
Fig.11
MCB/fuse
A
Coding card slot
B
Connections on the low voltage PCB
Plug
!
§
%
)
aG
aVG
a:A
PCB connections 230 V~
Plug
sÖ
sA
sK
fÖ
L N L N L N
M M M
1~ 1~ 1~
sÖ sA
sK
Component
Outside temperature sensor/radio clock receiver (accessories)
Boiler water temperature sensor
Cylinder temperature sensor
Buffer temperature sensor (accessories)
Flue gas temperature sensor (accessories)
KM BUS subscriber (accessories), e.g. EA1 extension
Two-stage/modulating burner extension (part of the standard boiler delivery)
Component
Heating circuit pump A1 for heating circuit 1
Circulation pump for cylinder heating (DHW cylinder accessory)
DHW circulation pump
Power supply
!
Please note
Electronic assemblies can be damaged by static
loads.
Prior to commencing work, touch an earthed
object such as a heating or water pipe to dis-
charge static load.
For opening the control unit, see page 9.
191
) aG % §
Electrical connections
B
! Q aVG
15