Viessmann Vitotronic 200 Installation And Service Instructions For Contractors page 18

Electrical connections
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 separately.
Only strip the minimum of insulation from
■
cables as close as possible to the terminals
and bundle tightly to the corresponding termi-
nals.
■ Secure cables with cable ties.
52 M2 20 M2
2
52 M3 20 M3 2 M3
A
Fig. 9
Extension for heating circuits 2 and 3, each with
A
mixer (accessories)
B PCB, low voltage
PCB 230 V~
C
Extension connections for heating circuits 2 and 3, each with mixer
A
Plug
M2/M3
?
sÖ M2/M3
M2/M3
gS
B Connections on the low voltage PCB
Plug
!
§
%A
%B
/
) ?
aG
18
42 V/230 V~
>
D E
145 3 5 B 17
M2
72 145 1 5 A 17 A
B
Component
Heating circuit flow temperature sensor
Heating circuit pump
Mixer motor, mixer extension kit
Component
Outside temperature sensor
Boiler water temperature sensor
One of the following temperature sensors:
Cylinder temperature sensor
■
Top cylinder temperature sensor in a cylinder loading system
■
Cylinder temperature sensor (bottom) in a cylinder loading system
The following temperature sensors:
Temperature sensor, low loss header
■
Buffer temperature sensor
■
Flue gas temperature sensor
When connecting external switching contacts and on-
site components, observe the insulation requirements
of IEC/EN 60335-1.
!
Please note
Electronic assemblies can be damaged by elec-
trostatic loads.
Before beginning work, touch an earthed object
such as a heating or water pipe to discharge any
static.
F
B 9/2 146
15 143
52 A1
28 21
LON communication module (accessories): See
D
page 13.
E Programming unit connection: See page 21.
Coding card: See page 13.
F
151
20 A1
29 50 40 156 156 156 150
C
90
41