Overview Of Electrical Connections - Viessmann Vitotronic 100 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 separately from cables
42 V/120 V~/208 V~.
>
Only strip the minimum of insulation from
■
cables, as close to the terminals as possible,
and bundle them close to the corresponding
terminals.
■ 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
fÖ lH
N L 1 L N
230 V~
230 V~
1 L
N
3 2 4 6
C
1
L
D
N L 1
E
Fig. 9
Fuse
A
Coding card slot
B
Vitotrol 100, type UTA
C
or
L N L N
191
M M
1~ 1~
sÖ sA ) aG %
!
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.
Opening the control unit
See page 9
B
1
§ aVG
Vitotrol 100, type UTDB
D
or
Vitotrol 100, type UTDB-RF
E
Electrical connections
15