Viessmann VITODENS 111-W Installation And Service Instructions Manual page 16

Installation sequence
Electrical connections
X21
X7
X20
C
4 3 2 1
OT
A B
A Only for weather-compensated
mode:
Outside temperature sensor (acces-
sory)
B OpenTherm device
Remove jumper D when making
this connection.
C Connecting cable (accessory)
D Jumper
Accessory connection
Accessory installation instruc-
tions
When connecting a Vitotrol 100 or an
OpenTherm remote control, remove the
jumper across L and 1.
16
(cont.)
E Power supply (230 V, 50 Hz).
See page 17.
F Vitotrol 100
Remove jumper D when making
this connection.
Outside temperature sensor (acces-
sory)
1. Fit outside temperature sensor.
Installation site:
■ North or north-westerly wall, 2 to
2.5 m above ground level; in multi
storey buildings, in the upper half of
the second floor
■ Not above windows, doors or ven-
tilation outlets
D
X1
L N 1 L N
?
E F
Separate installation instruc-
tions