Electrical Connections - Viessmann VITODENS 242-F Installation And Service Instructions Manual

Installation sequence

Electrical connections

!
Please note
Electronic assemblies can be
damaged by electrostatic dis-
charge.
2
145
2 1 5 4
145
A Radio clock receiver
Connections to 230 V~ plug
fÖ Power supply
lH ■ Power supply for accessories
■ External demand/blocking
30
A
1
3 2 1 100 35
Before beginning work, touch
earthed objects, such as heating
or water pipes, to discharge static
loads.
96
230V~ 230V~
L
N L 1
B
21 20 96
B Jumper
Connections to LV plug
X3 Plug X3 can be removed to facili-
tate installation.
! Outside temperature sensor
? Flow temperature sensor for
low loss header (accessories)
A Radio clock receiver
aVG KM BUS subscriber (accessories)
40
N
40