Viessmann C3TB, Installation And Service Instructions For Contractors

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31
!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
Electrical connections
Vitotronic 200
5
40
96
20
35
100
2
1
145
2
1
3
2
1
5
4
B
L
N
28
M 1~
145
LON
A
L
N
1
Fig. 28
A
LON connection, process controller
B
Radio clock receiver
Connections to 230 V~ plugs
sK
DHW circulation pump or heating circuit pump for
heating circuit without mixer
Note
Connect DHW circulation pumps with standalone
functions directly to the 230 V
∼
supply.
lH
External demand/blocking
Connections to LV plugs
X3 Plug X3 can be pulled to make assembly easier.
!
Outside temperature sensor
? Flow temperature sensor for low loss header
(accessories)
B Radio clock receiver
Installation sequence
Opening the control unit enclosure on the gas…
(cont.)
5775 636 GB
Installation