Connecting Sensors; Power Supply - Viessmann VITOTRONIC 100 GC1B Installation And Service Instructions Manual

Installation Sequence

Connecting Sensors

Power Supply

Legend
L: Line
N: Neutral
G: Ground
A Power supply 120VAC, 1PH, 60Hz, provide
disconnect means and over current protection
as per local codes
B Terminals N, G and 11 (in junction box)
C Junction box
54
Vitotronic 100, GC1B Installation and Service
Main PCB, low voltage
§ Boiler water temperature sensor
%A DHW tank temperature sensor
%B DHW tank temperature sensor 2 for primary store
system (optional accessory, not used)
) Supply temperature sensor, low loss header
(accessory)
aG Flue gas temperature sensor (accessory)
aJA Therm-Control temperature sensor
or
Return temperature sensor T1 (supplied with VD2
and VD2A - optional accessory for CT3)
aJB Temperature sensor T2 (accessory)
or
Temperature sensor primary store system (optional
accessory, not used)
1. Ensure that the main power supply to the control
contains over current protection with a minimum
rating of 12A and 2-pole disconnect.
WARNING
The control must be grounded.
Ensure that "L", "N" and "G" are not interchanged.
2. Connect power supply wire to the connection fÖ
terminals 11, N and G on the DIN rail inside the
junction box.