Viessmann VITODENS 100-W Installation And Service Instructions Manual page 50

Designs
Connection and wiring diagram
C
Vitotrol 100, type RT or on-site
room temperature controller
(switched 230 V input)
D
Vitotrol 100, type UTD or on-site
room temperature controller
(switched 230 V input)
E
Power supply 230 V/50 Hz
F Open Therm connection (remote
control, if installed)
G Outside temperature sensor
(accessory)
H Time switch (accessory)
K
Gas pressure switch (acces-
sory)
50
(cont.)
L
PCB inside the control unit
X ... Electrical interface
§ Boiler water temperature sensor
%
Terminal box cylinder demand
(accessory)
aG Flue gas temperature sensor
aJ Return temperature sensor
sÖ Circulation pump
dD Flow limiter
dG
Gas solenoid valve
fJ Temperature limiter
a-Ö Fan motor 230 V~
a-ÖA Fan control