Viessmann Vitodens 100-W Installation And Service Instructions Manual page 55

Connection and wiring diagram
Vitotrol 100, type RT or on-site
C
room temperature controller
(switched 230 V input)
Vitotrol 100, type UTD or on-site
D
room temperature controller
(switched 230 V input)
Power supply 230 V/50 Hz
E
OpenTherm connection (remote
F
control, if installed)
Outside temperature sensor
G
(accessories)
Time switch (accessories)
H
Gas pressure switch (accesso-
K
ries)
(cont.)
PCB inside the control unit
L
X ... Electrical interface
Boiler water temperature sensor
§
Cylinder demand terminal box
%
(accessories)
Flue gas temperature sensor
aG
Return temperature sensor
aJ
Circulation pump
sÖ
Flow switch
dD
Gas solenoid valve
dG
Temperature limiter
fJ
Fan motor 230 V~
a-Ö
a-ÖA Fan control
Designs
55