Installation Instructions

63
D
Vitotrol 100 type RT or on-site
room temperature controller
(switched 230 V input)
E
Vitotrol 100 type UTDB or on-site
room temperature controller
(switched 230 V input)
F
Mains input 230 V/50 Hz
G
Remote control (OpenTherm
device)
H
Outside temperature sensor
(accessory)
K
Time switch (accessory)
L
Gas pressure switch (acces-
sory)
M
PCB inside the control unit
X ... Electrical interface
§
Boiler water temperature sensor
$
Outlet temperature sensor (gas
condensing combi boiler)
%
Gas condensing boiler:
■ In the case of DHW cylinders
from Viessmann: Cylinder tem-
perature sensor
■ In the case of alternative DHW
cylinders compliant with the G3
Directive:
Cylinder demand junction box
(for connection of a 230 V cyl-
inder temperature controller
and a 2-way shut-off valve)
aG
Flue gas temperature sensor
sÖ
Circulation pump 230 V~
dG
Gas solenoid valve
fJ
Temperature limiter
a-Ö
Fan motor 230 V~
a-ÖA
Fan control
aVL
Flow sensor
Designs
Connection and wiring diagram
(cont.)
5609 059 GB
Service