Viessmann Vitotronic 200 Installation And Service Instructions Manual page 104

Designs
Connection and wiring diagram
sÖ Heating circuit pump
or
Primary pump cylinder pri-
mary system
or
Circulation pump
water heat exchanger
or
Switching output
sA Cylinder primary pump
(accessories)
sK DHW circulation pump (on
site)
sL Shunt pump or boiler circuit
pump (on site)
fÖ Power supply, 230 V/50 Hz
fA Oil/gas fired burners
gÖ Central fault message
gS Mixer motor, return tempera-
ture raising facility
or
Motor for three-way mixing
valve, cylinder primary sys-
tem
104
(cont.)
lÖ
aBÖ
flue gas/
aBA
aBH
F1, F2 Fuse
F6
F7
K1-K10 Relay
S1
S2
X
Burner stage 2/modulating
External connections
(remove jumper when con-
necting)
a External safety equip-
ment
b External blocking
Safety chain (zero volt)
Power supply connection of
accessories
High limit safety cut-out "E"
110 °C (100 °C)
Control thermostat "R"
95 °C (100 °C, 110 °C)
ON/OFF switch "8"
TEST key
Electrical interfaces