Viessmann VITOTRONIC 200 Installation And Service Instructions Manual page 102

Designs
Connection and Wiring Diagrams
Legend
sÖ A1 Heating circulation pump
or
Primary pump, tank loading system
sA DHW pump (accessory)
DHW recirculation pump (accessories)
sK
Distribution pump
sL
fÖ Power supply 120V/60 Hz
Output for central fault message
gÖ
gS A1 Motor for 3-way mixing valve, tank loading system
aBH Power supply for accessories
F MCB/fuse
K2-K10 Relay
S1 ON/OFF switch
X... Electrical interfaces
102
Vitotronic 200, HO1B and 300-K, MW2C Installation/Service
(continued)
PCB 120V~