Viessmann VITOTRONIC 200 Service Instructions Manual page 155

Main and extension PCB
Plug sYS
Terminals Function
212.2 Heating circuit pump for
heating circuit without mixer
A1
A1.
212.3 DHW circulation pump.
212.4 Solar circuit pump with high
limit safety cut-out (max.
95 °C) for DHW cylinder
(only with integral solar con-
trol function)
Expansion PCB on main PCB
For use see chapter "Overview of the
PCBs".
(cont.)
Explanation
■ This pump is installed in addition to the
secondary pump if a heating water
buffer cylinder is connected.
■ Connect the temperature limiter in ser-
ies as maximum temperature limiter
for underfloor heating circuit (if instal-
led).
Connection values
■ Output: 100 W
■ Voltage: 230 V~
■ Max. switching current: 4 (2) A
Connection values
■ Output: 50 W
■ Voltage: 230 V~
■ Max. switching current: 4 (2) A
Connect the high limit safety cut-out on
site in series with the solar circuit
pump.
Connection values
■ Output: 130 W
■ Voltage: 230 V~
■ Max. switching current: 4 (2) A
PCBs and connection options
155