Overview Of Electrical Connections - Viessmann Vitotronic 200 Installation And Service Instructions For Contractors

Overview of electrical connections

Plug
aJA
aJB
aVD .1/ aVD .2
aVD .2/ aVD .3
aVG
.1/ .2
aVH aVH
.2/ .3
aVH aVH
Additional external functions via EA1 extension:
External demand
■
External blocking
■
External operating program changeover
■
Connections to the 230 V~ PCB
C
Plug
A1
sÖ
sA
sK
sL
fÖ
fA
gÖ
A1
gS
lÖ
(cont.)
Component
One of the following temperature sensors:
Therm-Control temperature sensor
■
T1 return temperature sensor
■
One of the following temperature sensors:
Temperature sensor cylinder loading system
■
T2 return temperature sensor
■
One of the following functions:
External operating program changeover
■
Mixer OPEN
■
One of the following functions:
External blocking
■
Mixer CLOSE
■
KM-BUS subscribers
External changeover, stepped / modulating burner
External demand
Component
One of the following circulation pumps:
Heating circuit pump for heating circuit 1 without mixer
■
Primary cylinder loading pump for cylinder loading system
■
Circulation pump for flue gas/water heat exchanger
■
or
Switching output for flow rate reduction (Therm-Control)
One of the following circulation pumps:
Circulation pump for cylinder heating
■
Secondary cylinder loading pump for cylinder loading system
■
DHW circulation pump
One of the following circulation pumps:
Shunt pump
■
Boiler circuit pump
■
Boiler circuit pump with butterfly valve function
■
Power supply
Burner stage 1
Central fault message facility
One of the following functions:
Mixing valve for return temperature control
■
Mixing valve, heat exchanger set
■
One of the following functions:
Burner stage 2
■
Modulating burner
■
Note
Connections to EA1 extension: See page 26.
Electrical connections
19