Viessmann VITOSOLIC 200 Installation And Service Instructions Manual page 104

Function description
Systems
(cont.)
Hydraulic type 4
S1 S9
R1 R2
R3
S2
R4
Relay and sensor assignment
Functions
Assignment by
scheme
Ext. Heat exchanger
Additional function
Parallel relay
Function block 2
DHW heating
Bypass
Function block 3
Central fault message
Booster suppression
Only if this function is achieved via contact control (see page 132).
*3
104
S4
Relay R...
1 2 3 4 5
x x x x
*3
Sensor S...
6 7 1 2
x x
x
x
x
x
x
x
x
x
x
3 4 5 6 7
x
x
x x
x x
x
x
8 9
x
x