Viessmann VITOSOLIC 200 Installation And Service Instructions Manual page 99

Systems
(cont.)
Hydraulic type 2
S1
S2
R1
Relay and sensor assignment
Functions
Assignment by
scheme
Function block 1
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
S4
R4
Relay R...
1 2 3 4 5
x x
x
x
x
x
x
*3
Function description
Sensor S...
6 7 1 2 3 4
x x x
x x
x
x
x
x
x
x
x
5 6 7 8 9
x x
x x
x x
99