Operating instructions

22
System details/functions
Special functions (cont.)
A Connection extension
B VitosolicĂ100
C Solar circuit pump
D Circulation pump for heating up
the pre-heat stage
E High limit safety cut-out
(if required)
F Cylinder temperature sensorĂ(NTC)
of boiler control unit
*2
G Cylinder temperature sensorĂ(PTC)
of boiler control unit
*2
H To boiler control unit
K Mains isolator, on site
*1
Remove jumper when making this
connection.
*2
Connection, see pageĂ23.
5862Ă490ĂGB
1 2 3 4 5
PTC
NTC
PTC Control
unit
LR1N R2 N LN
USPSOP STB
X1
1~
M
*1
1~
M
or
CD
E
H
X2 X3
F
G
K1
R1
K1
R2
PE NL
A
12 13 14 15 16 17 18 19 20
NR2NR1N L
230 V
50 Hz
B
BUBKBN
K