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Central heating
Learning Thermostat - Smart thermostat - Black
21
22
23
24
25
26
27
28
29
30
S-p
l
a
n
L
N
Hot water tank
Boile
r
Heating valve
Water valve
1
2 V
3
A
230
V
AC
/
50 H
z
N
L
1
2
3
4
5
6
OT1
OT2
T1
T2
L
N
1
Com
GR
BW
O
GR
BW
O
Inp
ut p
owe
r
22
1
...
...
20
21
22
23
24
...
...
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