%$6,&6(77,1*2)7+(7+5
(OHFWULFDOFRQQHFWLRQ
4$=
Domestic hot water
sensor (B3)
Green/Yellow
Blue
Br
o
w
n
Q3
Q1
F1
L
N
M
B1
0
B9
MD
A6
MB
DB
6
5
4
M
2
1
M
M
3
2
F
4
3
2
F
L
N
2379A01
B3
B7
0
/B
4
H1
/
1
/
1
DB
MB
M
H1
B7
0/B
4
B3
B1
0
M
B9
MD A6
MB
DB
Q3
Q1 F1
L N
RVA 47
/
1
/
1
/
1
/
1
7HUPLQDOER[
7HUPLQDOER[
7HUPLQDOER[
Q3
Q1
F1
L
N
M
B1
0
B9
MD
A6
MB
DB
6
5
4
M
2
1
M
M
3
2
F
4
3
2
F
L
N
2379A01
B3
B7
0
/B
4
H1
/
1
/
1
DB
MB
M
4$'
(B10)
Cascade flow
sensor
4$&
(B9)
Outside sensor
4$'
(B70)
Cascade return
sensor
H1
B7
0/B
4
B3
B1
0
M
B9
MD A6
MB
DB
Q3
Q1 F1
L N
4$$
)
Room
sensor
(option)
RVA 47
/
1
/
1
/
1
/
1
7HUPLQDOER[
Box
earth
Circulating pump
Q1
Circulating pump
Q3
)LJ
7HUPLQDOV
D.h.w. sensor
QAZ 21
B3/M terminal 4
D.h.w. circulator
Phase
Neutral
Earth
Q3 du RVA 47
Neutral terminal 1
Earth terminal 1