Thermia Expansion module 1, Installation Manual

Page: 7 / 28

2.3 Connecting to accessory bus
Accessory bus
X2 2 1
50 51
50 51
EM 1 EM 1
EM1 HP X2
+B50 1
-A51 2
N52 3 (SGND)
B/
P
B/
P
B/
P PPP
xxx
TTTx
R
1
P
x
R
1
P
x
R
1
P 111 PPP 222
0
5
B
0
5
B
0
5
B
xxx
TTTx
R
2
P
x
R
2
P
x
R
2
P
1
5
A
1
5
A
1
5
A
2
5
N
2
5
N
2
5
N
3
5
E
3
5
E
3
5
E
0
6
B
0
6
B
0
6
B
1
6
A
1
6
A
1
6
A
2
6
N
2
6
N
2
6
N
3
6
E
3
6
E
3
6
E
1
7
1l
D
1
7
1l
D
1
7
1l
D
2
7
2l
D
2
7
2l
D
2
7
2l
D
3
7
3l
D
3
7
3l
D
3
7
3l
D
4
7
4l
D
4
7
4l
D
4
7
4l
D
5
7
5l
D
5
7
5l
D
5
7
5l
D
6
7
6l
D
6
7
6l
D
6
7
6l
D
7
7
7l
D
7
7
7l
D
7
7
7l
D
8
7
8l
D
8
7
8l
D
8
7
8l
D
1
9
1
O
1
9
1
O
1
9
1
O
AAA
0
9
d
n
0
9
d
n
0
9
d
n
ggg
AAA
2
9
2
O
2
9
2
O
2
9
2
O
AAA
3
9
3
O
3
9
3
O
3
9
3
O
AAA
4
9
4
O
4
9
4
O
4
9
4
O
AAA
5
9
5
O
5
9
5
O
5
9
5
O
AAA
+
G
1
+
G
1
+
G
1 333
C
+
4
C
+
4
C
+
4
0
G
2
0
G
2
0
G
2
- - -
O
D
G
0
1
O
D
G
0
1
O
D
G
0
1
1
O
D
1
1
1
O
D
1
1
1
O
D
1
1
2
O
D
2
1
2
O
D
2
1
2
O
D
2
1
3
O
D
3
1
3
O
D
3
1
3
O
D
3
1
4
O
D
4
1
4
O
D
4
1
4
O
D
4
1
5
O
D
5
1
5
O
D
5
1
5
O
D
5
1
6
O
D
6
1
6
O
D
6
1
6
O
D
6
1
7
O
D
7
1
7
O
D
7
1
7
O
D
7
1
1l
A
1
3
1l
A
1
3
1l
A
1
3
2l
A
2
3
2l
A
2
3
2l
A
2
3
d
n
d
n
d
n
ggg
A
0
3
A
0
3
A
0
3
3l
A
4
3
3l
A
4
3
3l
A
4
3
4l
A
5
3
4l
A
5
3
4l
A
5
3
1l
U
1
4
1l
U
1
4
1l
U
1
4
d
n
d
n
d
n
ggg
A
3
3
A
3
3
A
3
3
2l
U
2
4
2l
U
2
4
2l
U
2
4
d
n
d
n
d
n
ggg
A
0
4
A
0
4
A
0
4
3l
U
4
4
3l
U
4
4
3l
U
4
4
4l
U
5
4
4l
U
5
4
4l
U
5
4
d
ndndn
ggg
A
3
4
A
3
4
A
3
4
C C C
K OK OK O
. t. t. t x Ex Ex E
... p s i D p s i D p s i D
1 5 A 1 5 A 1 5 A
2 5 N
0 5 B 0 5 B 0 5 B
C28
1
2
3
Installation Guide Expansion module 1
Thermia Värmepumpar VQILV502
7