13
5.2 Outdoor units
No Part
name
1
Compressor terminal
2
Temp. sensor terminal of low
ambient temp. cooling
3
Compressor overload protection
terminal
4
Outdoor temp. sensor terminal
5
High pressure protection terminal
6
Low pressure protection terminal
7
Outdoor fan terminal
8
Terminal of chassis electric
heating belt
9
4-way valve terminal
10
Terminal of compressor electric
heating belt
11
Temp sensor terminal of gas
valve and liquid valve
12
Electric expansion valve terminal
13
Terminal of IDU and ODU
communication wire
14
Terminal of communication
neutral wire
15
Live wire terminal
Model: BD2M53A3
1
1
2 3 4
5 6
7
8
9
10
11
12
13
14
15
16
16
Neutral wire terminal
No Part
name
1 Compressor
terminal
2
High pressure protection
3 Low
pressure
protection
4
Compressor overload protection
5
Outdoor temp. sensor terminal
6 Terminal
chassis electric heater
7
Terminal of comp. electric heater
8
Outdoor fan terminal
9
4-way valve terminal
10
Unit A liquid valve and gas valve
temp. sensor
11
Unit B liquid valve and gas valve
temp. sensor
12
Unit C liquid valve and gas valve
temp. sensor
13
Unit D liquid valve and gas valve
temp. sensor
14
Unit A electronic expansion valve
15
Unit B electronic expansion valve
16
Unit C electronic expansion valve
17
Unit D electronic expansion valve
18
Communication wire with indoor
19 Communication
neutral
wire
20 Live
wire
21 Neutral
wire
22 Reactor
1
Models: BD3M98A3
1
2
3 4
5
6
8
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
23 Reactor
2
