LG Therma V HU121 U33 - Page 53

THERMA V Split Type
5. Wiring diagrams
8
DHW Tank Integrated Unit
Elements mark
Connecting
Terminals
Description
A : Indoor unit Controller
3
- Basic input/output module MD1
TE1 Communication with I/O module MD2
TE2 Communication with the control electronics of the PLC screen module
JMP - Set-up of bridges (without)
X7
- Connecting terminal for communication with expansion module MD2
A+, B- Communication
GND, 12V Power supply
X6
- Connecting terminal for spatial corrector (optional)
A+, B- Communication
GND, 12V Power supply
X5
-
Connecting terminal for communication with external module Gateway
PI485 in WPLV device
BUS-A, BUS-B Communication
GND, 10V Power supply
5
-
Connecting terminal for communication with external module Gateway
PI485 in WPLV device
TW MODBUS Communication with PLC
TX MODBUS Not in use
Ethernet Internet (Ethernet) connection
PLC
- Process module
WM Communication with Web module
TEX Communication with outdoor unit - PI485 Gateway
TS Communication with the spatial corrector
TE2 Communication with the basic V/I module MD1
B : Gateway PI 485 in the outdoor unit
PI485
- External PI485 in the outdoor unit
BUS-A, BUS-B Communication with the control electronics of the Process module PLC
GND, + 10V Power supply
C : Expansion wall unit (3rd party)
3b
- Expansion input/output module MD2
TE1 Communication with the basic V/I module MD1
TE2 Not in use
JMP - Set-up of bridges (in first position)
X7
-
Connecting terminal for communication with I/O module MD1
A+, B- Communication
GND, 12V Power supply