LG THERMA V Series Installation Manual page 39

Connecting the internal control unit – TT3000
Connecting the device to the power source can only be performed by a qualified installer in a
voltage-free state!
As part of connecting the internal control unit to the connecting clips X1...X7, connect the following
cables:
• Power cable,
• Communication cable for the external device,
• Outdoor temperature sensor
Legend of cable connections to the connecting clips:
CONNECTING
MARK
TERMINALS
X1
L1, L2, L3, N,
A5, GND
X2
Q12, N
N, Q11,
Q7, N,
Q8, N,
X3
N, Q9+, Q10-
A7, GND
D8, GND
D7, GND
X4
D6, GND
D5, GND
BUS–A, BUS – B,
X5
GND, 10 V
X7 A+, B-, 12 V, GND
5
TW MODBUS
TX MODBUS
Ethernet
DIMENSIONS
OF CABLE
Power cable
2 x 0.75 mm 2 Temperature sensor of outdoor temperature
2 x 0.75 mm 2 Additional external source
3 x 0.75 mm 2 Cooling valve
3 x 0.75 mm Circulation pump of heating cycle 1 (optional)
2
3 x 0.75 mm Circulation pump of heating cycle 2 (optional)
2
3 x 0.75 mm 2 Mixing valve of heating cycle 2 (optional)
2 x 0.75 mm 2 Temperature sensor of mixing-heating cycle 2 (optional)
2 x 0.75 mm 2 Switch for heating/cooling (optional)
2 x 0.75 mm 2 Thermostat of mixing cycle 2 (optional)
2 x 0.75 mm 2 Thermostat of mixing cycle 1 (optional)
2 x 0.75 mm 2 Remote on/off (optional)
Cable H05VV-F Communication of the external control unit in the
4 x 0,75 mm 2 WPLV device
4 x 0.75 mm Communication with the expansion unit TT3003
2
Web module
UTP Communication with PLC
/ Not in use
UTP Internet connection
Installation of Indoor Unit
DESCRIPTION
Installation Manual 39