Connecting Pipings And The Cable To Outdoor Unit - LG LM50 2004-E1 Product Data

14. Installation

14.4 Connecting Pipings and the cable to Outdoor unit

14.4.1 Connecting the pipings to the Outdoor unit
1. While installing pipes, you must use the connector.
Indoor Units
A
18k, 24k Ø9.52¡Ø12.7
A
*Connecting pipe size
Indoor Units Gas side
7k Ø9.52(3/8)
9k Ø9.52(3/8)
12k Ø9.52(3/8)
18k Ø12.7(1/2)
24k Ø12.7(1/2)
14.4.2 Connect the cable
Connecting the cable to the Indoor unit.
Connect the cable to the indoor unit by connecting the wires to the terminals on the control board indi-
vidually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and
the terminal No. are the same as those of the indoor unit.)
The earth wire should be longer than the common wires.
The circuit diagram is not subject to change without notice.
When installing, refer to the circuit diagram of indoor & outdoor unit. Indoor connection circuit is behind
the front panel & outdoor connection circuit is inside the control cover.
CAUTION:
• The circuit diagram is not subject to change without notice.
• Be sure to connect wires according to the wiring diagram.
• Connect the wires firmly, so that not to be pulled out easily.
• Connect the wires according to color codes as referred in the wiring diagram.
72 MPS Variable Multi Split System(50Hz, R410A)
Gas Liquid
B A B
Not necessary
B
Liquid side
Ø6.35(1/4)
Ø6.35(1/4)
Ø6.35(1/4)
Ø6.35(1/4)
Ø6.35(1/4)
2. Align the center of the pipings and tighten the flare
nut by hand
3. Finally, tighten the flare nut with torque wrench until
the wrench clicks.
I When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the arrow on
the wrench.
Outdoor unit
Connector
A-UNIT
Gas side piping
B-UNIT
Liquid side piping
Torque wrench