Manualshelf

Wall Mounted Installation Manual

ManualsBrandsLG ManualsAir ConditionersLG Four Zone 48K Total BTU - 18.6 SEER - 208/230 Volt Energy Star Mini Split Package with 4 Wall Units (18K + 15K + 15K + 7K)
31323334353637383940
Table Of Contents
31
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MAX
MULTI
F
MULTI
F
Connection Socket
A
B
Figure 37: Connection Socket Installation.
Installing Field Piping to the Outdoor Unit Piping Connections
1. Verify the outdoor unit service ports are closed.
2. Remove the caps on the outdoor unit piping connections.
3. Connect the gas piping first to ROOM A, then to ROOM B, then to ROOM C, in that
order. Number of connections will differ depending on outdoor unit.
4. Tighten each gas piping connection individually following the “Tightening the Flare Nuts”
procedure earlier in this section.
5. Connect the liquid piping first to ROOM A, then to ROOM B, then to ROOM C, in that
order. Number of connections will differ depending on outdoor unit.
6. Tighten each liquid piping connection individually following the “Tightening the Flare
Nuts” procedure earlier in this section.
Using the Connection Socket
Some indoor units require the use of a connection socket when piping the indoor units
to the outdoor unit. (See previous page for information.) The connection sockets are
included as a factory-supplied accessory with the indoor units. To install:
1. Align the center of the piping sections as seen in the diagrams at right and below.
2. Follow the “Tightening the Flare Nuts”procedure earlier in this section.
3. When all piping installation has been completed, perform the triple leak / pressure
and evacuation tests (see the Final Installation Procedures Section in the Multi F /
Multi F MAX Outdoor Unit Installation Manual), verify that the system does not have
any leaks, and then fully insulate all joints / connections.
Connection Socket Necessary
Only for 18, 24 kBtu/h Indoor
Units
A
B
Flare
to
Indoor
Unit
Flare
to
Outdoor
Unit
Figure 38: Close Up of the Field Piping to the
Outdoor Unit Piping Connection.
Figure 39: Connection Socket Diagram, External View.
Figure 40: Connection Socket Diagram, Internal View.
2XWGRRU8QLWWR,QGRRU8QLW&RQQHFWLRQV
INSTALLATION