Indoor Unit Connections - LG MULTI F Installation Manual

F
MULTI
F
MULTI MAX
Drilling the Piping Hole
Follow all piping clearance recommendations.
1. Using a 2-3/4 inch hole core drill bit, drill a hole following installation guidelines and applica-
tion needs.
• The slant of the hole must be 3/16 inches to 5/16 inches from level with the slant being upward
on the indoor unit side and downward on the outdoor unit side.
2. Finish off the newly drilled hole as shown with bushing and sleeve covering to prevent dam-
age to the insulation and piping.
Preparing for Electrical Connections
1. To access the terminal block, remove the metal control box cover
by unscrewing the two (2) screws that hold it in place. Set aside
the control box cover and screws for reattachment.
2. Insert the power wiring / communications cable from the outdoor
unit or branch distribution unit (Multi F MAX [with or without
LGRED] systems only) through its designated access holes in
the sides of the indoor unit and control box to prevent damage.
To prevent electromagnetic interference and product malfunction,
leave a space between the power wiring and communications
cable outside of the indoor unit. If using a conduit, attach it to the
conduit mounting plate at the access hole, and secure with a lock
nut.
Preparing the Indoor Unit For
Conduit Use
1. Remove the rubber stopper on the indoor unit. Pass the power
wiring / communications cable through the conduit, the conduit
mounting plate, and to / through the control panel of the indoor
unit.
2. Tighten the conduit and the conduit mounting plate together.
3. Connect the power wiring / communications cable to the indoor
unit terminal block.
4. Screw the conduit mounting plate to the indoor unit.
•
• -
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.
Figure 17: Drilling the Piping Hole.
Drill the piping access hole slightly tilted to the outdoor
side using a Ø2-3/4 inch (70mm) hole-core drill.
Figure 15: Power Wiring and Communications Cable Connection
Access.
Control Box Cover
Figure 16: Using a Conduit.
Conduit Bracket
Screws
INSTALLATION

Indoor Unit Connections

Wall
Indoor Outdoor
Power Wiring
Wired
Controller
Cabl e
Control Box
Cover Screws
Wiring / Cable Connections
Rubber Stopper
Cable
Conduit
_ 19
Ceiling cassette 4-way
21