Indoor Unit Installation; Wiring Connection - LG MULTI V ARNU073B3G4 Installation Manual

Installation

Indoor Unit Installation

• Select and mark the position for fixing bolts.
• Drill the hole for set anchor on the face of ceiling.
CAUTION : Tighten the nut and bolt
to prevent unit falling.

Wiring Connection

Connect the wires to the terminals on the control board individually according to the outdoor unit connection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit respectively.
B3/B4 Series
Terminal Block Indoor
L(L1) N(L2)
Indoor Power Input
WARNING : Make sure that the screws of the terminal are free from looseness.
Connection method of the connecting cable(Example)
Lock nut
Conduit
WARNING : Loose wiring may cause the terminal to overheat or result in unit
malfunction.
A fire hazzard may also exist.
Therefore, be sure all wiring is tightly connected.
10 10 Indoor Unit Indoor Unit
Indoor Unit
Terminal Block Indoor
SODU
YL RD BK A B
B A
Wired Remote
Controller
• Insert the set anchor and washer onto the suspen-
sion bolts for locking the suspension bolts on the
ceiling.
• Mount the suspension bolts to the set anchor firmly.
• Secure the installation plates onto the suspension
bolts (adjust level roughly) using nuts, washers
and spring washers.
Old building
1 Set anchor
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
Outdoor Unit
IDU INTERNET DRY1
- - B A -
L(L1) N(L2)
Power Supply
High Voltage
(208/230V)
New building
DRY2 GND 12V
- - -
YL RD BK A B
Wired remote Transmission
controller