Indoor Unit Installation; Wiring Connection - LG MULTI V JRNU28GBGA3 Installation Manual

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.
Terminal Block Indoor
1(L) 2(N)
INDOOR POWER INPUT
WARNING : Make sure that the screws of the terminal are free from looseness.
Clamping of cables
1) Arrange 2 power cables on the control panel.
2) First, fasten the steel clamp with a screw to the inner boss of control panel.
3) For the cooling model, fix the other side of the clamp with a screw strongly. For the heat pump model, put the
0.75mm 2 cable(thinner cable) on the clamp and tighten it with a plastic clamp to the other boss of the control
panel.
CAUTION : The Power cord connected to the unit should be selected according
to the following specifications.
Outdoor unit Indoor unit
SODU SODU
3 4
• 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
Central controller
IDU IDU INTERNET DRY1 DRY2 GND
Installation
New building
Outdoor unit
12V
Installation Manual 9