Indoor Unit Installation; Wiring Connection - LG ARNU48GBRZ4 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.
BR(Chasiss)
Terminal Block Indoor Terminal Block Indoor
L(L1) N(L2) 3
INDOOR POWER INPUT
B8(Chasiss)
Terminal Block Indoor Terminal Block Indoor
L(L1)
INDOOR POWER INPUT
WARNING : Make sure that the screws of the terminal are free from looseness.
• Communication and Power Cable
1. Communication Cable : CVV-SB 1.0~1.5x2C
2. Power Cable : H07RN-F 1.5x3C
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
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
4
ODU ODU IDU IDU INTERNET
Terminal Block Indoor Outdoor unit Indoor unit
N(L2) 3 4
ODU
2 cable(thinner cable) on the clamp and tighten it with a plastic clamp to
• Insert the set anchor and washer onto the
suspension 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
Central controller
Outdoor unit
DRY1 DRY2 GND 12V
Central controller
IDU IDU INTERNET DRY1 DRY2 GND
ODU
Installation
New building
1 Set anchor
2 Plate washer
3 Spring washer
4 Nut
5 Suspension
bolts
Outdoor
unit
12V
Installation Manual 11