INTRODUCTION | 79
Electrical Connections and Mechanical Specs
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.
ELECTRICAL CONNECTIONS
Figure 72: Detailed Power / Communications System Schematic.
L
L
N
N
G
Power Supply
Main Switch
Circuit Breaker
Fuse
Power Wiring
(Including Ground)
Outdoor Unit
1(L1) 2(L2)
Terminal Block Outdoor
1(L1) 2(L2) 3
Terminal Block Outdoor
Communication
Cable
1(L1) 2(L2)
Terminal Block Indoor
3
Power
Wiring
Indoor Unit
•
Power wiring and communications cable sizes must comply with applicable federal UL / ETL, state, and local codes.
•
Separately wire the high and low voltage lines to avoid damage to unit.
•
Local codes may require field-installed disconnect switches from outdoor unit to indoor unit.
•
Use heat-proof electrical wire capable of withstanding temperatures up to 167°F to avoid damage to unit.
•
Always use a circuit breaker or time delay fuse when connecting electrical wiring to the unit.
•
Firmly connect the wire. Loose wiring may cause unit malfunction, the wires to burnout or the terminal to overheat and catch fire. There
is a risk of equipment malfunction or property damage.
•
Use outdoor and waterproof connection cable rated up to 300V for the connection between the indoor and outdoor unit to avoid dam
-
age to the unit.
•
Comply with local codes while running wire from the indoor unit to the outdoor unit.
•
Do not allow wire to touch refrigerant tubing, the compressor or any moving parts as it can lead to mechanical failure.