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STD. WALL-MOUNTED | 89
Low Wall Console
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
MULTI
F
MAX
MULTI
F
Installation and Best Layout Practices
Power Wiring / Communications Cable Guidelines
LOW WALL CONSOLE INDOOR UNITS
• Follow manufacturer’s circuit diagrams in the technical manuals.
• Confirm power source specifications.
• Confirm that the electrical capacity is sufficient.
• Starting current must be maintained ±10 percent of the rated current marked on the outdoor unit name plate.
• Confirm cable thickness specifications.
• It is required that a circuit breaker is installed, especially if conditions could become wet or moist.
• Include a disconnect in the power wiring system, add an air gap contact separation of at least 1/8 inch in each active (phase) conductor.
Figure 110: Connecting Power Wiring / Communications Cable.
Connect Power Wiring and
Communications Cable
1. Insert the power wiring / communications cable from the outdoor
unit or branch distribution unit (Multi F MAX systems only).
2. Remove screws 1 and 2 and remove control box cover.
3. Connect each wire to its appropriate terminal on the indoor unit
control board. Verify that the color and terminal numbers from the
outdoor unit or branch distribution unit (Multi F MAX systems only)
wiring match the color and terminal numbers on the indoor unit.
4. Secure power wiring/communications cable with cable restraint.
Figure 111:Simplied View of Indoor Unit to Outdoor Unit / Branch
Distribution Unit Terminal Connections
Figure 112:Securing Wiring to Unit.
• Loose wiring will cause unit to malfunction, overheat, and catch
fire, resulting in severe injury or death.
Note:
• Terminal screws will become loose during transport. Properly
tighten the terminal connections during installation.
A voltage drop will cause the following problems:
• Magnetic switch vibration, fuse breaks, or disturbance to the
normal function of an overload protection device.
• Compressor will not receive the proper starting current.
11
3
3
2
2
Terminal Block
Connecting Cable
Clamp Cord
Bracket
Conduit
(Field supply)
Lock nut
(Field supply)
L(L1) N(L2) 3
Terminal Block of Indoor Unit
Outdoor
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