Multi F Engineering Manual

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Power Wiring / Communications Cable Guidelines

ART COOL GALLERY INDOOR UNITS

Connecting the Power Wiring and Communications Cable

Installation and Best Layout Practices

Control Board Cover

Lock nut

(field supplied)

Conduit

(field supplied)

1(L1) 2(L2) 3

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1. Insert the power wiring/communications cable from the out-

door unit or branch distribution unit (Multi F MAX systems only)

through the access hole of the indoor unit (ground wire must be

longer than the other wires/cables). Unscrew the control board

cover.

2. 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.

3. Secure the power wiring/communications cable to the control

board.

4. Reattach the control board cover.

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Distribution Unit Terminal Connections—LMAN097HVP and

LMAN127HVP models.

• 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.

Indoor Unit Terminal Block

GND

Outdoor Unit Terminal Block or

Branch Distribution Unit Terminal Block

(Multi F MAX Systems Only)

GND

GRN / YLW

3 or S

32(L2)1(L1)

• Loose wiring will cause unit to malfunction, overheat, and catch fire, resulting in severe injury or death.

Note:

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A voltage drop will cause the following problems:

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• Compressor will not receive the proper starting current.

ART COOL GALLERY™ | 43

Art Cool Gallery™

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MULTI

MAX

MULTI