LG MULTI F LMU18CHV Installation Manual page 57

F
MULTI
F
MULTI MAX
Distributor (BD) Unit (Multi F MAX Systems Only)
General Instructions
• Always connect power wiring / communications cable matching
the BD unit terminals to their respective indoor units (Example for
three-port BD Unit PMBD3630: A, B, and C).
• Follow the instructions on the nameplates and connect wiring /
cables of the outdoor unit and indoor units to the correct terminals
(1, 2, 3). Always attach each ground wire separately to a ground-
ing screw.
• After completion, secure wiring with wire clamps. Secure wiring
firmly to the indoor unit.
BD Unit Wiring Connection Procedure
1. Remove the BD unit control cover. Unscrew the two (2) screws, and slide the cover off the BD frame following the arrows in the diagram
(Step 1).
2. Draw the power wiring / communications cable through the field-supplied conduit so there is enough length to connect wiring / cable to the
terminals on the BD unit. Secure conduit to the BD unit using a field-supplied lock nut on the interior of the BD unit frame (Step 2).
3. Connect wiring / cable from the outdoor unit to the BD unit terminals, and from the BD unit terminals to the indoor unit terminals following
the wiring diagram on the outdoor unit control cover (Step 3). Allow 11-13/16 inches of slack in the wire harness. Attach wiring / cable to
the BD unit with clamps at four (4) locations.
4. Replace the BD unit control cover following the arrows in the diagram. Tighten the two (2) screws to finish (Step 4).
Figure 79: BD Unit Wiring Steps.
Step 1
death.
Always refer to the circuit diagram on the inside of the outdoor unit control cover.
Power Wiring and Communications Cable Connections
Step 2
Conduit (field supplied)
Lock nut (field supplied) Lock nut (field supply)
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.
Figure 78: Interior View of a BD Unit (Three-Port PMBD3630 Example
Shown).
"A" Room
"B" Room
"C" Room
Connection Wire to Indoor Units
Step 3
WIRING
A
B
C
CN-PWR
Connection Wire from Outdoor Unit
Step 4
physical injury or
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