Power Wiring And Communications Cable Connections - LG MULTI F Installation Manual
Multi-zone heat pump systems
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- Engineering manual (224 pages) ,
- Installation manual (65 pages) ,
- Install (9 pages)
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F
MULTI
F
MULTI
MAX
Outdoor Unit Wiring Connection Guidelines, continued.
If ring terminals or spade clips are not available, then:
•
Do not terminate different gauge wires to the power terminal block. Slack in the wiring may generate heat and fire.
•
Do not over tighten the connections; overtightening may damage the terminals.
• When terminating wires of the same thickness, follow the instructions demonstrated in the illustrations below.
•
• Use an appropriately sized screwdriver for tightening the terminals.
Figure 75: Proper and Improper Power Wiring Connections
Terminate multiple power wires of
the same gauge to both sides.
•
Never apply line voltage power to the communications cable terminal block. If contact is made, the PCBs may be damaged.
• Always include some allowance in the wiring length when terminating. Provide some slack to facilitate removing the electrical panels while
servicing.
• If power wires are not properly terminated and firmly attached, there is risk of fire, electric shock, and physical injury or death.
•
Never ground the shield of the communications cable to the indoor unit frame or other grounded entities of the building. Failure to
properly provide a National Electrical Code-approved earth ground can result in electric shock, physical injury or death.
1. Remove the side panel and the conduit panel knockouts.
2. Detach the control cover by loosening and removing the screws.
3. Draw the power wiring to the outdoor unit, and the power wiring / communications cable (connecting cable) to the indoor units or BD unit
(Multi F MAX systems only), through field-supplied conduits. Ensure there is enough length to connect the wiring / cables to the terminals
on the outdoor unit. Secure the conduit to the outdoor unit using a field-supplied lock nut on the interior of the outdoor unit frame.
4. Properly connect the power wiring, and the power wiring / communications cable (connecting cable) to the correct terminals. Refer to the
outdoor unit wiring
diagram.
5. To provide strain relief, (separately) secure the power wiring and the power wiring / communications cable (connecting cable) to the out-
door unit with the factory-supplied clamps (up to 35 lbs.). Zip ties can also be used to hold all wiring / cables in place.
6. Re-attach the outdoor unit cover control and side panel to the original position with the screws.
DANGER
Do not use damaged or loose power wiring.
Power Wiring and Communications Cable Connections
Do not terminate two wires on
one side.
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.
:Copper Wire
Do not terminate different gauge
wires to a terminal block.
WIRING
55
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