Panasonic CU-4KE24NBU, CU-4KE31NBU, CU-3KE19NBU Wiring Instructions for the Outdoor Unit, Fig

5-5. Wiring Instructions for the Outdoor Unit

CAUTION

Be sure to correctly align inter-unit cables A, B, C and D.

Outdoor unit

Indoor unit A

				Terminal board
								1	2
1	2	3	4	5	6	7	8	9 10 11 12

Inter Unit	Inter Unit
(conduit)	(conduit)

Power supply (conduit)

Power: Single-phase, 230/208VAC 60HZ

Power breaker (not provided)

Ground Power cable (not provided) (#12: Less than 85 ft.)

Indoor unit D

A is the indoor unit with
refrigerant tubing that is
connected to service valve	1 2 3
A (bottom) of the outdoor unit.
Terminal board

	D is the indoor unit with
	refrigerant tubing that is
1 2 3	connected to service valve
	D (top) of the outdoor unit.

Label A	Label D	Terminal board
A	D

Indoor unit B

B is the indoor unit with refrigerant tubing that is

connected to service valve B 1 2 3 (second from the bottom) of

the outdoor unit.

Terminal board

Inter-unit cables #14 (not provided)

Inter-unit cables #14 (not provided)

Label B

B

Inter-unit cables			Indoor unit C
#14 (not provided)
					C is the indoor unit with
					refrigerant tubing that is
Inter-unit cables				1 2 3	connected to service valve
#14 (not provided)					C (third from the bottom)
					of the outdoor unit.
	Label C
					Terminal board
		C

Be sure to perform grounding. Attach a ground wire to either the

outdoor unit or indoor unit.

If there is a grounding terminal inside the room, use the grounding screw inside the indoor unit.

Be sure to apply the provided labels to both ends of the inter-unit cables to prevent mis- wiring. The units will not function if the wiring connections are incorrect.

# ... AWG (American Wire Gauge)

Fig. 31

Use a dedicated air conditioner circuit for power.

To make connections to the outdoor unit, remove the inspection panel and tubing panel.

Do not bring the inter-unit cables or power cable into contact with tubing or service valves.

Use outdoor unit cable fasteners and fasten the inter-unit cables at the location where the cables are double- sheathed.

Arrange the wiring so that the inter-unit cables are contained in the inspection panel and tubing panel, as shown in Fig. 31.

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