Panasonic CU-4KS31NBU service manual For Outdoor Unit, Contents

For Outdoor Unit

INSTALLATION INSTRUCTIONS Split System Air Conditioner

This air conditioner uses the refrigerant R410A.

NOTE External diameter of service port R410A: 5/16"

Model Combinations

Combine indoor and outdoor units only as listed below.

Model No.
Indoor Unit	Outdoor Unit
CS-MKS7NKU	CU-3KS19NBU
CS-MKS9NKU	CU-4KS24NBU
CS-MKS12NKU	CU-4KS31NBU
CS-MKS18NKU
CS-MKS24NKU
CS-MKS9NB4U
CS-MKS12NB4U
CS-KS18NB4UW

Power Source:

60 Hz, single-phase, 230 / 208 VAC

	Contents
		Page
IMPORTANT!
Please Read Before Starting		2
1.	GENERAL	4
	1-1. Tools Required for Installation (not supplied)
	1-2. Accessories Supplied with Unit
	1-3. Optional Copper Tubing Kit
	1-4. Type of Copper Tube and Insulation Material
	1-5. Additional Materials Required for Installation
2.	INSTALLATION SITE SELECTION	5
	2-1. Indoor Unit
	2-2. Connecting Indoor Units
	2-3. Outdoor Unit
	2-4. Baffle Plate for the Outdoor Unit
	2-5. Outer Dimensions of Outdoor Unit
	2-6. Diagram of Outdoor Unit Installation
3.	INSTALLATION PROCESS	16
	3-1. Embedding the Tubing and Wiring
	3-2. Use of the Flaring Method
	3-3. Flaring Procedure with a Flare Tool
	3-4. Caution before Connecting Tubes Tightly
	3-5. Tubing Connections
	3-6. Insulation of Refrigerant Tubing
	3-7. Taping the Tubes
	3-8. Finishing the Installation
4.	AIR PURGING	19
	 Air Purging with a Vacuum Pump (for Test Run)
	 Pump Down

Combination example

Indoor unit B

Indoor unit A

Outdoor unit

Indoor unit D

Indoor unit C

5.	WIRING INSTRUCTIONS		22
	5-1. General Precautions on Wiring
	5-2.	Recommended Wire Length and Diameter
	5-3.	Wiring System Diagram
	5-4.	How to Connect Wiring to the Terminal
	5-5.	Wiring Instructions for the Outdoor Unit
6.	TEST RUN		26

7.CONNECTING A HOME AUTOMATION

DEVICE	27
8. INSTALLATION CHECK SHEET	27

85264190581001 2011 CV6233187761