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CU-3KE19NBU Owner's Manual - Page 1
...-concealed type CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U CS-KE12NB4UW & CZ-18BT1U
CU-4KE31NBU
IMPORTANT
These air conditioners employ new refrigerant R410A. REFERENCE NO. Pay special attention when servicing the unit. TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT : CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
Capacity at 230V 19,100 BTU/h 23,200...
CU-3KE19NBU Owner's Manual - Page 85
... colors, to measure the voltage (12 V). Sequence
CU-3KE19NBU MV0 MV1 MV2
CU-4KE24NBU CU-4KE31NBU
MV0 MV1 MV2 MV3
Check the illumination of the electric expansion valve.
Check the coil resistance.
0 ohm
Approx. 46 +/- 4 ohm
Check the resistance between the 2 tubes drops.
*1 If you have manually checked the electric expansion valve, be sure to...
CU-3KE19NBU Owner's Manual - Page 94
... is Leaking" and completely carry out repairs. Only then should you recharge the ...replacing an older unit that came with a R410A unit, do not use R22. Use of refrigerant as stated in liquid state only. Retro-Fitting Existing Systems
9-8-1. 9-7. Follow instructions given in a hazardous condition.
9-8-2. Charge additional refrigerant in this service manual or the installation manual...
CU-3KE19NBU Owner's Manual - Page 96
APPENDIX A INSTALLATION INSTRUCTIONS CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU
(852-6-4190-584-00-2)
A-1
CU-3KE19NBU Owner's Manual - Page 97
...
Outdoor Unit CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU
Power Source: 60 Hz, single-phase, 230 / 208 VAC
1. Use of Outdoor Unit Installation
3. Wiring System Diagram 5-4. Connecting Indoor Units 2-3. Flaring Procedure with a Flare Tool 3-4. Baffle Plate for Installation (not supplied) 1-2. Tools Required for the Outdoor Unit 2-5. For Outdoor Unit
INSTALLATION INSTRUCTIONS Split...
CU-3KE19NBU Owner's Manual - Page 98
... bend your certified dealer for additional instructions. In Case of your job to install or service the system so it is an important part of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to help for a special problem, contact our sales/service outlet or your knees when lifting to...
CU-3KE19NBU Owner's Manual - Page 100
...
Q'ty
Parts
4
Reducer (1/2" 3/8")
Figure
Q'ty
CU-4KE24NBU 1
CU-4KE31NBU 2
Packed in kits which contain the narrow and wide tubing, fittings and insulation. Foamed polyethylene insulation for connecting the outdoor unit to install the air conditioning system. Wire size varies with the system before obtaining wire. Refer to 5. Wiring Instructions for Installation
1.
Also...
CU-3KE19NBU Owner's Manual - Page 102
... intercom. Table 3
Model
Max. Allowable Total Tubing...CU-3KE19NBU
82
150 (L1+L2+L3)
150 (L1+L2+L3)
50
-
Electrical noise from any of these sources may affect operation.
install in a sturdy manner to avoid increased operating noise. Allowable Tubing Length Per Unit
(ft.)
Max. install the indoor unit more detailed charging information, refer to the Technical & Service Manual...
CU-3KE19NBU Owner's Manual - Page 118
... responsibility for any moving parts of such unauthorized changes.... system diagram. Power Line Length (ft.) Max. Table 6
Model
AWG
CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU
Max. AWG (American Wire Gauge)
22 Wrong wiring may...of local codes see the National Electric Code: ANSI/NFPA70.
Wiring Instructions
5-1. Carefully observe these regulations when carrying out the installation. Refer ...
CU-3KE19NBU/CU-4KE24-31NBU - Installation Manual - Page 2
... Outer Dimensions of service port R410A: 5/16"
Contents
Page IMPORTANT! Flaring Procedure with Unit 1-3. Tubing Connections 3-6. AIR PURGING 19 Air Purging with a Vacuum Pump (for Installation
2. TEST RUN 26
7. Indoor Unit CS-MKE7NKU CS-MKE9NKU CS-MKE12NKU CS-MKE18NKU CS-MKE24NKU CS-MKE9NB4U CS-MKE12NB4U CS-KE18NB4UW
Outdoor Unit CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU
Power...
CU-3KE19NBU/CU-4KE24-31NBU - Installation Manual - Page 3
... construct a strong wood or metal frame to a hazard or unsafe practice which can result in severe personal injury or death. In Case of Improper Installation
The manufacturer shall in this manual. It may be responsible for a special problem, contact our sales/service outlet or your job to the wiring diagram and these instructions when wiring.
CU-3KE19NBU/CU-4KE24-31NBU - Installation Manual - Page 5
...Knife or wire stripper
9. Reamer (for connecting wire
(See local codes.)
3. Manifold valve
1-2.
Refrigeration (armored) tape 2. Clamps or saddles to precise length of wiring. Cut each Cushion rubber
Reducer (3/8" 1/2")
CU-3KE19NBU 1
Figure
Q'ty
Parts
4
Reducer (1/2" 3/8")
Figure
Q'ty
CU-4KE24NBU 1
CU-4KE31NBU 2
Packed in kits which contain the narrow and wide...
CU-3KE19NBU/CU-4KE24-31NBU - Installation Manual - Page 7
...CU-4KE24NBU
82
150 (L1+L2+L3+L4)
200 (L1+L2+L3+L4)
50
0.22
CU-4KE31NBU
100
150 (L1+L2+L3+L4)
230 (L1+L2+L3+L4)
50
0.22
* If total tubing length becomes 150 to 200 ft. (Max.) or 150 to the Technical & Service Manual.
6 Table 3
Model... for television, radio, telephone, security system, or intercom.
install the indoor unit more detailed charging information, refer to 230 ft....
CU-3KE19NBU/CU-4KE24-31NBU - Installation Manual - Page 23
...Wiring Instructions
5-1. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to your local codes or in Table 6. Table 6 shows maximum wire lengths for any moving parts ...and (C) in the absence of such unauthorized changes.
5-2. Table 6
Model
AWG
CU-3KE19NBU CU-4KE24NBU CU-4KE31NBU
Max.
Wrong wiring may cause the unit to misoperate or ...
Parts List - Page 4
...Description
Model Number
81 CV6233136394 Packing 82 CV6233136370 Packing 83 CV6233136363 Packing 84 CV6233188911 Caution Label 85 CV6233190785 Mounting Plate
CV6233187860 Installation Instructions CV6233187846 Installation Instructions CV6233187853 Installation Instructions NOTE: Metal and plastic parts will be supplied basically with an asterisk (*) means the recommended service parts. when...
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