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IMPORTANT! 
Please Read Before Starting

This air conditioning system meets strict safety and operating
standards. As the installer or service person, it is an important
part of your job to install or service the system so it operates
safely and efficiently. 

For safe installation and trouble-free operation, you
must:

Carefully read this instruction booklet before beginning.

Follow each installation or repair step exactly as shown.

Observe all local, state, and national electrical codes.

Pay close attention to all warning and caution notices
given in this manual.

This symbol refers to a hazard
or unsafe practice which can
result in severe personal injury
or death.

This symbol refers to a hazard
or unsafe practice which can
result in personal injury or prod-
uct or property damage.

If Necessary, Get Help

These instructions are all you need for most installation
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions. 

In Case of Improper Installation

The manufacturer shall in no way be responsible for improp-
er installation or maintenance service, including failure to
follow the instructions in this document. 

SPECIAL PRECAUTIONS

When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE THIS SYSTEM. 

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are completed or reconnected and checked.

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system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and
inadequate grounding can cause 

accidental injury or

death.

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following local electrical codes.

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heating at connection points and a possible fire hazard.

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the unit must be grounded.

When Transporting

Be careful when picking up and moving the indoor and out-
door units. Get a partner to help, and bend your knees when
lifting to reduce strain on your back. Sharp edges or thin alu-
minum fins on the air conditioner can cut your fingers.

When Installing…

Select an installation location which is rigid and strong
enough to support or hold the unit, and select a location for
easy maintenance.

…In a Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.

…In a Room

Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.

Keep the fire alarm and the air
outlet at least 1.5 m away from
the unit.

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.

…In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle. 

…In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.

When Connecting Refrigerant Tubing

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gas leaks during the installation. Be careful not to allow 
contact of the refrigerant gas with a flame as this will
cause the generation of poisonous gas.

WARNING

WARNING

WARNING

CAUTION

CAUTION

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piping work

do not mix air except for speci-
fied refrigerant (R410A) in
refrigeration cycle. It causes
capacity down, and risk of
explosion and injury due to
high tension inside the refrige-
rant cycle.

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cause fire.

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other than specified type.
It may cause product damage,
burst and injury etc.

Summary of Contents for CS-KE30NKU

Page 1: ... Inter unit Connections 3 9 Mounting 3 10 Frame Fastening Method 3 11 Drain Hose 4 HOW TO INSTALL THE OUTDOOR UNIT 23 4 1 Wiring Instructions for the Outdoor Unit 4 2 Routing the Tubing and Wiring 5 REFRIGERANT TUBING 24 5 1 Use of the Flaring Method 5 2 Flaring Procedure with a Flare Tool 5 3 Caution before Connecting Tubes Tightly 5 4 Connecting Tubing between Indoor and Outdoor Units 5 5 Insula...

Page 2: ... connection points and a possible fire hazard 7R SUHYHQW SRVVLEOH KD DUGV IURP LQVXODWLRQ IDLOXUH the unit must be grounded When Transporting Be careful when picking up and moving the indoor and out door units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin alu minum fins on the air conditioner can cut your fingers When Installing Select an ...

Page 3: ...HFN that no metal scraps or bits of wiring have been left inside the unit being serviced Others 9HQWLODWH DQ HQFORVHG DUHDV ZKHQ LQVWDOOLQJ RU WHVWLQJ the refrigeration system Escaped refrigerant gas on contact with fire or heat can produce dangerously toxic gas RQILUP XSRQ FRPSOHWLQJ LQVWDOODWLRQ WKDW QR UHIULJHUDQW gas is leaking If escaped gas comes in contact with a stove gas water heater elec...

Page 4: ... Insulation Material If you wish to purchase these materials separately from a local source you will need 1 Deoxidized annealed copper tube for refrigerant tub ing as detailed in Table 2 Cut each tube to the appropriate lengths 1 to 1 4 30 cm to 40 cm to dampen vibration between units Table 2 2 Foamed polyethylene insulation for the specified copper tubes as required to precise length of tubing Wa...

Page 5: ...away from any antenna or power lines or connecting wires used for television radio telephone security system or intercom Electrical noise from any of these sources may affect operation Drain hose Indoor unit Outside drainage Fig 1 3 304 3 304 Front View 3 304 Fig 2 INDOOR UNIT Tubing length L OUTDOOR UNIT Elevation difference H Fig 3a WARNING To prevent abnormal heat genera tion and the possibilit...

Page 6: ...so that the flow of air at the intake port or exhaust port is not blocked and so that sufficient space is ensured for maintenance to be carried out without trouble In general the top also must be unob structed Fig 5a provide a solid base level concrete pad concrete block 6 x 1 4 15 x 40 cm beams or equal a minimum of 6 15 cm above ground level to reduce humidity and pro tect the unit against possi...

Page 7: ...558 4 3 45 8 4 4 3 5 40 3 5 8 8 3 45 08 25 04 3 8 D 4 89 54 49 8 68 99 8 3 856 9 5 9 854 04 4 04 558 40 3 8 D 2 2 2 Precautions for Installation in a Snowy Area 62 583 9 5 2 0 8 4 3 03 3 945 6 0 4 5804 5 5 558 40 9 5 2 9 58 62 583 4 62 583 9 5 2 049 22 4 08 04 1 90 5 5 558 40 62 583 5 4 054 3 9 083 4 40 3 9 9 8 0 4 58 52 9 4 9 5 049 22 054 54 855 9 C 5 9 854 04 5 4 83 9 8 9 3 9 1 4 5 68 4 40 853 0...

Page 8: ...2 14 31 32 13 32 25 32 Air Intake Air discharge Unit inch Air Air Intake 1 4 11 32 discharge Air discharge 2 2 3 Dimensions of Wind proof Duct Reference diagram for CU KE30NKU CU KE36NKU 9 16 21 9 16 1 4 22 1 4 23 7 16 4 31 32 4 31 32 21 25 32 11 13 16 11 13 16 1 5 16 15 16 18 15 16 1 31 32 1 31 32 1 31 32 8 21 32 1 3 16 22 7 8 Equivalent to the reverse side Unit inch 4 1 4 hole Reference diagram ...

Page 9: ...8 5 9 2 9 5 854 4 8 8 5 5 558 40 5 9 2 0 8 854 58 8 8 3 9 45 22 8 4 0 5 5 558 40 2 062 40 049 22 054 49 22 054 04 2 8 2 85 9 CAUTION 854 4 56 3 9 8 3 04 56 4 5 9 2 9 3 9 45 22 8 4 0 5 5 558 40 CAUTION 854 4 5 90 9 3 9 8 3 04 56 4 49 22 054 04 854 8 8 85 9 49 22 054 0 04 1 9 04 5 2 9 49 22 054 0 04 1 9 04 04 1 9 58 5 2 9 04 5 2 9 04 58 358 04 58 358 4 8 5 58 4 58 4 58 4 40 04 40 04 58 4 58 4 58 4 4...

Page 10: ...for snow proof duct Unit left reinforcement bracket for snow proof duct Fastened by screws at 14 locations Fastened by screws at 3 locations Fixing with front panel 2 9 32 hole 2 9 32 hole 2 9 32 hole 2 9 32 hole 9 32 X13 32 hole 15 11 32 Fastened by screws Same on the reverse side Fastened by screws at 2 locations 28 13 16 16 15 16 9 1 8 31 32 2 7 32 24 3 16 28 3 16 23 Fixing with rear panel 5 8 ...

Page 11: ... the front of unit 04 58 358 Obstacle to the rear of unit 04 2 40 049 22 054 2 062 40 049 22 054 58 358 40 9 Note 4 9 9 4 0 5 5 9 2 3 9 45 22 8 4 0 5 5 558 40 9 2 9 54 5 90 9 56 09 56 4 56 09 56 4 56 09 25 1 4 5 9 2 56 09 25 1 4 5 9 2 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 04 58 358 ...

Page 12: ...lation in front rear rows Obstacles to the front and rear of unit 56 4 5 90 9 3 9 8 3 04 56 4 0 8 5 9 2 5 854 58 5 9 2 5 8 8 3 9 45 22 8 4 0 5 5 558 40 56 4 5 90 9 3 9 8 3 04 56 4 0 8 5 9 2 5 854 58 5 9 2 5 8 8 3 9 45 22 8 4 0 5 5 558 40 40 04 4 0 8 5 3 8 5 4 0 8 5 3 8 5 4 0 8 5 3 8 5 04 58 358 04 58 358 4 0 8 5 3 8 5 4 0 8 5 3 8 5 4 0 8 5 3 8 5 ...

Page 13: ...ap For details refer to Switching drain hose and drain cap on page 21 3 2 Make a Hole 1 Place the rear panel from the indoor unit on the wall at the location selected Make sure the panel is horizontal using a carpenter s level or tape measure to measure down from the ceiling Wait until after cutting the hole before attaching the rear panel to the wall 2 Determine which side of the unit you should ...

Page 14: ...n the rear panel Using the 8 screw holes with mark is recommended to attach the rear panel securely to the wall See either Item a or b below depending on the wall type a If Wooden Wall 1 Attach the rear panel to the wall with the 8 screws provided Fig 13 If you are not able to line up the holes in the rear panel with the beam locations marked on the wall use rawl plugs or toggle bolts to go throug...

Page 15: ... to remove it Fig 17d How to replace the grille 1 While aligning the top edge of the grille with the frame move the grille horizontally and insert the top and bottom into the frame 2 Press the grille firmly with your hand to ensure no gap exists between the frame and grille 3 Tighten the 6 screws And fix the removed covers in place 4 Grasp the sections near the front panel arms on both sides and h...

Page 16: ...ring diagram 2 Provide a power outlet to be used exclusively for each unit with a power supply disconnect and cir cuit breaker for overcurrent protection provided in the exclusive line 3 To prevent possible hazards due to insulation failure the unit must be grounded 4 Each wiring connection must be done tightly and in accordance with the wiring system diagram Wrong wiring may cause the unit to mis...

Page 17: ...tdoor units Electrical noise may affect the operation To avoid the risk of electric shock each air conditioner unit must be grounded For the installation of a grounding device please observe local electrical codes Grounding is necessary especially for units using inverter circuits in order to release charged electricity and electrical noise caused by high tension Otherwise electrical shock may occ...

Page 18: ...the right arm 3 Remove the screw on the right side cover plate and open the cover Fig 25 4 Route the inter unit wiring from the back of the indoor unit and pull it toward the front for connec tion Fig 26a 26b 5 Connect the inter unit wiring to the corresponding terminals on the terminal plate Fig 26a 26b while referring to the wiring diagram 6 Be sure to secure the wiring with the provided clamp W...

Page 19: ...the terminal screw 4 Shape the loop wire properly place it on the termi nal plate and fix it securely with the removed termi nal screw using a screwdriver For stranded wiring 1 Cut the wire end with a cutting pliers then strip the insulation to expose the stranded wiring about 3 8 10 mm and tightly twist the wire ends Figs 30 and 31 2 Using a screwdriver remove the terminal screw s on the terminal...

Page 20: ...t the indoor unit so it is securely seated on the rear panel Fig 36 3 Carefully bend the tubing if necessary to run along the wall in the direction of the outdoor unit and then tape as far as the fittings See Caution on page 25 The drain hose should come straight down the wall to a point where water runoff won t stain the wall 4 Connect the refrigerant tubing to the outdoor unit After performing a...

Page 21: ...in hose Slide the drain hose fully onto the drain pan outlet It will be easy to slide when water is added Check that the screw holes in the drain bracket and the drain pan outlet are aligned and securely in contact then fasten them with the screw After attaching the drain hose check that it is attached securely Fig 40b Drain cap Use a Phillips screwdriver to push the drain cap in firmly If it is d...

Page 22: ...nfirm that the gap is appropriate less than 2 mm 3 11 Drain Hose a The drain hose should be slanted downward to the outdoors Fig 44 b Never form a trap in the course of the hose c If the drain hose will run in the room insulate the hose with insulation so that chilled condensation will not damage furniture or floors Fig 45 Foamed polyethylene or its equivalent is recom mended NOTE WARNING Risk of ...

Page 23: ...tions are completed check that all connections are correct as shown in the wiring sys tem diagram 4 Be sure to ground the unit according to your local codes 4 2 Routing the Tubing and Wiring The tubing and wiring can be extended out in 3 direc tions front rear and right Use a nipper or similar tool to cut out the knockout holes for the inter unit control wiring outlet power wiring outlet and tubin...

Page 24: ...e tool Figs 49a and 49b Use RIDGID or equivalent A good flare should have the following characteristics inside surface is glossy and smooth edge is smooth tapered sides are of uniform length 5 3 Caution before Connecting Tubes Tightly a Be sure to apply a sealing cap or water proof tape to prevent dust or water from getting into the tubes before they are used b Be sure to apply refrigerant lubrica...

Page 25: ...turn Fig 55 3 Clamp the tubing bundle to wall using 1 clamp approx every 47 120 cm Do not wind the armoring tape too tightly since this will decrease the heat insulation effect Also be sure the con densation drain hose splits away from the bundle and drips clear of the unit and the tubing 5 7 Finishing the Installation After finishing insulating and taping over the tubing use sealing putty to seal...

Page 26: ...for evacuation Table 7 Hi Lo Indoor unit Outdoor unit Manifold valve Exclusively for R410A Pressure gauge Vacuum pump Charging hose Exclusively for R410A Vacuum pump adapter Exclusively for R410A with reverse flow prevention Fig 57 CAUTION Be sure to use a manifold valve for air purging If it is not avail able use a stop valve field sup ply for this purpose The Hi knob of the manifold valve must a...

Page 27: ...lightly to release the pressure Then remove the hose 11 Fasten the valve cap on the wide tube service port securely with an adjustable wrench or box wrench Next mount the valve cap on the service valve and tighten it to 170 lbs in 200 kgf cm with a torque wrench This process is very important to prevent gas from leaking from the system 12 Test run the air conditioner See next page 13 While the air...

Page 28: ...R lamp and on the main unit blinking Fig 59c IWHU PLQXWHV WKH V VWHP VKLIWV LQWR FRROLQJ RSHUD tion and cool air will start to be felt Cooling mode test run is unaffected by the room temperature 3 Press the ON OFF operation button of the remote con troller again to stop the test run Fig 59a 4 Finally press the ACL Reset button of the remote con troller to release it from Test Run mode to return to...

Page 29: ...ide tube valve stem Then quickly stop the unit 5 Disconnect all gauges and hoses and replace the valve caps as they were before Basic Functions of the Service Valves The basic functions of the service valves are given in Table 8 below Action Narrow Tube Service Valve 2 Way Wide Tube Service Valve 3 Way CLOSED Fully OPEN Fully OPEN Shipping Operating and test running the air conditioner Measuring p...

Page 30: ...om the air conditioner In the path of the air conditioner s airstream Where it may become extremely hot or cold Where it may be subject to electrical or magnetic interference Where there is an obstacle between the remote con troller and the air conditioner since a check signal is sent from the remote controller every 5 minutes 7 1 Mounting on a Wall Before mounting the remote controller press the ...

Page 31: ...with a pointed object such as the tip of a pen After 5 seconds release the ACL button first then release the QUIET and 1HR TIMER buttons oP 1 Test Run appears blinking in the remote controller clock display area 4 Each time the 1HR TIMER button is pressed the display changes as shown below Press this button 3 times to change the display to oP 7 Address setting Fig 64 5 oP 7 has now been selected f...

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