Page 1
Installation & Owner’s Manual
MODELS
YUHC 18-60
YUKC 07-18
MINISPLIT
AIR BLOWER
EN 035M00065-000
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Page 2
CONTENTS
Safety Precautions ...................................................3
Part Names ................................................................4
Technical Specifications ..........................................
5
Outdoor Unit Dimensions ........................................ 9
Preparation Before Installation .............................10
Installation ...............................................................10
Condensate Drainage ............................................14
Refrigerant Piping Connects ................................. 15
Fan Speeds .............................................................16
Wiring Diagrams .....................................................
17
Defrosting Operation ..............................................20
Service and Maintenance ......................................20
Operation Tips ........................................................
21
Trouble Shooting Guide .........................................
22
Declaration of Conformity .....................................23
Please read this installation
manual carefully before starting
the installation. It will tell you
necessary information.
Quality POLICY
We will continuously strive to satisfy
our customers with consistent reliability in product, service and support
through superior quality, service
culture and distinctive technology.
Standard
Refrigerant R-410A
Model 18-24 30-60
Set YUHCxxFUAAAR YUHCxxFUAACR
Outdoor YUJCxxFU-AAR YUJCxxFU-ACR
Indoor YUKCxxFU-AAR YUKCxxFU-ACR
With Low Ambient Kit
Refrigerant R-410A
Model 18-24 30-60
Set YUHCx xFUBAAR YUHCx xFUBACR
Outdoor YUJCx xFU-AAR YUJCx xFU-ACR
Indoor YUKCxxF U-AAR YUKCxxF U-ACR
Multi Inverter R-410A
50Hz/1Ph
Outdoor RRJCxxAA-AAA
Indoor YUKCxxAA-AAR
Refrigerant DC INVERTER R-410A
Model 18-24 36-48 60
Set YUHCxxDUBAAR-K YUHCxxDUBACR-K YUHCxxDSBACR-K
Outdoor YUJCxxDU-BAR YUJCxxDU-BCR YUJCxxDS-BCR
Indoor YUKCxxDU-BAR-K YUKCxxDU-BCR-K YUKCxxDS-BCR-K
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ENGLISH
EXTENDED PARTS
1. Refrigerant Pipe : See Technical Specification
2.
Pipe insulation material (Polyethylene foam 9 mm thick)
3. Vinyl tape
4. Putty
REQUIRED TOOLS
1. Screw driver 9. Manifold gauge
2. Hexagonal wrench 10. Gas leak detector
3. Torque wrench 11. Vacuum pump
4. Spanner 12. Pipe clamp
5. Reamer 13. Pipe cutter
6. Hole core drill 14. Flare tool set
7. Tape measure 15. Electrical circuit tester
8. Thermometer
SAFETY PRECAUTIONS
• Please read this installation manual carefully before starting installation of the unit.
• This air conditioning system contains refrigerant under pressure, rotating parts and electrical connection which
may be dangerous and can cause injury. Installation and maintenance of this air conditioning system should only
be carried out by trained and qualified personnel.
• After unpacking, please check the unit carefully for possible damage.
• Before undertaking any work on the unit, make sure that the power supply has been disconnected.
WARNING & CAUTIONS
Never put hands or objects into the Air Outlet of indoor or outdoor units. These
units are installed with a fan running at high speed. To touch the moving fan will
cause serious injury.
DANG ER
To avoid the risk of serious electrical shock, never sprinkle or spill water or liquids on unit.
DANG ER
To prevent electric shock, turn off the power or disconnect the power supply
plug before beginning any cleaning or other routine maintenance. Follow the
directions for cleaning in this manual.
WARNING
Do not use liquid cleaners or aerosol cleaners, use a soft and dry cloth for
cleaning the unit. To avoid electric shock, never attempt to clean the unit by
sprinkling water.
WARNING
Do not use caustic household drain cleaners in the unit. Drain cleaners can
quickly destroy the unit components (drain pan and heat exchanger coil, etc.)
WARNING
For proper performance, operate the unit in temperature and humidity ranges
indicated in this manual. If the unit is operated beyond these conditions, it may
cause abnormal functions of the unit or dew dripping from the unit.
WARNING
Ventilate the room regularly while the air conditioner is in use, especially if there
is also a gas appliance in use in this room. Failure to follow these directions may
result in a loss of oxygen in the room.
WARNING
Do not attempt to service the unit yourself. This unit has no user serviceable
components. Opening or removing the cover will expose you to dangerous
voltage. Turning off the power supply will not prevent potential electric shock.
DANG ER
Do not attempt to install this unit by yourself. This unit requires installation by
qualified persons.
CAUT IO N
Danger
No
Thinner
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I
J
A
F
G
C
H
E
N
M
L
K
B
E
D
PART NAMES
■ INDOOR & OUTDOOR UNIT
A. Indoor unit
B. Outdoor unit
C. Remote controller
D. Air-in
E. Air-out
F. Air inlet
G. Connecting pipe
H. Drain hose
All the pictures in this manual are for explanation
purpose only. They may be sightly different from the
air conditioner you purchased. The actual shape shall
prevail.
OUTDOOR UNIT
INDOOR UNIT
■ DISPLAY PANEL
I. Infrared signal receiver
J. Emergency button
K. Running indicator
L. Timer indicator
M. Frost indicator (cooling and heating type)
or fan indicator (cooling only type)
N. Pump indicator
Display Panel
NOTE
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TECHNICAL SPECIFICATIONS
Technical Specifications : Duct Type YUHC “R-410A” -50Hz
Models
Indoor
Unit
YUKC
18 24 30 36 48 60
Outdoor
Unit
YUJC
18 24 30 36 48 60
Power Supply
V/Ph/Hz 220-240/1/50 380/3/50
Ph 1 1 3 3 3 3
Power Consumption W 1,900/1,900 2,560/2,500 3,250/3,250 3,700/3,350 4,700/4,900 6,000/6,000
Running Current A 8.8/8.8 12.2/11 5.5/5.5 6.5/5.8 8.2/8.6 9.8/9.8
Refrigerant Type
R-410A
Refrigerant Charge gr 2,050 2,600 3,100 3,100 4,000 4,200
Noise level
Indoor
dB(A)
38 38 44 44 46 47
Outdoor 48 55 57 57 58 58
Indoor Unit
Power Supply
V/Ph/Hz 220-240/1/50
Ph 1 1 1 1 1 1
Fan
Air flow m3/h 1,160 1,460 2,070 2,070 2,400 2,800
Input Power W 117 170 118 118 118 227
Running Current A 0.53 0.77 0.54 0.54 0.54 1.03
Dimension
Height mm 300 300 300 300 300 320
Width
mm 1,000 1,000 1,350 1,350 1,350 1,350
Depth mm 800 800 800 800 800 800
Weight
kg 36 38 48 48 50 70
System Operation Control Wireless Control with LCD Display
Outdoor Unit
Power Supply
V/Ph/Hz 220-240/1/50 380/3/50
Ph 1 1 3 3 3 3
Compressor
Qty 1 1 1 1 1 1
Compressor Type
Rotary Scroll
Dimension
Height mm 695 860 960 960 1,245 1,245
Width
mm 845 895 990 990 940 940
Depth mm 335 330 360 360 360 360
Weight
kg 55 79 101 101 110 110
Piping
Type Flare + Nuts
Pipe Size
Suction inch 1/2 5/8 3/4 3/4 3/4 3/4
Liquid inch 1/4 3/8 1/2 1/2 1/2 1/2
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Technical Specification: Ducted Dc Inverter “YUHC” R-410A, 50Hz.
Model
Set YUHC18DUBAAR-K YUHC24DUBAAR-K YUHC36DUBACR-K YUHC48DUBACR-K YUHC60DSBACR-K
Indoor YUKC18DU-BAR-K YUKC24DU-BAR-K YUKC36DU-BCR-K YUKC48DU-BCR-K YUKC60DS-BCR-K
Outdoor YUJC18DU-BAR YUJC24DU-BAR YUJC36DU-BCR YUJC48DU-BCR YUJC60DS-BCR
Power supply V-Ph-Hz 220~240-1-50 220~240-1-50 380V~3~50Hz 380V~3~50Hz 380V~3~50Hz
Cooling
Capacity Btu/h 18,000 24,000 36,000 48,000 60,000
Input W 1,570 2,130 3,260 4,250 4,840
Rated current A 7 10 9 11 11
Heating
Capacity Btu/h 21,000 28,000 40,000 53,000 62,000
Input W 1,630 2,190 3,120 4,140 4,800
Rated current A 7 10 8 11 11
Max. input consumption W 2,600 2,800 3,560 4,750 5,950
Max. current A 10 11 10 13 16
Starting current A 1 1 1 1 1
Compressor
Type
DC Inverter Rotary DC Inverter Scroll
Input W 1,650 1,650 3,665 3,665 3,665
Rated current (RLA)
A 8 8 8 8 8
Locked rotor
Amp (LRA)
A 28 28 28 28 28
Protector Thermal
Capacitor µF 50 50 50 50 50
Refrigerant oil ml 480 480 500 500 500
Indoor fan motor
Type AC Motor
Input W 117 170 118 324 160
Capacitor µF 3 7 3 10 10
Speed (Hi/Me/Lo)
r/min 900/800/690 1,100/1,020/900 820/695/620 870/770/700 870/770/700
Indoor coil
Number of rows 3 3 3 3 3
Fin spacing mm 2 2 2 2 2
Fin type Hydrophilic aluminium
Tube outside dia.
mm Ø9.52
Material Type
Innergroove tube
Coil length x
height x width
mm 800×254×66 800×254×66 1,150×254×66 1,150×254×66 1,150×305×66
Indoor air flow (Hi/Me/Lo)
m3/h 1,020/870/700
1,275/1,170/1,030 2,070/1,950/1,860 2,400/2,300/2,200 2,800/2,700/2,600
Indoor external static pressure (Hi) Pa 40 40 70 70 96
Indoor noise level (Hi/Me/Lo) dB(A) 50/-/- 53/-/- 49/47/44 51/47/44 52/48/46
Indoor unit
Dimension
(WxHxD)
mm 1,095×805×290 1,095×805×290 1,350×298×800 1,350×320×800 1,350×320×800
Packing
(WxHxD)
mm 1,205×940×370 1,205×940×370 1,555×940×370 1,555×440×940 1,555×440×940
Net/Gross weight
kg 38/45 38/45 48/57 70/80 70/80
Outdoor fan
motor
Input W 129 150 307 150×2 150×2
Capacitor µF 3 3 10 3.5×2 3.5×2
Speed r/min 770 800 740 800 800
Outdoor coil
Number of rows 2 2 1 1 1
Fin spacing mm 2 2 2 2 2
Fin type Hydrophilic aluminium
Tube outside dia.
mm Ø9.52
Tube Material
Innergroove tube
Coil length x
height x width
mm 630×660×44 620×813×44 955×915×22 715×610×22 1150×305×66
Outdoor air flow
m3/h 2,400 3,000 5,000 6,000 6,000
Outdoor noise level dB(A) 56 55 57 58 58
Outdoor unit
Dimension
(WxHxD)
mm 840×677×310 894×860×302 990×960×340 940×1,245×340 940×1245×340
Packing
(WxHxD)
mm 965×770×395 1,043×915×395 1,120×1015×435 1,058×1300×435 1,058×1,300×435
Net/Gross weight
kg 62.5/66.5 72/76.5 106/111 117/126 112/127
Refrigerant R-410A g 1,650 2,200 2,600 3,550 4,200
Throttle type EXV&Capillary
Refrigerant piping
Liquid side/
Gas side
mm 6.35/12.7 9.53/16 9.53/16 9.53/16 9.53/16
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TECHNICAL SPECIFICATION: EVEREST MULTI INVERTER “YUKC-RRJC” 50Hz
Indoor Unit Duct Type YUKC 07-18
Model YUKC 07AA-AAR YUKC 09AA-AAR YUKC 12AA-AAR YUKC 18AA-AAR
Power supply Ph-V-Hz 1Ph, 220-240V~, 50Hz 1Ph, 220-240V~, 50Hz 1Ph, 220-240V~, 50Hz
1Ph, 220-240V~, 50Hz
Capacity
Cooling Capacity
BTU/h 7,000 9,000 12,000 18,000
Heating Capacity
BTU/h 8,000 11,000 14,000 21,000
Power input w 40 40 40 65
Indoor fan
motor
Input W 38 38 38 63
Capacitor µF 1.0µF/450V 1.0µF/450V 1.0µF/450V 2.5µF/450V
Speed (Hi/Mi/Lo) r/min 735/650/560 735/650/560 735/650/560 930/830/660
Indoor coil
Number of rows 2 2 2 2
Fin spacing mm 1.5 1.5 1.5 1.7
Fin type Hydrophilic aluminium
Tube outside dia.
mm Ø7 Ø7 Ø7 Ø9.53
Tube Material Innergroove tube
Coil length x height
x width
mm 700x26x350 700x26x350 700x26x350 800x254x44
Number of circuits 4 4 4 3
Indoor air flow (Hi/Mi/Lo) m3/h 480/410/360 480/410/360 580/480/400 660/550/480
Indoor noise level (Hi/Mi/Lo) dB(A) 35/32/30 36/33/30 38/35/33 40/38/35
Pipe size Liquid side/ Gas side mm Ø6.35/Ø9.53 Ø6.35/Ø9.53 Ø6.35/Ø12.7 Ø6.35/Ø12.7
Indoor unit
Dimension (W*H*D) mm 955×210×385 955×210×385 955×210×385 1,301X210X385
Packing (W*H*D) mm 1,114x277x469 1,114x277x469 1,114x277x469 1,114x277x469
Net/Gross weight Kg 15/19 15/19 15/19 18/22
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OPERATING TEMPERATURE
Mode
Temperature
Cooling operation Heating operation Drying operation
Room temperature 17°C~32°C 0°C~30°C 17°C~30°C
Outdoor temperature 21°C~43°C -7°C~24°C 11°C~43°C
CAUTIONS
1. If air conditioner is used outside of the above conditions, certain safety protection features may come into operation
cause the unit to function abnormally.
2. Room relative humidity less than 80%. If the air conditioner operates in excess of this figure, the surface of the
air conditioner may attract condensation. Please set the vertical air flow louver to its maximum angle (Vertically to
the floor), and set HIGH fan mode.
3. Optimum performance will be achieved within these operating temperature.
Outdoor Unit Multi Inverter RRJC 18-27
Model RRJC 18AA-AAA RRJC 27AA-AAA
Indoor Units Combination Single Double Single Double Treble
Power supply Ph-V-Hz 1Ph, 220-240V~, 50Hz 1Ph, 220-240V~, 50Hz
Cooling
Capacity
Btu/h 7,000~12,000 18,000 7,000~12,000 16,000~24,000 27,000
W 2,050~3,517 5,275 2,000~3,500 4,690~7,000 7,913
Input W 1,000~1,300 1,813 1,000~1,300 2,570~2,850 2,806
Rated current A 4.8~6.5 11.5 4.8~6.5 11.7~13.5 13.5
Heating
Capacity
Btu/h 9,000~14,000 21,000 10,000~14,000 24,000~27,000 30,000
W 2,638~4,103 6,155 2,900~4,100 7,000~7,900 8,792
Input W 1,300~1,600 2,038 1,300~1,600 2,100~2,750 2,739
Rated current A 6.3~7.8 11.0 6.3~7.8 11.0~13.2 13.2
Max. input W 3,200 3,200
Max. current A 20 20
Compressor
Type
Rotary inverter Rotary inverter
Input W 1,690 1,690
Rated current (RLA) A 11.6 11.6
Locked rotor Amp (LRA)
A 60 60
Thermal protector Internal Internal
Capacitor µF 85µF/250V 85µF/250V
Refrigerant oil ml 750 750
Outdoor fan
motor
Input W 148 148
Capacitor µF 3 3
Speed r/min 775 775
Outdoor coil
Number of rows 2 2
Fin spacing mm 1.7 1.7
Fin type Hydrophilic aluminium Hydrophilic aluminium
Tube outside dia.
mm Ø9.53 Ø9.53
Tube Material
Innergroove tube Innergroove tube
Coil length x height x width mm 776×660×22 776×660×22
Number of circuits 2 2
Outdoor air flow
m3/h 2,500 2,500
Outdoor noise level dB(A) 60 60
Outdoor
unit
Dimension (WxHxD) mm 845X695X335 845X695X335
Packing (WxHxD) mm 965X772X405 965X772X405
Net/Gross weight kg 71/74 72/76
Refrigerant Type R-410A
g 2,100 2,250
Refrigerant
piping
Liquid side/ Gas side mm Ø6.35/Ø9.53 3 X Ø6.35/Ø9.53
Transfer Connector (9.53→12.7) mm 2 2
Max. refrigerant pipe length m 15 (each indoor unit) 15 (each indoor unit)
Max. difference in level m 10 (each indoor unit) 10 (each indoor unit)
Remark : The above design and specifications are subject to change without prior notice for product improvement.
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OUTDOOR UNIT DIMENSIONS
845
990
624
181.4
336.4
400
1,245
360
940
650
695
960
360
235
860
330
125
335
351.2
135
560.1
141.5
313
300
895
590
163
301.5
YUJC 18 YUJC 24
YUJC 30-36 YUJC 48-60
RRJC 18-27
310
300
520
688
790
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PREPARATION BEFORE INSTALLATION
• Before doing any work, check the interior power supply cord and the main breaker capacity are sufficient and the
installation area is sufficient and complies with the requirements.
• Check that the power supply available agrees with name plate voltage.
•
Electrical work, wiring and cables must be performed in compliance with national and local wiring codes and standard.
• Do not use the extension cables. In the case extended cables are needed, use the terminal block.
INSTALLATION
■ Installation place
The indoor unit must be installed such that there is no short circuit of the cool discharge. Comply to the installation
clearance recommended. Do not put the indoor unit where there is direct sunlight on unit. Make sure the location is
suitable for piping and drainage.
YUKC 07-12
INDOOR UNIT
Fresh
air inlet
Ø100
100
148
380
268
915
870
Ø25
Drain por
t
Liquid Side Ø9.53
Gas Side Ø9.0
Refrigerant pipe
210
63
380
175
220
55
Air Outlet
210
87
102
870
25
715
Refrigerant pipe
>500mm >500m
m
>250mm
A
H
B
E
C
D
MODEL
18
24
36
48
A B C D E H
840
894
990
940
560
590
624
600
335
333
366
376
360
355
396
400
310
302
340
340
677
860
960
1,245
R-410A
mm
REMARK
DC Inverter R-410A
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Capacity (Btu/h) A B C D E F G H I J K M N
12000-18000
1082 1052 1115 1087 1408
12.7 6.35
— — — — — —
24000 16 9.53
30000-48000 1350 1400 1380 1400 1430 19 12.7 252 35 930 310 3 4
Install the main body:
Main body: 800
300
720
630
160
Connecting point of
refrigerant pipe
(Liquid side ØG)
Connecting point of
refrigerant pipe
Connecting point of drain pipe
(Gas side ØF)
Ceiling hole 470
450
Panel 500
Dust proof net
(Additional purchase)
Canvas air passage
(Additional purchase)
Panel
(Additional purchase)
298
100
30
335
285
120
440
Air outlet
N-Ø200
Main body : A
Distance between bolts: B
J=MxK
Hanging Screw bolt
4-M10 Site configuration
70
440-640
175
115
Ceiling hole: D
C
Panel: E
60
80
H
5
The positioning of ceiling hole and indoor unit and hanging screw bolt:
YUKC 18-48
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YUKC 60
The positioning of ceiling hole and indoor unit and hanging screw bolt:
Air outlet
N-Ø200
Main body : A
Distance between bolts: B
J=MxK
Hanging Screw bolt
4-M10 Site configuration
70
440-640
150
Ceiling hole: D
C
Panel: E
60
80
H
5
Capacity (Btu/h) A B C D E F G H I J K M N
60000 1350 1400 1380 1400 1430 19 12.7 252 35 930 310 3 4
When using a back-air installation, please refer to the following:
Back panel layout
A
B
205
300
I
I
Back panel layout
A
250
320
127
N-250x393.8
Main body: 800
300
720
630
Connecting point of cold
medium pipe
(Air side ØF)
Connecting point
of drain pipe
Ceiling hole 470
450
Panel 500
Dust proof net
(Additional purchase)
Canvas air passage
(Additional purchase)
Panel
(Additional purchase)
100
30
335
305
210
80
Entrances and exits
for communication
lines of indoor and outdoor units
155
12090
170
320
Ø125 Plank (inside)
(For air delivery from outside)
Fixed screw
Connecting point of cold
medium pipe
(liquid side ØG)
300
70
Install the main body:
Distance between bolts: 565
210
YUKC 18-48 YUKC 60
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OUTDOOR UNITS
• Keep this unit away from direct radiation of the sun or other heaters.
• If unavoidable, please cover it with a shelter.
• In places near coast or with a high attitude where the wind is violent, please install the outdoor unit against the wall
to ensure normal performance.
Use a baffle when necessary.
• In the case of extremely strong wind, please prevent the air from flowing backwards into the outdoor unit.
(Refer to chart 1)
• Locate the outdoor unit as close to the indoor unit as possible.
• The minimum distance between the outdoor unit and obstacles described in the installation chart does not mean
that the same is applicable to the situation of an airtight. Leave open two of three directions A, B, C.
CAUTIONS
Chart 1
NECESSARY ROOM FOR INSTALLATION AND MAINTENANCE
(Refer to chart 2, chart 3)
Remove the obstacles nearby to prevent the performance from being impeded by too little of air circulation.
The minimum distance between the outdoor unit and obstacles described in the installation chart does not mean that
the same is applicable to the situation of an airtight room. Leave open two of the three directions (A, B, C).
Chart 2 Chart 3
(Wall or obstacle)
Air inlet
>30 cm.
Air inlet
>30 cm.
Maintain channel
>60 cm.
Air outlet
Necessary width
Fix with bolt
>60 cm.
Deep foundation
>200 cm.
Strong wind
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• Outdoor heat pump unit : install the unit at least 10 cm above ground level to facilitate drainage of defrost water and
prevent accumulation of ice. In effect, defrost water can cause accumulation of ice under the unit during subfreezing
outdoor temperatures.
• In areas with heavy snowfallit is best to install the unit on wall supports.
•
In some regions, it is necessary to heat the bottom of the condensate drainage pan and the condensate drainage piping
to avoid ice formation, and resulting ice build-up in the fan compartment (heater strip must be at least 25 W/m).
COLD AREA RECOMMENDATION
OK
MOVING AND INSTALLING
• Since the gravity center of this unit is not at its physical center, so please be careful when lifting it with a sling.
• Never hold the air-in of the outdoor unit to prevent it from deforming.
Do not touch the fan with hands or other objects.
• Do not lean it more than 45°, and do not lay it sidelong.
• Please fasten the feet of this unit with bolts firmly to prevent it from collapsing in case of earthquake or strong
wind.
• Make concrete foundation of the size of 590 x 328. (Refer to chart 3)
Condensate drainage is provided on the unit. The connection is located at the rear.
To ensure correct condensate drainage, the drain line
must be installed with a gradient of at least 2% (2 cm per
meter) and without any upward slopes. An elbow trap at
least 50 mm in height must also be provided.
If possible, install a U bend fitted with an inspection cap.
Where the condensate lines from several units are joined
together, each individual outlet must be fitted with an
elbow trap. After routing and connecting condensate
lines, pour water into the collecting pan and check that it
drains correctly. An auxiliary condensate pump could be
installed in cases where drain lines cannot be routed the
correct gradient.
CONDENSATE DRAINAGE
Condensate drain connection
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■ Fixing and Piping
• Piping must be performed by qualified personnel
according to good refrigeration system practices.
• Piping materials and insulation materials must be of
refrigerant quality.
• Select the pipe diameters according to the size of
unit and cut the pipe to design length by using pipe
cutter.
• Install the flare nuts and flare the end of the pipes.
• Check that no foreign bodies are inside the piping.
• Align the central of the connection pipes and tighten
the flare nut.
• Fix piping with pipe clamps and check that any pipe
vibrations cannot be transmitted to the building
structure.
• Connect the pipe correctly.
• Do not apply the excessive torque.
• Use an appropriate bending tool to form curves and
avoid over-tightening the refrigerant tubes.
• To prevent heat loss, the two lines must be insulated
separately.
■ Maximum Piping Length
The suction line must have a 2% gradient up to the
compressor on horizontal sections.
Where piping lengths are unusually long and include a
large number of oil traps, it may be necessary to adjust
to compressor charge.
NOTES
Unit size 18 24 30 36 48 60
(m) 30 30 30 30 30 30
REFRIGERANT PIPING CONNECTIONS
■ Refrigerant charge to be added per extra
meter of piping length when more than 5
meters.
Prefabricated refrigerant piping is available as an accessory. If this is not used, piping and insulating materials
employed must be compatible with this type of installation.
The pre-charged outdoor unit does not require charging
if piping length is 5 m or less. However, the interconnect
ing piping and the indoor unit must be pumped down
before releasing R-410A refrigerant into them from the
outdoor unit.
1. Remove the cap from the service valve.
2. Connect the line to a vacuum pump and pump
down to 5 Pa.
3. When pump down is finished, wait 15 minutes
to detect potential circuit leakage. Open service
valves on the outdoor unit.
Outdoor unit
Indoor unit
Gas line
Liquid line
R-410A
*
Note:
The expansion device is located in the outdoor unit.
High pressure
Pressure tap
Manifold
Low pressure
Liquid valve
Gas valve
L
D
L
H
Unit size
Models
18 24 30 36 48 60
(g/m) 30 65 90 90 90 90
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Page 16
16
ENGLISH
FAN SPEEDS
For ducted installations, check air flow and static pressure
against values shown in the following diagrams.
Insufficient air flow can cause operating problems such
as icing which may damage the compressor in the
outdoor unit.
m
3
5 0
4 0
3 0
6 0
P a
9 0
8 0
7 0
2 0
1 1 0 0 1 2 0 0
1 0
7 0 0 80 0 9 0 0 1 0 0
0
m
3
1 0 0 0 1 1 0 0 1 2 0 0 1 3 0 0
2 0
1 4 0 0 1 5 0 0
1 0
5 0
4 0
3 0
6 0
P a
9 0
8 0
7 0
m
3
1 5 0 0 1 6 0 0 1 7 0 0 1 8 0 0
2 0
1 9 0 0 2 0 0 0
1 0
5 0
4 0
3 0
6 0
P a
9 0
8 0
7 0
m
3
1 8 0 0 1 9 0 0 2 00 0 2 1 0 0
2 0
2 2 0 0 2 3 00
1 0
5 0
4 0
3 0
6 0
P a
9 0
8 0
7 0
m
3
2 8 0 01 4 0 0 1 6 0 0 1 8 0 0 2 0 0 0 2 6 0 0
2 0
2 2 0 0 2 4 0 0
1 0
5 0
4 0
3 0
6 0
P a
9 0
8 0
7 0
High speed
Low speed
High speed
Low speed
High speed
Low speed
High speed
Low speed
Low speed
High speed
Model 18 Model 24
Model 30-36 Model 48
Model 60
Note : 07-18K for free blow application.
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Page 17
17
ENGLISH
■ Wiring
Prepare the power source for exclusive with the air conditioner.
The supply voltage must comply with the rated voltage of the air conditioner. The plug socket shall be accessible after
installation.
Remark: All the wiring must be based on the wiring nameplate which is shown on the model.
Model 18
• Never modify the unit by removing any of the safety guards or by bypassing any of the safety interlock swithces.
• Connect the connecting cable correctly and connect the connecting cable to terminal as identified with their
respective marks.
• Do not scratch the conductive core & inner insulator of power supply cables and do not deform or smash on
the surface of cables.
NOTE
Remark per EMC Directive 89/336/EEC
To prevent flicker impressions during the start of the compressor (technical process), following installation conditions
do apply.
1. The power connection for the air conditioner has to be done at the main power distribution.
The distribution has to be of a low impedance, normally the required impedance reaches at a 32 A fusing
point.
2. No other equipment has to be connected with this power line.
3. For detailed installation acceptance, please refer to your contract with the power supplier if restrictions do apply
for products like washing machines, air conditioner or electrical ovens.
4. For power details of the air conditioner, refer to the rating plate of the product.
5. For any question, contact your local dealer.
• Perform the wiring with sufficient capacity. Installation places legally require a short circuit isolator to be attached
to prevent electrical shock.
• Do not extend the power cable code by cutting.
• Power voltage should be in the range of 90%-110% of rated voltage.
• The plug of the air conditioner takes a grounding leg, and clients should use a grounding socket so that the air
conditioner can be grounded efficiently.
• If the power cord is damaged, replacement should be conducted by qualified technician or a serviceman.
CAUTIONS
WIRING DIAGRAMS
CAUTIONS
■ Electrical work
Model Power source
Circuit
breaker/
fuse
Wiring
size
18000 Btu/h 220-240V - 50Hz 30/25A 3 x 1.5 mm
2
24000 Btu/h 220-240V - 50Hz 40/25A 3 x 2.5 mm
2
30000 Btu/h 380V 3N - 50Hz 20/15A 5 x 1.5 mm
2
36000-60000 Btu/h 380V 3N - 50Hz 25/15A 5 x 2.5 mm
2
NOTE
The supply voltage must be consistent with the rate voltage
of the air conditioner.
L N 1
2(N)
3 4 T3E
1 N 3 4 T3E
220-240V/1Ph/50Hz
Power supply
Indoor Unit
Outdoor Unit
Model 24
L N 1 2 3 T3E
L N 1 N 3 T3E
Indoor Unit
Outdoor Unit
Power supply
A B C N 1 2 3
A B C N 1 2 3
Indoor Unit
Outdoor Unit
Model 30-60
380V/3Ph/50Hz
Power supply
220-240V/1Ph/50Hz
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18
ENGLISH
YUKC 07 YUKC 09
YUKC 12 YUKC 18
RRJC 18 RRJC 27
A/F IPM(PFC)
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Page 19
19
ENGLISH
P QX Y
(E)
Y/G
220-240V ( 3-core cable 3x2 .5mm )
2
220-240V (3-core cable 3x1 .0mm )
2
3-core she ild cable
INDOOR UNIT
L N
Power supply
Power suppl
y
For 18,000-24,000 Btu/h
1-Phase
1-Phas
e
380-415V (5-core cable 5x2 .5mm )
2
3-core sheil d cable
OUTDOOR UNIT
Power supply
3-Phase
220-240V (3-cor e cable 3x2.5mm )
2
Power supply
1-Phase
L3 NL2L1
For 36,000-60,000 Btu/h
DC Inverter R-410A
J368-EN.indd 19 2/1/07 9:41:34 AM
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20
ENGLISH
DEFROSTING OPERATION (Available for heating only)
1.
Condition to start defrosting: Units will switch to defrosting
mode when either of the following conditions is met.
a. Unit has been running under T3 < 0ºC for 40
minutes and T3 < -3ºC for 3 minutes.
b. Unit has been running at high temperature protection
mo de * f or 90 mi nu tes. (*High tempe rature
protection mode: when coil temperature of indoor
unit reaches 55°C, outdoor unit will turn off external
unit fan but still keep compressor running).
2. Condition to stop defrosting: Units will switch back to
heating mode when either of the following conditions
is met.
a. Unit has been running at defrosting mode for 10
minutes.
b. T3 > 20 ºC
Remark: T3 is coil temperature of outdoor units.
T3 (°C)
3 min
40 min
Heating mode Defrosting mode
Time
Elapsed
(min)
Starting Defrosting Mode under condition a.
SERVICE AND MAINTENANCE
The units are designed to operate for long periods of time with a minimum of maintenance. However, the following
operations must be performed regularly.
COMPONENT MAINTENANCE OPERATIONS RECOMMENDED FREQUENCY
Air filter 1 - Clean with a vacuum cleaner or tap gently
then wash in warm water (40°C) with a mild
detergent.
2 - Rinse and dry before replacing on unit.
3 - Never use petrol, alcohol or any other chemi
-
cal product.
Every month or more often if
necessary.
Unit casing 1 - Remove dust from the front panel with a soft
duster or wipe a damp cloth with a mild soap
solution.
2 - Never use petrol, alcohol or any other chemi-
cal product.
Every month or more often if
necessary.
Drain pan and evacu
-
ation piping
1 - Clean and check for obstructions.
Each season before start up.
Indoor / Outdoor coils 1 - Check condition and remove dust from be-
tween coil fins.
Each season before start up.
Compressor 1 - No maintenance required. —
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21
ENGLISH
OPERATION TIPS
The following events may occur during normal operation.
1. Protection of the air conditioner.
Compressor protection
• The compressor can not restart for 3 minutes after it stops.
Anti-cold air (Cooling and heating models only)
• The unit is designed not to blow cold air on HEAT mode, when the indoor heat exchanger is in one of the
following three situations and the set temperature has not been reached.
A) When heating has just starting.
B) Defrosting.
C) Low temperature heating.
• The indoor or outdoor fan stop running when defrosting (Cooling and heating models only).
Defrosting (Cooling and heating models only)
• Frost may be generated on the outdoor unit during heat cycle when outdoor temperature is low and humidity is
high resulting in lower heating efficiency of the air conditioner.
• During this condition air conditioner will stop heating operation and start defrosting automatically.
• The time to defrost may vary from 4 to 10 minutes according to the outdoor temperature and the amount of
frost buildup on the outdoor unit.
2. A white mist coming out from the indoor unit.
• A white mist may generate due to a large temperature difference between air inlet and air outlet on COOL mode
in an indoor environment that has a high relative humidity.
• A white mist may generate due to moisture generated from defrosting process when the air conditioner restarts
in HEAT mode operation after defrosting.
3. Low noise of the air conditioner.
• You may hear a low hissing sound when the compressor is running or has just stopped running.
This sound is the sound of the refrigerant flowing or coming to a stop.
• You can also hear a low “squeak” sound when the compressor is running or has just stopped running. This is caused
by heat expansion and cold contraction of the plastic parts in the unit when the temperature is changing.
• A noise may be heard due to louver restoring to its original position when power is first turned on.
4. Dust is blown out from the indoor unit.
This is a normal condition when the air conditioner has not been used for a long time or during first use of the
unit.
5. A peculiar smell comes out from the indoor unit.
This is caused by the indoor unit giving off smells permeated from building material, from furniture, or smoke.
6. The air conditioner turns to FAN only mode from COOL or HEAT (for cooling and heating models only)
mode.
When indoor temperature reaches the temperature setting on air conditioner, the compressor will stop automatically,
and the air conditioner turns to FAN only mode. The compressor will start again when the indoor temperature rises
on COOL mode or falls on HEAT mode (for cooling and heating models only) to the set point.
7. Dripping water may generate on the surface of the indoor unit when cooling in a high relatively humidity (relative
humidity higher than 80%). Adjust the horizontal louver to the maximum air outlet position and select HIGH fan
speed.
8. Heating mode (For cooling and heating models only)
The air conditioner draws in heat from the outdoor unit and releases it via the indoor unit during heating operation.
When the outdoor temperature falls, heat drawn in by the air conditioner decreases accordingly. At the same time,
heat loading of the air conditioner increases due to larger difference between indoor and outdoor temperature. If a
comfortable temperature can not be achieved by the air conditioner, we suggest you use a supplementary heating
device.
9. Auto-restart function
Power failure during operation will stop the unit completely. For the unit without Auto-restart feature, when the
power restores, the RUN indicator on the indoor unit starts flashing. To restart the operation, push the ON/OFF
button on the remote controller. For the unit with Auto-restart feature, when the power restores, the unit restarts
automatically with all the previous settings preserved by the memory function.
10.
Lightning or a car wireless telephone operating nearby may cause the unit to malfunction.
Disconnect the unit with power and then re-connect the unit with power again. Push the ON/OFF button on the
remote controller to restart operation.
J368-EN.indd 21 2/1/07 9:41:36 AM
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22
ENGLISH
TROUBLE SHOOTING GUIDE
Problem Probable cause Remedy
A. The air conditioner does not
run.
1. Power failure.
2. Fuse blown or circuit breaker
open.
3. Voltage is too low.
4. Faulty contactor or relay.
5. Electrical connections loose.
6. Thermostat adjustment too low
(in heating mode) or too high (in
cooling mode).
7. Faulty capacitor.
8. Incorrect wiring, terminal loose.
9. Pressure switch tripped.
1. Wait for power resume.
2. Replace the fuse or reset the
breaker.
3. Find the cause and fix it.
4. Replace the faulty component.
5. Retighten the connection.
6. Check thermostat setting.
7. Find the cause then replace ca
-
pacitor.
8. Check and retighten.
9. Find the cause before reset.
B. The outdoor fan runs but the
compressor will not start.
1. Motor winding cut or grounded.
2. Faulty capacitor.
1. Check the wiring and the compressor winding resistance.
2. Find the cause then replace capacitor.
C. There is insufficient heating
or cooling.
1. There is a gas leak.
2. Liquid and gas line insulated together.
3. The room was probably very hot
(cool) when you started the system.
1. Remove charge, repair, evacuate and recharge.
2. Insulate them separately.
3. Wait while unit has enough time
to cool the room.
D. The compressor runs con
-
tinuously.
1. Thermostat adjustment too low
(in heating mode) or too high (in
cooling mode).
2. Faulty fan.
3. Refrigerant charge too low, leak.
4. Air or incondensables in refriger
-
ant circuit.
1. Check thermostat setting.
2. Check condenser air circulation.
3. Find leak, repair and recharge.
4. Remove charge, evacuate and
recharge.
E. The compressor starts but
shuts down quickly.
1. Too much or too little refrigerant.
2. Faulty compressor.
3. Air or incondensables in refriger
-
ant circuit.
4. Changeover valve damaged or
blocked open (heat pump unit).
1. Remove charge, evacuate and
recharge.
2. Determine the cause and replace
compressor.
3. Remove charge, evacuate and
recharge.
4. Replace it.
F. Clicking sound is heard from
the air conditioner.
In heating or cooling operation any
plastic parts may expand or shrink
due to a sudden temperature change
in this event, a clicking sound may
occur.
In heating or cooling operation any
plastic parts may expand or shrink
due to a sudden temperature change
in this event, a clicking sound may
occur.
J368-EN.indd 22 2/1/07 9:41:37 AM
Page 23
CM Choi
Shipping Manager
The product complies with the harmonized European safety standards and harmonized EMC standards listed above.
We have internal production control system that ensures compliance between the manufacturer products and the technical documentation.
The product is CE mark.
We declare under our sold responsibility that the equipment follows the provisions of the Directives stated above.
Authorized Representative:
Type of Equipment
Brand Name
Type Designation
Application of Council
Directive (s)
The following harmonized standards have been applied:
Standard (s)
EN 60 335-1: 2002+A11
EN 60 335-2-40 : 2003
EN 50366 : 2003
EN 55 014-1/A2 : 2002
EN 55 104-2/A1 : 2001
EN 61000-3-2 : 2002
EN 61000-3-3 : 1995+A1
DECLARATION OF CONFORMITY
YORK International (Northern Asia) Ltd.
15/F., Tower II, World Trade Square, 123 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong
Telephone: (852) 2331 9286 Fax: (852) 2331 9840
Technical Service Division: Telephone: (852) 2331 9286 Fax: (852) 2304 0068
DECLARATION OF CONFORMITY
1. Isolate all sources of electrical supply to the unit including any control system supplies switched by the unit. Ensure that all points of electrical and
gas isolation are secured in the OFF position. The supply cables and gas pipework may then be disconnected and removed. For points of connection
refer to unit installation instructions.
2. Remove all refrigerant from each system of the unit into a suitable container using a refrigerant reclaim or recovery unit. This refrigerant may then be
reused, if appropriate, or returned to the manufacturer for disposal. Under No circumstances should refrigerant be vented to atmosphere. Where
appropriate, drain the refrigerant oil from each system into a suitable container and dispose of according to local laws and regulations governing
disposal of oily wastes.
3. Packaged unit can generally be removed in one piece after disconnection as above. Any fixing down bolts should be removed and then unit lifted from
position using the points provided and equipment of adequate lifting capacity. Reference MUST be made to the unit installation instructions for unit
weight and correct methods of lifting. Note that any residual or spilt refrigerant oil should be mopped up and disposed of as described above.
4. After removal from position the unit parts may be disposed of according to local laws and regulations.
INSTALLATION, REMOVAL AND DISPOSAL
Read the Manual Risk of electric shock Unit is remotely controlled and
may start without warning
Air Conditioners
YORK
YUKC-YUJC 12/18/24/30/36/48/60FU
This product contains refrigerant under pressure, rotating parts, and electrical connections which may be a danger and cause injury!
All work must only be carried out by competent persons using suitable protective clothing and safety precautions.
EMC Directive 89/336/EEC, Low Voltage Directive 73/23/EEC and Machine Safety Directive: MSD 98/37/CE
J368-EN.indd 23 2/1/07 9:41:38 AM
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