York YKHC 18 User manual

Cassette
YKHC 18 to 48
SERVICE MANUAL
YKHC 18 · YKHC 24 · YKHC 30 · YKHC 36 · YKHC 48
SM-YKHC-18-48GB 03-07

How to read the model?
Y K H C 24 F S B A A A
Range:
F = Floor standing
H = High wall
M = Master range
P = Portable
Y = YORK
R = Everest front
Refrigerant type:
A = R22
B = R407C
C = R410A
Capacity Btu/h
Generation:
A = First
R = New remote
Voltages:
A =
(Out) 220-240/1/50 - (In) 220-240/1/50
C = (Out) 380/3/50 - (In) 220-240/1/50
Indoor options:
A = Standard
J = Bio Screen filter
** Omit for outdoor units
Outdoor options:
A = Standard
B = Low Ambient Kit
C = Power outdoor
* Omit for indoor units
Indoors:
A = Free matching multi
S = Single
T = Duct High Static
U = Duct standard case
Compressor type:
A = AC Inverter
D = DC Inverter
F = Fixed
M = Multi
* * *
Family:
A = Efficiency Ultra
E = Eco Ultra
H = Alps
J = Atlas
K = Cassette
L = Ultra
M = Multi Ultra
R = Multi Inverter
V = Inverter Ultra
U = Ducted unit
O = Floor / Ceiling
Type:
C = Set - Cooling only
D = Outdoor - Cooling only
E = Indoor - Cooling only
H = Set - Heat pump
J = Outdoor Heat pump
K = Indoor Heat pump
M = Multi Ultra
R = Multi Inverter
V = Inverter Ultra
U = Ducted unit
O = Floor / Ceiling

1
Four-way Cassette Type
Part1. Product features
1) Low operation noise
---Streamline plate ensures quietness
---Creates natural and comfortable environment
2) Fresh air make life more healthy and comfortable.
3) Efficient cooling
---Equal, fast and wide—range cooling
Four-way airflow
4) The adoption of the most advanced 3- Dimensional Screw fan
---Reduces the air resistance passing through
---Smoothes the air flow
---Makes air speed distribution to the heat exchange uniform
3- Dimensional Screw fan
5) Improvement for easy installation and maintenance
---Little space is required for installation into a shallow ceiling
---Because of the compactness and weight reduction of the main unit and panel, all models can be installed
without a hoist

2
Part2. Specication
Model YKHC-18 YKHC-24
zH-V-hPylppusrewoP 1,220-240V,50Hz 1,220-240V,50Hz
Capacity Btu/h 2400018000
Capacity kW 7.15.3
WtupnI 25601900
AtnerrucdetaR 12.28.8
Cooling
h.W/utBREE 9.6 9.6
h/utByticapaC 2730020500
Capacity kW 8.06.0
WtupnI 25001900
AtnerrucdetaR 118.8
Heating
h.W/utBPOC 10.910.7
h/LlavomeRerutsioM 2.41.8
Wnoitpmusnoctupni.xaM 33002300
Atnerruc.xaM 15.311.7
AtnerrucgnitratS 6045
Model PA290X3CS-4MU1 C-SBN303H8D
Type ROTARY SCROLL
Brand TOSHIBA SANYO
Supplier TOSHIBA
(Guangdong) SANYO(Dalian)
h/utByticapaC 2457418362
WtupnI 24401855
A)ALR(tnerrucdetaR 11.48.6
Locked rotor Amp(LRA) A 8580
Thermal protector INNER INNER
FuroticapaC 50 50
Compressor
lmliotnaregirfeR 750 950
Model YDK45-4F YDK55-6
Brand WELING WELING
WtupnI 12063
FuroticapaC 3.52.5
Indoor fan motor
nim/r)ol/ih(deepS 680/600930/830
Number of rows 2 2
Tubepitch(a)x row pitch(b) mm 21 13.37 21 13.37
mmgnicapsniF 1.3 1.3
Fin type (code) Hydrophilic
aluminium
Hydrophilic
aluminium
Tube outside dia.and type mm Ø7, innergroove
tube
Ø7, innergroove
tube
Indoor coil
Coil length x height x width mm 210 26.71185 1950 126 26.74
m)oL/iH(wolfriaroodnI 3/h 1050/900860/760
)A(Bd)oL/iH(levelesionroodnI 43/40 43/40

3
Dimension (W*H*D)(body) mm 580 254 580 840 240 840
Packing (W*H*D)(body) mm 750 340 750 1020 330 930
Net/Gross weight(body) kg 21/30 36/46
Dimension (W*H*D)(panel) mm 650 30 650 950 40 950
Packing (W*H*D)(panel) mm 715 115 715 1030 145 1030
Indoor unit
Net/Gross weight(panel) kg 3/5 6/11
Model YDK53-6K YDK53-6H
Brand WELLING WELLING
Input W 130 130
Capacitor uF 2.5 3
Outdoor fan
motor
Speed r/min 750 800
Number of rows 2 2
Tube pitch(a)x row pitch(b) mm 25.4 22 25.4 22
Fin spacing mm 1.8 1.5
Fin type (code) Hydrophilic
aluminium
Hydrophilic
aluminium
Tube outside dia.and type mm Ø9.53,
innergroove tube
Ø9.53,
innergroove tube
Coil length x height x width mm 775 660 44 850 810 44
Outdoor coil
Number of circuits 3 4
mwolfriaroodtuO 3/h 2400 3000
Outdoor noise level dB(A) 48 55
Dimension(W*H*D) mm 845 695 335 895 860 330
Packing (W*H*D) mm 965 847 395 1000 985 410
Outdoor unit
Net/ Gross weight kg 55/58 79/90
Refrigerant type/Quantity g R410A/2050 R410A/2600
Design pressure (high side/low side) MPa 4.2/2.5 4.2/2.5
Liquid side mm(inch) 6.35 (1/4) 9.53 (3/8)
Gas side mm(inch) 12.7 (1/2) 16 (5/8)
Max. pipe length m 30 30
Refrigerant
piping
Max. dierence in level m20 20
Operation temp 17~30 17~30
Ambient temp -7~45 -7~45
Application area m234~49 40~56
Qty’per 20’& 40’Fcl Pieces 56/123/140 30/63/66
Notes: 1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB;
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB;
3. Actual noise level may dier, depending on the room structure, etc, since these noise values are from an
anechoic room.

4
Model YKHC-30 YKHC-36 YKHC-48
Power supply Ph-V-Hz 3,380V,50Hz 3,380V,50Hz 3,380V,50Hz
Capacity
Btu/h 30000 36000 48000
Capacity
kW 8.8 10.5 14
Input W 3250 3700 4700
Rated current A 5.5 6.5 8.2
Cooling
EER Btu/W.h 9.3 9.6 9.6
Capacity Btu/h 32000 39000 52000
Capacity
kW 9.4 11.4 15.2
Input W 3250 3350 4900
Rated current A 5.5 5.8 8.6
Heating
COP Btu/W.h 10.9 11.5 10.6
MoistureRemoval L/h 3.0 3.0 4.8
Max. input consumption W 4620 4620 5870
Max.current A 8.5 8.5 10.7
Startingcurrent A 31 31 41
Model C-SBN303H8D C-SBN303H8D C-SBN373H8D
Type SCROLL SCROLL SCROLL
Brand SANYO SANYO SANYO
Supplier
SANYO(Dalian) SANYO(Dalian) SANYO(Dalian)
Capacity Btu/h 33500 33500 48123
Input W 3650 3650 4750
Rated current(RLA) A 6.58 6.58 8.22
Locked rotor Amp(LRA)
A 65 65 82
Thermal protector

INNER INNER INNER
Capacitor uF / / /
Compressor
Refrigerant oil ml 1700 1700 1700
Model

YDK56-6 YDK56-6 YDK56-6
Brand

WELLING WELLING WELLING
Input W 137 137 137
Capacitor uF 3 3 3
Indoor fan
motor
Speed(hi/lo) r/min 670/565 670/565 670/565
Number of rows

2 2 2
Tubepitch(a)x row pitch(b)
mm 2113.37 2113.37 2113.37
Finspacing mm 1.3 1.3 1.3
Fin type (code)

Hydrophilic
aluminium
Hydrophilic
aluminium
Hydrophilic
aluminium
Tube outside dia.and type
mm Ø7, innergroove
tube
Ø7, innergroove
tube
Ø7, innergroove
tube
Indoor coil
Coil length x height x width
mm 195016826.74 195016826.74 195016826.74
Indoor air flow (Hi/Lo) m3/h 1600/1420 1600/1420 1600/1420
Indoor noise level (Hi/Lo) dB(A) 47/44 47/44 47/44

5
Dimension (W*H*D)(body) mm 840310840 840310840 840310840
Packing (W*H*D)(body) mm 1020400930 1020400930 1020400930
Net/Gross weight(body) kg 40/50 40/50 40/50
Dimension (W*H*D)(panel)
mm 95040950 95040950 95040950
Packing (W*H*D)(panel)
mm 10301451030 10301451030 10301451030
Indoor unit
Net/Gross weight(panel)
kg 6/11 6/11 6/11
Model

YDK250-6D-WL YDK250-6D-WL YDK65-6WL;
YDK65-6F
Brand

WELLING WEILING WELLING
Input W 307 307 138+156
Capacitor uF 10 10 3.52
Outdoor fan
motor
Speed r/min 740 740 800
Number of rows

2 2 2
Tube pitch(a)x row pitch(b)
mm 25.422 25.422 25.422
Finspacing
mm 1.7 1.7 1.8
Fin type (code)

unhydrophilic
aluminium
unhydrophilic
aluminium
hydrophilic
aluminium
Tube outside dia.and type
mm Ø9.53,
innergroove tube
Ø9.53,
innergroove tube
Ø9.53,
innergroove tube
Coil length x height x width
mm 95591544 95591544 715122044
Outdoor coil
Number of circuits

8 8 4
Outdoor air flow m3/h 8 5000 5000
Outdoor noise level dB(A) 5000 57 58
Dimension(W*H*D) mm
57 990960360 9401245360
Packing (W*H*D) mm 990960360 11201090435 10201370435
Outdoor unit
Net/ Gross weight kg 11201090435 101/106 110/125
Refrigeranttype/Quantity
g R410A/3100 R410A/3100 R410A/4000
Design pressure (high side/low side)
MPa 4.2/2.5 4.2/2.5 4.2/2.5
Liquid side mm(inch)
12.7 (1/2) 12.7 (1/2) 12.7 (1/2)
Gas side mm(inch)
19 (3/4) 19 (3/4) 19 (3/4)
Max. pipe length m 30 30 30
Refrigerant
piping
Max. difference in level
m 20 20 20
Operation temp

17~30 17~30 17~30
Ambient temp

-7~45 -7~45 -7~45
Applicationarea m
250~75 60~85 80~105
Qty’per 20’& 40’Fcl Pieces 25/55/62 25/55/62 24/52/55
Notes: 1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB;
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB;
3. Actual noise level may differ, depending on the room structure, etc, since these noise values are from an

6
anechoic room.
Part 3. Noise level
FOUR-WAY CASSETTE TYPE
Microphone
1.0m
12.000~24,000 btu/h 30,000~48,000 btu/h
Octave band center frequency £¨ Hz £©
Sound pressure level dB
£¨
0dB=0.0002
|Ì
bar
£©
Audibility limits of
continuous white
sound
Octave band center frequency£¨Hz£©
Sound pressure level dB£¨
0dB=0.0002|Ì bar£©
Audibility limits of
continuous white
sound

7
Part4. Velocity & temperature distribution
Discharge angle 60º
Airflow velocity
Temperature
Part5. Operation range
Ensure the operating temperature is in allowable range.
Ambient emp.(¡ã C)
Heating
STD
3024
17
17
-7
6
Indoor temp.(¡ã C)
Indoor temp.(¡ã C)
17
-7
17
35
52
45
30
Cooling
Ambient emp.(¡ã C)
STD
24

8
Part6. Capacity table
Model: YKHC 12-18
COOLING

OUTDOOR CONDITIONS
Indoor
Conditions

21ºC 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Total capacity kW 5.12 4.90 4.72 4.45 4.27 4.14 4.01
Sensitive capacity kW 4.10 3.92 3.78 3.56 3.42 3.31 3.21
21ºC D
15ºC W Input kW. 1.20 1.37 1.54 1.71 1.88 2.05 2.22
Total capacity kW 5.61 5.36 5.17 4.88 4.68 4.53 4.39
Sensitive capacity kW 4.49 4.29 4.13 3.90 3.74 3.63 3.51
24ºC D
17ºC W Input kW. 1.26 1.44 1.62 1.81 1.99 2.17 2.35
Total capacity kW 6.10 5.83 5.62 5.30 5.09 4.93 4.77
Sensitive capacity kW 4.88 4.66 4.49 4.24 4.07 3.94 3.82
27ºC D
19ºC W
Input kW. 1.33 1.52 1.71 1.90 2.09 2.28 2.47
Total capacity kW 7.01 6.70 6.46 6.10 5.85 5.67 5.49
Sensitive capacity kW 5.61 5.36 5.17 4.88 4.68 4.53 4.39
32ºC D
23ºC W
Input kW. 1.53 1.75 1.97 2.19 2.40 2.62 2.84
Model: YKHC 12-18
HEATING OUTDOOR CONDITIONS
Indoor
Conditions
24ºC D
18ºC W
12ºC D
11ºC W
7ºC D
6ºC W
4ºC D
3ºC W
0ºC D
-1ºC W
-5ºC D
-6ºC W
-7ºC D
-8ºC W
-15ºC D
-16ºC W
Capacity kW 7.20 5.76 4.80 4.32 4.08 3.60 3.36 3.12
15ºC Input kW. 2.28 1.82 1.52 1.44 1.37 1.29 1.22 1.06
Capacity kW 8.10 6.48 5.40 4.86 4.59 4.05 3.78 3.51
18ºC Input kW. 2.57 2.05 1.71 1.62 1.54 1.45 1.37 1.20
Capacity kW 9.00 7.20 6.00 5.40 5.10 4.50 4.20 3.90
20ºC Input kW. 2.85 2.28 1.90 1.81 1.71 1.62 1.52 1.33
Capacity kW 9.90 7.92 6.60 5.94 5.61 4.95 4.62 4.29
22ºC Input kW. 3.14 2.51 2.09 1.99 1.88 1.78 1.67 1.46
Capacity kW 11.70 9.36 7.80 7.02 6.63 5.85 5.46 5.07
27ºC Input kW. 3.71 2.96 2.47 2.35 2.22 2.10 1.98 1.73