Kaisai KOU-12HDN1 User manual

Service Manual
2010

MLCAC-UTSM-2010-10 Contents
Contents i
Part 1 General Information ................................................................................................. 1
Part 2 Indoor Units .............................................................................................................. 7
Part 3 Outdoor Units ......................................................................................................... 86
Part 4 Installation ............................................................................................................ 124
Part 5 Control................................................................................................................... 135
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.

MLCAC-UTSM-2010-10 General Information
General Information 1
Part 1
General Information
1. Model Names of Indoor/Outdoor Units ..........................2
2. External Appearance.......................................................3
2.1 Indoor Units................................................................................. 3
2.2 Outdoor Units.............................................................................. 4
3. Nomenclature...................................................................5
4. Features............................................................................6

Model Names of Indoor/Outdoor Units MLCAC-UTSM-2010-10
2 General Information
1. Model Names of Indoor/Outdoor Units
1.1 Indoor Units
R410A (capacity multiplied by 1000Btu/h)
Type
Function
12
18
24
30
36
48
60
New Four-way cassette
Cooling and heating
√
√
Four-way cassette
Cooling and heating
√
√
√
√
√
√
Duct
Cooling and heating
√
√
√
√
√
√
√
Ceiling & floor
Cooling and heating
√
√
√
√
√
√
√
Console
Cooling and heating
√
√
1.2 Outdoor Units
Model of outdoor unit and corresponding indoor unit
Universal Outdoor unit Model
Compressor type
Compressor Brand
Matched indoor units
KOU-12HDN1 Rotary DC Inverter GMCC
KCA2-12HRDN1-Q
KTB-12HWDN1
KUB-12HRDN1
KFA-12HRDN1
KOUA-18HDN1-C0 Scroll DC Inverter Shenyang SANYO
KCA2-18HRDN1-Q
KTB-18HWDN1
KUB-18HRDN1
KCC-18HRDN1
KFA-18HRDN1
KOUB-24HDN1 Rotary DC Inverter HITACHI
KTB-24HWDN1
KUB-24HRDN1
KCC-24HRDN1
KOU-30HDN1 Rotary DC Inverter MITSUBISHI
KTB-30HWDN1
KUB-30HRDN1
KCC-30HRDN1
KOU-36HDN1 Rotary DC Inverter MITSUBISHI KTB-36HWDN1
KUB-36HRDN1
KCC-36HRDN1
KOUB-36HDN1-R Rotary DC Inverter MITSUBISHI
KOU-48HDN1
Rotary DC Inverter
MITSUBISHI
KTB-48HWDN1
KUB-48HRDN1
KCC-48HRDN1
KOUB-48HDN1-R Rotary DC Inverter MITSUBISHI
KOUA-60HRDN1 Scroll DC Inverter MITSUBISHI
KTB-60HWDN1
KUB-60HRDN1
KOUD-60HDN1-R
Scroll DC Inverter
MITSUBISHI
KCC-60HRDN1

MLCAC-UTSM-2010-10 External Appearance
General Information 3
2. External Appearance
2.1 Indoor Units
Duct
Ceiling & Floor
Four-way Cassette
New Compact Four-way cassette
Console

External Appearance MLCAC-UTSM-2010-10
4 General Information
2.2 Outdoor Units
KOU-12HDN1
KOUA-18HDN1-C0
KOUB-24HDN1
KOU-30HDN1, KOUB-36HDN1-R
KOU-36HDN1, KOU-48HDN1, KOUB-48HDN1-R
KOUA-60HRDN1, KOUD-60HDN1-R

MLCAC-UTSM-2010-10 Nomenclature
General Information 5
3. Nomenclature
3.1 Indoor Unit
M U B - 18 H R D N1
Refrigerant Type
N1 R410A
DC Inverter
Control Mode
R Remote Control
Function Code
C cooling Only
H cooling & Heating
Capacity (¡ Á1000Btu/h)
Product Series
A First Time Design BSecond Time Design
C Third Time Design
Product Category
C Cassette Type
T Duct Type
U Ceiling & Floor Type
H High Static Pressure Duct Type
Midea
3.2 Outdoor Unit
M O U D - 60 H D N1- R
Power Supply
R 380~415V, 3N, 50Hz
-- 220~240V, 1N, 50Hz
Refrigerant
N1 R410A
DC Inverter
Function Code
C cooling only Hcooling & heating
Capacity (¡ Á1000Btu/h)
Product Series
A Time A Designed BTime B Designed
C Time C Designed D Time D Designed
Universal Outdoor Unit
O Outdoor unit U Universal
Midea
FConsole Type

Features MLCAC-UTSM-2010-10
6 General Information
4. Features
4.1 Universal outdoor unit design
Indoor unit with the same capacity can match with the same outdoor unit.
4.2 High efficiency and energy saving.
Thanks to the DC inverter technology and optimized piping system, the EER and COP of whole
series can easily reach A-class.
4.3 Low noise and low starting current.
Thanks to the DC inverter technology, the system can work with low noise, and very small starting
current.
4.4 Intelligent refrigerant adjustment technology.
Throttle part is made up of capillary and electronic expansion valve (EXV). The outdoor unit can
output the most accurate capacity in any condition.
4.5 Working in cooling mode under -15℃.
Outdoor unit built-in with low ambient kit, it can control the outdoor unit’s fan and cooling can be
performed throughout the year for computer rooms, banquet halls, etc. Wide operation range
covers outdoor temperatures as low as -15℃for cooling.
4.6 Indoor & outdoor unit’s power supply is separate.
4.7 All indoor units have network control function.
4.8 All indoor units have Auto-restart function.

MLCAC-UTSM-2010-10 Indoor Units
Indoor Units 7
Part 2
Indoor Units
New Four-way Cassette Type (Compact)...........................8
Four-way Cassette Type....................................................18
Duct Type............................................................................35
Ceiling & Floor Type ..........................................................53
Console Type .....................................................................72

New Four-way Cassette Type (Compact) MLCAC-UTSM-2010-10
8 New Four-way Cassette Type (Compact)
New Four-way Cassette Type (Compact)
1. Features............................................................................9
2. Specifications ................................................................10
3. Dimensions ....................................................................11
4. Service Space.................................................................11
5. Wiring Diagrams ............................................................12
6. Air Velocity and Temperature Distributions.................13
7. Electric Characteristics.................................................14
8. Sound Levels .................................................................14
9. Accessories....................................................................15
10. The Specification of Power.........................................15
11. Field Wiring ..................................................................16

MLCAC-UTSM-2010-10 Features
New Four-way Cassette (Compact) 9
1. Features
(1) Low operation noise
---Streamline plate ensures quietness
---Creates natural and comfortable environment
(2) Efficient cooling
---Equal, fast and wide—range cooling
(3) 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
(4) 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
(5) 3600Air Flow Panel
3600 air outlet makes equal,fast ad wide range cooling
(6) Inside E-box design
The E-box is simply and safely build inside tge indoor unit, of witch ceiling side is 600mm*600mm. It is
convenient to install and maintain. Checking the control part is easy, you only need to open the air return
grille.

Specifications MLCAC-UTSM-2010-10
10 New Four-way Cassette (Compact)
2. Specifications
Model KCA2-12HRDN1-Q KCA2-18HRDN1-Q
Code 220042300070 220042400150
Power supply
V-ph-Hz
220~240-1-50
220~240-1-50
Cooling
Capacity Btu/h 13680-12000-4800 19260-18000-6120
Input
W
1250-980-310
2070-1630-550
Current
A
5.0
8.2
EER 3.26 3.25
Heating
Capacity Btu/h 15340-13000-4550 20800-20000-4800
Input
W
1390-1090-370
2020-1600-560
Current A 5.8 8.2
COP
3.63
3.62
Indoor fan motor
Model YDK15-6P YDK37-4P
Qty 1 1
Input W 47.1/31.1/26.9 80/46/32
Capacitor uF 1.5 /450V 2 /400-450V
Speed(Hi/Mi/Lo) r/min 780/540/430 1000/710/570
Indoor coil
Number of rows 1 2
Tube pitch(a)×row pitch(b) mm 21×13.37 21×13.37
Fin spacing mm 1.3 1.3
Fin type (code) Hydrophilic aluminum Hydrophilic aluminum
Tube outside dia. and type mm φ7Inner grooved copper tube φ7Inner grooved copper tube
Coil length × height × width
mm 1380×210×13.37 1370×210×26.74
Number of circuits 2 4
Indoor air flow (Hi/Mi/Lo) m
3
/h 683/530/510 800/710/560
Indoor noise level (sound pressure) dB(A) 42/41/38 42/41/38
Indoor unit
Dimension (W×H×D)(body) mm 570×260×570 570×260×570
Packing (W×H×D)(body) mm 655×290×655 655×290×655
Dimension (W×H×D)(panel) mm 647×50×647 647×50×647
Packing (W×H×D)(panel) mm 705×113×705 705×113×705
Net/Gross weight(body) kg 16/19 18/21
Net/Gross weight(panel) kg 3/5 3/5
Refrigerant type R410A R410A
Design pressure MPa 4.2/1.5 4.2/1.5
Refrigerant piping Liquid side/ Gas side mm φ6.4/φ12.7 φ6.4/φ12.7
Drainage water pipe diameter mm ODφ25 ODφ25
Controller R05/BGE (standard) R05/BGE (standard)
Operation temperature ℃17-30 17-30
Notes: 1. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. Piping: 7.5m(horizontal)
2. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. Piping: 7.5m(horizontal)
3. Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic
room.

MLCAC-UTSM-2010-10 Dimensions
New Four-way Cassette (Compact) 11
3. Dimensions
4. Service Space

Wiring Diagrams MLCAC-UTSM-2010-10
12 New Four-way Cassette (Compact)
5. Wiring Diagrams
KCA2-12HRDN1-Q
KCA2-18HRDN1-Q

MLCAC-UTSM-2010-10 Air Velocity and Temperature Distributions
New Four-way Cassette (Compact) 13
6. Air Velocity and Temperature Distributions
Airflow velocity
Temperature

Electric Characteristics MLCAC-UTSM-2010-10
14 New Four-way Cassette (Compact)
7. Electric Characteristics
Model Indoor Units
Power
Supply
Hz MFA Min. Max. MFA
KCA2-12HRDN1-Q 50 220-240V 198V 254V 20
KCA2-18HRDN1-Q 50 220-240V 198V 254V 15
Remark:
MFA: Max. Fuse Amps. (A)
8. Sound Levels
1.0m
FOUR-WAY CASSETTE TYPE
Microphone
Model
Noise level dB(A)
H M L
KCA2-12HRDN1-Q 42 41 38
KCA2-18HRDN1-Q 42 41 38

MLCAC-UTSM-2010-10 Accessories
New Four-way Cassette (Compact) 15
9. Accessories
Name Shape Quantity
1. Drain joint (Be provided in outdoor unit.)
1
2. Remote controller
1
3. Remote controller holder
1
4. Mounting screw(ST2.9×10-C-H)
2
5. Alkaline dry batteries (AM4)
2
6. Owner's manual
1
7. Installation manual
1
10. The Specification of Power

Field Wiring MLCAC-UTSM-2010-10
16 New Four-way Cassette (Compact)
11. Field Wiring
KCA2-12HRDN1-Q
KCA2-18HRDN1-Q