Sanyo SAP–K301AH,SAP–C301AH Technical & Service Manual

TECHNICAL & SERVICE MANUAL

SAP–K301AH + SAP–C301AH

FILE NO.

REFERENCE NO. SM700459

Indoor Unit Outdoor Unit

SPLIT SYSTEM AIR CONDITIONER

SAP–K301AH

SAP–C301AH

Destination: Australia

Outdoor Model No. Product Code No.

SAP–C301AH–S 1 852 071 35

Indoor Model No. Product Code No.
SAP–K301AH–S 1 852 071 34

i

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 product 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
improper 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.

• Do not supply power to the unit until all wiring and
tubing are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and
these instructions when wiring. Improper connections
and inadequate grounding can cause accidental
injury or death.

• Ground the unit following local electrical codes.

• Connect all wiring tightly. Loose wiring may cause
overheating at connection points and a possible fire
hazard.

WARNING

CAUTION

WARNING

When Transporting

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

When Installing…

…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.

…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

• Use the flare method for connecting tubing.

• Apply refrigerant lubricant to the matching surfaces
of the flare and union tubes before connecting them,
then tighten the nut with a torque wrench for a leak­free connection.

• Check carefully for leaks before starting the test run.

When Servicing

• Turn the power off at the main power box (mains)
before opening the unit to check or repair electrical
parts and wiring.

• Keep your fingers and clothing away from any
moving parts.

• Clean up the site after you finish, remembering to
check that no metal scraps or bits of wiring have
been left inside the unit being serviced.

Others

• Ventilate any enclosed areas when installing or
testing the refrigeration system. Escaped refrigerant
gas, on contact with fire or heat, can produce
dangerously toxic gas.

• Confirm upon completing installation that no
refrigerant gas is leaking. If escaped gas comes in
contact with a stove, gas water heater, electric room
heater or other heat source, it can produce
dangerously toxic gas.

CAUTION

Table of Contents

Page

1. OPERATING RANGE ............................................................................................................................... 1

2. SPECIFICATIONS

2-1. Unit Specifications.......................................................................................................................... 2

2-2. Major Component Specifications.................................................................................................... 3

2-3. Other Component Specifications.................................................................................................... 5

3. DIMENSIONAL DATA............................................................................................................................... 6

4. REFRIGERANT FLOW DIAGRAM .......................................................................................................... 8

5. PERFORMANCE DATA

5-1. Performance charts ....................................................................................................................... 9

5-2. Air Throw Distance Chart .............................................................................................................. 10

5-3. Cooling Capacity ........................................................................................................................... 11

5-4. Heating Capacity ........................................................................................................................... 12

6. ELECTRICAL DATA

6-1. Electrical Characteristics................................................................................................................ 13

6-2. Electric Wiring Diagram.................................................................................................................. 14

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection ............................................................................................................... 16

7-2. Remote Control Unit Installation Position....................................................................................... 18

7-3. Wiring instructions.......................................................................................................................... 19

8. FUNCTION

8-1. Room Temperature Control ........................................................................................................... 20

8-2. Dry Operation ................................................................................................................................ 22

8-3. Automatic Switching between Cooling and Heating ...................................................................... 22

8-4. Freeze Prevention ......................................................................................................................... 23

8-5. Overload Prevention ...................................................................................................................... 23

8-6. Cold draft Prevention ..................................................................................................................... 24

8-7. Defrosting Operation ..................................................................................................................... 25

8-8. Outdoor Fan Speed Control .......................................................................................................... 27

9. TROUBLESHOOTING

9-1. Check before and after troubleshooting ........................................................................................ 28

9-2. Air conditioner does not operate .................................................................................................... 29

9-3. Some part of air conditioner does not operate .............................................................................. 33

9-4. Air conditioner operates, but abnormalities are observed ............................................................. 35

9-5. If a sensor is defective ................................................................................................................... 37

10.CHECKING ELECTRICAL COMPONENTS

10-1. Measurement of Insulation Resistance .......................................................................................... 38

10-2. Checking Continuity of Fuse on PCB Ass'y.................................................................................... 39

10-3. Checking Motor Capacitor ............................................................................................................. 39

11.MAINTENANCE

11-1. Changing Address of Remote Control in Indoor Unit ..................................................................... 40

INSTRUCTION MANUAL ........................................................................................................ 41

APPENDIX

ii

1

1. OPERATING RANGE

Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.

Cooling

Maximum 32°C D.B. / 23°C W.B. 43°C D.B.

Minimum 19°C D.B. / 14°C W.B. 19°C D.B.

Heating

Maximum 27°C D.B. 24°C D.B. / 18°C W.B.

Minimum 16°C D.B. – 8°C D.B. / – 9°C W.B.

2

2. SPECIFICATIONS

2-1. Unit Specifications

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Remarks: Rating conditions are:

Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.

Outdoor air temperature 35°C D.B. / 24°C W.B.

Heating: Indoor air temperature 20°C D.B.

Outdoor air temperature 7°C D.B. / 6°C W.B.

Power Source 240 V Single phase 50Hz
Voltage rating V 240

Cooling Heating

Capacity

kW 8.00 9.00

BTU/h 27,300 30,700

Air circulation (High) m

3

/h 1,110 1,170
Moisture removal (High) Liters/h 3.4 —
Available voltage range V 216 to 264
Running amperes A 13.0 12.0
Power input W 3,100 2,850
Power factor % 99 99
C.O.P. W/W 2.58 3.16
Compressor locked rotor amperes A 63
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer 1-hour OFF / 12-hour ON or OFF
Fan speeds Indoor / Outdoor 3 and Auto / Auto(Hi, Lo)

Airflow direction (Indoor)

Horizontal Manual

Vertical Auto
Air filter Washable, Anti-Mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment g R22 / 2,800
Refrigerant control Capillary tube

Operation sound

Indoor – Hi / Me / Lo dB-A 47 / 42 / 38 47 / 41 / 38

Outdoor – Hi dB-A 54 54
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5

Refrigerant tube

Narrow tube mm (in.) 9.52 (3/8)
diameter

Wide tube mm (in.) 15.88 (5/8)
Refrigerant tube kit / Accessories Optional / Hanging wall bracket

Indoor Unit Outdoor Unit

Unit dimensions Height mm 330 735

Width mm 1,140 940

Depth mm 228 340
Package dimensions Height mm 325 826

Width mm 1,231 1,016

Depth mm 406 416

Weight Net

kg 18.0 71.0

Shipping

kg 20.0 77.0

Shipping volume m

3

0.16 0.35

Dimensions & Weight Features Electrical Rating Performance

Indoor Unit SAP–K301AH
Outdoor Unit SAP–C301AH

3

2-2. Major Component Specifications

2-2-1. Indoor Unit

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Part No. POW–K301AH
Controls Microprocessor
Control circuit fuse 250 V – 3.15 A

Remote Control Unit RCS–2HS4E

Type Cross-flow
Q´ty ... Dia. and length mm 1 ... ø100 / L847.4
Fan motor model ... Q´ty KFG4X–31B5P–S ... 1

No. of poles .... Cool / Heat rpm (240V, High) 4 ... 1,270 / 1,280

Nominal output W 30
Coil resistance (Ambient temp. 20°C) Ω WHT – BRN : 103.3 WHT – VLT : 32.5

VLT – ORG : 75.5 ORG – YEL : 28.6

YEL – BLK : 18.9 BLK – PNK : 48.0

– : –
– : –

Safety

Type Thermal protector

devices Operating temp. Open °C 130 ±8

Close Automatic reclosing

Run capacitor µF 1.0

VAC 440
Type Stepping motor
Model ... Q´ty MP24GA2 ... 2
Rating DC 12 V
Coil resistance (Ambient temp. 20°C) kΩ Each terminals (1–2, 1–3, 1–4, 1–5) : 400 ± 7%
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.3
Face area m2 0.214

Heat

Exch. Coil

Flap Motor Fan & Fan Motor

Circuit

Board

Ass´y

Indoor Unit SAP–K301AH

4

2-2-2. Outdoor Unit

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

Circuit Board Ass´y POW–C301AH-A

Type Rotary (Hermetic)
Compressor model C–R240H5S 80669545
Nominal output W 2,400
Compressor oil ... Amount cc 4GSD–T or SAY–56T ... 1,350
Coil resistance (Ambient temp. 25°C) Ω C – R : 0.944

C – S : 1.732

Type Internal protector

Safety

Overload relay —

devices Operating temp. Open °C Automatic opening

Close °C Automatic reclosing

Operating amp.(Ambient temp. 25°C) —

Run capacitor ... Q´ty µF 35.0 ... 2

VAC 400 ... 2

Crank case heater 240V 25W
Type Propeller
Q´ty ... Dia. mm 1 ... ø 460
Fan motor model ... Q´ty KFG6S–91D5P–S ... 1

No. of poles .... Cool / Heat rpm (240V, High) 6 ... 780 / 760

Nominal output W 90

Coil resistance (Ambient temp. 20°C) Ω WHT – BRN :129.0

WHT – YEL : 57.4

YEL – PNK : 22.1

Safety

Type Thermal protector

devices Operating temp. Open °C 130 ± 8

Close Automatic reclosing

Run capacitor µF 6.0

VAC 440

Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.8
Face area m

2

0.497

External Finish Acrylic baked-on enamel finish

Heat

Exch. Coil

CompressorFan & Fan Motor

Outdoor Unit SAP–C301AH

2-3. Other Component Specifications

5

Fuse Cartridge type

Rating / Size 250V, 20A / ø6.4 x 30mm

Power Relay G7L-2A-TUB

Coil rating AC 200–240V, 50/60Hz
Coil resistance kΩ (at 23°C) ( 21 ± 15% )
Contact rating AC 220V, 25A

Thermistor (Air sensor) PBC–41E–S14

Resistance kΩ –20°C 40.1± 5% 20°C 6.5 ± 5%

–10°C 24.4 ± 5% 30°C 4.4 ± 5%

0°C 15.3 ± 5% 40°C 3.0 ± 5%

10°C 9.9 ± 5% 50°C 2.1± 5%

Thermistor (Coil sensor) PBC–41E–S14

Resistance kΩ –20°C 40.1± 5% 20°C 6.5 ± 5%

–10°C 24.4 ± 5% 30°C 4.4 ± 5%

0°C 15.3 ± 5% 40°C 3.0 ± 5%

10°C 9.9 ± 5% 50°C 2.1± 5%

4-way Valve (Solenoid coil) CHV-01AJ504D (Coil), CHV-0301 (Valve)

Coil rating AC 220–240V, 50Hz, 6W

Outdoor Unit SAP–C301AH

Thermistor (Room sensor) DTN-TKS128B

Resistance kΩ 25°C 5.0 ± 3%

Thermistor (Coil sensor) DTN-TKS131B

Resistance kΩ 0°C 15.0 ± 2%

Transformer (TR) ATR-J105-I

Rating Primary AC 230V, 50/60Hz

Secondary 19V, 0.526A
Capacity 10VA

Coil resistance Ω (at 21°C) Primary (WHT – WHT): 205 ± 10%

Secondary (BRN – BRN): 2.0 ± 10%

Thermal cut-off temp. 150°C

Indoor Unit SAP–K301AH

6

3. DIMENSIONAL DATA

Indoor Unit SAP–K301AH

174

Center of tubing
hole (2 places)

Narrow tube ø9.52(3/8")

Wide tube ø15.88 (5/8")

228

Remote control unit

172

61

48

135

330

1,140

48

Drain hose ø18

23

Unit : mm

7

Outdoor Unit SAP–C301AH

735

280

307

940

Unit : mm

Hole for anchor bolt ø13
Narrow tube service valve
ø9.52 (3/8

")

Wide tube service valve
ø15.88 (5/8

")

Refrigerant tubing outlet
Inter-unit wiring outlet
Power supply wiring outlet

400

380

20

50 50

340

110660170

1

6

5

4

3

2

1

6

5

5

4

4

3

2

6

Unit : mm

4. REFRIGERANT FLOW DIAGRAM

8

Insulation of Refrigerant Tubing

Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min. 8 mm.

After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.

IMPORTANT

CAUTION

Wide tube

Thickness:
Min. 8 mm

Insulation

Narrow tube

Thickness:
Min. 8 mm

Indoor Unit SAP–K301AH Outdoor Unit SAP–C301AH

Compressor

4-way
valve

Accumulator

Wide tube
service
valve

Wide tube

O.D.
ø15.88 mm
(5/8 ")

Narrow
tube
service
valve

Narrow tube

O.D.
ø9.52 mm
(3/8")

Heat exchanger

Heat exchanger

Cooling cycle

Heating cycle

Indoor unit Outdoor unit

Capillary tube

Muffler

Strainer

5. PERFORMANCE DATA

5-1. Performance charts

Indoor Unit SAP–K301AH
Outdoor Unit SAP–C301AH

9

Outdoor
fan speed

HighLow

1.28 (12)

1.18 (11)

1.08 (10)

0.98 ( 9 )

0.89 ( 8 )

0.79 ( 7 )

0.69 ( 6 )

25 30 35 40 45 50

Outdoor inlet air D.B. temp. (°C)

Low pressure at wide tube serveice valve MPa (kgf/cm

2

G)

0.59 ( 5 )

0.49 ( 4 )

0.39 ( 3 )

■ Cooling Characteristics ■ Heating Characteristics

3.24 (32)

2.95 (30)

2.85 (28)

2.65 (26)

2.46 (24)

2.26 (22)

2.06 (20)

–5 0 5 10 15 20

Outdoor inlet air D.B. temp. (°C)

High pressure at wide tube serveice valve MPa (kgf/cm

2

G)

1.87 (18)

1.67 (16)

1.47 (14)
25

18
17
16
15
14
13
12
11
10

25 30 35 40 45 50

Outdoor inlet air D.B. temp. (°C)

Operating current (A)

19

Outdoor
fan speed

HighLow

Low

17
16
15
14
13
12
11
10

9 9

–5 0 5 10 15 20

Outdoor inlet air D.B. temp. (°C)

Operating current (A)

25

18

19

27 1520

27 1520

Indoor inlet air

D.B. temp. (°C)

Indoor inlet air

D.B. temp. (°C)

Indoor inlet air

D.B. temp. (°C)

Indoor inlet air

D.B. temp. (°C)

Outdoor
fan speed

High

Low

Outdoor
fan speed

High

32
27
21

32
27
21

High

Overload prevention operates to protect the air conditioner when outdoor ambient temperature reaches extremely
high in heating mode. (Refer to “8-5 Overload prevention”)

● ...... Points of Rating condition

Black dots in above charts indicate the following rating conditions.

Cooling: Indoor air temperature 27°C D.B./19°C W.B. Heating: Indoor air temperature 20°C D.B.

Outdoor air temperature 35°C D.B./24°C W.B. Outdoor air temperature 7°C D.B./6°C W.B.

NOTE

5-2. Air Throw Distance Chart

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 20°C
Fan speed : High

Heating

Horizontal distance (m)

Axis air velocity (m/s)

Vertical distance (m)

Room air temp. : 27°C
Fan speed : High

Cooling

0

1

2

3

4

0 1 2 3 4 5 6 7 8 9

: Flap angle 0° , : Axis air velocity 0°
: Flap angle 30°, : Axis air velocity 30°

0

1

2

3

4

0 1 2 3 4 5 6 7 8 9

: Flap angle 45° , : Axis air velocity 45°
: Flap angle 60° , : Axis air velocity 60°

10

Indoor Unit SAP–K301AH

11

5-3. Cooling Capacity

240V Single Phase 50Hz

Indoor Unit SAP–K301AH
Outdoor Unit SAP–C301AH

RATING CAPACITY 8.00 kW
AIR FLOW RATE 1110

m3/h

EVAPORATOR CONDENSER
ENT. TEMP. °C OUTDOOR AMBIENT TEMP. °C

W.B. D.B. 30 35 40 43

TC 7.36 7.01 6.58 6.06

CM 2.53 2.72 2.91 3.12

21 SHC 4.83 4.63 4.40 4.13

15 23 SHC 5.34 5.15 4.91 4.64

25 SHC 5.85 5.66 5.43 5.15
27 SHC 6.36 6.17 5.94 5.66
29 SHC 6.87 6.68 6.45 6.06
31 SHC 7.36 7.01 6.58 6.06

TC 7.90 7.52 7.07 6.50

CM 2.61 2.80 2.99 3.20

21 SHC 4.31 4.11 3.89 3.61

17 23 SHC 4.82 4.63 4.40 4.12

25 SHC 5.33 5.14 4.91 4.63
27 SHC 5.84 5.65 5.42 5.14
29 SHC 6.35 6.16 5.93 5.65
31 SHC 6.87 6.67 6.44 6.16

TC 8.40 # 8.00 7.52 6.92

CM 2.69 2.88 3.08 3.29

21 SHC 3.75 3.56 3.33 3.06

19 23 SHC 4.26 4.07 3.84 3.57

25 SHC 4.78 4.58 4.35 4.08
27 SHC 5.29 5.09 4.86 4.59
29 SHC 5.80 5.60 5.38 5.10
31 SHC 6.31 6.11 5.89 5.61

TC 8.90 8.48 7.97 7.34

CM 2.76 2.96 3.17 3.38

23 SHC 3.70 3.50 3.28 3.01

21 25 SHC 4.21 4.01 3.79 3.52

27 SHC 4.72 4.53 4.30 4.03
29 SHC 5.23 5.04 4.81 4.54
31 SHC 5.74 5.55 5.32 5.05

TC 9.43 8.90 8.34 7.75

CM 2.83 3.04 3.25 3.47

23 25 SHC 3.60 3.38 3.15 2.92

27 SHC 4.11 3.89 3.66 3.43
29 SHC 4.62 4.40 4.17 3.94
31 SHC 5.13 4.91 4.68 4.45

TC : Total Cooling Capacity (kW)
SHC : Sensible Heat Capacity (kW)
CM : Compressor Input (kW)

Rating conditions (#Mark) are

Outdoor Ambient Temp. 35°C D.B.
Indoor Unit Entering Air Temp. 27°C D.B. / 19°C W.B.

5-4. Heating Capacity

Indoor Unit SAP–K301AH
Outdoor Unit SAP–C301AH

–5 0 5

7

10 15

Outdoor temperature (°C D.B.)

0

10

20

30

40

50

60

70

80

90

100

110

120

Heating capacity ratio (%)

NOTE

1) … Point of Rating condition
Black dot in the chart indicate the following rating condition.

Indoor : 20°C D.B.
Outdoor : 7°C D.B. / 6°C W.B.

2) Above characteristics indicate instantaneous operation, which does not take into

account defrost operation.

3) Fan speed : High

4) Because this air conditioner heats a room by drawing in the heat of the outside

air (heat pump system), the heating efficiency will fall off when the outdoor
temperature is very low. If sufficient heat cannot be obtained with this air
conditioner, use another heating appliance in conjunction with it.

–8

12

13

6. ELECTRICAL DATA

6-1. Electrical Characteristics

Indoor Unit SAP–K301AH
Outdoor Unit SAP–C301AH

COOLING

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor
Performance at 240V Single phase 50Hz
Rating Conditions Running Amps. A 0.330 0.660 12.01 13.0

Power Input kW 0.072 0.146 2.882 3.10

Full Load Conditions Running Amps. A 0.330 0.660 14.51 15.5

Power Input kW 0.072 0.146 3.472 3.69

Rating Conditions : Indoor Air Temperature 27°C D.B. / 19°C W.B.

Outdoor Air Temperature 35°C D.B.

Full Load Conditions : Indoor Air Temperature 32°C D.B. / 23°C W.B.

Outdoor Air Temperature 43°C D.B.

HEATING

Indoor Unit Outdoor Unit Complete Unit

Fan Motor Fan Motor Compressor
Performance at 240V Single phase 50Hz
Rating Conditions Running Amps. A 0.330 0.660 11.01 12.0

Power Input kW 0.072 0.146 2.632 2.85

Full Load Conditions Running Amps. A 0.330 0.660 14.91 15.9

Power Input kW 0.072 0.146 3.562 3.78

Rating Conditions : Indoor Air Temperature 20°C D.B.

Outdoor Air Temperature 7°C D.B. / 6°C W.B.

Full Load Conditions : Indoor Air Temperature 27°C D.B.

Outdoor Air Temperature 24°CD.B. / 18°CW.B.

14

6-2. Electric Wiring Diagrams

To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.

WARNING

Indoor Unit SAP–K301AH

TRANS

1 2 4 5 678

C

BP

Controller (PCB Ass'y

)

Power transformer
Fan motor capacitor

Terminal plate
Room thermistor
Coil thermistor
Indicator lamp Ass'y

Upper flap motor

Lower flap motor*

*GREEN MAKE on

lower flap motor

Grille air outlet

(

Side View

)

Indoor Electrical Compornent Box

15

To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.

WARNING

Outdoor Unit SAP–C301AH

Terminal
plate (8P)

Terminal plate (3P)

Compressor motor
capacitor (C1)

Compressor motor
capacitor (C2)

Power relay

Fan motor capacitor

Controller

(PCB Ass´y)

Clamp

Fuse (250V, 20A)

Outdoor Electrical Compornent Box

■

Parts Layout in Outdoor Unit

■

Compressor

Fan motor

Heat exchenger coil

Coil thermistor

4-way valve coil

Air thermistor

16

7. INSTALLATION INSTRUCTIONS

7-1. Installation Site Selection

To prevent abnormal heat
generation and the possibility
of fire, don’t place obstacles,
enclosures and grills in front
of or surrounding the air
conditioner in a way that may
block air flow.

AVOID:

●

direct sunlight.

●

nearby heat sources that may affect performance of
the unit.

●

areas where leakage of flammable gas may be
expected.

●

places where large amounts of oil mist exist.

DO:

●

select an appropriate position from which every
corner of the room can be uniformly air-conditioned.
(High on a wall is best)

●

select a location that will hold the weight of the unit.

●

select a location where tubing and drain pipe have the
shortest run to the outside.

●

allow room for operation and maintenance as well as
unrestricted air flow around the unit. (Fig. 1)

●

install the unit within the maximum elevation
difference (H) above or below the outdoor unit and
within a total tubing length (L) from the outdoor unit as
detailed Table 1 and Fig. 2a.

Indoor Unit

,







15 cm

min.

15 cm
min.

15 cm min.

INDOOR UNIT

Front View

INDOOR
UNIT

Tubing length (L)

OUTDOOR
UNIT

Elevation
difference (H)

Fig. 2

Fig. 2a

Fig.1

WARNING

Table 1

* If total tubing length becomes 7.5 to 30 m (max.), charge additional refrigerant (R22) by 60 g/m.

No additional charge of compressor oil is necessary.

Model

Max. Allowable

Tubing Length at

Shipment (m)

Limit of Tubing

Length (L)

(m)

Limit of Elevation

Difference (H)

(m)

Required Amount of

Additional Refrigerant

(g/m)*

C301 30

Minimum height
from floor level

1.5m

Indoor Unit

Wall

Floor level

For stable operation of the
air conditioner, do not
install wall-mounted type
indoor units less than

1.5m from floor level.

CAUTION

Fig. 2b

7.5

15 60

17

AVOID:

●

heat sources, exhaust fans, etc. (Fig. 3)

●

damp, humid or uneven locations.

DO:

●

choose a place as cool as possible.

●

choose a place that is well ventilated.

●

allow enough room around the unit for air
intake/exhaust and possible maintenance.
(Figs. 4a and 4b)

●

provide a solid base (concrete block, 10 ✕40 cm
beams or equal), a minimum of 10 cm above ground
level to reduce humidity and protect the unit against
possible water damage and decreased service life.
(Fig.5)

●

use lug bolts or equal to bolt down unit, reducing
vibration and noise.

Outdoor Unit

Outdoor unit

Hot air

Heat source

Exhaust fan

Fig. 3

Min.
1 cm

Min.
1 cm

Min.50 cm

Min.10 cm

Air in

Air in

Air
discharge

Anchor bolts
(4 pieces)

Min. 10 cm

Min.
2 m

Min.
2 m

Obstacle above

Ground

Obstacle

Air
dis­charge

Side View

Fig. 4b

Required space around the unit.

Top View

Fig. 4a

Fig. 5