Mitsubishi Heavy Industries SRK28HD Bedienungsanleitung

WALL MOUNTED TYPE

ROOM AIR-CONDITIONER

(Air to air heat pump type)

R22 use models

SRK28HD

SRK40HD

TECHNICAL MANUAL

& PARTS LIST

DRAFT

INDOOR UNIT

Models SRK28HD, SRK40HD

OUTDOOR UNIT

Model SRC28HD

REMOTE CONTROLLER

Model SRC40HD

Serial signal transmission error

1 GENERAL INFORMATION

1.1 Specific features

The “Mitsubishi Daiya” room air-conditioner: SRK series are of split and wall mounted type and the unit consists of indoor unit and

outdoor unit with refrigerant precharged in factory. The indoor unit is composed of room air cooling or heating equipment with opera-

tion control switch and the outdoor unit is composed of condensing unit with compressor.

(1) Remote control flap

The flap can be automatically controlled by operating wireless remote controller.

¡Air scroll: Flap operation is automatically control.

¡Swing: This will swing the flap up and down.

¡Memory flap: Once the flap position is set, the unit memorizes the position and continues to operate at the same position from

the next time.

(2) Automatic Operation

When the remote control switch is set on “auto( )”, it will either automatically decide operation mode such as cooling, heating

and thermal dry, or operate in the operation mode before it has been turned to automatic control.

(3) Self diagnosis function

¡We are constantly trying to do better service to our customers by installing such judges that show abnormality of operation as

follows.

Series No.

Heat pump type

Product capacity

Wall mounted type

Split type room air-conditioner

1.2 How to read the model name

Example : SR K 40 H D

Room temperature thermistor error

Indoor fan motor error

Heat exchanger thermistor error

2 time flash

6 time flash

TIMER lamp

1 time flash

Outdoor unit heat exchanger

thermistor error

Discharge pipe thermistor error

Outdoor temperature thermistor

error

2 time flash

4 time flash

RUN lamp

keeps flashing

1 time flash

OFF

Outdoor unit error

Compressor overheat

Current cut

2 time flash

5 time flash

RUN lamp

1 time flash

2 time flash

5 time flash

1 time flash

6 time flash 6 time flash

RUN lamp TIMER lamp Outdoor (LED)

Item Model SRK28HD SRC28HD

Cooling capacity(1) W

Heating capacity(1) W

Power source 1 Phase, 220/230/240V, 50Hz

Cooling input kW

Running current (Cooling) A

Heating input kW

Running current (Heating) A

Inrush current A

COP Cooling sound level

Noise level Power level dB (55) (60)

Heating sound level

Power level (56) (60)

Exterior dimensions

Height ×Width ×Depth mm 250 ×815 ×249 540 ×720 ×290

Color Cool white Stucco white

Net weight kg 9.0 32

Refrigerant equipment

Compressor type & Q’ty –2PS164D5BF02 (Rotary type) ×1

Motor kW –0.75

Starting method – Line starting

Heat exchanger Louver fins & inner grooved tubing

Refrigerant control Capillary tubes

Refrigerant(3) kg R22 0.8 (Pre-Charged up to the piping length of 7.5m)

Refrigerant oil R0.35 (SUNISO 4GDID or ATMOS M60)

Deice control MC control

Air handling equipment

Fan type & Q’ty Tangential fan ×1 Propeller fan ×1

Motor W 14 15

(Cooling) 8.0 30

Air flow (at High) (Heating) CMM 8.5 30

Air filter, Q’ty Polypropylene net (washable) ×2–

Shock & vibration absorber – Cushion rubber (for compressor)

Electric heater ––

Operation control

Operation switch Wireless-Remote controller –

Room temperature control MC. Thermostat –

Pilot lamp RUN (Green), TIMER (Yellow), HI POWER (Green), ECONO (Orange)

Safety equipment

O.D mm (in) Liquid line: φ6.35 (1/4″) Gas line: φ9.52 (3/8″)

Connecting method Flare connecting

Attached length of piping Liquid line: 0.4 m

Gas line : 0.33 m –

Insulation Necessary (Both sides)

Drain hose Connectable

Power source cord 2.5 m (3 cores with Earth)

Size ×Core number 1.5 mm2×4 cores (Including earth cable)

Connection wiring Connecting method Terminal block (Screw fixing type)

Accessories (included) Mounting kit

Optional parts –

Notes (1) The data are measured at the following conditions.

2 SELECTION DATA

2.1 Specifications

Model SRK28HD (Indoor unit)

SRC28HD (Outdoor unit)

Item Indoor air temperature Outdoor air temperature Standards

Operation DB WB DB WB

Cooling 27ºC 19ºC 35ºC 24ºC ISO-T1, JIS C9612

Heating 20ºC – 7ºC 6ºC ISO-T1, JIS C9612

(2) The operation data are applied to the 220/230/240V districts respectively.

(3) The refrigerant quantity to be charged includes the refrigerant in 7.5 m connecting piping.

If the piping length is longer, when it is less than 10 m, add 20 g refrigerant per meter and when it is 10 to 15 m, add 30 g refrigerant per meter.

Operation data

(1)

Refrigerant

piping

Frost protection, Serial signal error protection

Fan motor error protection

The piping length is 7.5m.

Compressor overheat protection, Overcurrent pro-

tection, Serial signal error protection

Item Model SRK40HD SRC40HD

Cooling capacity(1) W

Heating capacity(1) W

Power source 1 Phase, 220/230/240V, 50Hz

Cooling input kW

Running current (Cooling) A

Heating input kW

Running current (Heating) A

Inrush current A

COP Cooling sound level

Noise level Power level dB (56) (63)

Heating sound level

Power level (57) (64)

Exterior dimensions

Height ×Width ×Depth mm 250 ×815 ×249 640 ×850 ×290

Color Cool white Stucco white

Net weight kg 9.0 41

Refrigerant equipment

Compressor type & Q’ty –(RM5517GNE4)

Motor kW –1.3

Starting method – Line starting

Heat exchanger Louver fins & inner grooved tubing

Refrigerant control Capillary tubes

Refrigerant(3) kg R22 (Pre-Charged up to the piping length of 7.5m)

Refrigerant oil R0.6 (BARREL FREEZE 32SAM)

Deice control MC control

Air handling equipment

Fan type & Q’ty Tangential fan ×1 Propeller fan ×1

Motor W 14 35

(Cooling) 9.0 38

Air flow (at High) (Heating) CMM 9.5 38

Air filter, Q’ty

Polypropylene net (washable)

–

Shock & vibration absorber – Cushion rubber (for compressor)

Electric heater ––

Operation control

Operation switch Wireless-Remote controller –

Room temperature control MC. Thermostat –

Pilot lamp RUN (Green), TIMER (Yellow), HI POWER (Green), ECONO (Orange)

Safety equipment

O.D mm (in) Liquid line: φ6.35 (1/4″) Gas line: φ12.7 (1/2″)

Connecting method Flare connecting

Attached length of piping Liquid line: 0.4 m

Gas line : 0.33 m –

Insulation Necessary (Both sides)

Drain hose Connectable

Power source cord 2.5 m (3 cores with Earth)

Size ×Core number 1.5 mm2×4 cores (Including earth cable)

Connection wiring Connecting method Terminal block (Screw fixing type)

Accessories (included) Mounting kit

Optional parts –

Notes (1) The data are measured at the following conditions.

Model SRK40HD (Indoor unit)

SRC40HD (Outdoor unit)

Item Indoor air temperature Outdoor air temperature Standards

Operation DB WB DB WB

Cooling 27ºC 19ºC 35ºC 24ºC ISO-T1, JIS C9612

Heating 20ºC – 7ºC 6ºC ISO-T1, JIS C9612

(2) The operation data are applied to the 220/230/240V districts respectively.

(3) The refrigerant quantity to be charged includes the refrigerant in 7.5 m connecting piping.

If the piping length is longer, when it is less than 10 m, add 20 g refrigerant per meter and when it is 10 to 15 m, add 30 g refrigerant per meter.

Operation data

(1)

Refrigerant

piping

The piping length is 7.5m.

Frost protection, Serial signal error protection

Fan motor error protection Compressor overheat protection, Overcurrent pro-

tection, Serial signal error protection

2.2 Range of usage & limitations

2.3 Exterior dimensions

(1) Indoor unit

Models SRK28HD, 40HD

Indoor return air temperature

(Upper, lower limits)

Refrigerant line (one way) length Max. 15m

All models

Refer to the selection chart

Power source voltage Rating ±10%

Voltage at starting Min. 85% of rating

Frequency of ON-OFF cycle Max. 10 times/h

ON and OFF interval Max. 3 minutes

Outdoor air temperature

(Upper, lower limits)

Vertical height difference between

outdoor unit and indoor unit Max. 5m (Outdoor unit is higher)

Max. 5m (Outdoor unit is lower)

Item

Models

Unit: mm

117.5 580 117.5

148.5

216.5216.5

8.2

44.5

236.1

5.7

450

67.5

42.7

47.2

175

44.5

216.5216.5

148.5

53.5

Piping for Gas

Drain hose 540 (ø16)

Piping for Liquid 465.1 (ø6.35)

Piping hole (ø65) Piping hole (ø65)

( )

28:ø9.52

40:ø12.7 397.1

815

250

14.5

788

560

VIEW A

Piping hole right(left)

Terminal block

960

249

(2) Outdoor unit

Model SRC28HD

Drain hole

286.4

290

49.6 43.5

850

203.1 510 136.9

476

Elogated hole

(2-12x16)

314 12

328

Terminal block

Service valve (Liquide)

ø6.35 (1/4'')

Service valve (Gas)

ø12.7 (1/2'')

Ground

terminal

124 34.6

20˚

42.7

100.3

640

Model SRC40HD

Unit: mm

290

540

14.4 47.4 42.6

264.5

404.5

510

720

17.8

Drain holes

50 12

39.7

99.9

340

312.5 13.5

139 2-16x12

61.9

139.3 33.3 Flare connecting ø6.35 (1/4")

Service valve (Liquid)

40˚

Flare connecting ø9.52 (3/8")

Service valve (Gas)

Terminal block

2.4 Piping system

Model SRK40HD

Outdoor unitIndoor unit

Flare connecting

Room temp.

thermistor

Heat

exchanger

Flare connecting

Piping

(Liquid)

ø6.35

Heat

exchanger

thermistor

Piping

(Gas)

ø9.52

Service valve

(Gas)

Check joint

4 way valve

Service valve (Liquid)

Strainer

Capillary tube Capillary tubeCapillary tube

Compressor

Accumulator

Discharge temp.

thermistor

Heat exchanger

thermistor

Heat

exchanger

Outdoor air

temp. thermistor

Cooling cycle

Heating cycle

Model SRK28HD

Outdoor unitIndoor unit

Flare connecting

Room temp.

thermistor

Heat

exchanger

Flare connecting

Piping

(Liquid)

ø6.35

Heat

exchanger

thermistor

Piping

(Gas)

ø12.7

Service valve

(Gas)

Check joint

4 way valve

Service valve (Liquid)

Strainer

Capillary tube

Compressor

Accumulator

Discharge temp.

thermistor

Heat exchanger

thermistor

Heat

exchanger

Outdoor air

temp. thermistor

Cooling cycle

Heating cycle

Check valve

2.5 Selection chart

Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be

obtained in the following way.

Net capacity = Capacity shown on specification ✕ Correction factors as follows.

(1) Coefficient of cooling and heating capacity in relation to temperatures

(2) Correction of cooling and heating capacity in relation to one way length of refrigerant piping

It is necessary to correct the cooling and heating capacity in relation to the one way piping length between the indoor and outdoor

units.

(3) Correction relative to frosting on outdoor heat exchanger during heating

In additions to the foregoing corrections (1), (2) the heating capacity needs to be adjusted also with respect to the frosting on the

outdoor heat exchanger.

How to obtain the cooling and heating capacity

Example : The net cooling capacity of the model SRK40HD with the piping length of 15m, indoor wet-bulb temperature at 19.0˚C

and outdoor dry-bulb temperature 35˚C is Net cooling capacity = 3600 ✕0.975 ✕1.0 =3510 w

SRK40HD Length 15m Factor by air

temperatures

ISO-T1 Standard ConditionOutdoor air W.B. temperature °C W.B.

010-10 -5 5

14 16 18 20 22

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

ISO-T1 Standard ConditionIndoor air W.B. temperature °C W.B.

Heating

Cooling

Applicable range

Coefficient of cooling &

Heating capacity in

relation to temperature

Cooling operation

Outdoor air D.B.

temperature

°C D.B.

Heating operation

Indoor air D.B.

temperature

°C D.B.

Piping length [m]

Cooling

Heating

1.0

0.99

1.0

0.975

1.0

Air inlet temperature of

outdoor unit in ˚CWB

Adjustment coefficient

-10

0.95

-9

0.94

-7

0.93

-5

0.91

-3

0.88

-1

0.86

0.87

0.92

1.00

3 ELECTRICAL DATA

3.1 Electrical wiring

Models SRK28HD, 40HD

Power source

1 Phase

220/230/240V 50Hz

Outdoor unit

Indoor unit

CNW

HEAT

EXCHANGER

CNM

CNU

CNC

(250V 3.15A)

52C-3

52C

Printed circuit

board

Printed circuit

board

52X1

CFO

52X2

52X3

52X2

52X1

52C-4

ZNR

IC8

2/N

Y/GN

FMo

20S

Y/GN

TB TB

Y/GN

LNJ

(250V 3.15A)

ZNR

2 51C

CM1

CM2

Y/GN

D.S

CNB

CNE CNG

Th1 Th2

CNG

Th4

Th5

Th6

CNB

CNU

Display

Wireless

R-Amp

Black

Brown

Red

Light blue

White

Yellow/Green

Y/GN

Color symbol

Meaning of marks

Symbol Parts name

ge temp. thermistor

Symbol Parts name

CFI

FMI

FMo

Th1

Th2

Th4

Th5

Th6

Capacitor for FMI

Compressor motor

Fuse

Fan motor (Indoor)

Fan motor (Outdoor)

Flap motor

Room temp. thermistor

Heat exchanger thermistor (Indoor unit)

Heat exchanger thermistor (Outdoor unit)

Outdoor air temp. thermistor

Discharge temp. thermistor

Transformer

ZNR

20S

52C

52X1-3

51C

Varistor

4 way valve (coil)

Magnetic contactor

Diode stack

Auxiliary relay

Motor Protector for CM

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